Apparatus for electrochemically treating waste water

The invention relates to a device for electrochemically treating waste water, said apparatus comprising an electrolytic cell at least through which the wastewater to be treated is passed, wherein the at least one electrolytic cell, a plurality of electrodes packets with electrodes, which is characterized in that the electrodes in the majority are arranged electrodes packets such that the waste water to be treated is passed through the holes in the electrodes, and the at least one of the electrode packages having three electrodes, which are arranged such that the effluent to be treated is passed through all of the electrodes.