物理清洗方式与膜箱浊度对浸没式超滤膜的影响研究  

EFFECT OF PHYSICAL CLEANING METHOD AND TURBIDITY OF THE MEMBRANE TANK ON SUBMERGED ULTRAFILTRATION MEMBRANE

作　　者：白海浪[1] 朱圆圆[1] 王攀[1] 杨波[1] 

机构地区：[1]杭州水处理技术研究开发中心有限公司,浙江杭州310012

出　　处：《水处理技术》2015年第3期108-111,共4页Technology of Water Treatment

基　　金：国家科技支撑计划(2014BAB07B01;2012BAB17B01)

摘　　要：采用浸没式超滤处理舟山海域的高浊度海水,研究空曝气作用、气水联合反冲洗过程的气量与水量、膜箱浊度等在膜清洗过程的影响作用。结果表明,一定时间范围内的空曝气对膜丝表面的滤饼层有较好的去除效果,气水联合反洗过程中,反洗水量与气量保持在合理的范围就可保持良好的清洗效果,曝气体积流量3 m3/h(标准状态),反洗水量为产水量的80%即为经济合理值,单独的上/下端进水反洗或先上/下端进水+下/上端进水的差异不大,膜箱浊度对膜污染有较大的影响作用,浸没式膜箱中浊度应保持在1 000 NTU以内。Effect of air aeration, air and permeate flow in the backwashing with the combination of gas and permeate and turbidity of the membrane tank on the membrane cleaning process was investigated by adopting submerged ultrafiltration membrane to treat high-turbidity seawater taken from Zhoushan sea area. The results indicated that air aeration showed good removal efficiency on the cake layer grew on membrane surface. When the backwashing air flow and permeate flow kept in a reasonable range during the process of backwashing with the combination of gas and permeate, the cleaning effect would be ideal, and economical and reasonable values were that aeration volume flow was 3 m3/h and 80% of water yield was backwashing water. There was no obvious difference between inflowing for backwashing from the top or down only and inflowing from first top then down or first down then top, but turbidity of the membrane tank had a significant influence on the membrane fouling, therefore the turbidity should be kept within 1 000 NTU.

关 键 词：浸没式超滤 空曝气 汽水联合反冲洗 膜箱浊度 

分 类 号：TQ028.8[化学工程]