The chemical-aid phosphorus removal from municipal wastewater with limited carbon source - Details

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Abstract：

For　the　limited　carbon　source　wastewater,　biological　nitrogen　removal　process　with　chemical-aid　phosphorus　removal　can　make　the　effluent　meet　the　nitrogen　and　phosphorus　discharge　standards.　Attempting　to　search　an　effective　method　of　phosphorus　removal　in　the　wastewater　treatment,　we　take　ferric　chloride,　aluminum　sulfate　and　ferrous　sulfite　to　do　beaker　experiment.　The　following　conclusions　can　be　drawn　that　phosphorus　removal　efficiency　of　ferric　chloride　is　higher　than　that　of　aluminum　sulfate　and　ferrous　sulfite.　All　of　the　flocculants　can　bring　down　the　acidity　of　wastewater　and　ferrous　sulfite　can　reduce　the　DO　level　of　wastewater　with　the　same　dosing　condition.　Considering　efficiency　and　operation　cost,　ferrous　sulfite　is　adopted　as　flocculants.　When　the　dosing　of　ferrous　sulfite　is　35　mg/L,　the　ρ(TP)　removal　efficiency　can　reach　93%,　the　effluent　ρ(TP)　concentration　is　0.45　mg/L.　After　dosing　ferrous　sulfite,　the　active　sludge　concentration　of　aeration　tank　was　increased,　sludge　sedimentation　performance　was　strengthened,　and　SVI　decreased.

Keyword：

Chemicals removal (water treatment) Aluminum sulfate Chlorine compounds Biological water treatment Efficiency Sulfur compounds Carbon Aluminum chloride Chlorination Effluents Nitrogen removal Activated sludge process Wastewater treatment Flocculation

Author Community：

[ 1 ] [Li, Jun]The Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Ren, Jian]The Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Ren, Jian]Power and Water Resource Department, Capital Engineering and Research Incorporation Ltd, Beijing 100176, China
[ 4 ] [Yang, Xiao-Dong]Beijing BCEG Goldensources Environmental Protection Development Co. Ltd, Beijing 100101, China
[ 5 ] [Ma, Wen-Jin]The Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China
[ 6 ] [Ma, Wen-Jin]Gaobeidian Wastewater Treatment Plant of Beijing Municipal Drainage Corporation, Beijing 100124, China
[ 7 ] [He, Ji-Wen]Gaobeidian Wastewater Treatment Plant of Beijing Municipal Drainage Corporation, Beijing 100124, China
[ 8 ] [Li, Tong]Gaobeidian Wastewater Treatment Plant of Beijing Municipal Drainage Corporation, Beijing 100124, China