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Enabling the Performance of the MBBR Installed to Treat Meat Processing Wastewater

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Abstract:

West Liberty Foods (WLF) meat processing plant in Mount Pleasant, Iowa was discharging wastewater into a local creek. New regulations required that suspended solids (TSS), BOD's and FOG's (fats oil and grease) are removed almost completely before a discharge. The MBBR system was installed to achieve these goals. However, increase in plant capacity and amount of contaminants in wastewater resulted in complete failure of the installed system. To enable the performance of the MBBR, the GEM flotation – pretreatment System was installed ahead of the bioreactor. The System reduced TSS, FOG and BOD to the levels that MBBR could handle. The System also introduced capabilities to robustly neutralize the pH, eliminate antimicrobial agents and reduce amount of foam forming substances. Large equalizations tanks were built to average out fluctuations in wastewater contaminants. The installed System performs well, saving WLF large amounts in discharge fees and fines.

Document Type: Research Article

DOI: https://doi.org/10.2175/193864708788733378

Publication date: 2008-01-01

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