Substrate Pretreatment

Cooker

– efficient substrate digestion!

High fibre content in grass and manure is hard for bacteria to digest. The answer we recommend is to install a thermal substrate processor and additional biogas additives for substrates that are difficult to digest. With this additional process the substrate is heated in our “Cooker” on its way from the digester to the post-digester. The raw fibre content that has been mechanically separated in this way is more acceptable to bacteria. The result, dependent on the material composition, is a 5% higher gas yield.