Characteristics of organic precursors and their relationship with disinfection by-products

被引：139

作者：

Chang, EE ^{[1
]}

Chiang, PC

Ko, YW

Lan, WH

机构：

[1] Taipei Med Univ, Dept Biochem, Taipei, Taiwan

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

[3] Da Yeh Univ, Dept Environm Engn, Taipei, Taiwan

来源：

CHEMOSPHERE | 2001年 / 44卷 / 05期

关键词：

disinfection by-product; hydrophilic; hydrophobic; molecular weight; precursor;

D O I：

10.1016/S0045-6535(00)00499-9

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The molecular weight distribution and chemical composition of precursors and their relationship with disinfection by-products (DBPs) were investigated. Most of the organic matter responsible for the major DBP precursors in the Pan-Hsin water are small compounds with a molecular weight less than 1 kDa. The hydrophobic acids display the greatest ability to produce DBP. Therefore, effective removal of small molecules or hydrophobic acidic organics prior to disinfection process will significantly reduce the DBP concentration in the finished water. Although the coagulation process is effective in removing large organic precursors and the removal efficiencies of CHCl3 formation potential and organic carbon increase proportionally to the molecular weight of the precursors, the conventional treatment methods have limited efficiency in eliminating small precursors, which have high DBP formation potential. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：1231 / 1236

页数：6

共 7 条

[1]

[Anonymous], 1995, Standard methods for examination of water and waste water, V19th

[2]

CHANG CN, 1999, P 6 WAT SUPPL C TAIW, P171

[3]

COLLINS MR, 1986, ENVIRON SCI TECHNOL, V20, P1024

[4] The effect of organic characteristics land bromide on disinfection by-products formation by chlorination [J].

Huang, WJ ;

Yeh, HH .

JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-ENVIRONMENTAL SCIENCE AND ENGINEERING & TOXIC AND HAZARDOUS SUBSTANCE CONTROL, 1997, 32 (08) :2311-2336

[5]

LOU JC, 1991, J CHINESE I ENV ENG, V1, P57

[6]

Owen D.M., 1993, CHARACTERIZATION NAT

[7]

VEENSTRA JN, 1980, J AM WATER WORKS ASS, V72, P583

← 1 →