Patent ID: 8846732

Claim:
A composition for effectively inhibiting sulfide production by sulfate-reducing bacteria (SRB), said composition comprising a synergistic combination of: (a) a non-oxidizing biocide component capable of directly killing a first portion of the SRB, wherein said biocide component is present in the composition in a first concentration that is less than about 50% of the minimum inhibitory concentration (MIC) of the biocide component, wherein said biocide component is selected from the group consisting of formaldehyde, glutaraldehyde, acrolein, cocodiamine, bronopol, 2-2-dibromo-3-nitrilo-propionamide (DBNPA), isothiazolone, metronidazole, and combinations of one or more thereof; and (b) a metabolic inhibitor component capable of inhibiting the sulfate-reducing growth of a second portion of the SRB without directly killing the second portion of the SRB, wherein said metabolic inhibitor component is present in the composition in a first concentration that is less than about 50% of the MIC of the biocide component, wherein said metabolic inhibitor component is selected from the group consisting of nitrite, molybdate, tungstate, selenate, anthraquinone, and combinations of one or more thereof.