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AAT Abwasser- und Abfalltechnik GmbH
Konrad-Doppelmayr-Straße 17
6960 Wolfurt
Phone: +43 (0)5574 65190-0
Fax: +43 (0)5574 65185-6
Year founded: 1993
Plant for production waste materials, 1.6 MWel, USA
Whey fermentation, 500 kWel, Austria
Hydraulic fermenter
Plant for renewable raw materials, 1 MWel, Austria

AAT Abwasser- und Abfalltechnik GmbH

Biogas technology at its most advanced! Your experienced partner for difficult tasks

Liquid manure and co-substrate plant, 1.4 MWel, Slovenia

AAT GmbH was founded in 1993, though the employees’ expertise is drawn from 31 years of experience in biogas plant construction. AAT supplies anaerobic plants (biogas plants) for processing organic production waste materials which simultaneously generate energy. The company’s core competence lies in systems for treating and processing industrial production waste materials, food waste, renewable raw materials, agricultural substrates and municipal sludge. Our primary services include planning, consulting, construction management, equipment supply, start-up support and after-sales service. Thanks to our extensive knowledge, we provide well-thought-out plant concepts as well as sophisticated standard solutions, and regularly develop tailor-made solutions.

AAT offers the following main components: substrate pretreatment systems, digesters, agitators, gas holders, gas extraction equipment, desulphurisation plants, gas flares, control and safety devices, and control systems. The input materials determine the technology used. AAT offers unique solutions for an extremely wide range of demands.

Examples include: the MSB digester for whey fermentation and purification, which enables whey to be fed into the municipal wastewater treatment plant.

The hydraulic digester, designed in accordance with the AAT alternating pressure system, is a unique system for several reasons. It has no mechanical components such as agitators, the biogas produced in the digester drives mixing and substrate discharge, sediment and scum are discharged effectively and the flow is defined without short-circuit current.

This system offers the following advantages: maximum degree of process stability, high degradation rate of organic matter, high energy yield, low susceptibility to faults and extremely low operating and maintenance costs.

The digester has been used successfully for a large variety of mono-substrates and mixed substrates such as: slop, food waste, organic waste, liquid manure, renewable raw materials, potato waste and sewage sludge.

All our plants comply with industrial standards.