Treatment of submerged hollow fiber ultrafiltration membrane for reuse of sludge water  

作　　者：姚宏 单文广 孙明东 王晓爽 

机构地区：[1]School of Civil and Architecture Engineering,Beijing Jiaotong University

出　　处：《Journal of Harbin Institute of Technology(New Series)》2008年第2期183-187,共5页哈尔滨工业大学学报（英文版）

基　　金：the National High Technology Research and Development Program of China(Grant No.2004AA601020)

摘　　要：To lower the costs of wastewater treatment, the submerged hollow fiber ultrafiltration membrane was employed to reuse the filter backwash water and settling tank sludge water. Experimental study indicates that the submerged hollow fiber uhrafihration membrane can condense the concentration of sludge from 0. 1% -0. 3% to 2.5%. At 20 ℃, the system can operate continuously for 80 clays with daily online backwashing with chemical additions only once, and the membrane flux can be recovered up to 97% by using NaClO and NaOH as chemical additions. The results show that the membrane flux is mainly affected by temperature,and has a positive lin- ear relation to temperature with a slope of 0. 368. After treated by submerged hollow fiber uhrafihration membrane, the effluent can reach the National Standard for Drinking Water（ GB5749 -85 ） , especially for the sludge water from sedimentation tanks and the backwashing Water from filters in water supply plants.To lower the costs of wastewater treatment, the submerged hollow fiber ultrafiltration membrane was employed to reuse the filter backwash water and settling tank sludge water. Experimental study indicates that the submerged hollow fiber ultrafiltration membrane can condense the concentration of sludge from 0.1%-0.3% to 2.5%. At 20 ℃, the system can operate continuously for 80 days with daily online backwashing with chemical additions only once, and the membrane flux can be recovered up to 97% by using NaClO and NaOH as chemical additions. The results show that the membrane flux is mainly affected by temperature,and has a positive linear relation to temperature with a slope of 0.368. After treated by submerged hollow fiber ultrafiltration membrane,the effluent can reach the National Standard for Drinking Water(GB5749-85), especially for the sludge water from sedimentation tanks and the backwashing water from filters in water supply plants.

关 键 词：filter backwash water settling tank sludge water REUSE membrane technology 

分 类 号：X703[环境科学与工程—环境工程]