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Successful Treatment of Sulfide within a Force Main with Greater Than 24 Hours of Retention Time

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Long distance force-mains are notorious for producing large quantities of sulfide and other volatile sulfur compounds (VOSs). As wastewater/sludge becomes anaerobic within force-mains sulfur reducing bacteria (SRB's) reduce sulfate to sulfide, generating sulfide. Sulfide is assimilated within organic matter to form VOS compounds.

Force-mains with retention times longer than 24 hours have presented the industry with a difficult problem for years. While nitrate based products have been available for decades, nitrate alone has proven inconsistent for long retention times.

Louisville Metropolitan Sewer District (MSD) was seeking a cost effective solution to reduce sulfide in a biosolids force-main with a retention time of 24-72 hours. Source Technologies believed a new product, Endurox, might prove to be effective for this particular situation. Subsequently, Endurox was successfully tested on the 14.7 mile long force-main that entered the Morris Forman Wastewater Treatment Plant (WWTP) in Louisville, Kentucky.
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Document Type: Research Article

Publication date: 01 January 2008

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