SEPARATION OF OIL AND PETROLEUM EMULSIONS BY POLYSULFONAMIDE MEMBRANES TREATED WITH CORONA DISCHARGE PLASMA

Research on the separation of emulsions based on «I20-A» grade industrial oil and oil from the Tumutuk field using polysulfonamide (PSA) membranes has been carried out. In order to intensify the process and increase resistance to oiling, polymer filters were treated with corona discharge plasma. It was found that as a result of the modification, the separation efficiency increased to ≈ 90 %, and productivity increased up to 10 times. The results of the study allow us to recommend the use of a proven membrane ultrafiltration method for treating wastewater from emulsified oils, for example, in the composition of used cutting fluids or cleaning solutions. Corona plasma treatment improves the efficiency and productivity of water-oil emulsion separation. It was revealed that when separating an oil-water emulsion, productivity as a result of membrane modification in most cases, contrary to what was expected, decreases. This circumstance is explained by the more complex qualitative and, accordingly, dispersion composition of oil, which contributes to clogging of filter pores. Thus, to purify water from emulsified oil with polymer membranes, it is necessary to provide an additional technological solution for pre-treatment of the mixture being separated in order to increase the service life of the filters.