水处理工艺对消毒副产物生成及其前体物控制  

DBPs Formation and Precursors Control by Water Treatment Processes

作　　者：任峰 REN Feng(Security Center for Urban Water Supply of Jiangsu Province,Nanjing 210036,China)

机构地区：[1]江苏省城镇供水安全保障中心,江苏南京210036

出　　处：《净水技术》2020年第12期87-93,共7页Water Purification Technology

基　　金：国家科技重大专项:江苏太湖水源饮用水安全保障技术集成与综合示范(2012ZX07403-001)。

摘　　要：针对某水厂高有机物和高藻含量的微污染水源水质,在饮用水处理工艺流程经大规模改造以后的调试运转时期,考察了各工艺单元出水中的有机物替代参数CODMn、DOC、UV254的变化规律、去除效果及其机制。研究结果表明,常规处理对DBPs前体物(有机物替代参数UV254、DOC和CODMn)的平均去除率为17.5%、26.3%和36.3%,凸显出增加预处理和常规处理的必要性。同时,连续12个月考察太湖水源经某水厂预处理、常规处理和深度处理,以及出厂水中含碳和含氮消毒副产物生成浓度的变化规律。分别取各处理单元出水,进行了实验室规模的含碳消毒副产物三卤甲烷和卤乙酸生成潜能试验,并从理论上进行了机理分析,为饮用水中含碳消毒副产物的控制提供了理论和技术支撑。In view of the micro-polluted water quality of a water plant with high organic matter and high algae content,during commissioning period after large-scale transformation of drinking water treatment process,the changes in organic matter substitution parameters CODMn,DOC,and UV254 in the effluent of each process unit were investigated.Regularity and removal effect and its mechanism.Research results showed that the average removal rate of DBPs precursors(organic substitution parameters UV254,DOC and CODMn)by conventional treatment was 17.5%,26.3% and 36.3%,highlighting the necessity of increasing pretreatment and advanced treatment.At the same time,for 12 consecutive months,the water source of Taihu Lake had been pre-treated,conventionally treated and advanced in a water plant,and the concentration of carbon and nitrogen-containing disinfection by-products in the factory water had been changed.Subsequently,effluent from each treatment unit was taken to conduct laboratory-scale experimental research on generation potential of carbon-containing disinfection by-products trihalomethane and haloacetic acid,and theoretical analysis was carried out.It provided theoretical and technical support for the control of carbon-containing disinfection by-products in drinking water.

关 键 词：有机物 三卤甲烷 卤乙酸 消毒副产物 前体物 

分 类 号：TU991.2[建筑科学—市政工程]