The causes of non-filamentous activated-sludge bulking in a long-term pilot-scale sequencing batch reactor (SBR) - 文章详情页

作者：

Yang, P. (Yang, P..) | Wang, S. (Wang, S..) | Gu, S. (Gu, S..) | Peng, Y. (Peng, Y..) | Yang, Q. (Yang, Q..)

收录：

Scopus PKU CSCD

摘要：

Activated-sludge　bulking　was　found　in　a　pilot-scale　SBR　with　long-term　operation　over　200　days,　fed　with　real　domestic　wastewater.　This　paper　focuses　on　the　analysis　of　the　relationship　between　sludge　bulking　and　factors　such　as　temperature,　the　content　of　extracellular　polymeric　substances　(EPS),　sludge　loading　and　DO.　The　results　showed　that　non-filamentous　activated-sludge　bulking　generally　occurred　at　low　temperature　(16°C),　which　led　to　poor　settleability　of　the　sludge.　The　MLSS　of　the　SBR　gradually　decreased　to　less　than　1200　mg·L-1　when　non-filamentous　activated-sludge　bulking　was　found　in　the　system.　The　content　of　EPS　in　the　bulking　sludge　was　higher　than　that　in　the　normal　sludge,　and　bulking　sludge　was　difficult　to　recover　although　DO　and　temperature　were　2.0　mg·L-1　and　20°C,　respectively.　Finally,　the　reasons　causing　activated-sludge　bulking　were　analyzed　and　preventive　approaches　are　suggested.

关键词：

Domestic wastewater; EPS; Non-filamentous activated-sludge bulking; Pilot-scale SBR; Temperature

作者机构：

[ 1 ] [Yang, P.]Key Laboratory of Beijing Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Wang, S.]Key Laboratory of Beijing Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Gu, S.]Key Laboratory of Beijing Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Peng, Y.]Key Laboratory of Beijing Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
[ 5 ] [Yang, Q.]Key Laboratory of Beijing Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China

通讯作者信息：

[Wang, S.]Key Laboratory of Beijing Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China

电子邮件地址：

wsy@bjut.edu.cn

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