Characteristics of iron corrosion scales established under blending of ground, surface, and saline waters and their impacts on iron release in the pipe distribution system

2006 ◽  
Vol 48 (2) ◽  
pp. 322-342 ◽  
Author(s):  
Zhijian Tang ◽  
Seungkwan Hong ◽  
Weizhong Xiao ◽  
James Taylor
Keyword(s):  
Distribution System ◽  
Ground Surface ◽  
Iron Release ◽  
Iron Corrosion ◽  
Saline Waters ◽  
Corrosion Scales

Water treatment to reduce internal corrosion in the drinking water distribution system in Oslo

2001 ◽  
Vol 1 (3) ◽  
pp. 91-96 ◽  
Author(s):  
L.J. Hem ◽  
E.A. Vik ◽  
A. Bjørnson-Langen
Keyword(s):  
Water Treatment ◽  
Corrosion Rate ◽  
Distribution System ◽  
Water Distribution ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Corrosion Monitoring ◽  
Copper Corrosion ◽  
Iron Corrosion ◽  
Internal Corrosion

In 1995 the new Skullerud water treatment plant was put into operation. The new water treatment includes colour removal and corrosion control with an increase of pH, alkalinity and calcium concentration in addition to the old treatment, which included straining and chlorination only. Comparative measurements of internal corrosion were conducted before and after the installation of the new treatment plant. The effect of the new water treatment on the internal corrosion was approximately a 20% reduction in iron corrosion and a 70% reduction in copper corrosion. The heavy metals content in standing water was reduced by approximately 90%. A separate internal corrosion monitoring programme was conducted, studying the effects of other water qualities on the internal corrosion rate. Corrosion coupons were exposed to the different water qualities for nine months. The results showed that the best protection of iron was achieved with water supersaturated with calcium carbonate. Neither a high content of free carbon dioxide or the use of the corrosion inhibitor sodium silicate significantly reduced the iron corrosion rate compared to the present treated water quality. The copper corrosion rate was mainly related to the pH in the water.

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.

Earthquake Response of Underground Pipeline Networks in Christchurch, NZ

2014 ◽  
Vol 30 (1) ◽  
pp. 183-204 ◽  
Author(s):  
Thomas D. O'Rourke ◽  
Sang-Soo Jeon ◽  
Selcuk Toprak ◽  
Misko Cubrinovski ◽  
Matthew Hughes ◽  
...  
Keyword(s):  
Distribution System ◽  
Distribution Systems ◽  
Ground Surface ◽  
Lessons Learned ◽  
Peak Ground Velocity ◽  
Underground Pipeline ◽  
Gas Distribution ◽  
Pipeline Networks ◽  
Before And After ◽  
Ground Surface Settlement

This paper explores key aspects of underground pipeline network response to the Canterbury earthquake sequence in Christchurch, New Zealand, including the response of the water and wastewater distribution systems to the MW6.2 22 February 2011 and MW6.0 13 June 2011 earthquakes, and the response of the gas distribution system to the MW7.1 4 September 2010 earthquake, as well as the 22 February and 13 June events. Repair rates, expressed as repairs/km, for different types of pipelines are evaluated relative to (1) the spatial distribution of peak ground velocity outside liquefaction areas and (2) the differential ground surface settlement and lateral ground strain within areas affected by liquefaction, calculated from high-resolution LiDAR survey data acquired before and after each main seismic event. The excellent performance of the gas distribution network is the result of highly ductile polyethylene pipelines. Lessons learned regarding the earthquake performance of underground lifeline systems are summarized.

scholarly journals The Interaction between the Bulking Water and Pipe Surface and Their Correlations in Water Distribution System

2018 ◽  
Vol 7 (2) ◽  
pp. 83
Author(s):  
Ruilian Li ◽  
Ming-qing Feng ◽  
Xiao-hui Bai
Keyword(s):  
Water Quality ◽  
Distribution System ◽  
Water Distribution ◽  
Water Distribution System ◽  
Tap Water ◽  
Close Relation ◽  
Quality Parameters ◽  
Iron Corrosion ◽  
Pipe Surface ◽  
Pipe Water

The pipelines corrosion can result discolor and particle increase in tap water and the complaints from the consumers. It also has the economic and hydraulic impacts for the replacement of broken pipes and fouling of corroded pipes. This paper aimed to investigate the effect of processed drinking water on metal pipe corrosion in water distribution system and the relations between the bulking water quality and pipe corrosion. It was found that there is a close relation between iron corrosion and water quality parameters in water distribution pipelines. It was shown that lower pH and alkalinity can increase the corrosion rate, while higher chlorides and sulfate may cause pitting corrosion. DOC in pipe water would be beneficial for microbial induced corrosion.

Metal-release potential from iron corrosion scales under stagnant and active flow, and varying water quality conditions

2020 ◽  
Vol 175 ◽  
pp. 115675 ◽  
Author(s):  
Manjie Li ◽  
Yuhui Wang ◽  
Zhaowei Liu ◽  
Yi Sha ◽  
Gregory V. Korshin ◽  
...  
Keyword(s):  
Water Quality ◽  
Metal Release ◽  
Iron Corrosion ◽  
Corrosion Scales ◽  
Release Potential ◽  
Active Flow
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