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Project Details
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Effluent (1.2 MGD) from an anaerobic digester was being treated with ferric chloride to control sulfide. The ferric chloride treatment failed to sufficiently reduce hydrogen sulfide emissions (88% reduction) while simultaneously increasing TSS due to ferric sulfide formation. The ferric chloride was replaced with the AOTech process, yielding a 97% sulfide reduction while reducing TSS discharge concentrations by 27%. Treatment with the AOTech process provided control of hydrogen sulfide emissions while simultaneously reducing monthly TSS surcharges assessed by the municipal WWTP.
