To develop a method for screening ageing of water supply systems by analysing the supplied water's quality, water samples were collected from a water treatment plant, a delivery pump station, two distribution reservoirs and two feed pipes along a water pipe system. Principal component analysis of the water was conducted. In the first principal component, many elements exhibited high factor loadings, whereas the major contributor for the second principal component was iron (Fe). The unlined steel pipe, which was beyond its working lifetime, had a significantly high Fe content in suspended solids. X-ray absorption fine structure (XAFS) analysis showed differences in the abundance ratios of Fe3O4 and α-FeOOH among the sampling points. It was concluded that the concentration and speciation of Fe in supplied water can be a useful index for detecting the ageing of pipes.
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Research Article|
February 01 2013
Diagnosis of the ageing of water pipe systems by water quality and structure of iron corrosion in supplied water Available to Purchase
Yoshiyuki Ishiwatari;
1Industrial Technology Institute of Ibaraki Prefecture, 3781-1, Nagaoka, Ibaraki, Higashiibaraki, Ibaraki 311-3116, Japan and Graduate School of Science and Engineering, Ibaraki University, 4-12-1, Nakanarusawa, Hitachi, Ibaraki 316-8511, Japan
E-mail: [email protected]
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Iori Mishima;
Iori Mishima
2Center for Environmental Science in Saitama, 914, Kamitanadare, Kazo, Saitama 347-0115, Japan
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Norihiko Utsuno;
Norihiko Utsuno
3Ibaraki Kasumigaura Environmental Science Center, 1853, Okijuku, Tsuchiura, Ibaraki 300-0023, Japan
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Masafumi Fujita
Masafumi Fujita
4Department of Urban and Civil Engineering, Ibaraki University, 4-12-1, Nakanarusawa, Hitachi, Ibaraki 316-8511, Japan
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Water Supply (2013) 13 (1): 178–183.
Article history
Received:
April 22 2012
Accepted:
August 20 2012
Citation
Yoshiyuki Ishiwatari, Iori Mishima, Norihiko Utsuno, Masafumi Fujita; Diagnosis of the ageing of water pipe systems by water quality and structure of iron corrosion in supplied water. Water Supply 1 February 2013; 13 (1): 178–183. doi: https://doi.org/10.2166/ws.2013.006
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