With the sewage sludge from your sewage treatment plant, the most typical sludge consists of Main and secondary sludge, wherever the principal sludge would be the sludge collected from the primary clarifier, and also the secondary sludge is the surplus-activated sludge (Nielsen and Stefanakis 2020). As to the onsite sanitation https://sludge-dewatering59135.fitnell.com/69592036/the-2-minute-rule-for-tilting-plate-type-clarifier