化工学报2011，Vol.62Issue(2)：469-476,8.
沉淀-超滤工艺膜反洗水的回收处理
Recycling treatment of membrane backwash water from sedimentation-ultrafiltration process
王海燕 1张伟林 2何凤华 2顾平1
作者信息
- 1. 天津大学环境科学与工程学院,天津,300072
- 2. 天津泰达自来水公司,天津,300457
- 折叠
摘要
Abstract
A low recovery rate was observed in the treatment of finished water from sedimentation tank with a UF membrane system, and recovery of membrane backwash water can improve productivity and reduce the cost of membrane treatment systems. In this study, two bench-scale coagulation microfiltration membrane systems were installed. The raw water of one membrane system was a blend of water from the pre-treated membrane backwash water and Luan River water in a 1 ∶ 9 ratio. Another membrane system was used to treat Luan River water. The aim of this study was to investigate effect of various pre-treatments on the finished water quality and membrane fouling rate. The results showed that the produced water quality from the mixed water system was improved with the addition of PAC in the pre-treatment of membrane backwash water, which was compared to the results obtained by coagulation. The removal rates of UV254 and CODMn were increased by 9% and 6. 3% , respectively. There was no difference in turbidity of the produced waters by the various pre-treatments. Moreover, attenuation rate of SF was reduced by 16.6% with adding PAC in the pre-treatment. And the produced water quality from Luan River water system and membrane fouling rate were similar to those in mixed water system when the PAC was added in the pre-treatment.关键词
饮用水/微滤/膜反洗水/混凝/粉末活性炭Key words
drinking water/microfiltration/membrane backwash water/coagulation/PAC分类
土木建筑引用本文复制引用
王海燕,张伟林,何凤华,顾平..沉淀-超滤工艺膜反洗水的回收处理[J].化工学报,2011,62(2):469-476,8.
