Application of plasma technologies for water purification

   A study was made of the separation of an oil-water emulsion by polysulfonamide membranes with a cut-off particle mass of 20 kDa, treated with low-temperature high-frequency low-pressure capacitive plasma in air at a voltage Ua = 1.5–7.5 kV and treatment time τ = 1.5–7 min. Round flat filter elements with a diameter of 47 mm were used as membranes. The emulsion with a concentration of 3 % (by volume) was prepared on the basis of the Devonian oil of the Tumutukskoye field and distilled water, stabilized by a surfactant of the Kosintol-242 brand. The experiments were carried out on a laboratory ultrafiltration separation unit.

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