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AWWA ACE59830
- Implications of Nutrient Release from Iron Metal for Microbial Re-growth in Water Distribution Systems
- Conference Proceeding by American Water Works Association, 06/17/2004
- Publisher: AWWA
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Control of microbial re-growth on iron pipes is a major challenge for waterutilities. This work examines the inter-relationship between iron corrosion and bacterialre-growth, with a special focus on the potential of iron pipe to serve as a source ofphosphorus. Under some circumstances corroding iron and steel may produce all keynutrients necessary for bacterial re-growth including fixed carbon, fixed nitrogen andphosphorus. Conceptual models were examined to compare the relative importance ofphosphorus derived from bulk water versus that coming from corrosion. It seems clearthat phosphorus from corroding metal could serve to remove limitations to re-growth thatmight exist in the bulk water. Includes 32 references, figures, appendix.
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