DOI: 10.1016/j.watres.2017.10.065
Scopus记录号: 2-s2.0-85034838790
论文题名: Impacts of water quality on the corrosion of cast iron pipes for water distribution and proposed source water switch strategy
作者: Hu J. ; Dong H. ; Xu Q. ; Ling W. ; Qu J. ; Qiang Z.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 129 起始页码: 428
结束页码: 435
语种: 英语
英文关键词: Bacterial community
; Cast iron pipe
; Corrosion scale
; Switch strategy
; Water quality
Scopus关键词: Bacteria
; Biochemical oxygen demand
; Calcite
; Cast iron pipe
; Dissolved oxygen
; Groundwater
; Hardness
; Magnetite
; pH
; Pipeline corrosion
; Potable water
; Sulfur compounds
; Surface waters
; Water quality
; Water supply systems
; Bacterial community
; Corrosion scale
; Drinking water distribution
; Iron oxidizing bacteria
; Iron reducing bacteria
; Oxygen consumption
; Surface water and groundwaters
; Water distributions
; Cast iron
; calcium
; chloride ion
; chlorine
; disinfectant agent
; drinking water
; ferric hydroxide
; ground water
; iron
; magnetite
; monochloramine
; sulfate
; sulfur
; surface water
; water
; carbonic acid
; ferric ion
; iron
; iron derivative
; magnetite
; mineral
; siderite
; bacterium
; concentration (composition)
; corrosion
; disinfection
; iron
; microbial community
; oxygen consumption
; pipe
; spatial distribution
; water quality
; alkalinity
; Article
; bacterium
; corrosion
; disinfection
; hardness
; iron oxidizing bacterium
; microbial community
; nonhuman
; pilot study
; priority journal
; sulfur oxidizing bacterium
; water flow
; water quality
; water supply
; water transport
; chemistry
; Bacteria (microorganisms)
; Carbonates
; Corrosion
; Disinfectants
; Ferric Compounds
; Ferrosoferric Oxide
; Groundwater
; Iron
; Iron Compounds
; Minerals
; Water
; Water Quality
; Water Supply
英文摘要: Switch of source water may induce “red water” episodes. This study investigated the impacts of water quality on iron release, dissolved oxygen consumption (ΔDO), corrosion scale evolution and bacterial community succession in cast iron pipes used for drinking water distribution at pilot scale, and proposed a source water switch strategy accordingly. Three sets of old cast iron pipe section (named BP, SP and GP) were excavated on site and assembled in a test base, which had historically transported blended water, surface water and groundwater, respectively. Results indicate that an increasing Cl− or SO4 2− concentration accelerated iron release, but alkalinity and calcium hardness exhibited an opposite tendency. Disinfectant shift from free chlorine to monochloramine slightly inhibited iron release, while the impact of peroxymonosulfate depended on the source water historically transported in the test pipes. The ΔDO was highly consistent with iron release in all three pipe systems. The mass ratio of magnetite to goethite in the corrosion scales of SP was higher than those of BP and GP and kept almost unchanged over the whole operation period. Siderite and calcite formation confirmed that an increasing alkalinity and hardness inhibited iron release. Iron-reducing bacteria decreased in the BP but increased in the SP and GP; meanwhile, sulfur-oxidizing, sulfate-reducing and iron oxidizing bacteria increased in all three pipe systems. To avoid the occurrence of “red water”, a source water switch strategy was proposed based on the difference between local and foreign water qualities. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113096
Appears in Collections: 气候减缓与适应
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作者单位: Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 18 Shuang-qing Road, Beijing, 100085, China; Beijing Municipal Research Institute of Environmental Protection, 59 Beiyingfang Middle Street, Beijing, 100037, China
Recommended Citation:
Hu J.,Dong H.,Xu Q.,et al. Impacts of water quality on the corrosion of cast iron pipes for water distribution and proposed source water switch strategy[J]. Water Research,2018-01-01,129