Kinetic analysis of waste activated sludge hydrolysis and short-chain fatty acids production at pH 10

查看全文 作　　者：FENG Leiyu, YAN Yuanyuan, CHEN Yinguang State key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.

出　　处：《Journal of Environmental Sciences》索引2009年第21卷第5期,共6页

基　　金：supported by the Hi-TechResearch and Development Program (863) of China(No. 2007AA06Z326);the Key Projects of National Wa-ter Pollution Control and Management of China (No.2008ZX07315-003, 2008ZX07316-002);the Key Lab-oratory of Environmental Science and Engineering ofJiangsu Province (No. ZD071201). 摘　　要：The accumulation of short-chain fatty acids (SCFAs), a preferred carbon source for enhanced biological phosphorus removal microbes, was significantly improved when waste activated sludge (WAS) was fermented at pH 10. The kinetics of WAS hydrolysis and SCFAs production at pH 10 was investigated. It was observed that during WAS anaerobic fermentation the accumulation of SCFAs was limited by the hydrolysis process, and both the hydrolysis of WAS particulate COD and the accumulation of SCFAs followed first-order kinetics. The hydrolysis and SCFAs accumulation rate constants increased with increasing temperature from 10 to 35°C, which could be described by the Arrhenius equation. The kinetic data further indicated that SCFAs production at pH 10 was a biological process. Compared with the experiment of pH uncontrolled (blank test), both the rate constants of WAS hydrolysis and SCFAs accumulation at 20°C were improved significantly when WAS was fermented at pH 10. 关键词：脂肪酸生产水解过程动力学分析短链脂肪酸活性污泥 pH值 Arrhenius方程废物

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Kinetic analysis of waste activated sludge hydrolysis and short-chain fatty acids production at pH 10

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