| abstract |
PCT No. PCT/NO96/00285 Sec. 371 Date Sep. 11, 1998 Sec. 102(e) Date Sep. 11, 1998 PCT Filed Dec. 6, 1996 PCT Pub. No. WO97/20777 PCT Pub. Date Jun. 12, 1997Water cleaning device with at least one reactor device (4) for electrolytic cleaning of polluted water, assembled of one or more anodes (1a) and cathodes (2a), one flotation device (14, 15) and one device for handling sludge (23, 24, 18). The water flow inside and just outside (downstream) of the electrochemical reactor (4) is turbulent. The turbulence is created by one or more mechanical devices which affect the flow pattern. Examples of such mechanical devices may be a corrugated or rough, an exchangeable inlay plate (5) on the cathode surface, an inert, non-conducting rotating or stationary piece (20) in the narrow space between anode and cathode, a pulsating inlet flow of polluted water, recirculation of processed water (from outlet to inlet of the electrochemical reactor), a static mixer just outside (downstream) the electrochemical reactor, that the water enters through several slanted/inclined channels in the cathode, opposite rotational directions of anode and cathode or a combination of several of these methods. The cathode has a shaft or stud (3) penetrating the anode to facilitate rotation of the cathode. The electrochemical reactor(s) are mounted at the side of the flotation device at the same elevation as the water level. The flotation device is arranged as a tank (14) or a helical system (15), and the device for handling the sludge is a rolling band (23) with adjustable flaps (24) or a phase separator (18) located at the outlet of the helix (15). |