Analysis of the fate and variation of phosphorus in a granular sludge sequencing batch reactor (SBR) - 文章详情页

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摘要：

A　laboratory　sequencing　batch　reactor　(SBR)　was　fed　with　activated　sludge　flocs　for　simultaneous　phosphorus　removal　and　granulation　by　control　of　the　anaerobic-aerobic　operational　modes.　After　146　days,　the　average　particle　size　of　mature　granules　was　about　603　μm;　sludge　volume　index　(SVI)　was　about　30　mL·g-1;　COD　removal　rate　was　up　to　90%;　and　phosphorus　removal　rate　was　up　to　95%.　Analysis　of　the　fate　of　phosphorus　showed　that　phosphorus　accumulates　in　the　granular　sludge　besides　the　anaerobic　phosphorus　release　and　aerobic　phosphorus　uptake　in　the　granular　sludge　system.　The　phosphorus　removal　pathways　mainly　include　sludge　discharge　(suspended　solid　and　excess　sludge　discharge)　and　phosphorus　accumulation　in　the　sludge.　The　results　of　X-ray　diffraction　analysis　of　granular　sludge　from　the　end　of　the　anaerobic　phase　indicate　that　chemical　precipitation　is　an　important　mode　of　phosphorus　accumulation　in　sludge.　Inorganic　salts　formed　by　metal　ions　and　phosphate　accumulated　in　the　granular　sludge.

关键词：

Chemical precipitation; Granular sludge; Pathway of phosphorus; Phosphorus removal

作者机构：

[ 1 ] [Zhang, Y.]College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310014, China
[ 2 ] [Guo, Y.]College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310014, China
[ 3 ] [Li, J.]College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310014, China
[ 4 ] [Wei, S.]College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310014, China
[ 5 ] [Wang, Y.]State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
[ 6 ] [Ma, X.]College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310014, China
[ 7 ] [Peng, 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：

[Li, J.]College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310014, China

电子邮件地址：

tanweilijun@yahoo.com.cn

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