Effects of polydiallyldimethyl ammonium chloride coagulant on formation of chlorinated by products in drinking water

被引：37

作者：

Chang, EE ^{[1
]}

Chiang, PC

Chao, SH

Liang, CH

机构：

[1] Taipei Med Coll, Dept Analyt Chem, Taipei, Taiwan

[2] Natl Taiwan Univ, Grad Inst Environm Engn, Taipei 10764, Taiwan

来源：

CHEMOSPHERE | 1999年 / 39卷 / 08期

关键词：

polyelectrolyte; polydiallyldimethyl ammonium chloride (p-DADMAC); cationic polymer; trihalomethane (THM); TOC; chlorine demand;

D O I：

10.1016/S0045-6535(99)00036-3

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The objectives of this research work was to evaluate the reduction of THM precursors by cationic p-DADMAC and determine the correlations between the chlorine demand and trihalomethane formation in the presence of electrolyte solutions and ambient light. The chlorine demand was found to be significantly reduced provided that the H2SO4 electrolyte was fed to the sample solutions. The amount of CHCl3 formation was also decreased when the Na2SO4 electrolyte was introduced in spite of the levels of light intensity. The p-DADMAC can not only effectively remove the turbidity but also reduce the formation of CHCl3. The optimum dosage of p-DADMAC for reducing the turbidity, TOC and CHCl3 in the humic acid and source water samples was determined and depended upon the nature of organics. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：1333 / 1346

页数：14

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