Experimental study of phosphorus removal technique by coagulation in drinking water treatment - Details

Author：

Yang, Yan-Ling (Yang, Yan-Ling.) (Scholars：杨艳玲) | Li, Xing (Li, Xing.) (Scholars：李星) | Feng, Qun-Ying (Feng, Qun-Ying.) | Nie, Xue-Feng (Nie, Xue-Feng.) | Li, Gui-Bai (Li, Gui-Bai.)

Indexed by：

EI Scopus PKU CSCD

Abstract：

The　relations　between　phosphorus　removal　and　turbidity　removal　by　coagulation　are　reviewed　by　laboratory　experiments.　The　effects　of　coagulant　types　and　pH　value　to　removal　performance　of　phosphorus　with　different　forms　are　investigated.　The　coagulation　aid　effects　of　potassium　permanganate　composite　(PPC)　and　polyacrylamide　(PAM)　on　improving　phosphorus　removal　are　also　studied.　The　results　show　that　phosphorus　removal　efficiency　is　evidently　improved　by　enhanced　coagulation.　The　phosphorus　removal　efficiency　of　poly　ferric　chloride　(PFC)　is　clearly　better　than　poly　aluminum　chloride　(PAC)　and　poly　aluminum-ferric　chloride　(PAFC).　The　optimum　pH　values　for　PFC,　PAC　and　PAFC　are　7.5,　6.5　and　6.0,　respectively.　It　is　more　difficult　to　remove　dissolved　phosphorus　generally,　but　the　dissolved　phosphorus　can　be　effectively　removed　when　coagulant　dosage　is　increased　to　a　certain　level.　PPC　and　PAM　show　a　certain　effects　of　phosphorus　removal　and　coagulation　aid,　but　the　dosage　and　dosing　time　of　PAM　must　be　controlled　correctly.

Keyword：

Polyacrylates Water quality Chlorine containing polymers Phosphorus compounds Potassium compounds Aluminum compounds Water treatment Turbidity Potable water Coagulation

Author Community：

[ 1 ] [Yang, Yan-Ling]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100022, China
[ 2 ] [Li, Xing]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100022, China
[ 3 ] [Feng, Qun-Ying]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100022, China
[ 4 ] [Nie, Xue-Feng]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100022, China
[ 5 ] [Li, Gui-Bai]School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin 150090, China