• ENVIRONMENTAL TECHNOLOGY 21XX

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  • Offer Profile
  • Wiefferink has more than 60 years of experience in designing and manufacturing flexible solutions in plastic sheeting, both nationally and internationally. We are widely active in the environmental and biogas branches. In order to offer maximum quality, we like to keep the entire process in our own hands.

    Wiefferink B.V. focuses on processing flexible synthetic materials. We are one of the leading European specialists in manufacturing and marketing storage and covering solutions in flexible foil. Our main strenght lies in the development and innovation of new solutions and products based on customer needs.
Product Portfolio
  • OUR SOLUTIONS

      • AB Cover

      • Durable cover and gasholder
        The Air Blown Cover is an innovative double membrane roof with a relatively large, variable gas-storage volume, for biogas installations and other purposes. Its shape and membrane pressure mean that weather influences have little effect on the AB Cover.

        Advantages
        • Gas storage volume at ø 25m is about 230% larger than in conventional designs
        • Lower membrane foil has 35% lower gas permeability
        • Easy accessibility for maintenance and overhaul activities
        • Lower silo load due to hemispherical construction
        • Low wind sensitivity and lower chance of snow accumulation due to stable construction
        • No condensed, corrosive liquid on the silo walls

        The standard version of the AB Cover includes:
        • An outer membrane of UV-resistant biaxial woven foil
        • An inner membrane of chemically resistant biaxial woven foil
        • A blower (or blowers) to maintain the pressure on the outer membrane
        • Compressed air connections.
        • An over/under-pressure valve
        • A manual height gauge, to measure the gas volume

        Available options:
        • ATEX fans
        • One or more inspection openings and a viewing window
        • Special edge finishes and a height gauge (winter edition)
        • An ultrasonic height gauge
        • A gas-tightness test

        Applications:
        • Cover and gas collection in biogas installations
        • Cover and gas collection in water treatment installations
            • AB Cover

              • Construction with silo isolation and outside lining
              • Over/under-pressure valve
              • AB Cover with and without silo isolation

              Durable cover and gasholder
              Thanks to the high chemical resistance and mechanical strength of the foils, the ab cover satisfies the highest quality standards. New cutting and welding procedures enable the covers to better absorb the biaxial forces exerted on them, and the hemispherical construction ensures low silo wall loading.
              The AB Cover is a double membrane cover, in which the outer cover is always pressurised. As a result, rain, snow and wind have little impact on it.
              The AB Cover has a huge advantage over silo roofs due to its widely variable gas storage capacity and its ability to function as a cover for a digester or secondary digester, to temporarily collect gas. Of course the AB Cover conforms to all local and European environmental legislation.

              CCustomisation for every situation
              Each AB Cover is customised to accommodate the client’s wishes and external factors. The cover consists of separately installed upper and lower membranes, which are manufactured from biaxial reinforced fabrics with a high-grade, chemically resistant PVC coating.

              Maximally variable gas storage capacity
              AB Covers have an enormous gas storage capacity and are available for silos up to a diameter of approximately 40 metres. Operational pressures varying from 0 to 5 mbar and an under-pressure situation up to -1.5 mbar are no problem. Higher pressure can be accommodated on request. The tension straps and net support the upper and lower membranes against under-pressure situations and supports sulphur component flare-outs.

              Installation of the AB Cover

              The AB Cover is delivered to the building site prefabricated. The support straps (tractive force of 2500 kg and the safety and desulphurisation net (net strength of 400 kg/m2) are installed at an angle. Service openings can also be incorporated as an option. A layer of wooden beams is unnecessary, which saves a considerable amount of money.

              Maintenance
              The AB Cover must be visually inspected at regular intervals. The glycol level and glycol freezing point must be checked in the over/under-pressure valve.
        • Silocover

        • Durable silo cover
          The Silocover is an effective cover that keeps your silo from releasing CO2 It also keeps rainwater out and has an unique, innovative water drainage system. It is an effi cient and economical way to cover various types of silos (concrete, steel and plastic).

          Advantages

          • Durable product with long lifespan
          • Fast delivery and installation
          • Easily accessible for maintenance and overhaul activities
          • Satisfies the most recent environmental directives
          • Custom-made for every silo
          • Limits odour nuisance and emission of hazardous substances

          The standard version of the Silocover includes
          • A grey cover of flexible foil, reinforced with straps
          • A central column
          • Inspection opening with rain protection.
          • Edge tube system with tension sets for tightening
          • Installation

          Available options
          • Extra inspection opening with rain protection
          • Gas-tight version
          • Green version

          Applications
          • Covering silos.
          • The gas-tight Silocover can be used for gas storage from manure or waste flows for biogas installations.
              • Silocover

                • Edge tube system with ratches for tensioning
                • Center column
                • Silocover on concrete element silo

                DURABLE SILO COVER
                The silocover by Wiefferink is unique. It has a very long lifespan due to the high-grade materials and innovative production technology used in its manufacture, meaning it is an extremely durable cover for your silo.

                In order to contain the emission of hazardous materials, there is a duty to cover stored manure in many European countries. The Silocover is ideal for covering silos. With one or more inspection openings, the mixers often present in the tank can also be maintained. Moreover, rainwater is kept out of a covered silo, so there is no unnecessary volume increase.

                In accordance with environmental directives

                Every EU member state is currently adjusting its regulations regarding CO2 emissions, making the use of a cover largely necessary or required. This has already been implemented in the Netherlands, Denmark, Belgium, Italy and Eastern European countries, among others.
                Our Silocovers satisfy both environmental legislation and construction-related directives.

                Absorbs external forces

                The Silocover is manufactured from heavy polyester fabric with a synthetic coating on both sides. As a result, it can withstand manure and other aggressive substances and protects against many years of extreme weather conditions. The Silocover is equipped with an unique system of edge pipes and tension sets, which transfer the forces from the cone to the silo circumference. It is also possible to adjust the tension later. An inspection opening provides access to the silo for maintenance. The Silocover is available in a gas-tight and a non-gas-tight version.

                KOMO certified

                Odour nuisance and the emission of hazardous substances are minimised by the Silocover. The Wiefferink Silocover has a KOMO certificate and satisfies all statutory requirements.

                Installation of the Silocover

                The Silocover is delivered ready-to-use. For every silo, the roof construction is calculated based on wind and snowfall values for your location.

                Maintenance and lifespan
                The Silocover requires very little maintenance; after a large snowfall the snow must be removed, and the Silocover must be kept at the right tension.
          • Gasbuffer

          • Flexible gas storage, for both temporary and long-term gas storage
            The gas buffer has been developed for the storage of various gas types. A gas buffer also enables the conditioning and mixing of the gas. The use of double membrane technology ensures a flexible gas storage volume. Our wide range of gas buffers provides for an effi cient construction for the most diverse storage criteria and project objectives.

            Advantages

            • Storage of large quantities of gas from 50 to 30,000 cubic metres
            • Easily accessible service box
            • Project-specific forms and designs possible
            • High operating pressures to 5 – 70mbar depending on the design
            • Complete installation including blower, gas inlet/outlet, pressure relief valves and sensors
            • Short delivery and installation periods

            Implementation variants:
            • Gas buffer Spherical
            • 3/4 Gas buffer
            • Gas buffer Cylinder

            Available options:
            • Ultrasonic height gauge
            • Condensation tank
            • Pressure relief valve
            • Gas pressure sensor Blower Sight glass

            Advantages:
            • Storage of large quantities of gas from 50 to 30,000 cubic metres
            • Easily accessible service box
            • Project-specific forms and designs possible
            • High operating pressures to 5 – 70mbar depending on the design
            • Complete installation including blower, gas inlet/outlet, pressure relief valves and sensors
            • Short delivery and installation periods
                • Gasbuffer

                • Flexible gas storage, for both temporary and long-term gas storage
                  Wiefferink offers the right solution for any type of gas storage. The need for gas storage is projectspecific and usually depends on the gas production and the space available. Gas buffers can be used free-standing, but can also be installed in tanks, containers or buildings.
                  The type of foil of both the inner and outer membranes is selected depending on the type of gas and the gas storage location. The gas storage systems are suitable for products including (refi ned) biogas, (pure) CO2 and natural gas. A static analysis is a standard part of each project. Depending on the design, a gas buffer can store up to 30,000 cubic metres.
                  Service-box

                  The innovative design of the service box enables all connections to be above the ground and consequently simple to make. The blower, control unit and sensors also remain easily accessible during operation, so operating costs are very low. The service box is in 316 stainless steel, meaning weather infl uences have no impact on the technical installation.

                  High quality, certified materials
                  The gas buffer is produced on the basis of high quality materials and gas-resistant foils. The welding work is high-frequency or thermal, depending on the foil type. The production method is ISO-certifi ed and carried out by experienced employees so that Wiefferink can guarantee the highest quality.
            • Ecobag

            • The Ecobag is a flexible storage for up to 10.500m3. It can be used, for example, as a storage option when spreading manure is not permitted, or as a buffer for a biogas installation. The Ecobag is a low-cost investment with fast installation and a landscape-friendly appearance.

              Advantages

              • Large, semi-permanent storage that can be installed quickly
              • Simple permit process; sometimes notification is sufficient
              • Low profile and green colour
              • Low investment costs
              • Usage lifespan of approx. 10 to 15 years
              • No high decontamination costs at end-of-life

              The Ecobag includes

              • Flexible foil with very strong mechanical propertiesand high chemical resistance
              • Sufficient fastening points, straps and earth anchors
              • Vent pipes
              • Inspection opening with safety edge

              Available options

              • Inspection opening with stainless steel hatch
              • Different foil colours, strengths and chemical resistances
              • Electric mixer
              • Power take-off mixer (under certain conditions)

              Applications

              • As storage for manure when spreading is not permitted
              • As storage for digestate in combination with a biogas installation
              • For storage of waste flows, liquids or fuels (special foil required)
                  • Ecobag

                    • Electro mixer
                    • Electro mixer
                    • Ecobag piping parts

                    Environmentally friendly storage system for manure, digestate and other liquid waste flows
                    The ecobag is a system that Wiefferink has developed to store manure, digestate and other liquid waste flows in an odourless manner. The specially developed eco-green colour of the ecobag means it is hardly noticeable in the landscape. The storage system is easy to install, without an architectural construction, on most ground types.
                    Regulations and standards relating to spreading manure and storing manure and waste flows are becoming ever stricter. In addition, the resistance against large, conspicuous, grey manure bags around villages and cities is also growing, due to the fear of odour nuisance and landscape pollution.
                    The Wiefferink Ecobag offers a solution to this. Blends into the landscape
                    The Ecobag can be provided with a specially developed odour filter, with filters the gases released so that there can be no odour nuisance. In order to blend into the landscape, an eco-green colour was developed in addition to grey. No building permit necessary No building permit is required because there is no permanent construction required. Depending on local legislation, however, it may be necessary to apply for an installation permit, though sometimes simply notifying the authorities of the installation is sufficient. Installation of the Ecobag The Ecobag is installed within an earth bank, for which no supporting structure is necessary. In most cases, the Ecobag can simply be placed on the loose ground. The groundwork must satisfy the local standards for installing a manure basin. Wiefferink supplies the drawings for dimension of the groundwork. Before installation, our experts inspect the sizing and the situation at your location, so that we can complete the installation as quickly and effectively as possible, ready to use. Additional options for the Ecobag include the patented odour filter and a mixer to keep the stored manure homogeneous. Maintenance and lifespan The Ecobag requires very little maintenance. Only the vent pipes and possibly the odour filters need to be checked for silting up. An Ecobag typically lasts 10 to 15 years.
              • Combibag

              • Combibag is a flexible storage for up to 10.000m3 of manure and digestate, which captures the gases released during the digestion processes. The relatively low investment, fast installation and landscape-friendly appearance are the main advantages.

                Advantages

                • Large, flexible storage with gas storage
                • Simple permit process; sometimes notification is sufficient
                • Fast delivery and assembly landscape-friendly due to low profile and green colour
                • Low investment costs

                The Combibag includes:
                • Very strong, chemically resistant, flexible foil
                • More than enough reinforced fastening points, straps and anchors
                • Gas-tight inspection opening with stainless steel hatch
                • Safety edge and separate gas removal points
                • Over/under-pressure valve

                Available options:
                • Extra inspection opening with stainless steel hatch and safety edge
                • Electric mixer
                • Pressure and/or fill level measurement
                • Heating
                • Connections with non-return valve(s) for biogas installations.

                Advantages:
                • As storage for manure when spreading is not permitted
                • As final digester in combination with a biogas installation
                • For temporary or permanent storage of waste flows with gas formation
                    • Combibag

                      • Over/Under-pressure valve
                      • Electro mixer
                      • Combibag piping parts

                      Environmentally friendly storage system for manure and digestate with gas capture
                      The combibag is a system that Wiefferink has developed to store manure and digestate in an odourless manner, while also providing space to capture the methane given off by the slurry. The special eco-green colour of the combibag means it is hardly noticeable in the landscape. The storage system is easy to install on most ground types.
                      The Combibag is produced with a special foil suitable for the digestion process and for capturing gas. In comparison with our Ecobag, it has more, heavier fastening points, tension straps and anchors. These are appropriate for absorbing the forces resulting from the gas pressure.
                      The Combibag is fitted with an over pressure valve and has a maximum gas pressure of 1.5 mbar.

                      Blends into the landscape

                      The Combibag captures the gases released, to prevent odour nuisance in the vicinity. In addition, the Combibag is available in grey and a special new eco-green colour to blend in with the landscape.

                      No building permit
                      No building permit is required, because no permanent construction is required for the Combibag. Depending on local legislation, however, it may be necessary to apply for an installation permit, though sometimes simply notifying the authorities of the installation is sufficient.

                      Installation of the Combibag

                      The main advantage of the Combibag is that it can be installed in almost any location, without a supporting structure. The Combibag is placed within an earth bank for side support. Wiefferink supplies the drawings for dimension of the groundwork. Before installation, our experts inspect the sizing and the situation at your location, so that we can complete the installation as quickly and effectively as possible, ready to use.
                      Additional options for the Combibag include a gas pump installation, pressure measurement, heating and a mixer.

                      Maintenance and lifespan
                      The Combibag requires very little maintenance. It is, however, necessary to check the volume of the gas production, the intended gas removal and the operation of the over/under-pressure valve.
                • Flexitank

                • Flexible liquid storage
                  The Flexitank is designed to store liquids: from clean water and fuels to wastewater, fire extinguishing water and liquid buffers for industrial use. It is a unique product that makes safe, durable storage of liquids possible in any location.

                  Advantages

                  • Storage for large volumes of water
                  • Flexible system
                  • Easily applicable
                  • Available in standard volumes and client-specific sizes
                  • Available in remote locations
                  • Easy to transport due to relatively small volume and low weight 44%
                  • Higher carrying capacity than vats, when transported in containers Takes up just 2% of the maximum volume when empty
                  For storage of:
                  • Rainwater drinking water fire-extinguishing water irrigation water wastewater
                  • Edible oils
                  • Fruit juices
                  • Wine
                  • Latex
                  • Pharmaceutical liquids
                  • Cleaning products
                  •  Fuels
                  • De-icing fluid
                  • Manure
                      • Flexitank

                      • Flexible liquid storage
                        The Wiefferink flexitank (also known as pillowbag internationally) is suitable for both temporary and permanent storage. the advantages of a flexible installation over a permanent structure makes the flexitank ideal in countries where building permits or construction materials are difficult to acquire.

                        The Wiefferink Flexitank can be filled and emptied via lead-throughs. The product is ideal for connection to a filter system. The Flexitank concept is used in such places as Somalia, Pakistan and South Africa in this way, mainly in locations where drinking water cannot be offered in a regular manner.

                        Clean drinking water worldwide

                        The Flexitank is used by Dutch and international water companies for both emergency drinking water provision and regular drinking water supply. Wiefferink Flexitanks are also used at international sporting events, such as the soccer World Cup and European Cup and London 2012.
                        In cooperation with these companies and relief organisations, the Flexitank has been further developed and granted drinking water certification, FDA certification and UK WRAS certification. In order to supply the world’s citizens with clean drinking water, a fully-fledged, safe and durable drinking water system was created. Moreover, the Flexitank is easy to install on location and can be used immediately in case of emergency.

                        High-grade, certified materials
                        The Wiefferink Flexitank is manufactured for repeated use. We use high-grade materials that are extremely strong, light and flexible. These materials are thermally and high-frequency welded with care. The production method has been recorded in ISO documentation and certified by KIWA.

                        Flexitank for fuels and other liquids

                        Because the Flexitank can be made of special chosen flexible foil that is impermeable to a certain liquid, it can be used to store manure, diesel, for example, or kerosene, de-icing fluid, liquid chemicals, fire-extinguishing water or wastewater.

                        Easy to transport

                        The small Flexitanks are extremely easy to transport in containers, pick-ups or flatbed trailers. Empty, the product takes up just 2% of its maximum volume. The Flexitank can be set up quickly and easily and it provides optimum protection for the liquid. This efficient liquid storage can be supplied in a variety of standard volumes (5, 10, 15, 20 and 25 m3) or in a custom size, up to 2000m³, entirely according to your specifications.
                  • PROJECTS

                      • AGRI PROJECTS

                      • We offer flexible cover solutions in the agricultural sector
                        Wiefferink supplies and installs flexible storage and covering solutions for the agricultural entrepreneur at home and abroad.
                          • France

                          • Product : Silocover non gastight
                            Application :
                            Digestate
                            Location :
                            French Alpes
                            Outside diameter :
                            19,50 m
                            Special :
                            High snowload
                          • Pepowo Poland

                          • Location : Pepowo Poland
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø42,00m x 6,00 m
                          • Perpignan France

                          • Location : Perpignan France
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø41,70m x 6,00m
                          • Flexitank Waikato NZ

                          • Location : Waikato New Zealand
                            Dimensions :
                            Ø30.5 m x 1.4 m
                            Storage capacity :
                            1000 m³
                            Shape :
                            Round dyer
                            Medium :
                            Storage of liquids
                          • Flexitank New Zealand

                          • Location : New Zealand
                            Dimensions :
                            Ø30.5 m x 1.4 m
                            Storage capacity :
                            1000 m³
                            Shape :
                            Round
                            Application :
                            Storage of liquid content
                            Medium :
                            diluted effluent (i.e wash water from dairy shed)
                          • Lüdinghausen Germany

                          • Location: Lüdinghausen Germany
                            Medium: :
                            Storage of manure
                            Form: :
                            Single Membrane non gastight
                            Dimensions: :
                            Ø14,74m x 5,0 m
                          • Löningen Germany

                          • Location : Löningen Germany
                            Medium :
                            Storage of manure
                            Shape :
                            Single Membrane non gastight
                            Dimensions :
                            Ø16,38m x 5,0 m
                          • Borstel Germany

                          • Location : Borstel Germany
                            Medium :
                            Storage of manure
                            Shape :
                            single membrane non gastight
                            Dimensions :
                            Ø31,48m x 8,00 m
                          • Sendenhorst Germany

                          • Location : Sendenhorst Germany
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø20,38m x 5,92 m
                          • Sulingen Germany

                          • Location : Melle Germany
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø18,00m x 8,00 m
                          • Cover Slot Silo

                          • Location : Diffelen Netherlands
                            Medium :
                            Cover slot silo
                            Dimensions :
                            45,00m x 9,50m
                          • Melle Germany

                          • Location : Stemwede Germany
                            Dimensions :
                            Ø12,38m x 5,0 m
                            Type Roof :
                            Single membrane, non gastight
                            Application :
                            Storage of manure
                          • Warendorf Germany

                          • Location : Warendorf Germany
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø17,26m x 6,28 m
                          • Bethen Germany

                          • Location : Bethen Germany
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø17,90m x 5,00 m
                          • Ecobag New Zealand

                          • Location : New Zealand
                            Dimensions :
                            ~30.0 x 20.0 x 4.50 m (L x W x H)
                            Shape :
                            Rectangular
                            Medium :
                            Storage of liquid content
                            Storage capacity :
                            ~2.000 m³
                          • Höör Sweden

                          • Location : Höör Sweden
                            Medium :
                            Storage of manure
                            Shape :
                            Silocover single membrane non gastight
                            Dimensions :
                            Ø25,56m x 4,00m
                          • Nijeveen Netherlands

                          • Location : Nijeveen Netherlands
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø31,00m x 6,00 m
                          • Koekelare Belgium

                          • Location : Koekelare Belgium
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø19,95m x 6,00 m
                          • Ecobag Japan

                          • Location : Japan
                            Dimensions :
                            70.0 x 46.0 x 3.85 m (L x W x H)
                            Shape :
                            Oval
                            Medium :
                            Storage of manure
                            Storage capacity :
                            ~10.000 m³
                          • Marsberg Germany

                          • Location : Marsberg Germany
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø29,20m x 6,00 m
                          • Dünsen Germany

                          • Location : Dünsen Germany
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø22,40m x 8,00m
                          • Ostbevern Germany

                          • Location : Ostbevern Germany
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø18,49m x 5,92 m
                          • Poppenhausen Germany

                          • Location : Poppenhausen Germany
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            2 x Ø22,36m x 5,00m
                          • Coesfeld Germany

                          • Location : Coesfeld Germany
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane, non gastight
                            Dimensions :
                            Ø17,61m x 4,00m
                          • Coesfeld Lette Germany

                          • Location : Coesfeld Lette Germany
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø24,96m x 4,47m
                          • Dinklage Germany

                          • Location : Dinklage Germany
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø20,40m x 8,00m
                          • Kaarst Germany

                          • Location : Kaarst Germany
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø19,40m x 5,92m
                          • Kalkar Germany

                          • Location : Kalkar Germany
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø24,96m x 5,92m
                          • Kempen Germany

                          • Location : Kempen Germany
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø18,49m x 4,38m
                          • Kleve Germany

                          • Location : Kleve Germany
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø24,04m x 5,92m
                          • Klinkow Germany

                          • Location : Klinkow Germany
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø37,22m x 6,00m
                          • Luckau Germany

                          • Location : Luckau Germany
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø40,60m x 10,15m
                          • Schöppingen Germany

                          • Location : SchöppingenGermany
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø20,38m x 4,46m
                          • Waltrop Germany

                          • Location : Waltrop Germany
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø20,32m x 5,82m
                          • Mendionde France

                          • Location : Mendionde France
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø15,30m x 3,00m
                          • Hörby Sweden

                          • Location : Hörby Sweden
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø20,20m x 4,00m
                          • Ecobag France

                          • Location : Bords France
                            Dimensions :
                            42,5 x 23,5 x 3,5m
                            Shape :
                            Rectangle
                            Medium :
                            Storage of liquid
                            Content :
                            ~3.000 m³
                          • Silocover Denmark

                          • Location : Hærup Denmark
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø15,56m x 4,00m
                          • Münster Germany

                          • Location : Münster Germany
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø14,30m x 3,60m
                          • Lüdinghausen Germany

                          • Location : Lüdinghausen Germany
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø16,66m x 5,92 m
                          • Alveringem Belgium

                          • Location : Alveringem Belgium
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø36,29m x 6,00m
                          • Ferwert Netherlands

                          • Location : Ferwert Netherlands
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø27,30m x 5,00m
                          • 3x Silocover Denmark

                          • Location : Denmark
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            3x Ø31,12m x 4,00m
                          • Silocover Cumbria UK

                          • Location : Cumbria United Kingdom
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø34,80m x 5,00m
                          • Geldern Germany

                          • Location : Geldern Germany
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø18,49m x 5,82m
                          • Stemwede Germany

                          • Location : Stemwede Germany
                            Dimensions :
                            Ø12,38m x 5,0 m
                            Type Roof :
                            Single membrane, non gastight
                            Application :
                            Storage of manure
                          • Silocover Fousenant France

                          • Location : Fousenant France
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø23,00m x 6,28m
                          • Wallhausen Germany

                          • Location : Wallhausen Germany
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø36,90m x 5,62 m
                          • Streyl Germany

                          • Location : Streyl Germany
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø16,40m x 6,0 m
                          • Bingen Germany

                          • Location : Bingen Germany
                            Medium :
                            Storage of manure
                            Shape :
                            Single membrane non gastight
                            Dimensions :
                            Ø20,45m x 5,00m
                        • BIOGAS PROJECTS

                        • Coverage solutions for the biogas industry
                          Biogas comes from the fermentation of many types of organic (residual) material. This can be manure, but also other organic waste streams.
                            • Combibag VK

                            • Product : Combibag
                              Application :
                              Storage of digestate and gas
                              Location :
                              United Kingdom
                              Combibag dimensions :
                              38 m x 40.0m x 8.75 m (excl. slope 2%)
                              Shape :
                              Rectangle
                              Storage capacity (liquid) :
                              ~16.000 m³
                              Storage capacity (gas) :
                              ~2,500 m³ - 8,000m³
                              Particulars :
                              placed in a lagoon with containment
                            • Ecobag Toncza Poland

                            • Location : Toncza Poland
                              Dimensions Ecobag :
                              ~65,00 x 32,00 x 4,75 m Shape : Rectangular
                              Application :
                              Storage of liquid content
                              Storage capacity :
                              ~7.000 m³
                              Liquid content :
                              Thin fraction of digestate from energy crops, pig/cow manure, food and slaughter waste
                            • Gasbuffer Fredenbeck Germany

                            • Location : Fredenbeck Germany
                              Dimensions :
                              Ø23,35m x 17,70m
                              Storage capacity :
                              5000 m³
                              Shape :
                              3/4
                              Application :
                              Biogas
                            • AB Cover Isle of Wight UK

                            • Location : Isle of Wight United Kingdom
                              Dimensions :
                              Ø32,36m x 6,00m
                              Storage capacity :
                              ca. 2.415 m³
                              Shape :
                              AB Cover
                              Medium :
                              Biogas
                            • Ecobag Kupin Poland

                            • Location : Kupin Poland
                              Dimensions :
                              65 x 65 x 76 x 5m
                              Shape :
                              Ecobag Triangular
                              Medium :
                              Storage of liquid content
                              Storage capacity :
                              ~8.000 m³
                              Liquid content :
                              Thin fraction of digestate from energy crops, pig/cow manure, food and slaughter waste
                            • Ecobag Falknowo Poland

                            • Location : 14-240 Falknowo, Polen
                              Dimensions Ecobag :
                              ~65.0 x 42.0 x 4.0 m (L x W x H)
                              Shape :
                              Rectangular
                              Application :
                              Storage of liquid content
                              Storage capacity :
                              ~10.000 m³
                              Liquid content :
                              Thin fraction of digestate from energy crops, pig/cow manure, food and slaughter waste
                            • AB Cover Denmark

                            • Location : Near the North Sea, Danemark
                              Dimensions :
                              : Ø40,33m x 6,00m
                              Storage capacity :
                              : 3.400 m³
                              Shape :
                              4 x AB Cover
                              Application :
                              Slurry and Biogas
                            • Gasbuffer France

                            • Location : Sausheim France
                              Dimensions :
                              Ø16,20m x 14,00m
                              Storage capacity :
                              ca. 2.550 m³
                              Shape :
                              3/4
                              Application :
                              Biogas
                            • Silocover with long Bellin Germany

                            • Location : Bellin Germany
                              Dimensions :
                              Ø31,17m x 6,00m
                              Shape :
                              Silocover with Lung Gastight
                              Application :
                              Biogas
                            • AB Cover Bombeck Germany

                            • Location : Bombeck Germany
                              Dimensions :
                              Ø40,95m x 9,00m
                              Storage capacity :
                              ca. 5.489 m³
                              Shape :
                              AB Cover
                              Medium :
                              Biogas
                            • AB Cover Klein Schwechten Germany

                            • Location : Klein Schwechten Germany
                              Dimensions :
                              Ø27,55m x 7,00m
                              Storage capacity :
                              1.620 m³
                              Shape :
                              AB Cover
                              Medium :
                              Biogas
                            • Gasbuffer Campillos Spain

                            • Location : Campillos Spain
                              Application :
                              Biogas
                              Shape :
                              Gasbuffer 3/4 spherical
                              Storage capacity :
                              ca. 3.000m³
                              Gasflow
                              565m³/hr
                            • AB Cover Cyprus

                            • Location : Cyprus
                              Dimensions :
                              Ø25,014m x 6,30m
                              Storage Capacity :
                              ca. 830 m³
                              Shape :
                              AB Cover
                              Medium :
                              Biogas
                            • Combibag Uddel NL

                            • Product : Combibag
                              Application :
                              Storage of manure
                              Location :
                              Uddel(NL)
                              Dimensions :
                              25 x 64 x 3,5m
                              Storage capacity :
                              ca. 5.000m³
                            • Combibag Guatamala

                            • Location : Guatamala
                              Dimensions :
                              45 x 32 x 3,5m
                              Storage capacity :
                              ca. 3.500 m³
                              Product
                              Combibag
                              Medium :
                              Storage of pig manure
                            • Combibag Andover VK

                            • Location : Andover UK
                              Dimensions :
                              54 x 30 x 3,5m
                              Storage capacity :
                              ca. 4.000 m³
                              Product :
                              Combibag
                              Medium :
                              Storage slurry
                            • AB Cover Trinidad

                            • Location : Laventille, Trinidad and Tobego
                              Dimensions :
                              Ø23,30m x 12,08m
                              Storage capacity :
                              1.232 m³
                              Shape :
                              AB Cover
                              Medium :
                              Biogas
                              Special details :
                              Installation of a large servicebox to gain easy access to the mixers
                            • AB Cover Poland

                            • Location : Falknowo Poland
                              Dimensions :
                              Ø24,20m x 8,00m
                              Storage capacity :
                              ca. 1.300 m³
                              Shape :
                              AB Cover
                              Medium :
                              Biogas
                            • AB Cover Wittenburg

                            • Location : Wittenburg Germany
                              Dimensions :
                              Ø27,74m x 6,00m
                              Storage capacity :
                              ca. 1.600 m³
                              Shape :
                              AB Cover
                              Medium :
                              Biogas
                            • Gasbuffer Belgium

                            • Location : Belgium
                              Dimensions :
                              Ø16,20m
                              Storage capacity :
                              1000 m³
                              Shape :
                              1/2
                              Medium :
                              Biogas
                            • 2x AB Cover Philippines

                            • Location : Davao City Philippines
                              Dimensions :
                              Ø22,00m x 7,50m
                              Storage capacity :
                              ca. 1.100 m³
                              Shape :
                              2x AB Cover
                              Medium :
                              Biogas
                            • AB Cover Cloppenburg

                            • Location : Cloppenburg Germany
                              Dimensions :
                              Ø25,40m x 6,00m
                              Storage capacity :
                              ca. 3.050 m³
                              Shape :
                              AB Cover
                              Medium :
                              Biogas
                            • AB Cover USA

                            • Location : Byron USA
                              Dimensions :
                              Ø32,92m x 5,49m
                              Storage capacity :
                              ca. 2.530 m³
                              Shape :
                              AB Cover
                              Medium :
                              Biogas
                            • AB Cover Lierop NL

                            • Location : Lierop Netherlands
                              Dimensions :
                              Ø17,59m x 7,00m
                              Storage capacity :
                              ca. 800 m³
                              Vorm :
                              3x AB Cover
                              Medium :
                              Biogas
                            • AB Cover Rumania

                            • Location : Rumania
                              Dimensions :
                              Ø25,52m x 7,00m
                              Storage capacity :
                              ca. 1.400 m³
                              Shape :
                              AB Cover
                              Medium :
                              Biogas
                            • Gasbuffer France

                            • Location : France
                              Dimensions :
                              Ø16,2m x 14,00m
                              Storage capacity :
                              ca. 2.500 m³
                              Shape :
                              3/4
                              Medium :
                              Biogas
                            • Combibag Bassevelde Belgium

                            • Location : Bassevelde Belgium
                              Dimensions :
                              Ø13,20 m x 2,95 m
                              Shape :
                              Combibag
                              Medium :
                              Storage of manure and biogas
                              Storage capacity :
                              380m³
                            • Silocover with lung Belgium

                            • Location : Belgium
                              Dimensions :
                              Ø9,80m x 4,00m
                              Shape :
                              Silocover with Lung Gastight
                              Application :
                              Biogas
                            • AB Cover Latvia

                            • Location : Dobeles Rajons Letland
                              Dimensions :
                              Ø21,40m x 6,00m
                              Storage capacity :
                              ca. 1.200 m³
                              Shape :
                              AB Cover
                              Medium :
                              Biogas
                            • AB Cover Esbeek NL

                            • Location : Esbeek Netherlands
                              Dimensions :
                              Ø20,40m x 6,00m
                              Shape :
                              AB Cover
                              Medium :
                              Biogas
                            • AB Cover Klein Schwechten

                            • Location : Klein Schwechten Germany
                              Dimensions :
                              Ø32,54m x 8,02m
                              Storage capacity :
                              ca. 2.430 m³
                              Shape :
                              AB Cover
                              Medium :
                              Biogas
                            • AB Cover Langwetzendorf

                            • Location : Langwetzendorf Germany
                              Dimensions :
                              Ø29,90m x 6,00m
                              Storage capacity :
                              3.085m³
                              Shape :
                              AB Cover
                              Medium :
                              Biogas
                            • AB Cover Denmark

                            • Location : Jutland Denmark
                              Dimensions :
                              Ø37,80m x 6,00m
                              Storage capacity :
                              ca. 3.075m³
                              Shape :
                              AB Cover
                              Medium :
                              Biogas
                            • AB Cover Stiens NL

                            • Location : Stiens Netherlands
                              Dimensions :
                              Ø15,50m x 6,00m
                              Storage Capacity :
                              675 m³
                              Shape :
                              AB Cover
                              Medium :
                              Biogas
                            • AB Covers Rahden Germany

                            • Location : Rahden Germany
                              Dimensions :
                              2x Ø32,48m x 8,00m
                              Storage Capacity :
                              ca. 1.920 m³
                              Shape :
                              AB Cover Medium : Biogas
                            • AB Cover Vliermaal Belgium

                            • Location : Vliermaal Belgium
                              Dimensions :
                              Ø35,28m x 6,00m
                              Storage capacity :
                              ca. 2.499 m³
                              Shape :
                              AB Cover
                              Medium :
                              Biogas
                            • AB Cover Brunau Germany

                            • Location : Brunau Germany
                              Dimensions :
                              Ø40,98m x 8,02m
                              Storage capacity :
                              ca.4.235 m³
                              Shape :
                              AB Cover
                              Medium :
                              Biogas
                            • AB Cover Zeewolde NL

                            • Location : Zeewolde
                              Dimensions :
                              Ø25,37m x 6,00m
                              Storage Capacity :
                              966 m³
                              Shape :
                              AB Cover
                              Medium :
                              Biogas
                            • Gasbuffer Turkey

                            • Location : Turkey
                              Dimensions :
                              Ø19,80m x 14,90m
                              Storage capacity :
                              ca. 3.000 m³
                              Shape :
                              3/4
                              Application :
                              Biogas
                          • WWTP PROJECTS

                          • Waste water treatment plants…
                            Wiefferink provides solutions for safe (temporary) storage of water. In addition we provide customized solutions for flexibele coverings for water treatment. We are active in the following sectors: regional water authorities and governments.
                              • Silocover Den Bosch NL

                              • Solution : Rotating silocover
                                Shape :
                                Single membrane non gastight
                                Medium :
                                Storage of waste water
                                Dimensions :
                                5165 cm
                                Location :
                                Den Bosch NL
                              • Biogas Reactor Portugal

                              • Location : Dardico Portugal
                                Medium :
                                Storage of manure and agricultural crops
                                Shape :
                                Biogas reactor
                                Dimensions :
                                Ø27,8m x 6,00 m
                              • Gasbuffer Dendermonde Belgium

                              • Location : Dendermonde Belgium
                                Dimensions :
                                Ø15,40m x 11,50m
                                Storage capacity :
                                1390 m³
                                Shape :
                                3/4
                                Medium :
                                Biogas
                              • Silocover Texas USA

                              • Location : Texas USA
                                Medium :
                                Storage of water
                                Shape :
                                Silocover single membrane non gastight
                                Dimensions :
                                Ø30,6m x 4,75 m
                              • Silocover United Arab Emirates

                              • Bauort : United Arab Emirates
                                Medium :
                                Storage of water
                                Shape :
                                Silocover single membrane non gastight
                                Dimensions :
                                Ø 59,34m x 6,86m
                              • Silocover Losser NL

                              • Location : Losser Netherlands
                                Dimensions :
                                3 x Ø17,52m x 3,5 m
                                Shape :
                                Single Membrane, non gastight
                                Medium :
                                Storage of liquid
                              • Silocover Zwolle NL

                              • Location : Zwolle Netherlands
                                Dimensions :
                                2 x Ø11,27m
                                Shape :
                                Single membrane, non gastight
                                Medium :
                                Storage of thick sludge and thin sludge
                                Special :
                                Silocover out of 2 halves
                              • Silocover Duiven NL

                              • Location : Duiven Netherlands
                                Dimensions :
                                Ø10,23m x 7,03m
                                Shape : Single membrane non gastight
                                Medium :
                                Storage of waste
                              • Silocover Hengelo NL

                              • Location : Hengelo
                                Dimensions :
                                Ø20,50m x 6,00m
                                Shape :
                                Single Membrane, 2x halves can be completely opened
                                Medium :
                                Storage of wastewater
                              • Silocover Nijverdal NL

                              • Location : Nijverdal, Netherlands
                                Dimensions :
                                Ø13,75m x 6,0 m
                                Type Roof :
                                Single membrane, non gastight
                                Application :
                                Storage of liquid content
                              • Silocover Goor NL

                              • Location : Goor Netherlands
                                Medium :
                                Storage of waste water
                                Shape :
                                Silocover single membrane non gastight
                                Dimensions :
                                60x40x3,20m
                              • Gasbuffer Turkey

                              • Location : Kayseri Turkey
                                Dimensions :
                                Ø19,80m x 14,90m
                                Storage capacity :
                                3.000 m³
                                Shape :
                                3/4
                                Medium :
                                Biogas
                              • Silocover France

                              • Location : Fouesnant France
                                Medium :
                                Storage of manure
                                Shape :
                                Single membrane, non gastight
                                Dimensions :
                                Ø23,00m x 6,28m
                              • Silocover Oldenzaal NL

                              • Location : Oldenzaal
                                Dimensions :
                                Ø14,83m x 3,50m
                                Type Roof :
                                Single membrane, non gastight
                                Medium :
                                Storage of liquid content
                              • Mesh cover Weert NL

                              • Location : Weert Netherlands
                                Dimensions :
                                Ø16,55m x 5,00m
                                Shape :
                                Mesh cover
                                Medium :
                                Storage sludge discharge buffer
                              • Cover overflow gutter

                              • Location : Den Bosch Netherlands
                                Dimensions :
                                Ø48m
                                Shape :
                                Cover overflow gutter
                              • Silocover Den Helder NL

                              • Location : Vriezenveen
                                Dimensions :
                                Ø9,12m
                                Type Roof :
                                Single membrane, non gastight, custom made
                                Medium :
                                Storage of liquid content
                              • Silocover Vriezenveen NL

                              • Location : Rijssen
                                Dimensions :
                                Ø14,90m x 4,00m
                                Type Roof :
                                Single membrane, non gastight
                                Medium :
                                Storage of liquid content
                              • Silocover Rijssen NL

                              • Location : Enschede
                                Dimensions :
                                Ø20,50m
                                Type Roof :
                                Single membrane, non gastight
                                Medium :
                                Storage of liquid content
                              • Silocover Enschede NL

                              • Location : Steenwijk
                                Dimensions :
                                Ø18,60m x 4,00m
                                Type Roof :
                                Single membrane, non gastight
                                Medium :
                                Storage of liquid content
                              • Silocover Steenwijk NL

                              • Location : Hoogezand Sappemeer
                                Dimensions :
                                Ø21,97m x 3,00m
                                Type Roof :
                                Single membrane, non gastight
                                Medium :
                                Storage of liquid content
                              • Silocover Sappemeer NL

                              • Location : Hoogezand Sappemeer
                                Dimensions :
                                Ø21,97m x 3,00m
                                Type Roof :
                                Single membrane, non gastight
                                Medium :
                                Storage of liquid content
                              • Silocover Diever NL

                              • Location : Diever
                                Dimensions :
                                Ø21,90m x 3,50m
                                Type Roof :
                                Single membrane, non gastight
                                Medium :
                                Storage of liquid content
                              • Silocover Alkmaar NL

                              • Location : Alkmaar
                                Dimensions :
                                Ø17,60m x 6,00m
                                Shape :
                                Single membrane non gastight Medium : Storage of waste water
                            • INDUSTRY PROJECTS

                            • We provide customized solutions for flexible coverings for the industry sector.
                                • Flexitank Utrecht

                                • Location : Utrecht Netherlands
                                  Dimensions :
                                  233 x 565 x 110 cm
                                  Contents :
                                  15m³
                                  Shape :
                                  Flexitank
                                  Medium :
                                  Storage of drinking water
                                • Gasbuffer in 40ft seacontainer

                                • Form : Gasbuffer in 40ft Seacontainer
                                  Dimensions :
                                  10,0 x 2,5 x 2,6mtr
                                  Storage capacity :
                                  65 m³
                                  Medium :
                                  60% Air with 40% CO2
                                • Silocover Schiphol

                                • Location : Schiphol
                                  Dimensions :
                                  Ø32,64m x 7,00m
                                  Shape :
                                  Silocover single membrane non gastight
                                  Medium :
                                  Storage de-icing
                                • Wood chips silo Italy

                                • Location : 29012 Caorso (PC) – Italy
                                  Dimensions :
                                  Ø18,50 x 12.0m
                                  Shape :
                                  Silocover non gastight on a self supporting construction
                                  Application
                                  : Protect wood chips for weather infuences
                                  Details :
                                  Filled from above through a conveyor-belt and and emptied from the bottom through a piston..
                                • Heat storage bag

                                • Location : Different development sites in the Netherlands
                                  Dimensions :
                                  Standard 4,0 x 6,0 x 0,5m³
                                  Details :
                                  The heat storage bag will be measured on site and than produced custom made
                                  Medium :
                                  Storage of thermal energy to use during cold periods
                                • Lagoon cover

                                • Location : Belgium
                                  Dimensions :
                                  68,50m x 52,50m
                                  Shape :
                                  Lagoon cover
                                • Silocover Vlissingen

                                • Location : Vlissingen Netherlands
                                  Medium :
                                  Silocover on a cable basket
                                  Shape :
                                  Single membrane non gastight
                                  Dimensions :
                                  Ø 14,20m
                                • Temporary Roof

                                • Shape : Temporary cover as roof on a pilot plant
                                  Dimensions :
                                  21,76m x 8,40m x 5,50m
                                  Details :
                                  The cover has been pulled as a shell around the construction underneath
                                • Wood chips silo France

                                • Location : 76190 Yvetot France
                                  Dimensions :
                                  Ø18,50 x 19,0m
                                  Shape :
                                  Silocover non gastight on a self supporting construction
                                  Application :
                                  Protect wood chips for weather infuences
                                • Co2 Buffer Sirjansland

                                • Location : Sirjansland Netherlands
                                  Dimensions :
                                  Ø22,00m x 16,50m
                                  Storage capacity :
                                  4000m³
                                  Shape :
                                  3/4
                                  Medium :
                                  Buffer Storage of Co2
                                • Gasbuffer Switzerland

                                • Location : Zürich Switzerland
                                  Dimensions :
                                  Ø13,71m x 5,30m
                                  Storage capacity :
                                  1000m³
                                  Medium :
                                  Biogas
                                • AB Cover Puerto Rico

                                • Location : Puerto Rico
                                  Dimensions :
                                  Ø14,67m x 14,00m
                                  Storage capacity :
                                  ca. 620 m³
                                  Shape :
                                  AB Cover
                                  Medium :
                                  Biogas
                                • AB Cover Spakenburg NL

                                • Location : Spakenburg Netherlands
                                  Dimensions :
                                  Ø17,98m x 6,00m
                                  Storage Capacity :
                                  ca. 814 m³
                                  Shape :
                                  AB Cover
                                  Medium :
                                  Biogas
                                • 2x Silocover Halle Germany

                                • Location : Halle Germany
                                  Shape :
                                  2x Silocover single membrane non gastight
                                  Dimensions :
                                  Ø14,67m x 7,00m