原水有机物分子量分布及去除特性研究——基于北方某水厂实测数据  

Molecular Weight Distribution and Removal of Raw Water Organics Based on Measured Data of North China's Water Plant

作　　者：刘增军[1] 童祯恭[1] 侯煜堃 蔡琳 冯治华[1] 黄辰勰 

机构地区：[1]华东交通大学土木建筑学院,江西南昌330013 [2]郑州市自来水投资控股有限公司,河南郑州450000 [3]烟台市自来水有限公司,山东烟台264000

出　　处：《华东交通大学学报》2014年第4期123-129,共7页Journal of East China Jiaotong University

基　　金：国家"十二五"水体污染控制与治理专项项目(2012ZX07404004-005)

摘　　要：试验利用超滤膜法分析了黄河中下游原水总有机物(total organic carbon,TOC)中的溶解性有机物(dissolved organic car-bon,DOC)的分子量分布,以及原水经常规工艺处理后各工艺段出水DOC的MW分布。并以此分析该水厂对有机物的去除特性。结果表明:原水中DOC以小分子量有机物为主(<0.5 k Dalton的有机物占约占60%);从DOC和UV254来看,常规工艺对有机物的整体去除率不高,分别为20%和38%,其中有机物去除主要以混凝沉淀为主;水厂常规工艺对分子量<1 k Dalton有机物不能有效去除,甚至有所增加;比紫外吸收值表明,该水厂常规工艺不能有效降低消毒副产物生成风险,有必要增加深度处理工艺。This paper uses ultra-filtration method to analyze the distribution of molecular weight（ MW） of dissolved organic matter（DOC） in total organic matter（TOC） of the raw water in lower reaches of the Yellow River,and the distribution of DOC MW in raw water after the conventional treatment in each process of the water outlet.The experiment results are then applied to illustrate the removal characteristics of organics in the tested water plant. The study shows DOC of the raw water is mainly small molecular weight organic compounds（organic matter lighter than 0.5 k Dalton accounted for about 60%）. According to the results of DOC and UV254, the overall removal rate of the conventional process to the organic is not high, with respectively 20% and 38%, mainly by coagulation sedimentation; Conventional water treatment processes of the water plant can not effectively remove the organic materials with molecular lighter than 1 k Dalton, or even increases them; The value of SUVA indicates that the conventional process of the water plant can not reduce disinfection by-products formation effectively, and it is necessary to introduce advanced treatment technology.

关 键 词：常规工艺 有机物去除 分子量分布 

分 类 号：TU991.2[建筑科学—市政工程]