globalchange  > 气候减缓与适应
DOI: 10.1016/j.watres.2018.03.073
Scopus记录号: 2-s2.0-85047394768
论文题名:
Effects of phosphate-enhanced ozone/biofiltration on formation of disinfection byproducts and occurrence of opportunistic pathogens in drinking water distribution systems
作者: Xing X.; Wang H.; Hu C.; Liu L.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 139
起始页码: 168
结束页码: 176
语种: 英语
英文关键词: BAC ; Biofilm ; Disinfection by-products ; Drinking water distribution systems ; Extracellular polymeric substances ; Opportunistic pathogens
Scopus关键词: Activated carbon ; Activated carbon treatment ; Amides ; Biodegradation ; Biofilms ; Byproducts ; Disinfection ; Effluents ; Organic carbon ; Ozone ; Potable water ; Proteins ; Water distribution systems ; Water quality ; Biologically activated carbons ; Characterization techniques ; Disinfection by-product ; Disinfection byproducts ; Dissolved organic carbon ; Extra-cellular polymeric substances ; Fourier transform infrared spectra ; Protein secondary structure ; Ozone water treatment ; amide ; chlorine ; drinking water ; organic carbon ; ozone ; phosphate ; polysaccharide ; propidium iodide ; carbon ; chlorine ; disinfectant agent ; drinking water ; oxidizing agent ; ozone ; phosphate ; activation energy ; bacterium ; biodegradation ; biofilm ; biofiltration ; bioreactor ; dissolved organic carbon ; distribution system ; drinking water ; effluent ; ozone ; pathogen ; phosphate ; polymer ; polysaccharide ; protein ; Acanthamoeba ; Aeromonas ; alpha helix ; Article ; beta sheet ; biofilm ; biofiltration ; disinfection ; effluent ; excitation emission matrix fluorescence ; fluorescence ; Hartmanella vermiformis ; Hartmannella ; high performance size exclusion chromatography ; hydrophobicity ; infrared spectroscopy ; microbial biomass ; Mycobacterium ; Mycobacterium avium ; nonhuman ; priority journal ; protein secondary structure ; Pseudomonas aeruginosa ; real time polymerase chain reaction ; size exclusion chromatography ; water quality ; water supply ; analysis ; bacterium ; chemistry ; disinfection ; drug effect ; filtration ; isolation and purification ; metabolism ; microbiology ; procedures ; water management ; water pollutant ; Aeromonas ; Hartmannella vermiformis ; Mycobacterium ; Mycobacterium avium ; Pseudomonas aeruginosa ; Bacteria ; Biofilms ; Carbon ; Chlorine ; Disinfectants ; Disinfection ; Drinking Water ; Filtration ; Oxidants ; Ozone ; Phosphates ; Water Microbiology ; Water Pollutants ; Water Purification
英文摘要: The effects of ozone-biologically activated carbon (O3-BAC) treatment with various phosphate doses (0, 0.3 or 0.6 mg/L) were investigated on the formation of disinfection by-products (DBPs) and occurrence of opportunistic pathogens (OPs) in drinking water distribution systems (DWDSs) simulated by annular reactors (ARs). It was found that the lowest DBPs and the highest inactivation of OPs such as Mycobacterium spp., Mycobacterium avium, Aeromonas spp., Pseudomonas aeruginosa and Hartmanella vermiformis, occurred in the effluent of the AR with 0.6 mg/L phosphate addition. Based on the results of different characterization techniques, for the AR with 0.6 mg/L phosphate-enhanced O3-BAC treatment, dissolved organic carbon in the influent exhibited the lowest concentration and most stable fraction due to the improved biodegradation effect. Moreover, the total amount of suspended extracellular polymeric substances (EPS) in the bulk water of the AR decreased greatly, resulting in the lowest chlorine consumption and DBPs formation in the AR. In Fourier transform infrared spectra of the suspended EPS, the amide II band (1600-1500 cm−1) disappeared and the protein/polysaccharide ratio decreased remarkably, indicating the destruction of protein and a decrease in hydrophobicity. Moreover, β-sheets and α-helices in the protein secondary structures were degraded while the random coils increased sharply as phosphate addition increased to 0.6 mg/L, inhibiting microbial aggregation and hence weakening the chlorine-resistance capability. Thus, most of the OPs in suspended biofilms were more easily inactivated by residual chlorine, resulting in the lowest OPs occurrence in the effluent of the AR. Our findings indicated that enhancing the efficiency of the BAC filter by adding phosphate is a promising method for improving water quality in DWDSs. © 2018 Elsevier Ltd
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112739
Appears in Collections:气候减缓与适应

Files in This Item:

There are no files associated with this item.


作者单位: Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; Key Laboratory forWater Quality and Conservation of the Pearl River Delta, Ministry of Education, Institute of Environmental Research at Greater Bay, GuangzhouUniversity, Guangzhou, 510006, China; University of Chinese Academy of Sciences, Beijing, 100049, China

Recommended Citation:
Xing X.,Wang H.,Hu C.,et al. Effects of phosphate-enhanced ozone/biofiltration on formation of disinfection byproducts and occurrence of opportunistic pathogens in drinking water distribution systems[J]. Water Research,2018-01-01,139
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Xing X.]'s Articles
[Wang H.]'s Articles
[Hu C.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Xing X.]'s Articles
[Wang H.]'s Articles
[Hu C.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Xing X.]‘s Articles
[Wang H.]‘s Articles
[Hu C.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.