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《Environmental Science and Technology》 2010-06
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Sludge Reduction Technology Based on Micro-fauna Predation Activity

LI Hong-mei  
Sludge reduction technology is based on micro-fauna predation activity including submerged biofilm(SB),two-stage bioreactor,micro-fauna inoculated wastewater treatment system and microbial-earthworm biofilter system(MEES).With the advantages of simple process,convenient operation and lower costs,SB and MEES have been used in industrial practice and proved to be effective in sludge reduction without affecting treated water quality.Further researches have to be conducted for decrease the concentration of P and N in treated water in these technologies above.It is necessary to optimize these sludge reduction process to control sludge bulking and foaming which often happened in two-stage bioreactor process,and to solve the problem of uneven water distribution,impounded water and biofilter clogged by sludge.To improve the predation activity of micro-fauna and understand kinetics of food chain in these technologies above,further researches on dynamic equilibrium metabolism pathway of food chain,effects of parking particle characteristics,hydraulic loading,pollutant loading and temperature on the growth of food chain need to be conducted.
【Fund】: 北京市教委劳动卫生与环境卫生科技创新平台资助(PXM2009-014205-074352)
【CateGory Index】: X703
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Chinese Journal Full-text Database 10 Hits
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