THMs in Re-chlorinated Drinking Water
The concentration of trihalomethanes (THMs) could increase significantly in post-chlorinated water especially as water is boiled. This study aimed to investigate the levels of THMs and residual chlorine in the existing water distribution system, and to evaluate the possibility of additional THMs formation in distribution system for drinking water and rechlorinated drinking water in roof water tank. The investigation results showed that the level of residual chlorine in main pipelines generally lies between 0.5 and 1.2 mg l-1, decreasing to less than 0.4 mg l-1 or even close to zero (not detectable) at the end of pipelines. The level of total THMs in both main pipelines and the end of pipelines was found to lie between 11.4 and 16.3 μg l-1.However, a significant increase in THMs level was observed in post-chlorinated water, especially when water is heated.
Trihalomethanes (THMs) Free chlorine Postchlorination Water distribution system Main pipelines
Jing-mei Sun Su-yun Chang Yi Zheng Dong-gang Han Xin-hua Zhao
School of Environmental Science and Engineering,Tianjin University,Tianjin 300072,P.R.China
国际会议
北京
英文
1-4
2009-06-11（万方平台首次上网日期，不代表论文的发表时间）