SU1411287A1 - Electrolyzer - Google Patents

Abstract

The invention relates to equipment for the electrochemical treatment of wastewater containing heavy metal ions, and can be used to treat effluent pickling sites of metalworking enterprises; The aim of the invention is to increase the service life of the electrodes of the electrolyzer comprising a housing with graphite electrodes installed in it. On g, graphite electrodes are wound with salt ", but noids, whose turns are laid with a gap of 4 - 7 mm. Solenoids are connected to a direct current source. A current of 10 A is applied to the solenoids. The current density in the electrolyzer is 150 A / m. With the help of an electrolyzer containing electrodes in the solenoids, the waste water is cleaned, containing - Hf / l: 0.01, 1.0, 1.0, Pb to 0.09; 0,001. 1 hp f-ly, 1 ill., 2 tab. (L

Description

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The invention relates to equipment for the electrochemical treatment of wastewater containing ions of metal ions and can be used for the treatment of effluent pickling sites of metalworking enterprises.

The aim of the invention is to increase the service life of the electrodes,

The drawing schematically shows an electrolyzer.

The cell contains a housing 1 with graphite installed in it

lenoids, and the body itself is placed in a solenoid. To determine the degree of damage, the electrodes used are periodically removed and weighed. The energy consumption for the known and proposed electrolyzers is maintained equal. To determine the optimal clearance between the turns of the solenoids, several sets of electrodes with different values of a definable size are made and each set is tested.

Electrode Test Results

Electrodes 2, On graphite electro-jg for destruction are summarized in Table 1;

For 2, solenoids 3 are wound, the turns of which are laid with a gap. Through K.iiet-iM 4 and 5, solenoids 3 are connected to a direct current source (not shown). The electrodes 2 are connected to a current source (not shown) by means of 6 and 7.

The electrolyzer works as follows

In the housing 1 serves the treated fluid - wastewater. On the electrodes 2 through the terminals 6 and 7 serves an electric, tric current. Through terminals 4 and 5, the current is supplied to solenoids, e 3.

Conduct a series of experiments. Waste zodes are used for research. Experiments were performed on a flow cell. Size molded from carbon in the form of plates of electrodes 300 x 500 to 5 mm. The current applied to the solenoids is 10 A. The resistance of each of the solenoids is Oh. The cross section of the wire which is wound coils of solenoids 1 7 mm. The material is aluminum, insulation is polyvinyl chloride. The current density of the electrolyzer is 150 A / m. The effluent for each experiment is selected under equal conditions and the chemical composition is the same.

Comparison of the wire tr placed in the body of the electrolyzer electrodes without co.

20

25

thirty

35

40

45

the effect of the size of the gap between the turns of the solenoid on the degree of purification of wastewaters is given in Table. 2

As can be seen from the table. 1, the degree of electrode rupture when using solenoids wound directly on the electrodes with a gap of not more than 7 mm decreases for a whole, therefore the service life of the electro increases. With a gap greater than 7, the electrode is again destroyed. From tab. 2, it is clear that the gap between the turns of the solenoid of less than 4 m is unacceptable from the point of view of the degree of wastewater treatment. Thus, from table. 1 and 2, the optimum is a gap of 4 to 7 mm.

Claims (2)

An electrolyzer containing co with graphite electrodes installed in it and an electromagnetic field source, characterized in that, in order to increase the service life of electrodes 5, the source of the electric magnetic field is designed as solenoids on the electrodes of solenoids, the turns of which are arranged with a gap. 2. The electrolyzer according to claim 1, wherein the gap between the turns is 4-7 mm. 0 five 0 five 0 five the effect of the size of the gap between the turns of the solenoid on the degree of wastewater treatment is given in Table. 2 As can be seen from the table. 1, the degree of destruction of the electrodes when using solenoids wound directly on the electrodes with a gap of no more than 7 mm is reduced by a whole, and hence the service life of the electrodes increases. With a gap greater than 7 mm, the electrode is again destroyed. From tab. 2 that the gap between the turns of the solenoid less than 4 mm is unacceptable from the point of view of the degree of wastewater treatment. Thus, from table. 1 and 2, it follows that a gap of 4 to 7 mm is optimal. Invention Formula An electrolyzer comprising a housing with graphite electrodes installed therein and an electromagnetic field source, characterized in that, in order to increase the service life of the electrodes 5, the electromagnetic field source is made in the form of electrodes wound solenoids, the turns of which are arranged with a gap. 2. The electrolyzer according to claim 1, wherein the gap between the turns is 4-7 mm. Experimental conditions Reducing the weight of the electrodes, g, during the supply work, h 20 1 30 I 40 I 50 I 60 j 70 Г 80 I 90 100 i Ij Lj..L .., „„.,. 1. Electrodes without solenoids 0.09 0.10 0.16 0.19 3.30 3.30 4, .70 5JC 0.01  Oj02 0.02 0.03 0.01 0.01 0.03 0.03 0.05 0.07 0.09 0.1 0.1 0.9 0 ,. 0.05-1.9 0.01-1.3 0.01-1.0 0.02-1.0 ,one 0.01-1.1 0.01-1.1 Composition of the original stock 170.0- 445.0-720.0 60.0-370.0 0.18-2.3 -230.0 Table 800 Ruin the nuts 0.03 Oj03 0.03 Oft Or9 KZ 1.5 2.1 Of 2 ,. ABOUT Tab .-- W; c a 1H - 1100