PROBLEM TO BE SOLVED: To provide a cleaning technique for simply executing detoxification treatment of a target treatment object by an electro-osmosis repair method for the risk that there is the possibility that harmful contaminants which cannot be determined only by visual observation are stuck since sieving is performed for each particle size again when performing recycling treatment, and a washing step is not executed further when the target treatment object is not particularly dirty according to visual observation determination, in a conventional treatment method of industrial waste. ! SOLUTION: In a cleaning technique, application and superimposition are performed utilizing characteristics of triangular wave pulse signals of a DC voltage and an AC voltage. An electric field area is controlled in a controller 20, vibrations are given between solid phase particles, ion exchange water 31 or city water 31 and a buffer solution 31 are sent to electrode pipes 60 and 70, electrolysis by redox reaction is made to act, an electroosmotic phenomenon or electric iontophoresis phenomenon is utilized, an object contaminant in the target treatment object is condensed and recovered in a filter separation apparatus 50, and the target treatment object is detoxified efficiently. ! COPYRIGHT: (C)2014,JPO&INPIT