Surface-retained organic matter of Microcystis aeruginosa inhibiting coagulation with polyaluminum chloride in drinking water treatment

被引：116

作者：

Takaara, Tomoko ^{[1
,2
]}

Sano, Daisuke ^{[3
]}

Masago, Yoshifumi ^{[2
]}

Omura, Tatsuo ^{[2
]}

机构：

[1] Fukushima Natl Coll Technol, Dept Civil Engn, Fukushima 9708034, Japan

[2] Tohoku Univ, Grad Sch Engn, Dept Civil & Environm Engn, Aoba Ku, Sendai, Miyagi 9808579, Japan

[3] Hokkaido Univ, Grad Sch Engn, Div Built Environm, Kita Ku, Sapporo, Hokkaido 0608628, Japan

来源：

WATER RESEARCH | 2010年 / 44卷 / 13期

基金：

日本学术振兴会;

关键词：

Microcystis aeruginosa; Surface-retained organic matter (SOM); Coagulation inhibition; Polyaluminum chloride (PACl); Lipopolysaccharide (LPS); REMOVAL; ALGAE; SPECIATION; ALUMINUM;

D O I：

10.1016/j.watres.2010.04.030

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Algogenic organic matter produced by the excess growth of cyanobacteria in semi-closed water areas causes coagulation inhibition in drinking water production. In this study, hydrophilic substances of Microcystis aeruginosa, which were mainly composed of lipopolysaccharide (LPS) and RNA, were prepared, and the involvement of these cyanobacterial hydrophilic substances in coagulation inhibition was investigated. As a result, it was found that the negatively charged hydrophilic substances with a molecular weight higher than 10 kDa have a significant role in coagulation inhibition. Further fractionation of cyanobacterial hydrophilic substances revealed that surface-retained organic matter (SOM), including LPS, could exhibit a potent inhibitory effect on the coagulation using polyaluminum chloride (PACl), presumably because of the direct interaction of hydrophilic SOM with cations originated from PACl, which could impede the hydrolysis of the coagulant. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：3781 / 3786

页数：6

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