AAT Abwasser- und Abfalltechnik GmbH products

The AAT heat exchanger is used to heat the digester sludge in the digester. For perfect fermenterind conditions,a constant sludge temperature is required in the digester. In order to achieve this, the digester sludge is circulated in a pipe heat exchanger and is heated to the requested temperature through hot water in a counterflow procedure. With respect to sludge quality, performance and energy efficiency, the heat exchangers are optimisted for the respective case of application.

Advantages: Minimized investment costs, long life span due to gentle operation, low operation and maintenance costs, no steel parts exposed to biogas, gas pressure can be adjusted to demand of downstream consumers, membrane housing can be adapted to local site conditions, membrane installation in existing building is possible.

The outer membrane forms the actual protective construction and is always under a for the statics necessary positive pressure. Through a built-in viewing window the operations inside can be observed at any time. The actually usable holder forms the inner membrane. This membrane moves up or downwards depending on the filling level. In the gas holder with base plate a bottom membrane seals the storage space to the concrete foundation. With the help of the anchoring ring, the membranes are attached to the foundation.

AAT flares of type FA 50-1800 are used for the combustion of bio-, sewage- or landfill gas. We also supply flares for the combustion of hydrogen.