Characterization of chemical composition and bacterial community of corrosion scales in different drinking water distribution systems

2017 ◽  
Vol 3 (1) ◽  
pp. 147-155 ◽  
Author(s):  
Haibo Wang ◽  
Chun Hu ◽  
Lang Yin ◽  
Sujia Zhang ◽  
Lizhong Liu
Keyword(s):  
Drinking Water ◽  
Chemical Composition ◽  
Distribution Systems ◽  
Water Distribution ◽  
Iron Release ◽  
Drinking Water Distribution Systems ◽  
Biochemical Function ◽  
Drinking Water Distribution ◽  
Corrosion Scales

There is a relationship between biochemical function and chemical composition of corrosion scales, and Fe3O4formation reduced iron release.

Effect of Seasonal Variation on Iron Release in Drinking Water Distribution Systems

2014 ◽  
Vol 955-959 ◽  
pp. 3381-3384
Author(s):  
Hao Qiang Tan ◽  
Wen Jie He ◽  
Hong Da Han
Keyword(s):  
Drinking Water ◽  
Seasonal Variation ◽  
Distribution Systems ◽  
Water Distribution ◽  
Statistical Significance ◽  
Water Distribution Systems ◽  
Total Iron ◽  
Iron Release ◽  
Drinking Water Distribution Systems ◽  
Drinking Water Distribution

Analyzing the seasonal variation of water quality, the indices which include total iron, pH, temperature, DO, alkalinity and hardness were of high statistical significance, and total iron had a high correlation with temperature, which influences many parameters influencing iron release, such as DO, solution viscosity, thermodynamic properties and microbial activity. Therefore, it can be concluded that temperature is a main factor that affects iron release in seasonal change for drinking water distribution systems. Variation in season and temperature should be paid attention to in practice of water supply.

Preventing the colloidal dispersion of Pb(iv) corrosion scales and lead release in drinking water distribution systems

2019 ◽  
Vol 5 (7) ◽  
pp. 1262-1269 ◽  
Author(s):  
Gregory Korshin ◽  
Haizhou Liu
Keyword(s):  
Drinking Water ◽  
Distribution Systems ◽  
Water Distribution ◽  
Solid Phase ◽  
Water Distribution Systems ◽  
Colloidal Dispersion ◽  
Drinking Water Distribution Systems ◽  
Drinking Water Distribution ◽  
Lead Release ◽  
Corrosion Scales

Lead(iv) oxide PbO2 is one dominant solid phase in lead corrosion scales of drinking water distribution systems.

scholarly journals Cr(VI) and Cr(III) Release From Different Layers of Cast Iron Corrosion Scales in Drinking Water Distribution Systems: The Impact of pH, Temperature, Sulfate, and Chloride

2021 ◽  
Author(s):  
Yimei Tian ◽  
Tiantian Yu ◽  
Jingyi Shen ◽  
Guolei Zheng ◽  
Han Li ◽  
...  
Keyword(s):  
Drinking Water ◽  
Distribution Systems ◽  
Water Distribution ◽  
Water Distribution Systems ◽  
Extraction Procedure ◽  
Surrounding Water ◽  
Drinking Water Distribution Systems ◽  
Drinking Water Distribution ◽  
Corrosion Scales ◽  
The Impact

Abstract Chromium accumulated from source water and pipeline lining materials in corrosion scales could potentially be released into bulk water in drinking water distribution systems (DWDS). Chromium behaviors between corrosion scale phase and the surrounding water phase vary spatially in different layers and temporally in different DWDS running periods. In this study, corrosion scales sampled from actual DWDS were first characterized by SEM, XRD, XRF, and the modified BCR three-step sequential extraction procedure. Then scales were divided into the outer and inner layers for subsequent analysis. Static accumulation and release experiments were performed with Cr(VI) and Cr(III) on two distinct scale layers to systematically assess the influence of pH, temperature, sulfate, and chloride. The release behaviors of Cr(VI) under the co-effect of multiple factors were investigated in orthogonal experiments. Results showed that in the outer and inner layers of corrosion scales, chromium exhibited differences in accumulation and release behaviors, with the outer layer accumulating less and releasing more. The mechanisms of chromium retention based on different iron (oxyhydr)oxides were discussed.

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