【作者】 杨帆； 王暄； 韩宏大； 何文杰； 顾平； 吕晓龙；

【Author】 YANG Fan~1,WANG Xuan~1,HAN Hongda~2,HE Wenjie~2, GU Ping~3,LU Xiaolong~1 (1.Key laboratory of hollow fiber membrane material and membrane process(ministry of education), Institute of Biology and Chemistry Engineering,Tianjin Polytechnic University; 2.Tianjin water bloc Ltd.;3.School of Environmental Science and Engineering,Tianjin University)

【机构】 中空纤维膜材料与膜过程教育部重点实验室,天津工业大学生物化工研究所； 天津市自来水集团有限公司； 天津大学环境科学与工程学院；

【摘要】 采用300 m~3/d中试规模的混凝-微滤膜组合系统处理饮用水,间歇抽吸的运行方式连续运行,连续监测了系统运行期间的处理效果及膜污染特性,主要考察排泥周期(1d,2d)和絮凝剂投加量对混凝-微滤中试装置处理效果及膜通量特性的影响.结果表明,排泥方式由每天排放一次改变为两天排放一次,膜比通量的变化不大;低温时期絮凝剂投加量从1.5 mg/L增加到4.6 mg/L,系统对于有机物的去除明显增强,而在高温时期并未出现规律性的变化.更多还原

【Abstract】 A pilot scale(300 m~3/d) experiment was carried out for drinking water treatment in coagulation—microfiltration combination system which was operated in the intermittent permeate operation mode.Treatment performance and membrane fouling characteristics of combination system were monitored continuously,and the influence of sludge discharge cycle and flocculant addition quantity on membrane flux and the permeate water quality were also discussed.Results indicated,the sludge discharge cycle was changed from one day to two days, and results showed the specific flux changed a little.During low temperature adding flocculant from 1.5 mg/L to 4.6 mg/L the system had good organics removal performance.But during high temperature there had no regular changes.更多还原