Characteristics of DBPs reduction of AOM by dissolved air flotation

doi:10.1080/19443994.2014.917990

CORC > 北京大学 > 环境科学与工程学院

	Characteristics of DBPs reduction of AOM by dissolved air flotation
	Jeong, Ingyu ; Yi, Minjoo ; Zhao, Huazhang ; Dockko, Seok
刊名	desalination and water treatment
	2015
关键词	Nitrogenous disinfection by-product Disinfection by-product formation precursor Carbonaceous disinfection by-product Dissolved air flotation Algal organic matter DISINFECTION BY-PRODUCTS MICROCYSTIS-AERUGINOSA ORGANIC-MATTER ALGAE COAGULATION IMPACT CELL
DOI	10.1080/19443994.2014.917990
英文摘要	Algae increase the concentration of dissolved organic carbon (DOC), which causes unpleasant tastes and odors in water. This DOC is known as algal organic matter, which comprises extracellular organic matter and intracellular organic matter. Carbonaceous disinfection by-products (C-DBPs) and nitrogenous DBP (N-DBPs) are produced from DOC by disinfection processes, and N-DBPs are about 140 times more toxic than C-DBPs. We compared the levels of N-DBPs when dissolved air flotation (DAF) or conventional gravity sedimentation was used to remove algae before/after chlorination. The degradation of algal cells by chlorine treatment increased the DOC level, which was attributable to DBPs/DBP formation precursors (DBPFPs). The levels of N-DBPs such as dechloroacetonitrile DCAN and C-DBPs such as trihalomethanes increased with the amount of chlorine applied. Haloacetonitriles increased continuously after treatment because the residual chlorine reacted with dissolved organic nitrogen. C-DBPs and N-DBPs were reduced by inter-chlorination rather than pre-chlorination. Extracting algae from source waters is effective for reducing the chlorine dose and the levels of DBPFPs in drinking water treatment processes. The application of DAF prior to inter-chlorination greatly reduced the N-DBP levels in source water containing algae.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000352305700009&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Engineering, Chemical; Water Resources; SCI(E); 0; ARTICLE; jiggij@dankook.ac.kr; minjoo@uos.ac.kr; zhang@pku.edu.cn; dockko@dankook.ac.kr; 4-5; 1436-1444; 54
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/206984]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Jeong, Ingyu,Yi, Minjoo,Zhao, Huazhang,et al. Characteristics of DBPs reduction of AOM by dissolved air flotation[J]. desalination and water treatment,2015.
APA	Jeong, Ingyu,Yi, Minjoo,Zhao, Huazhang,&Dockko, Seok.(2015).Characteristics of DBPs reduction of AOM by dissolved air flotation.desalination and water treatment.
MLA	Jeong, Ingyu,et al."Characteristics of DBPs reduction of AOM by dissolved air flotation".desalination and water treatment (2015).