| 摘要 |
The device for the production of partially de-cationized water, comprises first ion-exchange column that is loaded with strongly anionic ion-exchange resin (5) for cations, an upstream water inlet (3) for the water to be de-cationized, a water discharge (4) for the de-cationized water, a cathode (6) and a titanium anode (7). The device is equipped with a mechanism for the recovery of the exhausted ion-exchange resin with the cathode and the anode arranged in the first ion-exchange column respectively. A voltage is applied between the anode and the cathode. The device for the production of partially de-cationized water, comprises first ion-exchange column that is loaded with strongly anionic ion-exchange resin (5) for cations, an upstream water inlet (3) for the water to be de-cationized, a water discharge (4) for the de-cationized water, a cathode (6) and a titanium anode (7). The device is equipped with a mechanism for the recovery of the exhausted ion-exchange resin with the cathode and the anode arranged in the first ion-exchange column respectively. A voltage is applied between the anode and the cathode. The ion-exchange resin is arranged between the anode and the cathode. The anode possesses an iridium/rhodium mixed oxide coating. The first ion-exchange column is vertically arranged and the cathode and/or the anode represent(s) a filter respectively and a space, in which the anionic ion-exchange resin is present, encloses in the upstream and/or downstream direction. The ion-exchange resin rests upon the cathode that forms a supporting base for the anionic ion-exchange resin. The first and second ion-exchange columns are connected with one another. The first ion-exchange column is in the operating condition, during which the raw water is led through it and this raw water is de-cationized, while the second ion-exchange column is in a state of rest, during which no water flows through it. Both ion-exchange columns are operated in parallel manner. An ion-exchange column is in the operating condition, during which raw water is passed through it and the received de-cationized water is partly led as rinse water to the other ion-exchange column in the recovery condition. The second ion-exchange column is in the operating condition, during which raw water is passed through it and this raw water is de-cationized, while the first ion-exchange column is in a state of rest, during which no water flows through it. Another cathode is arranged downstream to the anode in the ion-exchange column, between both of which a voltage is applied. An independent claim is included for a procedure for partial de-cationization of water. |
