Decontamination of soils impregnated with hydrocarbons
It is proposed to rehabilitate technogenic formations by washing contaminated soils by surfactant solutions using injection and production wells. The electric field created by a constant current source and electrodes, represented by pipes placed in wells is used as a method of intensification of soil washing from hydrocarbons. The advantage of the proposed method of intensification of the soil washing from hydrocarbons is experimentally proved. After removal, the washing solution is to be cleaned by mechanical, physical-chemical and electrical-chemical methods. High efficiency of solution purification by electrical flotation using reagents is shown, the mathematical model of the process is given. The purified washing solution before injection into the reservoir is proposed to be treated in the reaction chamber by high-voltage spark discharges of high power in order to form strong oxidizing agents in the solution, necessary for intensification of the subsequent washing of oil-polluted man-made formations.