Enhanced hydrolysis of carbohydrates in primary sludge under biosulfidogenic conditions

Effects of various pretreatments on biological sulfate reduction with waste activated sludge as electron donor and waste activated sludge diminution under biosulfidogenic condition

“…The resulting hydrolysis products of the WAS contain large amounts of low molecular weight organic compounds, which can potentially be used as electron donors for biosulfidogenesis [8,9]. Digestion of WAS with simultaneous biological sulfate reduction offers other significant advantages over conventional methanogenic conversion too [10]. Therefore, by coupling the biological sulfate reduction process with hydrolysis of WAS, we may significantly reduce the cost of the process (since the electron donor used here, WAS, is free of charge), and at the same time dispose of the undesired WAS efficiently.…”