Influential factors of extracellular polymer substances in activated sludge hydrolysis and acidification - 文章详情页

作者：

Gao, Y.-Q. (Gao, Y.-Q..) | Peng, Y.-Z. (Peng, Y.-Z..) (学者：彭永臻) | Wang, J.-L. (Wang, J.-L..) | Wang, S.-P. (Wang, S.-P..) | Zhang, J.-Y. (Zhang, J.-Y..)

收录：

Scopus PKU CSCD

摘要：

Variation　of　extracellular　polymer　substances　(EPS)　during　activated　sludge　hydrolysis-acidification　process　and　influential　factors　including　temperature,　pH,　sludge　characteristic　and　sludge　concentration　were　investigated　at　ambient　temperature　by　batch　experiments.　pH　and　sludge　characteristic　had　an　important　effect　on　the　EPS　composition　and　amount.　Under　strong　acidic　(pH=3,　4)　and　strong　basic　condition　(pH=11)　the　yields　of　EPS　was　one　time　higher　than　that　of　neutral　condition.　However,　under　strong　acidic　condition,　much　more　biologic　cells　were　broken　and　DNA　accounted　for　20%　of　total　EPS,　while　carbohydrate　mass　accounted　for　80%　of　total　EPS　under　strong　alkaline　condition.　The　yield　of　EPS　produced　by　A/O　sludge　was　the　highest　with　an　average　value　of　41.1　mg/gVSS　followed　by　SBR　sludge,　A2/O　sludge　and　OD　sludge.　The　ratios　of　polysaccharide　to　protein　(φ)　for　OD　sludge　was　the　lowest.　When　temperature　increased　from　18°C　to　35°C,　the　EPS　yields　grew　by　50%　and　the　percentage　of　polysaccharide　in　total　EPS　rised　gradually.　EPS　yields　could　be　38.1　mg/gVSS　when　the　MLSS　increased　from　2000　mg/L　to　6000　mg/L,　however,　the　EPS　yields　would　decrease　to　23.1　mg/gVSS　if　the　MLSS　increased　to　8000　mg/L.

关键词：

EPS yields; Hydrolysis-acidification; Waste activated sludge

作者机构：

[ 1 ] [Gao, Y.-Q.]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Peng, Y.-Z.]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Wang, J.-L.]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Wang, J.-L.]School of Environmental and Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
[ 5 ] [Wang, S.-P.]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
[ 6 ] [Zhang, J.-Y.]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China

通讯作者信息：

彭永臻
[Peng, Y.-Z.]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China

电子邮件地址：

pyz@bjut.edu.cn

查看成果更多字段

成果类型
所属机构

所有年份指定年份从至