FIELD: water treatment. SUBSTANCE: in an apparatus containing at least one flow diaphragm electrolyzer with working anode and auxiliary cathode chambers having separate inlet and outlet pipes, anode chamber is provided with closed circuit formed by pipeline connecting outlet and inlet pipes of anode chamber. The latter, in turn, is connected via anode chamber water-supply pipeline with device providing increase in the pressure of water supplied into anode chamber. Outlet pipe of anode chamber is connected through pipeline provided with pressure control to gas- separation tank that, in its top part, is connected with gas-liquid mixer and, in its bottom part, with discharge pipeline. EFFECT: improved design. 2 cl, 1 dwg
