首页|Implications of Nutrient Release from Iron Metal for MicrobialRe-growth in Water Distribution Systems

Implications of Nutrient Release from Iron Metal for MicrobialRe-growth in Water Distribution Systems

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Control of microbial re-growth on iron pipes is a major challenge for water utilities。 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 of phosphorus。 Under some circumstances corroding iron and steel may produce all key nutrients necessary for bacterial re-growth including fixed carbon, fixed nitrogen andphosphorus。 Conceptual models were examined to compare the relative importance of phosphorus derived from bulk water versus that coming from corrosion。 It seems clearthat phosphorus from corroding metal could serve to remove limitations to re-growth that might exist in the bulk water。

phosphorusmicrobial re-growthnutrientiron pipecorrosion

Siyuan C. Morton、Yan Zhang、Marc A. Edwards

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Dept. of Civil and Environmental Engineering Virginia Polytechnic Institute and State University

Dept. of Civil and Environmental EngineeringVirginia Polytechnic Institute and State University

AWWA annual conference

Orlando, FL(US)

2004 AWWA annual conference

1-12

2004