摘要
比较分析了对城市污水再生水采用液氯和二氧化氯消毒前后消毒副产物的变化。结果表明:城市污水再生水本身含有少量的氯代有机物,经液氯消毒后二氯甲烷、三氯甲烷含量大幅增加,为进水的3～4倍,同时产生了新的消毒副产物二氯一溴甲烷;经二氧化氯消毒后未出现新的消毒副产物,且原有副产物浓度基本不变。因此,再生水使用二氧化氯消毒具有明显优势。
The variations of disinfection by-products in reclaimed municipal wastewater disinfected by liquid chlorine and chlorine dioxide were compared and analyzed. The results indicated that there were some chlorinated organic compounds in reclaimed municipal wastewater itself, the concentrations of CHECl2 and CHCl3 increased 3 to 4 times of the influent after disinfection by liquid chlorine, new byproduct CHCl2 Br was regenerated simultaneously. Chlorine dioxide disinfection didn＇ t introduce new byproducts, and the concentration of original by-products almost didn＇ t alter. Therefore chlorine dioxide had obvious advantage in the disinfection of reclaimed water.
出处
《供水技术》
2010年第4期20-22,共3页
Water Technology
关键词
城市污水
再生水
消毒副产物
液氯
二氧化氯
municipal wastewater
reclaimed water
disinfection by-products
liquid chlorine
chlorine dioxide
