How does a biogas digester treat wastewater?
The main treatment process in a biogas digester is sedimentation and anaerobic digestion. As wastewater flows into a digester, the heavier solid particles aettle down and anaerobic bacteria become active and start digesting organic material in the wastewater. The effluent from the biogas digester is partially treated (30-40% BOD and COD removal depending on the retention time provided) and needs further treatment for reuse applications.
