Abstract: A method for the electric purification and decontamination of liquids containing suspended and dissolved matter, such as mineral, organic and biological substances, comprises passing a pulsating electric current through a starting liquid, the current having sufficient pulse duration and voltage to cause electric discharge between the electrodes. An apparatus for realizing the method of electric purification and decontamination of liquids comprising a coagulation chamber with at least two rod-type electrodes electrically insulated by means of individual insulators from the housing of the coagulation chamber and mounted together with their insulators to execute reciprocal motion along their longitudinal axes.