AAT BIOGAS Technology
Reliable Technology for commercial success
AAT offers plant design, process technology and equipment for processing of organic waste and purification of highly contaminated waste water with simultaneous energy production.
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Digestate evaporation for biogas plant
Four-stage vacuum evaporator
At our customer Jakob Bösch AG in Switzerland a digestate evaporation system was integrated into the existing biogas plant. The volume of digested material is reduced by the evaporation and the product ASL, ammonium sulphate solution, is obtained. In addition, the nitrogen concentration in the fertilizer can be lowered due to the nutrient balance of the evaporation and thus the nitrogen/phosphorus ratio per hectare of application area can be optimized.
Facts about the project:
Four-stage vacuum evaporation: The first stage is heated with the thermal energy of the CHP, for the further evaporation stages the vapour condensation of the previous stage is used.
Input:
Digestate: 35.000 t/a
Sulphuric acid
Output:
Distillate: 19.000 t/a
Concentrate: 14.000 t/a.
Ammonium sulphate solution, ASL: 2.000 t/a. Mineral fertilizer
Company services
AAT builds biogas plants for kitchen waste, whey, sugar beets, POME, organic waste, MSW, slope, potatoes, municipal sludge, brewer grains, melasse, presscake, olives, FOG, bread and a lot of other substrates.
We deliver everything from one source. From design, supply of plant components, assembly, start up, biological support to after sales service. Our speciality is the unique hydraulic mixing digester.
Our core business is the treatment of industrial and municipal sludge, biowaste, agriculture feedstock and energy crops.
References
AAT Abwasser-und Abfalltechnik GmbH has realized a lot of successful biogas plants. Here you can find a selection of our profitable Waste to Energy plants, Sludge Digesters, Whey treatment plants or Energy Crop plants.
We will be happy to provide you with further references and detailed information about our projects on request.
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