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）...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 in due to few organics removed. Therefore, organics with MW greater them brane foulingibly responsible for membrane fouling 30 kDa were the major factor of membrane fouling.展开更多
基金Sponsored by the Tianjin Municipal Science and Technology Commission(Grant No.05FZZDSH00500)
文摘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 in due to few organics removed. Therefore, organics with MW greater them brane foulingibly responsible for membrane fouling 30 kDa were the major factor of membrane fouling.
