Water Science & Technology: Water Supply Vol 1 No 3 pp 11–18 © IWA Publishing 2001
Drinking water distribution - improvements of the surface complexation model for iron corrosion
A. Elfström Broo*, B. Berghult** and T. Hedberg***
*VBB VIAK AB, PO Box 2203, SE-403 14 Göteborg, Sweden
**VBB VIAK AB, PO Box 2203, SE-403 14 Göteborg, Sweden
***WET, Chalmers University of Technology, 412 96 Göteborg, Sweden
ABSTRACT
A previously presented theory for iron corrosion in the distribution networks for drinking water, the surface complexation model, was extended by the effect of natural organic matter and redox potential. The model calculations showed good agreement with measurements of the corrosion rate as obtained from coupon tests. A theory for the relation between the dissolved iron content in the water of the distribution networks and the corrosion rate is proposed. The model calculations also showed good agreement with the measured dissolved iron content.
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