北江水源水混凝—沉淀—超滤工艺低通量中试研究  

A pilot study for a low flux coagulation-sedimentation-ultrafiltration process for Beijiang River raw water treatment

作　　者：杜星[1] 梁恒[2] 叶挺进 陈杰[4] 林显增 黄禹坤 罗旺兴 李圭白[1] 

机构地区：[1]哈尔滨工业大学城市水资源与水环境国家重点实验室,哈尔滨150090 [2]城市水资源开发利用(北方)国家工程研究中心,哈尔滨150090 [3]佛山市水业集团有限公司,佛山528000 [4]苏州立升膜分离科技有限公司,苏州215152

出　　处：《给水排水》2014年第6期9-13,共5页Water & Wastewater Engineering

基　　金：国家水体污染控制与治理科技重大专项(2011ZX07410-001-3);佛山市院市合作项目(2011BY100291)

摘　　要：通过中试研究混凝—沉淀—超滤工艺处理珠江流域北江水源水低通量运行情况,并研究了天然有机物对超滤膜污染的情况.试验结果表明：混凝—沉淀—超滤工艺出水浊度在0.08 NTU以下,膜滤后水2～10 μm的颗粒变化在22～31个/mL,整个工艺对浊度、UV254、CODMn的去除率分别为99.3％～99.6％、12.5％～52.0％、30％～65％;当超滤膜通量21 L/（m2·h）,反洗周期8h,反洗时间1 min时,跨膜压差每天增长0.32 kPa,基本实现超滤膜长期运行较小不可逆污染通量;蛋白类和胞外聚合物是超滤膜污染的主要有机污染因素,部分腐殖质对不可逆污染也有贡献.A pilot study was used to study coagulation-sedimentation-ultrafiltration process to treat the raw water from Beijiang River with low fluzc The impacts of natural organic matter on ul- trafiltration membrane pollution was studied. The results showed that the turbidity of effluent from process was below 0. 08 NTU and the range of the particle with the diameter from 2 to 10 μm varied between 22 to 31 unit/mL. The removal rates of the whole process on turbidity, UV254, and CODMn were 99.3%-99.6%, 12.5-52.0%, and 30%-65%, respectively. When the untrafil- tration membrane flux was 21 L/（m2 · h）,the back-washing cycle was 8 hours, the back-washing time was about 1 minute, and the membrane pressure difference increased about 0. 32 kPa, which meant that small irreversible pollution flux existed after a long operation time for the ultrafiltration unit. Protein and EPS blocking membrane pore were the major contributors for membrane irrevers- ible fouling while the humic substance was the minor.

关 键 词：超滤 低压膜 低通量 膜污染 

分 类 号：TU991.2[建筑科学—市政工程]