Novel multi-electrode electrolytic bath

Abstract

The utility model provides a novel multi-electrode electrolytic bath, which relates to the technical field of sewage treatment and comprises a device body, a power supply arranged at the top of the device body, a first cathode plate arranged inside the device body, a first anode plate arranged at the top of the first cathode plate and a second cathode plate arranged at the top of the first anode plate, the top of one side of the device body is provided with a water outlet, the two sides of the device body are provided with conductive columns, the bottom of the device body is provided with a water inlet, and one side of the water inlet is provided with an oxygen inlet. A single power supply is adopted to realize the control of a multi-group electrode system, the Fenton oxidation reaction can be realized without independently adding Fe < 2 + > and additionally adding H2O2, and the control of the multi-group electrode system can be realized only by one power supply, so that the mass transfer effect of wastewater in the system is effectively improved, and organic pollutants in the wastewater can be fully oxidized and decomposed among polar plates.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a novel multi-electrode electrolytic cell. Background Technology

[0002] According to Chinese Patent No. CN103205775A, a horizontally charged aluminum electrolytic cell electrode is composed of multiple electrode units, all of which have the same structure. Each electrode unit includes a conductive rod composed of a conductive rod and a conductive claw, and an electrode block connected to the conductive rod. The electrode units are arranged horizontally in the electrolytic cell and suspended in the electrolytic cell by the conductive rod. The conductive surfaces of the electrode blocks are all parallel to each other. There is a liquid electrolyte layer between two adjacent electrode units. The two electrode units at both ends of the electrode are connected to the anode bus and the cathode bus, respectively.

[0003] The aforementioned comparative documents and existing technologies have the following technical problems: Existing landfill leachate is a typical type of recalcitrant organic wastewater. With increasingly stringent discharge standards, the requirements for related treatment technologies are also becoming more stringent. Landfill leachate usually contains a large amount of toxic and difficult-to-biodegrade substances such as phenols and esters. In order to achieve higher discharge standards, membrane treatment processes are usually selected for deep treatment. However, wastewater with high concentrations of organic pollutants is not suitable for direct use of membrane processes (it is easy to reduce the service life of the membrane). In addition, membrane processes have high investment and operating costs. Therefore, there is an urgent need to develop a low-cost organic pollutant removal process or device with good treatment effect. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a novel multi-electrode electrolytic cell.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a novel multi-electrode electrolytic cell, comprising a device body, a power supply at the top of the device body, a first cathode plate inside the device body, a first anode plate at the top of the first cathode plate, a second cathode plate at the top of the first anode plate, a second anode plate at the top of the second cathode plate, electrode slots at both ends of the second anode plate, a water outlet at the top of one side of the device body, conductive posts on both sides of the device body, a water inlet at the bottom of the device body, and an oxygen inlet on one side of the water inlet.

[0006] Preferably, a cathode wire is provided on one side of the power supply, and an anode wire is provided on the other side of the power supply.

[0007] Preferably, both the cathode wire and the anode wire are connected to the conductive post.

[0008] Preferably, the surface of the first cathode plate is provided with electrode plate flow holes, and the surfaces of the first anode plate, the second cathode plate, and the second anode plate are all provided with electrode plate flow holes.

[0009] Preferably, the first cathode plate, the first anode plate, the second cathode plate, and the second anode plate form a set of electrode systems, and the device body is provided with multiple sets of electrode systems inside.

[0010] Preferably, both ends of the first cathode plate, both ends of the first anode plate, both ends of the second cathode plate, and both ends of the second anode plate are provided with plate slots, and the plate slots are connected to the inner wall of the device body.

[0011] Preferably, the device body is connected to the water outlet, the water inlet, and the oxygen inlet.

[0012] Beneficial effects

[0013] In this invention, a single power supply is used to control multiple electrode systems. Fenton oxidation reaction can be achieved without the need to add Fe2+ separately or H2O2. Multiple electrode systems can be controlled with just one power supply, which effectively improves the mass transfer of wastewater in the system. Organic pollutants in wastewater can be fully oxidized and decomposed between the electrodes. Attached Figure Description

[0014] Figure 1 This is a top view of the present invention;

[0015] Figure 2 This is a cross-sectional view of the present invention;

[0016] Figure 3 This is a schematic diagram of the electrode plate opening of this utility model.

[0017] Legend:

[0018] 1. Device body; 2. Power supply; 201. Cathode wire; 202. Anode wire; 3. First cathode plate; 301. Electrode plate flow hole; 4. First anode plate; 5. Second cathode plate; 6. Second anode plate; 7. Plate slot; 8. Water outlet; 9. Conductive column; 10. Water inlet; 11. Oxygen inlet. Detailed Implementation

[0019] To make the technical means, creative features, and achieved objectives and effects of this utility model easier to understand, the present utility model is further described below with reference to specific embodiments and accompanying drawings. However, the following embodiments are merely preferred embodiments of this utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described in the implementation plan without creative effort are all within the protection scope of this utility model.

[0020] The specific embodiments of this utility model are described below with reference to the accompanying drawings. Specific Implementation Example 1:

[0022] Reference Figure 1-3 This utility model provides a novel multi-electrode electrolytic cell, including a device body 1. A power supply 2 is located on the top of the device body 1. A cathode wire 201 is located on one side of the power supply 2, and an anode wire 202 is located on the other side of the power supply 2. A first cathode plate 3 is located inside the device body 1. An electrode plate flow hole 301 is provided on the surface of the first cathode plate 3. A first anode plate 4 is located on top of the first cathode plate 3. A second cathode plate 5 is located on top of the first anode plate 4. A second anode plate 6 is located on top of the second cathode plate 5. Electrode plate flow holes 301 are provided on the surface of the first cathode plate 4, the surface of the second cathode plate 5, and the surface of the second anode plate 6. The first cathode plate 3, the first anode plate 4, the second cathode plate 5, and the second anode plate 6 form a set of electrode systems. Multiple sets of electrode systems are provided inside the device body 1. Electrode plate slots 7 are provided at both ends of the second anode plate 6. Electrode plate slots 7 are also provided at both ends of the first cathode plate 3, the first anode plate 4, the second cathode plate 5, and the second anode plate 6. The electrode plate slots 7 are connected to the device body. The inner wall of the device body 1 is connected. An outlet 8 is located at the top of one side of the device body 1. Conductive columns 9 are located on both sides of the device body 1. Cathode wire 201 and anode wire 202 are both connected to the conductive columns 9. An inlet 10 is located at the bottom of the device body 1. An oxygen inlet 11 is located on one side of the inlet 10. The device body 1 is connected to the outlet 8, the inlet 10, and the oxygen inlet 11. The operation process is as follows: First, landfill leachate wastewater enters the device through the inlet 10 and is introduced into the device through the oxygen inlet 11. Oxygen is electrolyzed at the first cathode to produce H2O2. Under the influence of the electric field between the first cathode and the second anode, the first anode iron forms an induced current, which causes the first anode iron to precipitate and produce Fe2+. Then, the H2O2 produced at the first cathode reacts with the Fe2+ produced at the first anode to generate ·OH and Fe3+, which have strong oxidizing properties. When the wastewater passes through the flow holes of the electrode plate, it is directly oxidized and decomposed by ·OH, so as to remove organic pollutants. The Fe3+ produced in the reaction process is reduced to Fe2+ at the second cathode and continues to participate in the reaction. Specific Implementation Example 2:

[0024] Reference Figure 1 The distance between the electrode slots 7 inside the device is equally divided. The distance between the electrodes can be adjusted by adjusting the up and down positions of the electrodes, thereby achieving the purpose of strengthening or weakening the electric field.

[0025] In summary:

[0026] 1. By adopting the relevant technical principles of electro-Fenton, the control of multiple electrode systems can be achieved through a single power source 2. At the same time, there is no need to add ferrous iron. Fe2+ is deposited by the anode plate (iron) itself, and then reacts with hydrogen peroxide to produce ·OH and Fe3+, which are used to oxidize and remove organic pollutants. Hydrogen peroxide also does not need to be added separately. It is generated by electrolysis by introducing oxygen into the reaction system. The Fe3+ produced during the reaction can be reduced to Fe2+ at the cathode to continue to participate in the reaction.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A novel multi-electrode electrolytic cell, comprising a device body (1), characterized in that: The device body (1) has a power supply (2) on top, a first cathode plate (3) inside, a first anode plate (4) on top of the first cathode plate (3), a second cathode plate (5) on top of the first anode plate (4), a second anode plate (6) on top of the second cathode plate (5), and plate slots (7) at both ends of the second anode plate (6). The device body (1) has a water outlet (8) on one side of the top, conductive posts (9) on both sides, a water inlet (10) at the bottom, and an oxygen inlet (11) on one side of the water inlet (10).

2. The novel multi-electrode electrolytic cell according to claim 1, characterized in that: A cathode wire (201) is provided on one side of the power supply (2), and an anode wire (202) is provided on the other side of the power supply (2).

3. The novel multi-electrode electrolytic cell according to claim 2, characterized in that: Both the cathode wire (201) and the anode wire (202) are connected to the conductive post (9).

4. A novel multi-electrode electrolytic cell according to claim 1, characterized in that: The surface of the first cathode plate (3) is provided with electrode plate flow holes (301), and the surface of the first anode plate (4), the surface of the second cathode plate (5), and the surface of the second anode plate (6) are all provided with electrode plate flow holes (301).

5. A novel multi-electrode electrolytic cell according to claim 4, characterized in that: The first cathode plate (3), the first anode plate (4), the second cathode plate (5), and the second anode plate (6) form an electrode system, and the device body (1) is provided with multiple electrode systems inside.

6. A novel multi-electrode electrolytic cell according to claim 1, characterized in that: Both ends of the first cathode plate (3), both ends of the first anode plate (4), both ends of the second cathode plate (5), and both ends of the second anode plate (6) are provided with plate slots (7), and the plate slots (7) are connected to the inner wall of the device body (1).

7. A novel multi-electrode electrolytic cell according to claim 1, characterized in that: The device body (1) is connected to the water outlet (8), the device body (1) to the water inlet (10), and the device body (1) to the oxygen inlet (11).

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