热致相分离法制备PVDF超滤膜处理饮用水中试  

PREPARATION OF PVDF ULTRAFILTRATION MEMBRANE BY THERMALLY-INDUCED PHASE SEPARATION METHOD FOR DRINKING WATER TREATMENT

作　　者：张彬[1] 甄宗晴 郑晓红 赵长通 奚韶锋 

机构地区：[1]泰安市自来水公司,山东泰安271000 [2]苏州膜华材料科技有限公司,江苏苏州215200

出　　处：《水处理技术》2014年第6期107-109,共3页Technology of Water Treatment

基　　金：国家水体污染控制与治理科技重大专项(2011ZX07410-002)

摘　　要：采用热致相分离法（热法）制备的PVDF超滤膜在自来水厂进行了浸没式超滤工艺的水处理中试,系统设计产水量为100 m3/d,膜的运行条件为：曝气频率16次/d,曝气时间60 s/次,反洗频率16次/d,反洗时间90 s/次,维护性化学清洗周期为14 d。结果表明,当水温为10-20℃,平均通量为30 L/（m^2·h）时,跨膜压差为12-17 kPa。水回收率在97%以上,电耗为0.08kWh/t。所使用的PVDF超滤膜,具有强度高、通量大、截留性能好、抗污染能力强等优点,适合在市政饮用水深度处理中应用。The PVDF ultrafiltration membrane prepared by thermally-induced phase separation method was used for water treatment in tap water plant. The design water yield is 100 m^3/d, and the running conditions of membrane are as follows： aeration frequency is 16 times/d, aeration time is 60 s/time, backwashing frequency is 16 times/d, backwashing time is 90 s/time, and maintenance chemical cleaning cycle is 14 d. The results show that when the water temperature is 10-20 ℃ and the average flux is 30 L/（m^2·h）, transmembrane pressure difference is 12- 17 kPa, water recovery is above 97%, and energy consumption is 0.08 kWh/t. The PVDF ultrafiltration membrane has many advantages, such as high strength, flux, separation performance and antifouling ability, which is suitable for municipal drinking water advanced treatment.

关 键 词：热致相分离法 聚偏氟乙烯中空纤维膜 浸没式超滤 膜通量 跨膜压差 

分 类 号：TQ028.8[化学工程]