低温低浊期原水预氧化和消毒副产物控制优化研究  

Optimization of Preoxidation and DBPs Control of Low Temperature and Low Turbidity Raw Water

作　　者：张怡然 方自毅 马文红 李晨 李建科 于益群 

机构地区：[1]天津泰达水业有限公司,天津300457 [2]天津泰达津联自来水有限公司,天津300457

出　　处：《中国给水排水》2017年第11期44-48,共5页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2012ZX07404002)

摘　　要：以低温低浊期引滦原水为处理对象,在天津某净水厂采用预氯化和预臭氧两种预氧化方式进行生产性优化试验。结果表明,预氯化和预臭氧去除浊度和有机物的效果无明显差别,产生的消毒副产物都远低于国标限值;但预臭氧对控制THMs的生成作用明显好于预氯化,前者比后者滤后水的THMs生成量低91.7%,对应的出厂水低58.5%;预氯化处理成本远低于预臭氧,后者约为前者的3~5倍。综合分析比较,引滦原水低温低浊期优选预氯化处理方式,预臭氧作为应急备用,可实现保证水质、优化运行和节能降耗的目标。A full-scale study was carried out to research processes of prechlorination and preozona- tion in treatment of low temperature and low turbidity raw water from the Luan River. The results showed that removal efficiencies of turbidity and organic matters were comparable between prechlorination and preozonation. Disinfection by-products （DBPs） generated by the two preoxidation processes were both far below the maximum contamination level （MCL） according to the Standards for Drinking Water Quality （ GB 5749 - 2006）. Preozonation had a more desirable control of THMs compared with prechlorination. Trihalomethanes （THMs） treated by preozonation, relative to prechlorination, was 91.7% lower in the filtered water and was 58.5% lower in effluent water. However, the cost of preozonation was 3 to 5 times higher than prechlorination. In conclusion, when temperature and turbidity is low, prechlorination is recommended for treatment of the Luan River raw water, while preozonation can be an effective alternative.

关 键 词：预氯化 预臭氧 消毒副产物 三卤甲烷 卤乙酸 

分 类 号：TU991.2[建筑科学—市政工程]