Benzene series wastewater treatment device

Abstract

The utility model relates to the field of wastewater degradation, and discloses a benzene series wastewater treatment device which comprises an electrolytic bath, a water inlet and a water outlet, an anionic membrane is arranged in the electrolytic bath and is used for dividing the electrolytic bath into a cathode chamber and an anode chamber; the water inlet and the water outlet are formed in the side wall of an anode chamber of the electrolytic bath, and the water outlet is formed above the water inlet; according to the utility model, the cathode chamber and the anode chamber of the electrolytic bath are separated by using the anionic membrane, so that hydrogen ions in the electrolytic bath are far away from the cathode plate and are prevented from being reduced and lost, thereby improving the degradation rate of benzene-series wastewater, and the top and the bottom of the anode chamber of the electrolytic bath are respectively provided with the water outlet and the water inlet, so that the degraded wastewater is discharged from the water outlet; wastewater to be degraded is supplemented from the water inlet, and the reaction can be continuously carried out.

Description

Technical Field

[0001] The utility model relates to the field of wastewater degradation, in particular to a benzene series wastewater treatment device. Background Art

[0002] The main source of pollution from benzene series comes from the petroleum and coking industries. In addition to direct production wastewater discharge, in the process of petroleum manufacturing, from exploration and mining to transportation and processing, there will inevitably be leakage in each link, which will enter natural water bodies through leakage, rainwater erosion, etc., causing environmental pollution. Because benzene series contain benzene ring structures, they are usually stable in nature and difficult to be biodegraded in nature. Although the pollution of benzene series has received considerable attention in relevant fields at home and abroad in recent years, its pollution status is still not to be underestimated.

[0003] At present, the commonly used treatment methods for benzene series include adsorption, flocculation precipitation, biological oxidation and chemical oxidation, but these treatment technologies have certain defects, such as low treatment efficiency, easy to cause secondary pollution and pollutant transfer. In recent years, the research and application of electrocatalytic oxidation technology has provided new technical methods for the degradation of organic matter in wastewater. However, in the traditional electrocatalytic oxidation method, there is no barrier between the cathode chamber and the anode chamber of the electrolytic cell. The benzene series wastewater that should be electrolyzed under acidic conditions will be reduced to gas and dissipated at the cathode as the reaction proceeds, resulting in low catalytic efficiency. Utility Model Content

[0004] The purpose of the utility model is to overcome the problem in the prior art that hydrogen ions are reduced and lost during the electrolysis of benzene-related wastewater, resulting in low catalytic efficiency, and to provide a benzene-related wastewater treatment device that can prevent hydrogen ions in the electrolytic cell from being reduced, thereby improving the degradation rate of the benzene-related wastewater.

[0005] In order to achieve the above object, the utility model provides a benzene series wastewater treatment device, comprising:

[0006] An electrolytic cell, wherein an anion membrane is disposed in the electrolytic cell, and the anion membrane is used to divide the electrolytic cell into a cathode chamber and an anode chamber; and

[0007] A water inlet and a water outlet are arranged on the side walls of the anode chamber of the electrolytic cell, and the water outlet is arranged above the water inlet.

[0008] Preferably, a fixing assembly is provided in the electrolytic cell for fixing the anion membrane.

[0009] Preferably, the fixing assembly comprises two partitions, the two partitions are respectively arranged on both sides of the anion membrane, and the two partitions are respectively provided with a No. 1 communication window.

[0010] Preferably, the electrolytic cell is configured as two separate cell bodies, and the two partitions are respectively connected integrally to the two cell bodies.

[0011] Preferably, the fixing assembly further comprises a gasket, and the gasket is respectively arranged between the two partitions and the anion membrane, and a second communication window is provided on the gasket.

[0012] Preferably, the first communication window and the second communication window overlap each other.

[0013] Preferably, the water inlet is connected to one end of a water inlet pipe, the other end of the water inlet pipe is connected to a raw liquid tank, and a peristaltic pump is provided on the water inlet pipe.

[0014] Preferably, the water outlet is connected to a waste liquid tank.

[0015] Preferably, liquid control valves are provided on both the water outlet and the water inlet.

[0016] Preferably, a limiting groove is provided on the inner wall of the electrolytic cell, and the limiting groove is used to stop and limit the cathode plate and the anode plate.

[0017] Through the above technical scheme, an anion membrane is used to separate the cathode chamber and the anode chamber of the electrolytic cell, so that the hydrogen ions in the electrolytic cell are kept away from the cathode plate to avoid being reduced and lost, thereby improving the degradation rate of benzene-related wastewater. The top and bottom of the anode chamber of the electrolytic cell are respectively provided with an outlet and an inlet, so that the degraded wastewater is discharged from the outlet and the degraded wastewater is replenished from the inlet, and the reaction can continue. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a benzene series wastewater treatment device provided by the utility model;

[0019] Figure 2 It is a schematic diagram of the fixing assembly provided by the utility model.

[0020] Description of Reference Numerals

[0021] 10. Electrolytic cell; 11. Partition; 12. AC window No. 1; 13. Limiting groove; 3. Anion membrane; 40. Gasket; 41. AC window No. 2; 51. Water outlet; 52. Water inlet; 53. Water outlet pipe; 54. Water inlet pipe; 55. Waste liquid tank; 56. Original liquid tank; 57. Liquid control valve; 6. Peristaltic pump. DETAILED DESCRIPTION

[0022] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0023] As mentioned above, the utility model provides a benzene series wastewater treatment device, which can achieve continuous degradation of benzene series wastewater while avoiding the loss of hydrogen ion reduction, thereby improving the degradation rate of benzene series wastewater.

[0024] like Figure 1 As shown, the benzene series wastewater treatment device comprises an electrolytic cell 10, a water inlet 52 and a water outlet 51. An anion membrane 3 is arranged in the electrolytic cell 10, and the anion membrane 3 is used to divide the electrolytic cell 10 into a cathode chamber and an anode chamber to block hydrogen ions from approaching the cathode plate; the water inlet 52 and the water outlet 51 are arranged on the side wall of the anode chamber of the electrolytic cell 10, and the water outlet 51 is arranged above the water inlet 52, so as to realize the replacement of the electrolyte in the electrolytic cell 10.

[0025] In the utility model, the current and voltage can be recorded by the power supply, hydrogen ions can improve the degradation rate and accelerate the reaction process, and the electrolytic cell 10 is divided into a cathode chamber and an anode chamber by using anion membrane 3. Since the anion membrane 3 has the characteristic of only allowing anions to pass through, the hydrogen ions and the cathode plate are separated, and the possibility of hydrogen ions contacting the cathode plate and being reduced and lost is avoided. Some salts, such as sodium chloride, are added to the electrolytic cell 10, and chloride ions enter the anode chamber through the anion membrane 3, which also promotes the oxidation reaction. By setting up a water outlet 51 and a water inlet 52 from high to low on the side wall of the anode chamber, the benzene series wastewater to be degraded is continuously transported to the bottom of the anode chamber, and the degraded wastewater is discharged from the water outlet 51, thereby realizing continuous reaction.

[0026] In the utility model, a fixing assembly is provided in the electrolytic cell 10 for fixing the anion membrane 3. Considering that the degradation of benzene series occurs in the anode chamber, the fixing assembly can be appropriately close to one end of the cathode chamber, that is, the anion membrane 3 is appropriately close to one end of the cathode chamber, to create a larger anode chamber, leaving more space for the oxidation reaction.

[0027] In the utility model, the fixing component includes two partitions 11, and the partitions 11 are respectively arranged on both sides of the anion membrane 3. The two partitions 11 are respectively provided with a No. 1 exchange window 12. The anion membrane 3 is soft and needs to be fixed by external force. The anion membrane 3 can be shaped by clamping the partitions 11 on both sides. The two partitions 11 are respectively provided with a No. 1 exchange window 12, so that anions can flow between the cathode chamber and the anode chamber.

[0028] In the utility model, the electrolytic cell 10 is configured as two separate cell bodies, and the two partitions 11 are respectively connected to the two cell bodies in an integral manner to prevent liquid from leaking out of the electrolytic cell 10 or flowing between the cathode chamber and the anode chamber through the partitions 11, while simplifying the assembly of the fixed components and facilitating the installation of the gasket 40. The partition 11 extends out of the electrolytic cell 10 to set a connection and fixing point with the gasket 40. The two gaskets 40 clamp the anion membrane 3, and the two partitions 11 clamp the two gaskets 40. The partition 11, the gasket 40 and the anion membrane 3 are fixed together through the connection and fixing points on the partition 11.

[0029] like Figure 2 As shown, in the utility model, the fixing component also includes a gasket 40, and the gasket 40 is respectively arranged between the two partitions 11 and the anion membrane 3. A No. 2 exchange window 41 is opened on the gasket 40. The gasket 40 has ductility. The gasket 40 is arranged between the partition 11 and the anion membrane 3, which can effectively prevent the liquid from flowing out from the gap between the partition 11 and the anion membrane 3. A No. 2 exchange window 41 is opened on the gasket 40 to leave a passage for anions.

[0030] In the present invention, the first AC window 12 and the second AC window 41 overlap each other, so that anions can flow between the cathode chamber and the anode chamber.

[0031] In the utility model, the water inlet 52 is connected to one end of the water inlet pipe 54, and the other end of the water inlet pipe 54 is connected to the raw liquid cylinder 56. A peristaltic pump 6 is arranged on the water inlet pipe 54. Under the action of the peristaltic pump 6, the benzene series wastewater to be degraded enters the anode chamber of the electrolytic cell 10 from the raw liquid cylinder 56 through the water inlet pipe 54 and the water inlet 52 for reaction. In the electrolytic cell 10, the chloride ions in the cathode chamber can enter the anode chamber through the anion membrane 3, and the chloride ions promote the oxidation of benzene series.

[0032] In the utility model, the water outlet 51 is connected to the waste liquid tank 55 through the water outlet pipe 53, and the benzene series wastewater to be degraded is continuously input into the electrolytic cell 10 from the water inlet 52 below. The degraded wastewater is squeezed to the top and can enter the waste liquid tank 55 through the water outlet 51 and the water outlet pipe 53. The liquid in the waste liquid tank 55 can be sampled at any time to measure various required values, such as conductivity, pH, temperature, benzene series concentration, etc., which is very convenient.

[0033] In the present invention, in order to more conveniently and quickly control the progress of the reaction, a liquid control valve 57 is provided on both the water outlet 51 and the water inlet 52 .

[0034] In the utility model, a limiting groove 13 is provided on the inner wall of the electrolytic cell 10, and the limiting groove 13 is used to stop and limit the cathode plate and the anode plate to prevent the cathode plate or the anode plate from tilting and causing the wire to contact the electrolyte and be corroded.

[0035] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A benzene series wastewater treatment device, It is characterized in that include: An electrolytic cell (10), wherein an anion membrane (3) is arranged in the electrolytic cell (10), and the anion membrane (3) is used to divide the electrolytic cell (10) into a cathode chamber and an anode chamber; and a water inlet (52) and a water outlet (51), wherein the water inlet (52) and the water outlet (51) are arranged on the side wall of the anode chamber of the electrolytic cell (10), and the water outlet (51) is arranged above the water inlet (52); A fixing component is provided in the electrolytic cell (10) for fixing the anion membrane (3); The fixing assembly comprises two partitions (11), the two partitions (11) are respectively arranged on both sides of the anion membrane (3), and the two partitions (11) are respectively provided with a first communication window (12); The electrolytic cell (10) is configured as two separate cell bodies, and the two partitions (11) are respectively connected to the two cell bodies in an integral manner.

2. The benzene series wastewater treatment device according to claim 1, Features: The fixing assembly further comprises a gasket (40), wherein the gasket (40) is respectively arranged between the two partitions (11) and the anion membrane (3), and a second communication window (41) is provided on the gasket (40).

3. The benzene series wastewater treatment device according to claim 2, Features: The first AC window (12) and the second AC window (41) overlap each other.

4. The benzene series wastewater treatment device according to claim 1, Features: The water inlet (52) is connected to one end of a water inlet pipe (54), the other end of the water inlet pipe (54) is connected to a raw liquid tank (56), and a peristaltic pump (6) is provided on the water inlet pipe (54).

5. The benzene series wastewater treatment device according to claim 1, Features: The water outlet (51) is connected to the waste liquid tank (55).

6. The benzene series wastewater treatment device according to claim 5, Features: The water outlet (51) and the water inlet (52) are both provided with a liquid control valve (57).

7. The benzene series wastewater treatment device according to claim 1, Features: A limiting groove (13) is provided on the inner wall of the electrolytic cell (10), and the limiting groove (13) is used to stop and limit the cathode plate and the anode plate.

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