SU1634643A1 - Device for electrochemical treatment of liquid - Google Patents

Abstract

The invention relates to the ed-vp-chemical treatment of lidkistei, used, for example, as kiglogn regulation means, basic and oxidative-vapors of technological aqueous solutions. The purpose of the invention is to ensure the stability of the device and reduce the effect of electroosmotic overflow on electrode chambers. The device according to the invention relates to the electrochemical treatment of liquids, in particular, devices for the electrochemical treatment of liquids used, for example, as means of regulating the acid-base, redox properties of the process water solution. The purpose of the invention is to ensure the stability of the device by reducing the effect electroosmotic flow to the volume of fluid in the electrode chambers keeps the dielectric body with flat vertically mounted electric The electrodes and the diaphragm dividing the body into the anode and cathode electrode chambers and the DC source connected to the electrodes "New in the device is that the electrode chambers are interconnected by a channel whose entrance is located in the cathode chamber at its bottom, near the diaphragm, l out - in the anode chamber at the top edge of the electrode, in the channel at its ends there are gadget electrodes: the cathode at the entrance and the anode at the exit, connected. An additional DC source with a high voltage Sklee Channel, with the combined and anode chambers of the device-h, will maintain in both chambers a constant optimum for the operation of the device liquid level 1 tf, f-ly, 2 tab., I silt The drawing shows a schematic electrohydraulic device diagram. The device comprises a housing 1 made of a dielectric material, such as plexiglass. Flat electrodes are vertically mounted in case 1: cathode 2 and anode 3. Aperture 4 made of porous ceramic plate separates case 1 into cathode and anode (between diaphragm 4 and anode 3) chambers Cathode 2 and anode 3 of the device are connected to the corresponding terminals source 5 p esto nF (L oo 4 O 4 CO

Description

A channel 6 is made in the side wall of the device housing 1, which connects the lower part of the cathode chamber furthest from the electrode 2 with the upper part of the anode chamber located at the liquid level in close proximity to the ZS electrode. In channel 6, mesh are installed near the ends of the anode chamber. electrodes 7 and 8 connected to a direct current source 9 The negative pole of the current source 9 is connected to the grid electrode 7, the positive pole is connected to the 8 electrode. In addition, the negative pole of the current source 9 is connected to a positive nonvico M source togl,

The device works as follows,

The electrode chambers are filled with a liquid with low electrical conductivity, such as tap water, to the level of the channel outlet orifice and the anode chamber. Both DC sources are switched on. After the required electrical treatment time has elapsed, the current sources are turned off, the liquid (the water is drained separately from the L and anode chambers : i devices,. i

When operating a known device

if the liquid is an aqueous solution of inorganic electrolytes with low electrical conductivity, for example, water supply in / iaj, then during electrotreatment electroosmotic occurs, the cues flow of fluid from the anode chamber to the cathode chamber. sing to the chamber (p.popita) and to the deterioration of its physic; schmlch (l.1: n, n: r.t-1g groc.) The level of the katolptp at the same time rises and swollen, which occurs its overflow through the upper:; p iu diaphragm in the anode chamber. This is a deterioration of its parameter; i the fluid in the anode chamber of the lolite at the same time This is due to the difference in the level of the fluid P of the electrode zones. Decreasing the volume of the anolyte leads to a decrease in the cross section of the conducting medium between the electrodes, a decrease in the current, an increase in the voltage across the electrode 1 (in accordance with the law It) and the result electric blasting fluid to prevent electroosmotic flow for the device

five

0

five

0

five

0

five

0

five

They are soaked in calcium chloride calcium ionium solution to reduce the electrokinetic potential of the material of the diaphragm in the burrows and thus reduce the intensity of electroosmotic flow. After leaching calcium ions from the diaphragm with a low-conductivity treatment, the electro-treating electrophysical potential increases in the pores of the diaphragm. the flow of fluid during operation of the device from the anode chamber to the cathode, to the resumption of electroosmotic overflow.

During the operation of the proposed device, a channel that communicates the cathode and anode chambers of the device allows maintaining constant constant current level in both chambers (about 0.1% of the current in the anode circuit and the cathode circuit) 0 Net electrode at the entrance to the channel, it allows electrochemically neutralizing a part of highly active chemical compounds formed in the catholyte during the electrotreatment process, and to provide partial deactivation of the liquid flowing through the channel from the cathode chamber The anode grid electrode installed in the channel at its output is the anode with respect to the grid electrode at its input. This is due to the fact that the electrodes are connected to an additional current source whose voltage is higher than the voltage of the main current source that necessary for the flow of current between electrodes with a small surface (mesh) along a small section channel filled with a liquid with low electrical conductivity. The grid electrode at the exit of the channel serves to further deactivate the liquid coming from the cathode chamber to the anode one and neutralize cathodic electrochemical reaction products therein.

Table 2 shows the data of the prototype device, table 2 shows the test results of the proposed device. Test data were obtained by electrochemical treatment of tap water and aqueous solutions of chloride and gris prepared in

The concentration of soluble salts in the original tap water is 0.7 g / l, the redox potential (OBI) is +320 mV, pH 6.8 pH and ORP were measured with an I-120 ionomer using a reference silver chloride electrode. glass and platinum electrodes.

Claims (1)

From the data of the scoreboard and 2 it can be seen that with a slightly lower electric power consumption, the proposed device allows obtaining pH and VHV values of liquids on average 10-20% higher than those that can be achieved using prototype devices. 1 a A device for the electrochemical treatment of liquids containing a dielectric body divided by a diaphragm into an anode and cathode chambers with the corresponding 1 oh 1634643 anode and cathode connected to a direct current source, characterized in that, in order to ensure the stability of the device by reducing the effect of electroosmotic transfer on the volume of fluid in the chambers, the electrode chambers are connected by a flow-through channel bottom near the diaphragm, and the output is in the anode chamber at the upper edge of the electrode, and mesh electrodes are installed in the channel at its ends, which are connected to an additional DC source so that the net the electrode at the channel entrance is the cathode, and at the output is the anode, and the negative pole of the additional current source is connected to the positive pole of the main circuit. 2. The device according to rul, is characterized / in that the overflow channel 5 is made in the device case „ five 0 Spreadsheets Table Compiled by T „Barabash Editor M.Tsitkina Tehred L.OliynykKorrektor V0Girn k Zakae 730 Circulation 630 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 Production and Publishing Combine Patent, Uzhgorod, st. Gagarin, 101 Subscription