O_3/H_2O_2-BAC深度处理工艺对三氯乙醛生成潜能的去除  

Removal of chloral hydrate formation potential by O_3/H_2O_2-BAC advanced treatment process

作　　者：蔡广强[1,2] 刘伟 张金松 黄河洵[1] 卢小艳 刘丽君[1] 刘嘉祺[1] 刘波[1] Cai Guangqiang;Liu Wei;Zhang Jinsong;Huang Hexun;Lu Xiaoyan;Liu Lijun;Liu Jiaqi;Liu Bo(Shenzhen Water Affairs（Group）Co.,Ltd.,Shenzhen 518031,China;Key Laboratory of Water Resource Utilization and Environmental Pollution Control in Shenzhen,Civil and Environmental Engineering School,Harbin Institute of Technology（Shenzhen）,Shenzhen 518055,China;Shenzhen Shen Shui Bao An Water Affairs Group Co.,Ltd.,Shenzhen 518133,China)

机构地区：[1]深圳市水务(集团)有限公司,深圳518031 [2]哈尔滨工业大学(深圳)土木与环境工程学院深圳市水资源利用与环境污染控制重点实验室,深圳518055 [3]深圳市深水宝安水务集团有限公司,深圳518133

出　　处：《给水排水》2018年第8期13-18,共6页Water & Wastewater Engineering

基　　金：国家水体污染控制与治理科技重大专项(2015ZX07406-004)

摘　　要：为提升O_3-BAC深度处理工艺水厂控制三氯乙醛(CH)超标风险能力,以我国南方某水厂常规工艺砂滤池出水和CH典型前体物水溶液为研究对象,分析H_2O_2投加量对O_3/H_2O_2-BAC深度处理工艺削减三氯乙醛生成潜能(CHFP)效能及有机物组成的影响,并确定最佳的工艺参数及CHFP削减机制。结果表明,O_3/H_2O_2-BAC深度处理工艺去除CHFP的最佳工艺参数:H_2O_2/O_3摩尔比为0.5(O_3投加量为1.5mg/L),此条件下,BAC工艺单元对砂滤出水、腐殖酸、蛋白质及天冬氨酸水溶液CHFP的去除率分别为79.10%、67.12%、70.36%和77.82%,其中,与单独投加1.5mg/L O_3相比,对砂滤出水CHFP的削减效能提高24.91个百分点。此外,H_2O_2的投加,通过增加O_3氧化后水体亲水性有机物浓度,进而强化BAC工艺单元对砂滤出水及CH典型前体物水溶液的CHFP去除。To improve water plant＇s ability to control the risk of chloral hydrate （CH） excee- ding the standard, the effects of H2O2 dosage on the removal efficiency of chloral hydrate formation potential （CHFP） and organic matter composition in the O3/H2O2- BAC advanced treatment process were analysed, and the optimal process parameters and CHFP removal mechanism were determined, based on sand filter effluent of the conventional process of a water plant in southern China and aqueous solutions of typical CH precursors. The results showed that the optimal process parameters of CHFP removal by the 03/H2O2 -BAC advanced treatment process were H2 02/03 mo- lar ratio of 0. 5 at 03 dosage of 1.5 mg/L. Under these conditions, the removal efficiencies of CHFP from sand filtration effluent and aqueous solutions of humic acid, protein and aspartic acid were 79.10G, 67.12G, 70. 36%o and 77.82%, respectively. In addition, the removal efficiency of CHFP in sand filtration effluent was increased by 24.91%, as compared with 1.5 mg/L 03 alone. Moreover, the concentration of hydrophilic organic matters in the water after O3 oxidation was improved because of H2O2 addition, which in turn enhanced CHFP removal from sand filter effluent and aqueous solutions of typical CH precursors by the BAC process unit.

关 键 词：O3/H2O2-BAC深度处理工艺 消毒副产物 三氯乙醛生成潜能 去除 

分 类 号：TU991.2[建筑科学—市政工程]