水温对慢滤池深度处理污水的性能影响.pdfVIP

4 11 环境 工程学 报 Vol. 4, No. 1 1 2 0 1 0 1 1 Chinese Journal of Environm entalEngineering Nov . 2 0 1 0 刘 杰 曹相生 孟雪征* (, 100124) , , : ( 23 25e )( 10 14e ), COD 1215% 2615% 2219% 51 8% , , : COD, , COD, X7031 1 A 1673-9108( 2010) 11-2437-04 Effects of tem perature on perform ances of a slow sand filter used for advanced wastewater treatm ent L iu Jie Cao X iangsheng Meng Xuezheng (Key Laboratory of Beijing forW ater Quality Science andW ater Environm ental Recovery Engineering, Co llege of Civ ilEng ineering, Beijing University ofT echnology, Beijing 100124, China) Abstract A lab scale slow sand filter was operated to polish effluent of a secondary wastewater treatment reactor in Beijing, China. Data of influent and effluent of the slow sand filterwere collected in summer and w in- ter. Based on the data, effects of temperature on perform ances of the slow sand filterwere investigated. A ll re- sults show that, removal rates of turbidity, COD, color and total bacterial counts decreased by 1215%, 2615% , 2219% and 518%, respectively when temperature dropped from 23 25e in summer to 10 14 e in w inter. Temperature varietieshave a bigger inhibition effect on COD removal than on turbidity removal. W ith low turbid-i ty influent of slow sand filter, the extent of inhibition effect on color removalmust be between that ofCOD remov- al and that of turbidity removal. The slow sand filtermaintained a satisfied and stable bacterial removal perform- ance in both seasons. K ey words slow sand filter; filtration; wastewater reuse; temperature , [ 1] , , ,