FIELD: chemistry.
SUBSTANCE: method involves treating a water-based medium containing sulphate-reducing bacteria SRB in industrial aqueous systems of chemical production and oil refining. Inhibition of production of biogenic sulphide with SRB takes place as a result of synergetic action of a biocide component in a first concentration and a metabolic inhibitor in a second concentration. The biocide immediately destroys the first portion of SRB. The biocide component is selected from a group comprising aldehydes, amine-type compounds, halogenated compounds, sulphur compounds, salts of quaternary phosphonium and/or combinations thereof. The metabolic inhibitor inhibits growth of a second portion of SRB without its direct destruction. The metabolic inhibitor component is selected from a group comprising nitrite, molybdate, tungstate, selenate, anthraquinone and/or combinations thereof. Contact between the SRB and the biocide and metabolic inhibitor can take place continuously, intermittently or simultaneously.
EFFECT: method ensures efficient inhibition of production of biogenic sulphide with SRB during combined use of components in considerably lower concentrations than if the biocide or metabolic inhibitor was used separately.
25 cl, 2 dwg, 1 ex
