Influence of biocides based on potassium monopersulfate on microflora of recycling water of petrochemical production
Elevated level of microflora in water recycling systems may cause biological corrosion and, consequently, the destruction of systems and constructions. Therefore it is necessary to carry out regular treatment of recycling water by biocides - substances that suppress the activity of microorganisms. In this regard, the investigations of influence degree of oxidizing biocides based on potassium monopersulfate SE-1 and ICW-1 on microorganisms were conducted. Recommended concentrations of these agents for treating the industrial water recycling system of petrochemistry were estimated. Therefore, the seeding of successive decimal dilutions was carried out on the main selective nutrient solution: agar, agar-meat infusion, sabouraud and Tamiya medium with different concentrations of biocides. The research results show that the studied biocides have a wide spectrum of effect (action) and effectively inhibit the growth of various systematic groups of recycled industrial water microorganisms (bacteria, micromycetes and algae). Recommended concentrations of the agents for treating the recycling water systems equal to 50 mg/l (for the SE-1) and 30 mg/l (ICW-1).