Three-dimensional electrocatalytic oxidation wastewater treatment device
By adding particle electrodes to the industrial wastewater treatment device and using three-dimensional electrocatalytic technology, the problems of large land occupation, high cost and poor treatment effect in the existing technology are solved, and efficient and low-cost treatment of industrial wastewater is achieved.
Patent Information
- Application Number
- CN202420527334.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-19
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-03-19
AI Technical Summary
Existing industrial wastewater treatment technologies such as the Fenton method have problems such as the problem of large area, high operating costs and limited treatment effects, and it is difficult to apply industrial wastewater with complex components.
A three-dimensional electrocatalytic oxidation wastewater treatment device is adopted. This device increases the conductivity and contact area by adding particle electrodes to the reaction tank, and uses the electrode plate and power supply to perform electrocatalytic treatment to degrade and remove organic matter in the wastewater.
It realizes low-cost, modular and harmless treatment of industrial wastewater, improves oxidation efficiency, reduces energy consumption costs, simplifies the equipment structure, and saves space.
Smart Images
Figure CN222631218U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of industrial organic wastewater treatment, and particularly relates to a three-dimensional electrocatalytic oxidation wastewater treatment device. Background Art
[0002] Industrial wastewater refers to wastewater and waste liquid generated in the industrial production process, mainly including production wastewater, production sewage and cooling water, which contain industrial raw materials, intermediate products, by-products and pollutants generated in the production process.
[0003] Industrial wastewater is of many types, with complex components and is difficult to treat. Biochemical treatment methods are often not suitable. Advanced oxidation technologies such as the Fenton process face problems such as large footprint, high operating costs and limited treatment effects.
[0004] Electrocatalytic technology has attracted wide attention due to its advantages such as small footprint, simple operation, no need for external electrolytes, and no secondary pollution. Among them, three-dimensional electrocatalytic technology adds particle electrodes to two-dimensional electrocatalysis, which improves catalytic oxidation efficiency and reduces energy consumption costs, and has good application prospects. Utility Model Content
[0005] In view of the existing technical problems, the utility model provides a three-dimensional electrocatalytic oxidation wastewater treatment device. After adding particle electrodes, the conductivity is increased, the contact area with wastewater is increased, and the oxidation efficiency is improved. It can replace traditional advanced oxidation technologies such as Fenton and realize low-cost, modular and harmless treatment of industrial wastewater.
[0006] The technical solution of this utility model is as follows:
[0007] A three-dimensional electrocatalytic oxidation wastewater treatment device comprises a water inlet pipe, a filter, a water distribution head, a load-bearing plate, a polar plate, a power supply, a reaction tank, an overflow tank, a water outlet tank, a water outlet pipe, a spray reflux pump and a spray reflux device.
[0008] The water inlet pipe is connected to the reaction tank, the filter is installed in the middle section of the water inlet pipe, the load-bearing plate is installed at the bottom of the reaction tank, the part of the water inlet pipe located inside the reaction tank is connected to a plurality of water distribution heads, and the water distribution heads are installed in the reaction tank through the load-bearing plate; the electrode plates are installed above the water distribution heads in the reaction tank, including anode plates and cathode plates, the positive pole of the power supply is connected to the anode plate of the electrode plate, and the negative pole of the power supply is connected to the cathode plate of the electrode plate; an overflow tank is arranged at the top edge of the reaction tank, a water outlet tank is arranged at the bottom of the reaction tank, the water outlet tank is arranged with a water outlet pipe, a spray reflux device is arranged above the top of the reaction tank, and the spray reflux device is connected to the water outlet tank through a spray reflux pump; the reaction tank is filled with fillers for wastewater treatment.
[0009] Preferably, the reaction tank comprises a supporting silo and a reaction silo, the reaction silo is stacked on the supporting silo, the supporting silo is mounted on the load-bearing plate, a supporting filler is placed in the supporting silo, and a reaction filler is placed in the reaction silo.
[0010] More preferably, the height of the supporting silo is 1 / 10 to 1 / 5 of the height of the reaction tank, and the supporting silo can prevent the particle electrode in the reaction tank from blocking the water distributor at the bottom, prevent the water from flowing sideways, and can evenly distribute the water. The height of the reaction silo is 7 / 10 to 4 / 5 of the height of the reaction tank, and the highest volume of the particle electrode added to the reaction tank is 4 / 5 of the reaction tank to prevent the particle electrode material from being washed out when the water inflow is too large.
[0011] More preferably, the supporting filler is a 4-7 mm high-performance aluminum-based microporous material, which is an alumina substrate coated with one or both of zinc or cobalt. The filler will play the role of supporting the reaction filler and oxidizing and removing organic matter.
[0012] More preferably, the reaction filler is a 3-5 mm high-performance aluminum-based microporous material, which is an aluminum oxide substrate coated with one or both of zinc or cobalt. The filler will play a role in oxidizing and removing organic matter.
[0013] Preferably, the anode plates and cathode plates are alternately arranged in the reaction tank parallel to the load-bearing plate. The plates are arranged horizontally, and water flows in from the bottom and out from the top, which can more effectively contact the plates and particle electrodes, and the contact area is larger.
[0014] Preferably, the anode plate is a titanium-based mesh plate with ruthenium, iridium and titanium coated on the surface.
[0015] Preferably, the cathode plate is a pure titanium mesh plate.
[0016] When the device of the utility model is working, the wastewater slowly flows into the reaction tank through the water distribution head on the water inlet pipe to ensure that the system has sufficient time to treat the wastewater. Then when the wastewater flows through the supporting silo and the reaction silo, the plate is powered by the power supply, and the plate acts on the supporting filler and the reaction filler through the anode plate and the cathode plate to produce an electrocatalytic effect, effectively degrading and removing organic matter in the wastewater. The treated wastewater overflows from the top of the reaction tank to the overflow tank, and then is discharged through the outlet tank and the outlet pipe. At the same time, the spray reflux device sprays part of the water in the outlet tank to the reaction tank through the spray reflux pump, realizing spray defoaming and reflux.
[0017] The pole plates of the utility model equipment adopt mesh pole plates, which are alternately distributed in the reaction tank parallel to the load-bearing plate. The mesh structure has good water permeability, ensuring that the wastewater passes through the pole plates stably and evenly, effectively avoiding the short-flow phenomenon of wastewater in the reaction tank. The mesh structure also increases the contact area and time between the pole plates and the wastewater, improves the current density, makes the reaction more complete and thorough, and improves the oxidation removal effect of organic matter. In addition, the mesh structure also greatly reduces the weight of the pole plates, which is convenient for transportation and disassembly and assembly, and also saves costs.
[0018] The utility model combines sewage return and spraying defoaming, arranges a spraying return pump at the outlet tank, and connects with the spraying return device through a water pipe, thus realizing sewage return while spraying defoaming, simplifying the equipment and saving space. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a schematic diagram of the structure of the three-dimensional electrocatalytic oxidation wastewater treatment device of the utility model;
[0020] In the figure: 1 is the water inlet pipe, 2 is the filter, 3 is the water distribution head, 4 is the load-bearing plate, 5 is the electrode plate, 5-1 is the anode plate, 5-2 is the cathode plate, 6 is the power supply, 7 is the reaction tank, 8 is the supporting silo, 9 is the reaction silo, 10 is the overflow trough, 11 is the water outlet trough, 12 is the water outlet pipe, 13 is the spray reflux pump, and 14 is the spray reflux device. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the present utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments.
[0022] A three-dimensional electrocatalytic oxidation wastewater treatment device, such as Figure 1 As shown, the device includes a water inlet pipe 1, a filter 2, a water distribution head 3, a bearing plate 4, a plate 5, a power supply 6, a reaction tank 7, a supporting silo 8, a reaction silo 9, an overflow tank 10, a water outlet tank 11, a water outlet pipe 12, a spray reflux pump 13 and a spray reflux device 14.
[0023] The water inlet pipe 1 is connected to the reaction tank 7, the filter 2 is installed in the middle section of the water inlet pipe 1, the bearing plate 4 is installed at the bottom of the reaction tank 7, and the part of the water inlet pipe 1 located inside the reaction tank 7 is connected to a plurality of water distribution heads 3, which pass through the bearing plate and are installed in the reaction tank 7; the plate 5 is installed above the water distribution head 3 in the reaction tank 7, including an anode plate 5-1 and a cathode plate 5-2, which are alternately distributed in the reaction tank 7 parallel to the bearing plate 4, the positive pole of the power supply 6 is connected to the anode plate 5-1 of the plate 5, and the negative pole of the power supply 6 is connected to the cathode plate 5-2 of the plate 5; an overflow groove 10 is arranged at the top edge of the reaction tank 7, a water outlet groove 11 is arranged at the bottom of the reaction tank 7, the water outlet groove 11 is provided with a water outlet pipe 12, a spray reflux device 14 is arranged above the top of the reaction tank 7, and the spray reflux device 14 is connected to the water outlet groove 11 through a spray reflux pump 13; the reaction tank 7 is filled with fillers for wastewater treatment.
[0024] Specifically, in this embodiment, the reaction tank 7 includes a supporting silo 8 and a reaction silo 9, the reaction silo 9 is stacked on the supporting silo 8, and the supporting silo 8 is installed on the bearing plate 4. The supporting silo 8 is filled with supporting fillers, and the reaction silo 9 is filled with reaction fillers.
[0025] More specifically, in this embodiment, the height of the supporting silo 8 is 1 / 10 to 1 / 5 of the height of the reaction tank 7 ; the height of the reaction silo 9 is 7 / 10 to 4 / 5 of the height of the reaction tank 7 .
[0026] The spray reflux device 14 is connected to the water outlet tank 11 through the spray reflux pump 13. This part of the arrangement can realize spray defoaming and reflux.
[0027] The power supply 6 is a pulsed DC power supply. The anode plate 5-1 and the cathode plate 5-2 are alternately arranged in a horizontal distribution. The plates are arranged horizontally, and water flows in from the bottom and out from the top, which can more effectively contact the plates and the particle electrodes, and the contact area is larger. The anode plate 5-1 is a titanium-based mesh plate with ruthenium, iridium and titanium coated on the surface, and the cathode plate 5-2 is a pure titanium mesh plate.
[0028] In the above embodiment, the supporting filler is a 4-7 mm high-performance aluminum-based microporous material. Specifically, the 4-7 mm high-performance aluminum-based microporous material is an alumina substrate coated with one or both of zinc or cobalt. The filler will play the role of supporting the reaction filler and oxidizing and removing organic matter.
[0029] In the above embodiment, the reaction filler is a 3-5 mm high-performance aluminum-based microporous material. Specifically, the 3-5 mm high-performance aluminum-based microporous material is an aluminum oxide substrate coated with one or both of zinc or cobalt. The filler will play a role in oxidizing and removing organic matter.
[0030] In the above embodiment,
[0031] When the device of this embodiment is working, the wastewater slowly flows into the reaction tank 7 through the water distribution head 3 on the water inlet pipe 1 to ensure that the system has sufficient time to treat the wastewater. Then when the wastewater flows through the supporting silo 8 and the reaction silo 9, the plate 5 is powered by the power supply 6, and the plate 5 acts on the supporting filler and the reaction filler through the anode plate 5-1 and the cathode plate 5-2 to produce an electrocatalytic effect, effectively degrading and removing organic matter in the wastewater, and the treated wastewater overflows from the top of the reaction tank 7 to the overflow tank 10, and then is discharged through the outlet tank 11 and the outlet pipe 12. At the same time, the spray reflux device 14 sprays part of the water in the outlet tank 11 to the reaction tank 7 through the spray reflux pump 13, so as to achieve spray defoaming and reflux.
[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A three-dimensional electrocatalytic oxidation wastewater treatment device, characterized in that: The device comprises a water inlet pipe (1), a filter (2), a water distribution head (3), a bearing plate (4), an electrode plate (5), a power source (6), a reaction tank (7), an overflow tank (10), a water outlet tank (11), a water outlet pipe (12), a spray return pump (13) and a spray return device (14); wherein the water inlet pipe (1) is connected to the reaction tank (7), the filter (2) is installed in the middle section of the water inlet pipe (1), the bearing plate (4) is installed at the bottom of the reaction tank (7), the part of the water inlet pipe (1) located inside the reaction tank (7) is connected to a plurality of water distribution heads (3), and the water distribution heads (3) pass through the bearing plate and are installed in the reaction tank (7); the electrode plate (5) is installed Above the water head (3) in the reaction tank (7), an anode plate (5-1) and a cathode plate (5-2) are provided. The positive electrode of the power source (6) is connected to the anode plate (5-1) of the electrode plate (5), and the negative electrode of the power source (6) is connected to the cathode plate (5-2) of the electrode plate (5). An overflow tank (10) is provided at the top edge of the reaction tank (7), a water outlet tank (11) is provided at the bottom of the reaction tank (7), and a water outlet pipe (12) is provided in the water outlet tank (11). A spray reflux device (14) is provided above the top of the reaction tank (7), and the spray reflux device (14) is connected to the water outlet tank (11) via a spray reflux pump (13). The reaction tank (7) is filled with filler for wastewater treatment.
2. A three-dimensional electrocatalytic oxidation wastewater treatment device according to claim 1, characterized in that: The anode plates (5-1) and cathode plates (5-2) are alternately distributed in the reaction tank (7) parallel to the load-bearing plate.
3. A three-dimensional electrocatalytic oxidation wastewater treatment device according to claim 1, characterized in that: The anode plate (5-1) is a titanium-based mesh plate with ruthenium, iridium and titanium coated on the surface.
4. A three-dimensional electrocatalytic oxidation wastewater treatment device according to claim 1, characterized in that: The cathode plate (5-2) is a pure titanium mesh plate.
5. A three-dimensional electrocatalytic oxidation wastewater treatment device according to claim 1, characterized in that: The reaction tank (7) comprises a supporting silo (8) and a reaction silo (9), wherein the reaction silo (9) is stacked on top of the supporting silo (8), and the supporting silo (8) is mounted on a load-bearing plate (4); a supporting filler is placed in the supporting silo (8), and a reaction filler is placed in the reaction silo (9).
6. A three-dimensional electrocatalytic oxidation wastewater treatment device according to claim 5, characterized in that: The height of the supporting silo (8) is 1 / 10 to 1 / 5 of the height of the reaction tank (7).
7. A three-dimensional electrocatalytic oxidation wastewater treatment device according to claim 5, characterized in that: The height of the reaction silo (9) is 7 / 10 to 4 / 5 of the height of the reaction tank (7).
8. A three-dimensional electrocatalytic oxidation wastewater treatment device according to claim 5, characterized in that: The supporting filler is a 4-7 mm high-performance aluminum-based microporous material.
9. A three-dimensional electrocatalytic oxidation wastewater treatment device according to claim 5, characterized in that: The reaction filler is a 3-5 mm high-performance aluminum-based microporous material.