Two-dimensional-three-dimensional electrode coupled continuous flow electro-catalysis water treatment device

Abstract

The utility model discloses a two-dimensional-three-dimensional electrode coupled continuous flow electro-catalysis water treatment device, particularly relates to the field of wastewater treatment, and aims to solve the problems of low organic pollutant treatment efficiency and unstable reaction in the existing water treatment technology. A main body of the device mainly comprises an electro-catalysis reaction chamber, two-dimensional plate electrodes and three-dimensional particle electrodes are respectively arranged in the reaction chamber, and an upper fixed bed and a lower fixed bed are arranged to ensure that the particle electrodes are uniformly dispersed between the two-dimensional plate electrodes; a water inlet pipe and an aeration pipe are arranged at the bottom of the electro-catalytic reactor and are respectively connected with a water inlet metering pump and an air blower; a gas outlet and a water outlet are formed in the top of the electro-catalytic reactor. According to the utility model, the water treatment effect is greatly improved, the structural design is reasonable, the controllability of the electro-catalytic reaction is stronger, the treatment effect is more stable, and the device has wide adaptability and can meet the water treatment requirements of household water, underground water, industrial wastewater and the like in different scenes.

Description

Technical Field

[0001] This utility model relates to the field of electrochemical water treatment, specifically to a continuous flow electrocatalytic water treatment device with two-dimensional-three-dimensional electrode coupling. Background Technology

[0002] Water pollution has become a major concern, with the treatment of organic pollutants being a key research focus. Currently, many water treatment technologies exist, such as chemical oxidation, biodegradation, and adsorption. These methods can reduce the content of organic pollutants to some extent, but their low efficiency and unstable reactions mean that safely, stably, and quickly recovering water resources from organically contaminated sweet potatoes remains a challenge.

[0003] From an economic and environmental perspective, electrocatalysis has brought new possibilities to water treatment technology. This method uses electrolysis to convert organic pollutants into harmless substances, with advantages such as fast reaction speed and good treatment effect. However, traditional electrochemical catalysis technology has some problems. For example, the efficiency of commonly used two-dimensional planar electrodes is limited by their surface area, and they can only treat a small amount of organic pollutants. At the same time, for three-dimensional particle electrodes with expanded surface area, problems such as poor contact between electrode particles and weak reactivity may exist in continuous water treatment.

[0004] Current research and applications urgently require a treatment device that can operate efficiently under continuous flow, maintain stable reactions, and be applicable to various scenarios. More specifically, there is a novel device that combines the advantages of two-dimensional planar electrodes and three-dimensional particle electrodes while effectively overcoming their respective limitations. This makes improving existing water treatment devices crucial.

[0005] To address the aforementioned problems, the purpose of this invention is to tackle these issues by designing an optimized two-dimensional-three-dimensional electrode coupled continuous flow electrocatalytic wastewater treatment device, with a focus on innovation and efficiency improvement in the treatment of organic pollutants. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by providing a continuous flow electrocatalytic water treatment device with two-dimensional-three-dimensional electrode coupling. This two-dimensional-three-dimensional electrode coupling method overcomes the limitations of a single electrode in water treatment and improves the removal efficiency of organic pollutants in water.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] This utility model provides a two-dimensional-three-dimensional electrode coupled continuous flow electrocatalytic water treatment device, including an electrocatalytic reactor. The device is characterized by: an inlet assembly at the bottom of the electrocatalytic reactor, one end of which is connected to an inlet metering pump, and the other end connected to an outlet nozzle, the outlet nozzles being evenly distributed at the bottom of the reactor; an aeration assembly at the top of the outlet nozzle, one end of which is connected to a blower, the aeration assembly having micro / nano aeration heads evenly distributed at the bottom of the reactor; an electrocatalytic reaction zone at the top of the aeration head, wherein an anode and a cathode are evenly distributed in the reaction zone, and the upper and lower ends of the cathode and anode are respectively fixed to an upper fixed bed and a lower fixed bed; the upper and lower fixed beds are filled with granular electrodes; and an air outlet and a water outlet are provided at the top of the electrocatalytic reaction zone.

[0009] Preferably, the water outlet nozzle of the water inlet component can be an adjustable flow nozzle, and the water outlet mode can be selected as continuous straight flow or diffused spray.

[0010] Preferably, the micro / nano aeration head can be used to control the gas flow rate, and the type can include swirling, spray, or single-hole type.

[0011] Preferably, the anode is a metal oxide coated electrode, and the cathode can be made of copper, titanium, steel or other highly conductive materials, and its shape can be strip-shaped, planar or arc-shaped.

[0012] Preferably, the material of the particulate electrode can be activated carbon loaded with metallic iron, molybdenum, and manganese, or other materials with high electrocatalytic performance, and its particle size, shape, and density can be adjusted.

[0013] This invention provides a continuous flow electrocatalytic water treatment device with two-dimensional-three-dimensional electrode coupling, comprising an inlet system, an aeration system, an electrocatalytic reaction zone, an exhaust valve, and an outlet. The continuous inlet is an upflow type. The aeration system not only propels water into the electrocatalytic reaction zone but also ensures that the three-dimensional particle electrodes in the fixed bed are uniformly suspended between the two-dimensional electrodes, increasing the contact surface area between the particle electrodes and pollutants in the water and optimizing the contact between the particle electrodes. Furthermore, aeration creates a significant dynamic environment, reducing scale buildup on the electrode surface and lowering electrode contamination, thereby extending electrode lifespan. The evenly spaced two-dimensional electrodes not only polarize the three-dimensional particle electrodes but also possess good pollutant oxidation and degradation performance. The water treated by the two-dimensional-three-dimensional electrode coupling is discharged from the outlet at the top of the fixed bed.

[0014] Preferably, the two-dimensional-three-dimensional electrode coupling system uses a switching DC power supply, which can automatically adjust the voltage and current according to changes in water quality to adapt to the treatment needs of different water qualities.

[0015] Preferably, the water inlet system of this device adopts an upflow method, which can use a small inverted cup-shaped inlet to avoid the intrusion of large impurities and sediments, while also ensuring the continuity and stability of the water flow.

[0016] Preferably, the aeration system of the equipment can use a high-efficiency aeration device, such as a microporous aerator.

[0017] Preferably, the fixed bed material selected for this device should have good insulation properties to avoid short circuits caused by direct contact with the electrodes.

[0018] Preferably, the two-dimensional anode plate can be made of lead dioxide or titanium suboxide ceramic electrode with a high oxygen evolution potential, the cathode is preferably a titanium plate, and the distance between the anode and cathode plates is 10-30 cm.

[0019] Preferably, the three-dimensional particulate electrode can be iron oxide-supported activated carbon, with a particle size of 1–5 mm.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. The design of the two-dimensional-three-dimensional electrode coupled continuous flow electrocatalytic water treatment device of this utility model, including the upflow continuous water inlet, aeration system and electrocatalytic reaction zone, achieves full contact between the particulate electrode and pollutants in the water, reduces scale buildup on the electrode surface, reduces electrode contamination, and thus extends the service life of the electrode.

[0022] 2. The equipment has a reasonable structure and strong reaction controllability. The two-dimensional electrode can not only polarize the three-dimensional particle electrode, but also has good pollutant oxidation and degradation performance, resulting in better water quality after treatment. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the device of this utility model.

[0024] In the diagram: 1-Inlet metering pump, 2-Inlet nozzle, 3-Blower, 4-Aeration head, 5-Three-dimensional particle electrode, 6-Fixed bed, 7-Two-dimensional anode, 8-Two-dimensional cathode, 9-DC power supply, 10-Air outlet, 11-Water outlet. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to specific embodiments.

[0026] like Figure 1 As shown, the two-dimensional-three-dimensional electrode coupled continuous flow electrocatalytic water treatment device of this utility model includes an inlet water system, an aeration system, and a two-dimensional-three-dimensional electrocatalytic coupling reaction zone.

[0027] In this embodiment, the present invention adopts an upflow continuous water inlet method, in which organic wastewater is pumped into the electrocatalytic reaction zone by an inlet metering pump; and further employs a high-efficiency aeration device, such as a microporous aerator, to push the water into the electrocatalytic reaction zone. At the same time, the aeration causes the three-dimensional particle electrodes in the fixed bed to be suspended; then, the power supply is turned on and the electrode current density is adjusted, thereby realizing the oxidation and mineralization of organic matter in the water.

[0028] Subsequently, the power supply is turned on, the electrode current density is adjusted, and the dissolved oxygen in the wastewater is directly reduced to generate hydroxyl radicals through a three-electron reduction process, thereby achieving the oxidation and mineralization of organic matter in the water.

[0029] Example 1

[0030] The continuous flow electrocatalytic water treatment device with two-dimensional and three-dimensional electrode coupling of this invention is used to treat coal chemical wastewater. The two-dimensional electrode is a Ti4O7 coated electrode with a titanium substrate, and the three-dimensional particulate electrode is activated carbon with negative α-Fe2O3 (particle size 2 mm). The current density of the two-dimensional electrode is 10 mA / cm². 2 With a hydraulic retention time of 30 min, the COD removal rate was 89%, which is higher than the 55% and 43% of the two-dimensional electrocatalysis or three-dimensional particle electrode oxidation alone.

[0031] Example 2

[0032] The continuous flow electrocatalytic water treatment device with two-dimensional and three-dimensional electrode coupling of this invention is used to treat dyeing and printing wastewater. The two-dimensional electrode is a titanium-based PbO2 coated electrode, and the three-dimensional particulate electrode is activated carbon with negative α-Fe2O3 (particle size 2 mm). The current density of the two-dimensional electrode is 10 mA / cm². 2 With a hydraulic retention time of 45 min, the COD removal rate was 95%, which is higher than the 75% and 63% of the two-dimensional electrocatalysis or three-dimensional particle electrode oxidation alone.

[0033] This invention discloses a continuous flow electrocatalytic water treatment device with two-dimensional and three-dimensional electrode coupling, specifically relating to the field of wastewater treatment. It aims to solve the problems of low treatment efficiency and unstable reactions in existing water treatment technologies for organic pollutants. The main body of the device consists of an electrocatalytic reaction chamber, in which two-dimensional flat electrodes and three-dimensional particulate electrodes are respectively arranged, with upper and lower fixed beds to ensure that the particulate electrodes are uniformly dispersed between the two-dimensional electrodes. The bottom of the electrocatalytic reactor has inlet and aeration pipes, respectively connected to an inlet metering pump and a blower. The top of the electrocatalytic reactor has an outlet for both air and water. This invention significantly improves water treatment efficiency, and its reasonable structural design makes the electrocatalytic reaction more controllable and the treatment effect more stable. This device has wide adaptability and can be applied to water treatment needs in different scenarios such as domestic water, groundwater, and industrial wastewater.

[0034] In summary, this invention discloses a continuous flow electrocatalytic water treatment device with two-dimensional and three-dimensional electrode coupling. By simultaneously setting two-dimensional flat electrodes and three-dimensional particulate electrodes in the reaction chamber, and using a fixed bed to uniformly disperse the particulate electrodes between the two-dimensional electrodes, the water treatment effect is effectively improved. This device has the advantages of reasonable structure, high treatment efficiency, and stable reaction, and has significant innovation and advantages in solving the problem of organic pollutant treatment.

Claims

1. A continuous flow electrocatalytic water treatment device with two-dimensional- three-dimensional electrode coupling, comprising an electrocatalytic reactor, characterized in that: The bottom of the electro-catalytic reactor is provided with a water inlet assembly, one end of which is connected with a water inlet metering pump (1), and the other end is connected with water outlet nozzles (2) which are uniformly distributed on the bottom of the reactor; the upper part of the water outlet nozzles is provided with an aeration assembly, one end of which is connected with a blower (3), and the aeration assembly is provided with micro-nano aeration heads (4) which are uniformly distributed on the bottom of the reactor; the upper part of the aeration heads is an electro-catalytic reaction zone, in which anodes (7) and cathodes (8) are distributed at equal intervals in the reaction zone, and the upper and lower ends of the cathodes and anodes are fixed on the upper and lower fixed beds (6) respectively; the upper and lower fixed beds are filled with granular electrodes (5); and the upper part of the electro-catalytic reaction zone is provided with an air outlet (10) and a water outlet (11).

2. The continuous flow electrocatalytic water treatment device of claim 1, wherein: The water outlet nozzles of the water inlet assembly can be nozzles with adjustable flow size, and the water outlet mode can be selected as continuous straight flow or scattered injection.

3. The continuous flow electrocatalytic water treatment device of claim 1, wherein: The micro-nano aeration heads can be used to control the gas flow size, and the types can include cyclone type, spray type or single-hole type.

4. The continuous flow electrocatalytic water treatment device of claim 1, wherein: The anodes are metal oxide coated electrodes, and the material of the cathodes can be copper, titanium, steel or other materials with strong conductivity, and the shape can be strip-shaped, planar or arc-shaped.

5. The continuous flow electrocatalytic water treatment device of claim 1, wherein: The material of the granular electrodes (5) can be activated carbon loaded with metal iron, molybdenum and manganese, and other materials with high electro-catalytic performance, and the particle size, shape and density of the granular electrodes can be adjusted.

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