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Sulfide Corrosion and Control in the City of Modesto Primary Effluent Outfall (abstract)

by Howard L. Hoffman, Kennedy/Jenks Engineers, Palo Alto, CA, USA,



Document Type: Proceeding Paper

Part of: Environmental Engineering

Abstract:

The City of Modesto has a 60 inch diameter, 6- one-half mile long reinforced concrete pipeline conveying primary effluent from the primary treatment plant to the remote oxidation pond system. Severe sulfide corrosion and resulting pipe leaks in certain portions of the line has occured. The parallel 2 miles were designed with assistance from computerized sulfide corrosion prediction models. This resulted in a design incorporating polyvinyl chloride (PVC) lined reinforced concrete pipe in the most corrosion-prone areas and 'Az' reinforced concrete pipe in the rest of the line. Chlorination has been resumed to protect the original line and to prolong the life of the new Az pipe.

Subject Headings: Concrete pipes | Plastic pipes | Corrosion | Reinforced concrete | Sulfides | Pipeline management | Pipe leakage

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