Multi-dimensional electrolytic catalytic oxidation water treatment device
Through the multi-dimensional electrolytic catalytic oxidation water treatment device, electrolytic catalytic oxidation technology and ceramic membrane filtration are used to optimize the electrode and membrane positions, solving the problems of low treatment efficiency of high COD organic wastewater and large equipment footprint, achieving efficient, stable and environmentally friendly water treatment effects.
Patent Information
- Application Number
- CN202422130878.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-08-30
AI Technical Summary
When existing water treatment technologies and equipment treat organic wastewater with high COD, poor biochemical properties, and difficult to degrade, there are problems such as low treatment efficiency and large equipment footprint.
A multi-dimensional electrolytic catalytic oxidation water treatment device is designed, including a reaction cell, anode plate, cathode plate, ceramic membrane and catalyst. The hydroxyl radicals are generated through electrolytic catalytic oxidation technology, combined with oxygen dissolution and ceramic membrane filtration, and the position of the electrodes and membranes is optimized to ensure a uniform electric field and prevent contamination.
It achieves efficient oxidation and degradation of organic matter, enhances the treatment effect, prevents membrane stains, ensures stable operation of the device, and reduces land and costs.
Smart Images
Figure CN223175956U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of water treatment, and particularly relates to a multi-dimensional electrolytic catalytic oxidation water treatment device. Background Art
[0002] Especially those persistent organic pollutants (POPs) with high toxicity and difficult degradation, which have high concentrations and are difficult to degrade by biochemical methods, pose great challenges to the field of water treatment. Such pollutants are not only difficult to treat, but also traditional treatment equipment often occupies a large area, has high operating costs, and the treatment effect is not satisfactory.
[0003] For such difficult-to-treat organic pollutants, advanced oxidation technologies have received extensive attention because they can effectively mineralize pollutants. This technology mainly relies on the addition, substitution, and electron transfer reactions between highly oxidizing hydroxyl radicals (·OH) and organic substances to completely decompose organic substances into harmless substances. At present, hydroxyl radicals are mainly generated through various methods such as chemical oxidation, electrochemistry, photooxidation, and ultrasonic methods. Among them, the electrochemical method is regarded as a highly potential and efficient organic wastewater treatment technology because of its significant advantages such as relatively easy process control, easy establishment of a closed-loop system, and no secondary pollution.
[0004] As a typical representative of electrochemical advanced oxidation technology, electrocatalytic oxidation shows multiple advantages in engineering applications, such as simple equipment, low cost, small secondary pollution, and easy post-treatment. However, existing water treatment technologies and equipment still face many challenges when treating organic wastewater with high COD, poor biodegradability, and difficult degradation, such as low treatment efficiency and large equipment footprint.
[0005] Therefore, in order to overcome the deficiencies of the existing technology and provide a more efficient, compact, and environmentally friendly water treatment device, this application designs a multi-dimensional electrolytic catalytic oxidation water treatment device. The device aims to achieve efficient treatment of organic wastewater with high COD and difficult biodegradation through innovative electrolytic catalytic oxidation technology, while reducing the equipment footprint and operating costs, bringing revolutionary technological progress to the field of water treatment. Content of the Utility Model
[0006] Aiming at the problems existing in the prior art, the utility model provides a multi-dimensional electrolytic catalytic oxidation water treatment device.
[0007] The present utility model is realized as follows. A multi-dimensional electrolytic catalytic oxidation water treatment device, characterized in that: it includes a reaction tank, the upper part of the reaction tank is connected to a sewage delivery pipeline, and activated carbon and titanium dioxide are filled in the reaction tank; an anode plate and a cathode plate are arranged vertically along the inner edge of the reaction tank, and the anode plate and the cathode plate are electrically connected to a pulsed DC power supply; a catalytic oxidation reaction zone is formed between the anode plate and the cathode plate, and at least two ceramic membranes are arranged vertically in the catalytic oxidation reaction zone, and the production port of the ceramic membrane is connected to a water production self-priming pump through a production main line; an air delivery pipe for increasing the solubility of oxygen in the water body is arranged at the bottom of the reaction tank, the air delivery pipe extends to the catalytic oxidation reaction zone, and the air delivery pipe is connected to a dissolved air pump for generating microbubbles.
[0008] The addition amounts of the activated carbon and the titanium dioxide catalyst are added according to the volume of the reaction tank, and the addition amounts are controlled to be added at 500 - 2000 mg / L.
[0009] Preferably, the distance between the anode plate and the cathode plate accounts for 5 cm - 30 cm of the width of the reaction tank.
[0010] Preferably, the lower ends of the anode plate and the cathode plate are 500 - 800 mm away from the bottom of the reaction tank, and the upper ends of the anode plate and the cathode plate are 500 - 800 mm away from the upper edge of the reaction tank.
[0011] Preferably, the lower ends of the ceramic membranes are 500 - 800 mm away from the bottom of the reaction tank, and the upper ends of the ceramic membranes are 500 - 800 mm away from the upper end of the reaction tank.
[0012] The advantages and technical effects of the present utility model: The multi-dimensional electrolytic catalytic oxidation water treatment device realizes the efficient treatment of high-COD and difficult-to-biodegrade organic wastewater through optimized design and technical application. The technical effects of the device are mainly reflected in the following aspects:
[0013] Efficient oxidation and degradation: The device utilizes electrolytic catalytic oxidation technology to generate hydroxyl radicals through the action of electrodes and catalytic materials. These radicals have strong oxidizing properties and can effectively oxidize and degrade the organic substances in the water body, mineralizing them into harmless substances.
[0014] Enhanced treatment effect: By optimizing the distance between the anode plate and the cathode plate, and their distances from the bottom and the upper edge of the reaction tank, the uniform distribution of the electric field in the reaction tank is ensured, and the efficiency of the catalytic oxidation reaction is improved. At the same time, the dissolved oxygen forms hydrogen peroxide under the action of the electric field, further enhancing the oxidation effect.
[0015] Effective filtration and anti-fouling: A ceramic membrane is installed inside the device to filter the treated water body and remove suspended solids and impurities. By optimizing the distances between the ceramic membrane and the bottom and upper ends of the reaction tank, its filtration effect is ensured and fouling of the membrane is prevented.
[0016] Stable operation and long service life: The design of the device takes into account the protection of the electrodes and the ceramic membrane, preventing their direct contact with the bottom sediments or upper air in the reaction tank, reducing oxidation, corrosion, and aging phenomena, thus ensuring the stable operation and long service life of the device.
[0017] In summary, through advanced technologies and optimized designs, the multi-dimensional electrolytic catalytic oxidation water treatment device achieves efficient, stable, and environmentally friendly treatment effects for difficult-to-treat organic wastewater, and has broad application prospects. Brief Description of the Drawings
[0018] Figure 1 is the schematic diagram of the present utility model.
[0019] In the figure, 1 is the reaction tank; 2 is the sewage supply pipeline; 3 is the anode plate; 4 is the cathode plate; 5 is the ceramic membrane; 6 is the production bus; 7 is the water production self-priming pump; 8 is the air supply pipe; 9 is the dissolved air pump; 10 is the pulsed DC power supply. Detailed Description of the Specific Embodiment
[0020] In order to make the objectives, technical solutions, and advantages of the present utility model clearer and more understandable, the following further details the present utility model in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0021] Please refer to Figure 1 , a multi-dimensional electrolytic catalytic oxidation water treatment device, including a reaction tank 1, the upper part of the reaction tank is connected to a sewage supply pipeline 2, the reaction tank is filled with activated carbon and titanium dioxide catalyst, and the two are evenly mixed. Activated carbon and titanium dioxide are micro-electrode materials, and the dosage can be adjusted according to 500 - 2000 mg / L; the anode plate 3 and the cathode plate 4 are arranged vertically along the inner edge of the reaction tank, and the positive and negative electrodes need to be exchanged after using for a period of time to prevent the deposition of oxides on the electrode surface; the anode plate and the cathode plate are electrically connected to a pulsed DC power supply 10; a catalytic oxidation reaction zone is formed between the anode plate and the cathode plate, and at least two ceramic membranes 5 are arranged vertically in the catalytic oxidation reaction zone, and the production port of the ceramic membrane is connected to a water production self-priming pump 7 through a production bus 6; an air supply pipe 8 for increasing the solubility of oxygen in the water body is arranged at the bottom of the reaction tank, the air supply pipe extends to the catalytic oxidation reaction zone, and the air supply pipe is connected to a dissolved air pump 9 for generating microbubbles.
[0022] The working principle of this multi-dimensional electrolytic catalytic oxidation water treatment device is mainly based on electrolytic catalytic oxidation technology and related physical and chemical processes. It has both two-dimensional (referring to the space between the electrolytic anode and cathode plates) and three-dimensional (referring to the three-dimensional space formed by activated carbon and titanium dioxide). The combination of two-dimensional and three-dimensional is called multi-dimensional electrolytic catalytic oxidation water treatment. The following is a detailed analysis of the working principle:
[0023] Sewage introduction and pretreatment:
[0024] Sewage is introduced into the reaction tank through the sewage water pipeline.
[0025] The reaction tank is filled with activated carbon and titanium dioxide, both of which have strong adsorption and catalytic effects on organic matter.
[0026] Electrocatalytic oxidation reaction:
[0027] Anode plates and cathode plates are provided in the reaction tank, and a catalytic oxidation reaction zone is formed between them.
[0028] When the electrodes are energized, an electric field is generated between the anode and cathode, and the titanium dioxide catalyst under the action of the electric field will produce a cavitation effect.
[0029] Holes have a strong ability to capture electrons and can capture electrons from the solvent, thereby causing redox reactions and generating hydroxyl radicals.
[0030] Hydroxyl radical is a strong oxidant that can react with organic matter in water bodies through addition, substitution and electron transfer, mineralizing it into harmless substances.
[0031] Ceramic membrane filtration and water production:
[0032] At least two ceramic membranes are arranged vertically in the catalytic oxidation reaction zone.
[0033] The function of the ceramic membrane is to filter the treated water and remove suspended matter and impurities.
[0034] The clean water after filtration is connected to the water production self-priming pump through the production port of the ceramic membrane and the production bus, and is finally pumped out and discharged or reused.
[0035] Oxygen dissolution and enhanced oxidation effect:
[0036] An air supply pipe is provided at the bottom of the reaction tank, which extends to the catalytic oxidation reaction zone and is connected to an air dissolving pump that generates microbubbles.
[0037] The dissolved air pump converts the air into microbubbles of nanometer diameter and sends them into the water of the reaction tank through the air supply pipe.
[0038] Microbubbles can significantly increase the solubility of oxygen in water, thereby enhancing the oxidation effect.
[0039] Dissolved oxygen can obtain electrons under the action of an electric field to form hydrogen peroxide (H2O2).
[0040] The titanium dioxide catalyst further captures the electrons of hydrogen peroxide to form more hydroxyl radicals, thereby strengthening the process of oxidatively degrading organic matter.
[0041] Preventing membrane fouling:
[0042] The dissolved bubbles can also play a role in flushing the ceramic membrane to prevent membrane fouling and ensure the filtration effect and water production quality of the ceramic membrane.
[0043] In summary, the multi-dimensional electrolytic catalytic oxidation water treatment device realizes the efficient treatment of high-COD and difficult-to-biodegradable organic wastewater through multiple physical and chemical processes such as electrolytic catalytic oxidation technology, ceramic membrane filtration, oxygen dissolution, and enhanced oxidation effect. At the same time, the device also has multiple advantages such as simple equipment, low cost, small secondary pollution, and convenient post-treatment.
[0044] The distance between the anode plate and the cathode plate is 5 cm - 30 cm, and the distance between the anode and cathode plates can be adjusted according to the conductivity of the water.
[0045] The optimization of this ratio can ensure the uniform distribution of the electric field in the reaction tank, thereby improving the efficiency of the catalytic oxidation reaction.
[0046] If the distance is too large, the electric field strength may be insufficient, affecting the generation of hydroxyl radicals; if the distance is too small, it may lead to over-concentration of the electric field, causing local overheating or electrode damage.
[0047] Therefore, the optimization of this ratio is one of the keys to achieving efficient electrolytic catalytic oxidation.
[0048] The distance between the lower ends of the anode plate and the cathode plate from the bottom of the reaction tank is 500 - 800 mm, preferably 500 mm:
[0049] The optimization of this distance can ensure sufficient contact between the electrode and the pollutants at the bottom of the reaction tank, while avoiding direct contact between the electrode and the sediments or impurities at the bottom of the tank, causing electrode damage or short circuit.
[0050] If the distance is too large, the contact area between the electrode and the pollutants will decrease, affecting the treatment effect; if the distance is too small, the electrode may be affected by the sediments and fail.
[0051] The distance between the upper ends of the anode plate and the cathode plate from the upper edge of the reaction tank is 500 - 800 mm, preferably 500 mm:
[0052] The optimization of this distance can prevent the electrode from directly contacting the air above the reaction tank, thereby reducing the oxidation and corrosion of the electrode.
[0053] Meanwhile, this distance can also ensure sufficient circulation and mixing of the water body in the reaction tank, improving the treatment effect.
[0054] If the distance is too large or too small, it may affect the circulation and mixing effect of the water body, thereby reducing the treatment efficiency.
[0055] The distance from the lower end of the ceramic membrane to the bottom of the reaction tank is 500 - 800 mm, preferably 500 mm:
[0056] The optimization of this distance can ensure sufficient contact between the ceramic membrane and the pollutants at the bottom of the reaction tank, while avoiding direct contact between the ceramic membrane and the sediments or impurities at the bottom of the tank, causing membrane fouling or damage.
[0057] If the distance is too large, the filtration effect of the ceramic membrane will decrease; if the distance is too small, the ceramic membrane may be affected by the sediments and become ineffective.
[0058] The distance from the upper end of the ceramic membrane to the upper end of the reaction tank is 500 - 800 mm, preferably 500 mm:
[0059] Provide a working space for the ceramic membrane. The ceramic membrane stops working for 2 minutes after pumping for 13 minutes during operation. The 500 - mm distance above the ceramic membrane is to prevent the ceramic membrane from sucking in air, prevent water overflow, and store water during backwashing.
[0060] In summary, the optimization of these quantitative parameter characteristics can ensure the efficient progress of the electrolytic catalytic oxidation reaction, the effective filtration of the ceramic membrane, and the stable operation of the entire water treatment device. By precisely controlling these parameters, more efficient, stable, and environmentally friendly water treatment effects can be achieved.
[0061] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A multi-dimensional electrolytic catalytic oxidation water treatment device, characterized in that: It includes a reaction tank. The upper part of the reaction tank is connected to a sewage supply pipeline, and the reaction tank is filled with activated carbon and titanium dioxide. An anode plate and a cathode plate are arranged vertically along the inner edge of the reaction tank. The anode plate and the cathode plate are electrically connected to a pulsed DC power supply, and a catalytic oxidation reaction zone is formed between the anode plate and the cathode plate. At least two ceramic membranes are arranged vertically in the catalytic oxidation reaction zone. The production port of the ceramic membrane is connected to a water production self-priming pump through a production main line. A gas supply pipe for increasing the solubility of oxygen in the water body is arranged at the bottom of the reaction tank. The gas supply pipe extends to the catalytic oxidation reaction zone, and the gas supply pipe is connected to a dissolved air pump for generating microbubbles.
2. The multi-dimensional electrolytic catalytic oxidation water treatment device according to claim 1, wherein: The addition amount of the activated carbon and titanium dioxide catalyst is added according to the volume of the reaction tank, and the addition amount is controlled to be added at 500-2000 mg / L.
3. The multi-dimensional electrolytic catalytic oxidation water treatment device according to claim 1, wherein: The distance between the anode plate and the cathode plate accounts for 5 cm - 30 cm of the width of the reaction tank.
4. The multi-dimensional electrolytic catalytic oxidation water treatment device according to claim 1, wherein: The distance from the lower ends of the anode plate and the cathode plate to the bottom of the reaction tank is 500 - 800 mm, and the distance from the upper ends of the anode plate and the cathode plate to the upper edge of the reaction tank is 500 - 800 mm.
5. The multi-dimensional electrolytic catalytic oxidation water treatment device according to claim 1, characterized in that: The distance from the lower end of the ceramic membrane to the bottom of the reaction tank is 500 - 800 mm, and the distance from the upper end of the ceramic membrane to the upper end of the reaction tank is 500 - 800 mm.