More Gas, Less Sludge

Westfalia Separator biogasplus boosts the biogas yield by 25 percent and reduces the volume of sludge by the same extent. The intelligent combination of homogenisers and centrifugal decanters. opens up a new dimension of cost-efficiency. 

The new Westfalia Separator biogasplus process combines low-pressure homogenisers from GEA Niro Soavi and decanters from Westfalia Separator Umwelttechnik, to form an efficient process line without any interface problems. The entire process is in the hands of Westfalia Separator Umwelttechnik. The customer gets his individual solution as well as all components of the tried-end-tested functional entities featuring a plug-and-play concept from one single source.  

Westfalia Separator biogasplus can be easily implemented by installing an external cycle on the digestion tank.  Before the decanter efficiently dewaters the digested sludge, the digested sludge is first processed with the low-pressure homogeniser. The sludge is fed through a homogeniser valve under pressure to split up the agglomerates and to isolate, i.e. homogenize the microorganisms.  This process increases the reaction area, which in turn results in increased gas production and a reduced volume of sludge. The pressure in this process is selected so as to maintain the cells intact instead of disintegrating them. Digestion times are reduced, lower quantities of flocculents are required for dewatering purposes, and there is no increase in COD contamination.

Westfalia Separator biogasplus consistently reduces operating problems attributable to the structure of the sludge, such as flotation sludge or foaming in the digestion tank. When a  new  installation is constructed, the costs are reduced by up to 25 percent because less digestion tank volumes are needed. The amortisation times for retrofitting existing installations are also short. The Westfalia Separator biogasplus concept is perfectly adapted to conditions on site.