硅藻土错流动态膜工艺处理淮河原水的运行特性  

Operating characteristics of cross-flow DE-dynamic membrane process for Huaihe raw water treatment

作　　者：许光红[1] 孙雯[1] 余振勋[1] 董秉直[2] 曹达文[3] 

机构地区：[1]同济大学环境科学与工程学院,上海200092 [2]同济大学同济大学长江水环境教育部重点实验室,上海200092 [3]同济大学城市污染控制国家工程研究中心,上海200092

出　　处：《膜科学与技术》2012年第4期92-97,共6页Membrane Science and Technology

基　　金：水体污染控制与治理科技重大专项(2009ZX07424-006);国家自然科学基金资助项目(51078148);淮南第一水厂的大力支持

摘　　要：采用硅藻土错流动态膜过程直接处理淮河原水,考察商品硅藻土在不同投加量、不同附加剂配合条件下动态膜的成膜效果、出水浊度和膜通量变化.研究结果表明,采用商品硅藻土和聚合氯化铝附加剂动态膜成膜较好;继续在动态膜过滤过程中不断加入0.25mg/L聚合氯化铝,出水浊度可以稳定在0.25NTU或以下.错流可以适当延缓硅藻土动态膜通量衰减.This paper discusses the cross-flow diatomaceous earth pre-coated dynamic membrane process m treating the Huaihe raw water directly. It attempts to evaluate the quality of dynamic membrane formation by testing the turbidity of the filtrate and the variation of flux under the condition of different dosing quantities of diatomite and different kinds of additive. The results show that the use of diatomite, combined with PAC as additive to the pre-coat, produces a dynamic membrane of high-quality. Continued addition of 0.25 mg/L PAC during the whole process can low membrane flux drop is maintained. reduce the filtrate turbidity to 0. 25NTU; additionally, a

关 键 词：硅藻土 动态膜 错流 聚合氯化铝附加剂 

分 类 号：X703[环境科学与工程—环境工程]