Effects of temperature and sludge concentration on waste activated sludge alkaline hydrolysis and dewaterability - 文章详情页

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Scopus PKU CSCD

摘要：

Waste　activated　alkaline　hydrolysis　can　produce　short-chain　fatty　acids　that　can　be　applied　into　the　sewage　nitrogen　and　phosphorus　removal　process;　however,　it　also　causes　the　deterioration　of　the　dewaterability.　This　experiment　investigated　the　anaerobic　hydrolysis　process　and　dewaterability　of　waste　activated　sludge　in　20　days　under　various　total　suspended　solids　(TSS)　and　temperatures　at　pH=10.　Conclusions　are　as　follows:　at　25°C,　sludge　dewaterability　deteriorated　with　the　increase　of　TSS　and　then　changed　little.　SCOD　kept　stable　after　progressively　increasing.　At　35°C,　sludge　dewaterability　deteriorated　with　the　increase　of　TSS　first,　and　then　increased　slightly.　The　changes　of　SCOD　brought　into　correspondence　with　SCOD　at　25°C.　SCOD　and　normalized　CST　had　a　significant　positive　correlation.　Higher　temperatures　caused　higher　leaching　SCOD　and　slightly　worse　dewaterability.　TSS　influenced　the　dewaterability　of　sludge　more　significantly　than　temperature.

关键词：

Dewaterability; Hydrolysis; Sludge concentration; Total suspended solids (TSS); Waste activated sludge

作者机构：

[ 1 ] [Zheng, B.-Y.]Key Laboratory of Beijing for Water Quality Science and Water Environmental Recovery Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Su, G.-Q.]Key Laboratory of Beijing for Water Quality Science and Water Environmental Recovery Engineering, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Zhang, L.]School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
[ 4 ] [Ma, B.]School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
[ 5 ] [Wang, S.-Y.]Key Laboratory of Beijing for Water Quality Science and Water Environmental Recovery Engineering, Beijing University of Technology, Beijing 100124, China
[ 6 ] [Peng, Y.-Z.]Key Laboratory of Beijing for Water Quality Science and Water Environmental Recovery Engineering, Beijing University of Technology, Beijing 100124, China
[ 7 ] [Peng, Y.-Z.]School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China

通讯作者信息：

[Zheng, B.-Y.]Key Laboratory of Beijing for Water Quality Science and Water Environmental Recovery Engineering, Beijing University of Technology, Beijing 100124, China

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bingbing19870403@163.com

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