Characterization of elemental and structural composition of corrosion scales and deposits formed in drinking water distribution systems

被引：145

作者：

Peng, Ching-Yu ^{[1
]}

Korshin, Gregory V. ^{[1
]}

Valentine, Richard L. ^{[2
]}

Hill, Andrew S. ^{[3
]}

Friedman, Melinda J. ^{[3
]}

Reiber, Steve H. ^{[4
]}

机构：

[1] Univ Washington, Dept Civil & Environm Engn, Seattle, WA 98105 USA

[2] Univ Iowa, Dept Civil & Environm Engn, Iowa City, IA 52242 USA

[3] Confluence Engn, Seattle, WA USA

[4] HDR Inc, Bellevue, WA 98004 USA

来源：

WATER RESEARCH | 2010年 / 44卷 / 15期

关键词：

Corrosion scales; Composition; Structure; Drinking water distribution systems; IRON PIPE CORROSION; ACCUMULATION; DESORPTION; MECHANISMS; TUBERCLES; BACTERIAL; ARSENATE; GOETHITE; SORPTION; XAS;

D O I：

10.1016/j.watres.2010.05.043

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Corrosion scales and deposits formed within drinking water distribution systems (DWDSs) have the potential to retain inorganic contaminants. The objective of this study was to characterize the elemental and structural composition of extracted pipe solids and hydraulically-mobile deposits originating from representative DWDSs. Goethite (alpha-FeOOH), magnetite (Fe3O4) and siderite (FeCO3) were the primary crystalline phases identified in most of the selected samples. Among the major constituent elements of the deposits, iron was most prevalent followed, in the order of decreasing prevalence, by sulfur, organic carbon, calcium, inorganic carbon, phosphorus, manganese, magnesium, aluminum and zinc. The cumulative occurrence profiles of iron, sulfur, calcium and phosphorus for pipe specimens and flushed solids were similar. Comparison of relative occurrences of these elements indicates that hydraulic disturbances may have relatively less impact on the release of manganese, aluminum and zinc, but more impact on the release of organic carbon, inorganic carbon, and magnesium. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：4570 / 4580

页数：11

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