Abstract: Method for purifying liquids or fluids to eliminate harmful admixtures and microorganisms by using aerating and incidence of electric charges, wherein purified liquid undergoes gas-dynamic dispersion with the help of blast air passed through channels sloping below an angle of 30-50° according to a level of purified liquid, at a flow velocity of blast air of 10 to 100 m/s, at channel hydraulic resistance varying between 1.5 to 10 kPa and at specific consumption of dispersed water from 0.1 to 30 kg on 1 m3 of blast air. The blast air is previously preliminarily ionized in a non-homogenous electrostatic field of coronary discharges at a voltage between electrodes in a value range of from 3 kV to 10 millions V at corona current values between electrodes in a value range of from 10 to 1000 mA and at a specific power output of electrical discharges in a value range from 0.1 to 10 kWh on 1 m3 of conditioned liquid.