| Author Name | Affiliation | | KANG Hua | School of Municipal and Environmental Engineering,Harbin Institute of Technology,Harbin 150090,China | | HE Wen-jie | School of Municipal and Environmental Engineering,Harbin Institute of Technology,Harbin 150090,China
Tianjin WaterWorks Group Company Ltd,Tianjin 300040,China | | LIU Xiu-hong | Beijing Drainage Group Co.Ltd,Beijing 100044,China | | WANG Dong | Changchun Water Group Co.Ltd,Changchun 130021,China |
|
| Abstract: |
| The aim of this study was to obtain a better understanding of the range of organic molecular weight(MW)causing membrane fouling through the comparison between direct UF and in-line coagulation(without settling)/UF process.The experimental results indicated that,when raw water with organics was treated and the MW of more than half of the organics was less than 1 kDa,membrane fouling was rather serious by only UF and coagulation could improve the fouling for the treatment of raw water.Besides,coagulation/UF could remove organics in each region,and organics with MW greater than 30 kDa were the most possible matters causing membrane fouling,while organics with MW less than 1 kDa were impossibly responsible for membrane fouling due to few organics removed.Therefore,organics with MW greater than 30 kDa were the major factor of membrane fouling. |
| Key words: fouling molecular weight distribution organics Ultrafiltration |
| DOI：10.11916/j.issn.1005-9113.2010.06.015 |
| Clc Number:TU991.2 |
| Fund: |
