Characteristic of COD removal and sludge settleability in biological treatment of hypersaline wastewater - 文章详情页

作者：

Zhu, Gui-Bing (Zhu, Gui-Bing.) | Peng, Yong-Zhen (Peng, Yong-Zhen.) (学者：彭永臻) | Meng, Xiang-Sheng (Meng, Xiang-Sheng.) | Cui, You-Wei (Cui, You-Wei.) (学者：崔有为) | Sun, Ya-Nan (Sun, Ya-Nan.)

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EI Scopus

摘要：

In　order　to　investigate　the　feasibility　of　biological　treatment　of　hypersaline　wastewater　produced　from　toilet　flushing　with　seawater　at　low　temperature,　pilot-scale　studies　were　established　with　plug-flow　activated　sludge　process　at　low　temperature　(5-9°C)　based　on　bench-scale　experiments.　The　critical　salinity　concentration　of　30　g/L,　which　resulted　from　the　cooperation　results　of　the　non-halophilic　bacteria　and　the　halophilic　bacteria,　was　drawn　in　bench-scale　experiment.　Pilot-scale　studies　showed　that　high　COD　removal　efficiency,　higher　than　85%,　was　obtained　at　low　temperature　when　30　percent　seawater　[seawater/(seawater　+　sewage)]　was　introduced.　The　salinity　improved　the　settleability　of　activated　sludge,　and　average　SV　dropped　down　from　38%　to　22.5%　after　adding　seawater.　Sludge　bulking　could　be　forborne　effectively　because　filamentous　bacteria　couldn＇t　subsist　under　high　salinity　concentration.

关键词：

Microorganisms Bacteria Schematic diagrams Wastewater Activated sludge process Biological sewage treatment Chemical oxygen demand

作者机构：

[ 1 ] [Zhu, Gui-Bing]School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
[ 2 ] [Peng, Yong-Zhen]School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
[ 3 ] [Peng, Yong-Zhen]Key Laboratory of Beijing Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100022, China
[ 4 ] [Meng, Xiang-Sheng]School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China
[ 5 ] [Cui, You-Wei]Key Laboratory of Beijing Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100022, China
[ 6 ] [Sun, Ya-Nan]Key Laboratory of Beijing Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100022, China

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