Abstract: An apparatus for purifying water includes a first cathode encircling a first anode, with a first gap remaining between these for purifying water. The first anode is included in an anode arrangement, which additionally includes an electrically conductive flange, an electrically conducting anode support connected to the first anode and the flange and arranged to supply electricity to the first anode, and a connection point for connecting an electric wire to the flange. The flange is mechanically supported to the first cathode in said longitudinal direction (z). The flange extends in such a way that said connection point is at least as far from the longitudinal centre axis (AX) of the cathode arrangement as a point of the first cathode that is closest to said connection point.

Abstract: A method for purification of water with a water purifier. The water purifier includes an anode and a cathode as electrodes in such a way that a gap remains between the anode and the cathode. In the method, an electric field is generated between the anode and the cathode, water for purification is conveyed to the gap and an additive enhancing floc formation is introduced to water for purification or to purified water in an amount of less than 50 g and at least 1 g, measured as dry matter, per each cubic metre of water for purification. Floc material manufactured with the method, when water for purification is municipal wastewater. The use of the floc material produced in this way as a soil conditioner or for manufacturing a soil conditioner.

Abstract: A method for purification of water with a water purifier. The water purifier includes an anode and a cathode as electrodes in such a way that a gap remains between the anode and the cathode. In the method, an electric field is generated between the anode and the cathode, water for purification is conveyed to the gap and an additive enhancing floc formation is introduced to water for purification or to purified water in an amount of less than 50 g and at least 1 g, measured as dry matter, per each cubic metre of water for purification. Floc material manufactured with the method, when water for purification is municipal wastewater. The use of the floc material produced in this way as a soil conditioner or for manufacturing a soil conditioner.

Abstract: A device for purifying water. The device includes an outer casing; a cathode electrode which is arranged in the inner part of the device and is the shape of a generalized cylinder sleeve; an anode electrode, which is the shape of a generalized cylinder sleeve and which remains inside the cathode electrode so that between the anode electrode and cathode electrode remains, in a transverse direction, a gap for conveying the water. The anode electrode includes at least a first anode material. The device further includes an anode electrode support, a part of which is provided inside the anode electrode. The anode electrode support includes in its lower part a flange which is arranged to support the anode electrode from its lower part, whereby the anode electrode can be lifted by means of the anode electrode support out of the cathode electrode and is thus replaceable.