污泥浓度对次毫米过滤组件性能的影响  

Effect of Sludge Concentration on Performance of Sub-millifiltration Module

作　　者：王素兰[1] 段胜君 邢传宏[1] 李明明[1] 

机构地区：[1]郑州大学水利与环境学院,河南郑州450001

出　　处：《中国给水排水》2015年第7期83-86,共4页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2009ZX07210-001-001)

摘　　要：以获得MLSS浓度为2～4∥L的滤出液为目标，采用自制次毫米过滤组件（SMFM）实现高浓度污泥的分离，考察了污泥浓度（10、15、18g／L）对SMFM分离效果的影响。结果表明：对于孔径为0．329、0．498mm的SMFM，在高污泥浓度（〉10g／L）下，污泥浓度越高，其滤出液通量和浓度衰减越快，反之则衰减越慢。当初始通量为450L／（m^2·h）时，在一个周期内，孔径为1．15mm的SMFM运行20min的滤出液平均通量为370L／（m^2·h），均大于孔径为0．329、0．498mm的SMFM滤出液平均通量，故选择1．15mm为高浓度污泥过滤的最适孔径。An innovative sub-millifihration module （SMFM） was used to separate high-concentration sludge to obtain filtrate of 2 to 4 g/L. The effects of sludge concentrations of 10, 15 and 18 g/L on the performance of SMFM were investigated. The results demonstrated that for SMFM with pore size of 0. 329 mm and 0. 498 ram, at high sludge concentration of greater than 10 g/L, the higher the sludge concentration was, the faster the filtrate flux and concentration decline were, and in the contrary, the lower the sludge concentration was, the slower the filtrate flux and concentration decline were. At initial flux of 450 L/（m^2 · h）, in a cycle, the average flux of filtrate from SMFM with pore size of 1.15 mm and operation for 20 rain was 370 L/（m^2 · h）, which was higher than that of SMFM with pore size of 0. 329 mm and 0. 498 mm. Therefore, the optimal pore size was found to be 1.15 mm.

关 键 词：次毫米过滤组件 高污泥浓度 分离 孔径 

分 类 号：X703[环境科学与工程—环境工程]