SU1286532A1 - Water demineralization plant - Google Patents

Abstract

The invention relates to devices for the electrochemical purification of natural and waste waters, can be used in the energy, chemical, metallurgical industries and reduces the regeneration time of the anode and cathode and increases the efficiency of desalting. The device is a body made of dielectric material, the cathode and the anode in the form of a porous thin-conducting mass with tokovods immersed in it, forming cassettes that are separated from each other by double partitions between which water flows, and have connections for draining water after the regeneration process. I zp f-ly, 2 ill. (L

Description

The invention relates to devices for the electrochemical purification of natural and waste waters and can be used in the energy, chemical, metallurgical and other industries.

The purpose of the invention is to increase the efficiency of desalting and regeneration of electrodes.

baffles 9. The polarity on the electrodes 4 and 5 is changed, the current-conducting I1 switch is closed and the drain stitches 12 are opened. The change of the whole on the electrodes contributes to the ion sorption and the removal of products from the housing I, then the working cycle repeats.

The positive effect is achieved

FIG. 1 shows the layout of the device due to the partition construction.

baffles 9. The polarity on electrodes 4 and 5 changes, the conductor override I1 closes and the drain stub 12 opens. A change in polarity on the electrodes promotes ion desorption and the removal of products from housing I, then the working cycle repeats.

The positive effect is achieved

a cut; FIG. 2 is a view along arrow A in FIG. one.

The device consists of a housing 1 made of a dielectric material, a nozzle 2 for supplying raw water and a nozzle 3 for dispensing desalinated water. Inside the case there are anodes 4 and cathodes 5, which are porous current-carrying mass 6, placed in the penetration of 1 "1e of the cassette 7. With current conductors 8, the cassettes are separated by double partitions 9 of a dielectric material, the second walls 10 flow) which are raised and form a gap with the bottom across the entire width of the body. The cassettes are connected to conductive jumpers 11, and at the bottom of each section there is a drain nipple 12. The anode and cathode sections, respectively, are connected to a DC source (not shown).

The device works as follows.

The water to be desalted is fed through pipe 2 into housing I, where under the action of an electric current from a direct current source, negatively charged ions are directed to the anode 4, and positively charged ions to the cathode 5. Water is filtered through permeable cassettes 7 with a porous conductive mass 6 and a current lead 8, passes from section to section through a double partition 9, the second wall 10 of which is raised and provides water filtration through the cassette from below. The proposed scheme provides the release of demineralized water at the outlet of nozzle 3. As the electrodes are saturated with salt ions, they are regenerated, which is performed in the following sequence: water supply to the housing 1 is stopped by closing the nozzle 2, the circuit 1drode breaks down due to dielectric ne

which, in addition to the function of dividing the case into sections, provide for the elimination of water through a cassette with a porous conducting mass from bottom to top, i.e. causes good conditions for liquid contact with a solid surface, connecting a porous electrically conductive mass to a DC source, which increases the capacitance (as an electroabsorbent) of an electrode, and increases the efficiency of the device, regenerating electrodes implanted with salt ions, by switching the polarity Due to the fact that the partitions are made of a dielectric material / (when the supply of source water is cut off), the electrical circuit is open once. The circuit is turned on through conductive jumpers, and since the electrode polarity is changed, desorption occurs in the liquid phase filling the sections, the desorbed products are removed through the open drain pipes, and the electrode regeneration process does not require demineralized water, and thus the performance of the water desalination device does not decrease. The output of desalinated water for household and drinking needs in the device is 2-3 times more than that of the prototype,

Claims (1)

1. A device for dehydrating water, including a housing with water inlet and outlet nozzles, with electrodes placed in a filler, characterized in that, in order to increase efficiency. desalting and ensuring the regeneration of electrodes, the electrodes are pairwise supplied with conductive bridges and the device is equipped with double dielectric partitions, one of which is fixed in the upper part of the body with a gap relative to the bottom of the body, and the other is fixed t a-fit -t4 (& h. - - /, - SHI & Oi -r / If-I cth d --- Yu-C. } { 12 FIG. one G2 fav 2