摘要
基于长江下游浅库型原水,对比常规与深度处理工艺运行效果,探索溶解性有机物(DOM)分子量分布的变化及其与消毒副产物生成的联系,明确常规与深度处理工艺的工艺适应性。研究结果表明,长江下游浅库型原水经以臭氧-生物活性炭(O 3-BAC)为核心的深度处理后,出水高锰酸盐指数(I Mn)、溶解性有机碳(DOC)、254 nm单位吸光度(UV 254)、UV 254与DOC比值(SUVA 254)、三卤甲烷生成潜能(THMFP)和卤乙酸生成潜能(HAAFP)分别降低了33%~79%、41%~67%、60%~81%、24%~58%、37%~70%和35%~64%,且出水小分子DOM(分子量≤1 ku)占比降至50%(质量分数)以下。常规处理工艺中,混凝、沉淀及砂滤是DOM的主要去除单元;而深度处理工艺中,DOM则主要靠O 3-BAC去除。针对长江下游浅库型原水,以O 3-BAC为核心的深度处理工艺具有更高的工艺适应性,并能实现对DOM的有效去除。
According to the raw water qualities of shallow water-supply reservoir located in lower Yangtze River,the performance of conventional treatment and advanced treatment equipped with ozone-biological activated carbon(O 3-BAC)was studied.Based on the variation of molecular weight of DOM in treatment process,removal of DOM and its connection with disinfection by-products were researched.Finally,the technology adaptability of conventional treatment and advanced treatment on drinking water were also evaluated and compared.Results showed that,I Mn,DOC,UV 254,SUVA 254,THMFP and HAAFP in the effluents of advanced treatment were decreased by 33%-79%,41%-67%,60%-81%,24%-58%,37%-70%and 35%-64%,respectively.The percentage of DOM with low molecular weight(molecular weight≤1 ku)in effluents could also be limited below 50%by advanced treatment.Coagulation,sedimentation and sand filter were the main processes of removal during the conventional treatment process.And the O 3-BAC was the core unit of advanced treatment.For raw water of shallow water-supply reservoir in the lower Yangtze River,technology adaptability of advanced treatment equipped with O 3-BAC was better than that of conventional treatment,and it could effectively remove the DOM in water.
作者
沈宏
吴南翔
姚春冀
陈洪斌
SHEN Hong;WU Nanxiang;YAO Chunji;CHEN Hongbin(Institute of Hygiene,Zhejiang Academy of Medical Sciences,Hangzhou Zhejiang 310007;State Key Labortory of Pollution Control and Resource Reuse,Tongji University,Shanghai 200092)
出处
《环境污染与防治》
CAS
CSCD
北大核心
2020年第5期579-585,共7页
Environmental Pollution & Control
基金
浙江省自然科学基金青年基金资助项目(No.LQ19H260004)
浙江省医药卫生科技计划项目(No.2019KY362)
“十三五”国家水体污染控制与治理科技重大专项(No.2017ZX07207004)。
