ByoFlex® 2x 10 for agricultural digester in Veneto region, Italy

The client is digesting agricultural feedstocks combined with a large portion of ‘dry’ chicken manure. The aim is producing biomethane to be injected into the grid. Because of the high nitrogen content in the feedstock the client's challenge is preventing ammonium inhibition in the AD’s biology, and therewith stagnation of biogas production.  Simply diluting with fresh water isn’t feasible since this would result in unreasonable digestate discharge volumes.

Ammonium Control and Reuse  -  As the solution the thin fraction is drastically reduced in ammonium with the ByoFlex®2x10 system, after which the major part of the thin fraction is pumped back (recycled) to the front end of the AD to dilute the incoming feedstock.

End of Pipe - The remaining thin fraction is stripped because therewith it is being land applied on reduced land area (in the region) which significantly lowers transport and spreading costs.