A mechanical pretreatment of waste-activated sludge for HS decrease on anaerobic digestion |
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| Authors: | Hong-Bok Choi Kyung-Yub Hwang Eung-Bai Shin |
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| Institution: | (1) Environment Research Center, KIST, P.O. BOX 131, Cheongryang Seoul, Korea;(2) Department of Civil Engineering, Hanyang University, Seoul, Korea |
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| Abstract: | To decrease the HS and induce effective anaerobic digestion of waste-activated sludge (WAS), the micro-organisms concentration within the sludge were ruptured by a mechanical jet stream and smashed under a pressure of 30 bar. Using this procedure, the HS concentration was decreased from 30-50 mg/l of intact WAS to 27-240  g/l. |
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