Effects of Polluted Water on the Metallic Water Pipelines

Corrosion of metallic water pipelines buried below ground surface is a function of the nature of the surrounding soil and groundwater. This gives the importance of knowing the physical and chemical characteristics of the pipe-s surrounding environment. The corrosion of externally – unprotected metallic water pipelines, specially ductile iron pipes, in localities with aggressive soil conditions is becoming a significant problem. Anticorrosive protection for metallic water pipelines, their fittings and accessories is very important, because they may be attached by corrosion with time. The tendency of a metallic substrate to corrode is a function of the surface characteristics of the metal and of the metal/protective film interface, the physical, electrical and electrochemical properties of the film, and the nature of the environment in which the pipelines system is placed. In this work the authors have looked at corrosion problems of water pipelines and their control. The corrosive properties of groundwater and soil environments are reviewed, and parameters affecting corrosion are discussed. The purpose of this work is to provide guidelines for materials selection in water and soil environments, and how the water pipelines can be protected against metallic corrosion.

Authors:

• Abdul-Khaliq M. Hussain
• Bashir A. Tantosh
• El-Sadeg A. Abdalla

Keywords:

• Corrosion
• Drinking Water
• Metallic WaterPipelines
• Polluted Water.

References:

[1] Millette J.R., Hammonds A.F., Pansing, M.F., Hanson
E.C. and Clark A. (1980), Aggressive water: Assessing the Extent of
the Proplem. J.Am.Water warks Assoc. 72(5): 262-266.
[2] Simgley J.E., The Search for a Corrosion Index. J.Am.water Works
Assoc. 73(11) (1981) : 579-582.
[3] Kriewall G. (1997). Tracking Bacteria Not Easy. Times Herald, August
22.
[4] Langelier W.F. (1936). The Analytical Control of Anticorrosion Water
Treatment. J.Am. Water Works Assos. 28 (1936): 1500.
[5] Merrill D.T. and Sanks R.L. (1978). Corrosion Control by Deposition of
CaCO3 Films. J.Am. Water Works Assoc. 69(11) (1977): 592- 599; 69
(12) (1977): 634- 640; 70(1): 12-18.
[6] Schock M.R., Understanding Corrosion Control Strategies for Lead J.
Am. Water Workes, Understanding Corrosion Control Strategies for
Lead, J.Am. Water Works Assoc. 81(7) (1989):
[7] Ruda T. (1997). Microbial Regrowth And Distribution System
Management. Of flow. American Water Works Association, August,
23(8).