西南交通大学学报（英文版）2008，Vol.16Issue(4)：398-403,6.
Characteristics of Trihalomethanes in Water Distribution System
Characteristics of Trihalomethanes in Water Distribution System
摘要
Abstract
To investigate the characteristics of disinfection by-products (DBPs) in an actual water distribution system using the raw water with high bromide ion concentration, the composition and concentration of trihalomethanes (THMs) formed by chlorination of the water in the presence of bromide ion were measured in a city water distribution system during one year. The results show that brominated THMs contributed a great part (83%89%) to the index for additive toxicity (ATI) and resulted in the ATI of most of the samples exceeding WHO guideline standard for total THMs (TTHMs), especially during the summer (rainy season). This indicates that the chlorination of water in the presence of bromide ion leaded to high ratios of brominated THMs to TTHMs. However, a visible increase in the concentration of THMs with increasing residence time in the distribution system was not observed. Additionally, based on alternatives analysis, packed tower aeration method is proposed to reduce THMs level of the finished water leaving the treatment plant.关键词
Water distribution system/Bromide ion/Disinfection by-products/Trihalomethanes/Index for additive toxicityKey words
Water distribution system/Bromide ion/Disinfection by-products/Trihalomethanes/Index for additive toxicity分类
交通工程引用本文复制引用
ZHAO Ming,ZHANG Jie,ZHANG Xin-yu,ZHENG Shuang-ying,LI Xin..Characteristics of Trihalomethanes in Water Distribution System[J].西南交通大学学报（英文版）,2008,16(4):398-403,6.基金项目
National High-Tech Research and Development Program of China (863 Program)(No. 2007AA06Z303) （863 Program）
