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Smaller quantity of end product for disposal

Cambi THP improves both digestion and dewaterability after digestion with up to 45% DS (Dry Solids). The mass reduction is significant, by 40% - 70%. This leads to less material handling and transport, and less water evaporation for sludge drying. Two factors give less biosolids after digestion and dewatering:

  • By converting more sludge mass to biogas, there is less material left to dewater.
  • By dissolving naturally occurring cell polymers (exopolymeric substances - EPS), a form of protein, dewatering is improved by releasing water bound in EPS (EPS binds 4–5 g water / g EPS).

 

 

The dry solids content of the sludge increased from an average of 20% to 31%, within the first full year of Cambi THP operations. Cake production decreased to less than half. No load change occurred in the wastewater treatment plant within the same period ”.
KAPUSCISKA WWTP, BYDGOSZCZ, POLAND