滤池反冲洗水回用对消毒副产物生成势的影响  

Effect of Filter Backwash Water Reuse on the Formation Potential of Disinfection By-Products

作　　者：蒙珂 李伟[1] 刘玉灿 段晋明[1] MENG Ke;LI Wei;LIU Yucan;DUAN Jinming(Shaanxi Key Laboratory of Environmental,Engineering,Key Laboratory of Northwest Water Resources,Environment and Ecology,MOE,Xi'an University of Architecture and Technology,Xi'an 710055,China;POW ERCHINA Northwest Engineering Corporation Limited,Xi'an 710065,China;School of Civil Engineering,Yantai University,Yantai 264005,China)

机构地区：[1]西安建筑科技大学,陕西省环境工程重点实验室,西北水资源与环境生态教育部重点实验室,陕西西安710055 [2]中国电建集团西北勘测设计研究院有限公司,陕西西安710065 [3]烟台大学土木工程学院,山东烟台264005

出　　处：《水处理技术》2020年第8期94-98,共5页Technology of Water Treatment

基　　金：国家自然科学基金(51308437);陕西省自然科学基金(2018JM5156);山东省自然科学基金项目(ZR2017BEE016)

摘　　要：对比研究了4种预氧化剂在给水厂滤池反冲洗水(FBWW)回用条件下,对消毒副产物生成势(DBPFP)的影响。结果表明,尽管FBWW回用可有效提高浊度去除效率,但由于部分颗粒状有机物在预氧化阶段被氧化为更加难以去除的溶解态有机物,致使溶解态有机物去除率降低,从而影响后续消毒过程中消毒副产物(DBPs)生成量.在FBWW回用体积比10%条件下,使用NaCIO对原水进行预氧化处理可大幅削减三卤甲烷生成势(THMFP,28.5%),使用KMnO4可显著降低卤代硝基甲烷生成势(HNMFP,43.6%),使用ClO2可有效减少卤乙腈(HANs.38.3%)和三氯丙酮的生成量(9.7%),使用O3也可以减小卤乙腈生成势(HANFP,21.2%)。以氯胺作为消毒剂时的DBPFP较NaClO作为消毒剂时的DBPFP含量大幅降低。The effect of four disinfectants on disinfection by-products formation potential (DBPFP) under the reuse of filter backwash water (FBWW) was comparative studied.The results showed that,although the FBWW could effectively improve the turbidity removal efficiency,some of the particulate organic matter was oxidized to dissolved organic matter in the pre-oxidation stage,resulting in a decrease in the organic matter removal rate.Thereby,the transformation affected the subsequent disinfection process and the production amount of DBPs.When FBWW reuse volume ratio was 10%,the preoxidation of raw water with NaClO could significantly reduce the formation potential of trihalomethanes (THMFP,28.5%),the use of KMnO4,ClO2,O3 could significantly reduce the formation potential of halonitromethanes (HNMFP,43.6%),haloacetonitriles (HANs,38.3%) and trichloroacetone (TCP,9.7%),(HANFP,21.2%),respectively.The DBPFP content of chloroammonia as the disinfectant was much lower than that of NaClO.

关 键 词：给水处理 预氧化 滤池反冲洗水 回用 消毒副产物生成势 

分 类 号：TU991.27[建筑科学—市政工程]