不同化学预氧化/混凝沉淀工艺对DBPsFP的去除规律  

Effect of chemical pre-oxidation/coagulation sedimentation process on formation potential of disinfectant by-products

作　　者：时真男[1,2,3] 成瑞雪 唐锋兵 张义竞[1,2,3] 李思雨 李思敏 SHI Zhen-nan;CHENG Rui-xue;TANG Feng-bing;ZHANG Yi-jing;LI Si-yu;LI Si-min(Hebei Technology Innovation Center of Water Pollution Control and Water Ecological Remediation,Handan 056038,Hebei Province,China;Handan Key Laboratory of Water Utilization Technology,Handan 056038,Hebei Province,China;College of Energy and Environmental Engineering,Hebei University of Engineering,Handan 056038,Hebei Province,China)

机构地区：[1]河北工程大学河北省水污染控制与水生态修复技术创新中心,河北邯郸056038 [2]河北工程大学邯郸市水利用技术重点实验室,河北邯郸056038 [3]河北工程大学能源与环境工程学院,河北邯郸056038

出　　处：《化学工程》2021年第11期6-10,共5页Chemical Engineering(China)

摘　　要：研究了化学预氧化联合混凝沉淀工艺对消毒副产物生成势(DBPsFP)的去除,以降低水处理工艺末端消毒副产物浓度。本试验选用南水北调(邯郸段)和滏阳河水2种水质差异较大的地表水水源水为试验用水,研究化学预氧化/混凝沉淀工艺对三卤甲烷生成势(THMFP)和卤乙酸生成势(HAAFP)的去除规律,选用KMnO_(2)、H_(2)O_(2)和NaClO这3种预氧化剂与混凝沉淀工艺联用进行试验。结果表明,2种水源水中DBPsFP去除规律具有共性和差异性,综合考虑常规指标和DBPsFP的去除规律,优选H_(2)O_(2)为化学预氧化剂,最佳投加量为1.5 mg/L,南水北调(邯郸段)水源水中DBPsFP的去除率为49.2%;滏阳河水水源水中DBPsFP去除率为39.9%。化学预氧化可降解或去除水体中的大分子有机物,同时强化混凝沉淀,提高DBPsFP的去除率。The removal of the formation potential of disinfection by-products(DBPsFP)was studied by chemical preoxidation combined with coagulation sedimentation process,the concentration of disinfection by-products at the end of water treatment process was reduced.Two kinds of surface water sources with different water quality,namely,South to North Water Diversion Project(Handan section)and Fuyang River,were used to study the removal of THMFP and HAAFP by chemical preoxidation/coagulation sedimentation process.Three kinds of preoxidants,such as KMnO_(2),H_(2)O_(2)and NaClO were selected to combine with coagulation sedimentation process.The results show that the removal rules of DBPsFP in the two kinds of source water have similarities and differences.Comprehensivly considering the conventional indexes and the removal rules of DBPsFP,H_(2)O_(2)is selected as the chemical preoxidant,the best dosage is 1.5 mg/L,and the removal rate of DBPsFP in the source water of South to North Water Diversion Project(Handan section)is 49.2%.The removal rate of DBPsFP in Fuyang River source water is 39.9%.Chemical preoxidation can degrade or remove macromolecular organics in water,strengthen coagulation and sedimentation,and improve the removal rate of DBPsFP.

关 键 词：地表水 化学预氧化 消毒副产物 三卤甲烷生成势 卤乙酸生成势 

分 类 号：X131.2[环境科学与工程—环境科学]