摘要
采用生物接触氧化法对北京某水库的微污染水源水中消毒副产物前体物的去除进行了研究。结果表明 ,水源水和生物接触氧化柱 (简称生化柱 )出水中的消毒副产物前体物氯化后形成的消毒副产物三卤甲烷 ( THMs)以 CHCl3、CHCl2 Br和 CHBr2 Cl为主 ,其中 CHCl3含量最高 ,约占 THMs的 70 %。水温对 THMs前体物的去除有很大的影响 ,水温 15 .8℃时 ,生化柱对 THMs前体物的去除率为 65 .2 % ;当水温由 15 .8℃降至 12 .8℃时 ,THMs前体物的去除率由 65 .2 %降至 18.8%。2 0 0 2年 11月至 2 0 0 3年 1月间 ,生化柱对 UV2 54吸收值的平均去除率为 11%
The removal of disinfection by-product precursors in micropolluted source water of a reservoir in Beijing by bio-contact oxidation process has been studied. The result shows that the main contents of disinfection by-products of trihalomethanes (THMs) produced from the chlorination of disinfection by-product precursors in source water and the effluent of bio-contact oxidation column (bio-column) are CHCl\-3, CHCl_2Br and CHBr_2Cl, and CHCl_3 accounts for about 70% of THMs. Temperature has great effect on it. The removal efficiency of THMs precursors by bio-column is 65.2% at 15.8 ℃.It decreases from 65.2% to 18.8% when the temperature decreases from 15.8 ℃ to 12.8 ℃. The average removal efficiency of UV_(254) absorbance by bio-column from November to January is 11%.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2004年第5期321-322,325,共3页
Environmental Pollution & Control
基金
北京市教委资助项目 ( No.0 5 0 0 5 0 13 2 0 0 0 0 3 )
