黄浦江原水NDMA前体物的组成规律及其在常规净水工艺中的削减特性  

Composition of NDMA precursors in Huangpu River and its removal characteristics in conventional water treatment processes

作　　者：林琳[1] 徐斌[1] 覃操[1] 叶涛[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长江水环境教育部重点实验室,上海200092

出　　处：《给水排水》2013年第2期61-65,共5页Water & Wastewater Engineering

基　　金：国家自然科学基金资助项目(51078280);上海市青年科技启明星计划项目(11QA1407000)

摘　　要：研究了黄浦江上游水源的二甲基亚硝胺(NDMA)前体物的组成规律,并以某水厂常规净水工艺为研究对象,考察了其在水厂工艺单元中的削减特征。研究发现:黄浦江水中NDMA前体物主要以相对分子质量小于1 000和亲水性组分为主,其组成规律基本与溶解性有机氮(DON)一致,有效控制水中DON的含量是控制NDMA产生的重要方法;常规处理工艺中沉淀、过滤和消毒等整体工艺可削减NDMA生成潜能,但总体对生成潜能的削减不足原水NDMA生成潜能的50%,无法有效去除水中NDMA前体物,且对其他亚硝胺类NDEA、NPIP和NDBA等的前体物去除效果均小于52%。This paper investigated the composition of dimethylnitrosamine （NDMA） precursors in the upper reaches of Huangpu River. In addition, their declining characteristics in water treatment process were also studied by investigating the conventional water treatment process in a water treatment plant. The results showed that the NDMA precursors in Huangpu River mainly existed in molecular with 〈 1 000 and hydrophilic component, which was similar to the distribution of dis solved organic nitrogen （DON）. Therefore, effective control of the DON in the water is an important method to control NDMA. The conventional process of sedimentation, filtration and disinfection processes could reduce NDMA production potential in waterworks. However, the capability to reduce NDMA production potential in whole process was less than 50% of the capability to produce NDMA in raw water, which indicated conventional process could not remove the NDMA precursors in raw water. Furthermore, the removal efficiency on other precursors, such as NDEA, NPIP and NDBA in conventional process was less than 52% as well.

关 键 词：消毒副产物 二甲基亚硝胺(NDMA) 氯胺消毒 生成潜能 净水工艺 

分 类 号：TU991.2[建筑科学—市政工程]