Abstract:In this experiment primary sludge (PS), waste activated sludge (WAS) and a mixture of WAS with PS were fermented at 21 o C. The sludges were collected from two plants: the biological nutrient removal (BNR) WestEnd Water Pollution Control Center (WEWPCC) and carbonremoval only SouthEnd WPCC (SEWPCC). The batch fermentation test showed that the primary sludge fermentation generated significantly higher amount of soluble COD than WAS. WAS fermentation released considerable amounts of phosphate and ammonium. Cofer… Show more
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