化工学报2018，Vol.69Issue(6)：2697-2707,11.DOI:10.11949/j.issn.0438-1157.20171437
饮用水处理工艺中臭氧剂量控制消毒副产物生成势研究
Study of ozone dosage via disinfection by-product formation potential controlling in drinking water treatment
摘要
Abstract
This study is based on a demonstration project of pre-ozonation+conventional water treatment+advanced treatment(O3-BAC) process in a drinking water treatment plant in Jiangsu province. Besides regular evaluation index examination such as turbidity, TOC, CODMnand UV254, this study focused on effects of ozone dosage on the removal efficiency of disinfection by-product formation potential (DBPFP), mainly total trihalomethanes formation potential (TTHMFP) and total halogen acid formation potential (THAAFP) in each treatment unit. When the O3dosages in the pre-ozone unit and O3-BAC unit were 1.1 mg·L?1and 1.8 mg·L?1, respectively, trichloromethane chloroform formation potential (TCMFP) was the dominant THMFP species to be removed which account for 86.8 % and 60.2 %, respectively of TTHMFP removal mass. Trichloroacetic acid generating potential (TCAAFP) was the dominant THAAFP species to be removed in the pre-ozone unit which occupied an average of 77.2 % of total THAAFP removal mass. In the O3-BAC treatment unit, chloride haloacetic acid formation potential (Cl-HAAFP) was the dominant HAAFP species to be removed and accounted for 70.2 % of THAAFP removal mass. The optimized pre-ozonation+conventional water treatment+advanced treatment(O3-BAC) process finally removed up to 21.9 % and 63.2 % of TTHMFP and THAAFP, respectively, and obtained 82.49 % of biodegradable dissolved organic carbon (BDOC) total removal rate. The result indicated that the advanced treatment under optimized condition would effectively remove the DBPFP contents, and thereby reduced the output of water DBPs and ensured the drinking water safety and its biological stability.关键词
预臭氧/后臭氧/臭氧-生物活性炭/臭氧投加量/消毒副产物生成势Key words
pre-ozone/post-ozone/O3-BAC/ozone dosage/disinfection by-products formation potential分类
建筑与水利引用本文复制引用
袁展,吉红军,余冉,朱光灿..饮用水处理工艺中臭氧剂量控制消毒副产物生成势研究[J].化工学报,2018,69(6):2697-2707,11.基金项目
国家水体污染控制与治理重大科技专项(2014ZX07405002).supported by the National Water Pollution Control and Treatment Science and Technology Major Project(2014ZX07405002). （2014ZX07405002）
