水处理各工艺单元对有机物及消毒副产物前体物的去除效果  

Effect of Water Treatment Processes on Removal of Organic Substances and Precursors of Disinfection Byproducts(DBPs)

作　　者：刘雪飞[1] 高乃云[1] 关小红[1] 周恭明[1] 

机构地区：[1]同济大学污染控制与资源化研究国家重点实验室,上海200092

出　　处：《净水技术》2017年第3期27-31,37,共6页Water Purification Technology

基　　金：国家科技重大专项(2012ZX07403-001;2012ZX07403-002);国家自然科学基金资助项目(51178321)

摘　　要：通过搭建具有新型工艺"臭氧预处理+常规工艺+臭氧生物活性炭处理(臭氧-BAC)"的中试装置,考察了其对北太湖原水中有机物和消毒副产物前体物的去除效果。结果表明:整套工艺能够有效降低各类有机物浓度,对COD_(Mn)、DOC、UV_(254)和三卤甲烷生成潜能(THMFP)的去除率分别达到63.8%、42.1%、72.3%以及33.4%,其中COD_(Mn)的出水浓度为1.39 mg/L,出水中THMFP的浓度为316.1μg/L;对有机物和三卤甲烷(THMs)前体物去除效果最显著的是混凝沉淀阶段,其中对UV_(254)的去除效果最明显,去除率达到59.1%,UV_(254)能够间接表征水体中的THMFP含量;水中的余氯能够持续与有机物反应生成消毒副产物,因此三卤甲烷初始值(THM_0)与水中余氯含量的变化具有较大的相关性;臭氧-BAC阶段THMFP浓度升高了13.0%。The removal efficiency of organics and disinfection byproduct precursors （ DBPs） in raw water of north Taihu Lake was studied by setting up a pilot facility with processes of a ozone pretreatment ＋ conventional process ＋ ozone biological activated carbon treatment （ ozone-BAC） ”. The results showed that the whole process could reduce all kinds of organics effectively, and the removal efficiency of C0DMn, DOC, UV254 and trihalomethanes formation potential （THMFP） were 63. 8% , 42. 1% , 72. 3% and 33.4% , respectively. The concentration of C0DMn and THMFP in the effluent was 1.39 mg/L and 316. 1 j jig/L, respectively. The removal of organics and trihalomethanes （THMs） precursors was most obvious in the coagulation and sedimentation stage, in which the removal effect of UV254 was the most obvious, and its removal rate reached 59. 1%. UV254 could be used to characterize the amount of THMFP in water indirectly. The residual chlorine in water can react with organics continuously to produce DBPs, thus the initial value of trihalomethanes （ THM0） has a great correlation with the residual chlorine content in water. The concentration of THMFP increases by 13. 0% in the ozone-BAC treatment stage.

关 键 词：中试 有机物 消毒副产物 THM前体物 去除率 三卤甲烷生成潜能 

分 类 号：TU991[建筑科学—市政工程]