Whether as a source of electricity to generate heat locally, to supply heat by pipeline or to feed into the gas network after processing - Biogas is multi-talented and versatile. The weather-independent generation is a predictable source of revenue for the operator, since energy from biogas is subject to any price fluctuations. At the same time, a biogas plant actively contributes to environmental protection and energy mix of the future.
Agricultural companies have the opportunity of generating valuable, sustainable and renewable energy with by-products of their business such as liquid manure, biomass and organic agricultural waste. Generating biogas offers plant operators a source of revenue that can be accurately calculated for years – which is a factor that can be decisive for the long-term prospects of a farming business.
Waste materials and by-products are accrued in conjunction with every single manufacturing operation, such as enterprises associated with the food and restaurant sector, the fuel industry, the cosmetics sector and the animal husbandry sector.
However, the quantity of organic waste produced by the citizenry is also significant for communes – about half a tonne per year per person.
In addition to saving you the trouble of disposing of your residual products, our biogas technology also makes it possible for you to convert the waste into useful energy.
Advantages for producers:
At biogas plants, highly contaminated surface water is found near roadways and silos. Channelling this into ditches and waterways is increasingly frowned upon by surveillance authorities and the general public. As an alternative to the expensive construction of new storage containers, our subsidiary A3 Water Solutions GmbH has developed EnviDrain and EnviClear: a low-cost, all-in-one technical solution for the handling of contaminated surface water. The solution works by preventing soiling in the first place while also reducing its environmental impact.
Prevention - EnviDrain
The compression of maize silage means that the silage effluent cannot drain away through the installed gullies as intended. In addition, the gullies on the silage slab often become clogged with maize, resulting in effluent becoming backed-up. It then spills over the sides, where it mixes with rain water.
This is where EnviDrain comes in: it offers a clog-free drainage system for the effluent. The special fleece material increases the effective drainage surface area 500-fold, keeping rain water clean and allowing contaminated water to be properly routed to the biogas plant.
The EnviDrain material is easily installed before silage storage and can be driven over safely even if covered by only a shallow layer (30 cm) of maize.
Routing - The intelligent separator
Often, rain water and highly contaminated surface water end up in the same tank – whether due to a failure to separate silage effluent and rain water or as a result of rain water runoff being collected from soiled roadways.
To lessen the burden on the downstream EnviClear plant while making effective use of organic materials, an intelligent separator is used at this point in the system: it measures the contamination level and decides how the water should be routed automatically.
Upstream of the catch basin, the separator sends
Treatment - EnviClear
To ensure compliance with threshold values for discharges, even moderately or slightly contaminated water must also be treated:
it is therefore collected in a tank and pumped to the EnviClear plant as a continuous process. The lowmaintenance EnviClear process is based on the proven membrane revival method, a combination of biological degradation and membrane filtration. The pores in the MaxFlow membranes used are so small that only water molecules may pass through them – but bacteria and particulates are trapped. As a result, only clean water is discharged.
If necessary, we can provide you with a packaged solution, consisting of planning, construction, service and operation monitoring.
Owing to their nutrient density and decreased odour, fermentation residues are exceptionally suitable as fertilisers. But how can we save storage and transportation costs and still protect the environment? Our subsidiary, A3 Water Solutions GmbH, has developed a holistic modular concept for the processing of accumulated fermentation residues. The membrane process separates the fermentation residues into solid and liquid parts and thus provides fertiliser products that can be transported, stored and sold. Nutrients in the appropriate form can thus be distributed exactly at the places where they are required.
The process results in three individually usable substances:
We offer a personal on-site consultation to clarify whether a digestate processing system is worthwhile for your company and what benefits it will provide.
You want to get the highest return of your investment? So do we. The new plant technology is far more efficient than it was years ago. Moreover, as the owner of the existing plant, you want to stay competitive. Your system can be most easily adapted to the latest technological developments. An investment in the" health" of your investment is worthwhile, because it usually pays for itself in a short time.
Depending on the plant quality we offer
Several companies and communes make use of the financial assistance that the political system provides for the realisation of the energy-related potential of waste management or just benefit from producing their own energy. Since the year 2002, we have developed technologies for biogas plants that produce impressive income from food waste, glycerine, slaughterhouse waste and fats.
Biomethane upgrading opens up a promising future market for the biogas industry. With feed-in into the public natural gas grid, the green all-rounder is perfect for the decentralised supply of energy, offering a long-term replacement for fossil natural gas and driving the energy transition forward. What’s more, the biomethane manufactured in the gas upgrading plant has the exact same properties as natural gas, being just as flexible in its usage and easier to store than other energy sources. Plus, it’s renewable.
Anaerobic digestion of organic materials creates a gas composed of methane and carbon dioxide. To upgrade the biogas to natural gas-quality biomethane, the crude gas is first purified and compressed. The membrane technology we use then exploits the different sizes and permeation speeds of the two kinds of gas molecules involved: since carbon dioxide molecules are smaller than methane molecules, they can migrate through the membrane much more quickly. As a result, the methane remains on the high-pressure side, while the CO2 molecules in the biogas pass through. As a result, the gas upgrading needs neither chemicals nor water nor any other resources.
The starting point for producing biomethane doesn’t have to be biogas, however. After a preliminary purification stage, gas from landfill and wastewater treatment plants can also be used to produce biomethane.
The biomethane so produced is the all-rounder among renewable energy sources, and can replace fossil fuel-based natural gas anywhere it is used. On the following pages, you can find out about the many uses for this valuable and renewable natural gas, and how it can play a part in an environmentally-friendly energy supply system.
The advantages of biomethane at a glance:
Before biogas can be fed into the natural gas grid or used as a fuel, it must first be upgraded to natural gas quality. Our answer to the requirements of the future is therefore EnviThan – our integrated solution from organic waste to the filling station pump!
Our technology and your advantages at a glance:
Cost-effective, efficient and reliable technology, plus smart business models that cover the entire value chain for the biomethane market. Our expertise is in demand worldwide.