An electron beam irradiated water treatment reactor

Abstract

This invention provides an electron beam irradiation water treatment reactor. Several baffles are arranged inside the reactor. A bottom gap is provided between the bottom of the baffles and the bottom of the reactor for wastewater to flow through; a gap is also provided between the top of the baffles and the top of the reactor for wastewater to flow through. The electron beam irradiation water treatment reactor provided in this application, by setting baffles inside the reactor to form an S-shaped flow path, extends the reaction time, increases the electron beam irradiation absorption rate, and simultaneously improves the uniformity of the electron beam irradiation dose distribution. Furthermore, the design of the baffles creates a turbulent flow state within the reactor. This turbulent state not only extends the reaction time but also promotes sufficient contact and mixing between the free radicals generated by electron beam irradiation and the pollutants. This efficient mixing significantly improves the pollutant degradation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to an electron beam irradiation water treatment reactor. Background Technology

[0002] With rapid industrialization and urbanization, water pollution has become increasingly severe, making the demand for efficient and environmentally friendly water treatment technologies ever more urgent. Electron beam irradiation water treatment technology, as an emerging and highly promising water treatment method, has received widespread attention in recent years. This technology uses high-energy electron beams to irradiate water, causing water molecules to ionize and undergo excitation reactions, thereby generating active particles such as hydroxyl radicals, hydrogen radicals, and hydrated electrons. These active particles have extremely strong oxidation-reduction capabilities, enabling them to efficiently degrade organic and inorganic pollutants in water, while also effectively killing bacteria, viruses, and other microorganisms, thus achieving water purification and disinfection.

[0003] However, traditional electron beam irradiation water treatment reactors often have a relatively simple water flow path design, resulting in low irradiation utilization and uneven dose distribution, which reduces the overall wastewater treatment efficiency and quality. Therefore, there is a need for a reactor that can optimize hydrodynamic characteristics, improve dose distribution uniformity, and enhance energy utilization. Utility Model Content

[0004] This invention provides an electron beam irradiation water treatment reactor. By improving the water distribution device and the internal structure of the reactor, the problems of low irradiation efficiency and uneven dose distribution are solved, while the mixing efficiency of active particles and pollutants and the energy utilization rate are improved.

[0005] A wastewater electron beam irradiation water treatment device includes a reactor and an electron beam irradiation device. Several baffles are arranged inside the reactor. A bottom gap is provided between the bottom of the baffles and the bottom of the reactor for wastewater to flow through. A gap is provided between the top of the baffles and the top of the reactor for wastewater to flow through.

[0006] Furthermore, in the electron beam irradiation water treatment device described above, the spacing between the baffles is 4-6 cm, preferably 5 cm.

[0007] Furthermore, in the electron beam irradiation water treatment device described above, the baffle is arranged vertically, and the electron beam irradiation is performed vertically.

[0008] Furthermore, in the electron beam irradiation water treatment reactor described above, an inlet is provided on the side wall of the reactor.

[0009] Furthermore, in the electron beam irradiation water treatment reactor described above, a sludge discharge pipe is provided at the bottom of the reactor.

[0010] Furthermore, the electron beam irradiation water treatment reactor described above includes a plurality of said reactors and an electron beam irradiation device corresponding to each reactor.

[0011] The electron beam irradiation water treatment reactor provided in this application, by incorporating baffles within the reactor to form an S-shaped flow path, extends the reaction time and improves the electron beam irradiation absorption rate. Simultaneously, it enhances the uniformity of the electron beam irradiation dose distribution. Furthermore, the baffle design creates a turbulent flow state within the reactor. This turbulence not only prolongs the reaction time but also promotes thorough contact and mixing between the free radicals generated by electron beam irradiation and the pollutants. This highly efficient mixing significantly improves the pollutant degradation efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the electron beam irradiation water treatment reactor provided by this utility model;

[0013] Figure label:

[0014] 1-Inlet; 2-Baffle plate; 3-Electron beam irradiation device; 4-Dosing port; 5-Turbulent flow zone; 6-Outlet; 7-Bottom gap; 8-Sludge accumulation zone; 9-Sludge discharge pipe. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0016] In traditional electron beam irradiation water treatment reactors, the water flow is often waterfall-like or jet-like. Under the electron beam, the movement is free-flowing without solid sidewalls, easily resulting in high flow velocities and thin water layers. This leads to low irradiation energy utilization and excessively short pollutant reaction times. Furthermore, the significant velocity difference between the water's edge and center results in uneven dose distribution. Simultaneously, this flow pattern lacks horizontal and vertical mixing, causing irradiation products such as hydroxyl radicals, hydrogen radicals, and hydrated electrons to concentrate unevenly on the upper surface. This prevents lower-layer pollutants from fully reacting with these active particles.

[0017] The residence time of most water bodies in the irradiated area was insufficient. Since electron beam irradiation requires a certain amount of time to achieve the ideal dose deposition effect on water, insufficient residence time directly resulted in some water bodies not receiving sufficient electron beam irradiation.

[0018] Figure 1 This is a schematic diagram of the electron beam irradiation water treatment reactor provided by this utility model, as shown below. Figure 1 As shown, the electron beam irradiation water treatment reactor provided by this utility model has several baffles 2 inside the reactor. A bottom gap 7 is provided between the bottom of the baffles 2 and the bottom of the reactor for wastewater to flow through; a gap is provided between the top of the baffles 2 and the top of the reactor for wastewater to flow through. A sludge discharge pipe 9 is provided at the bottom of the reactor.

[0019] Specifically, the reactor is the space that contains and treats wastewater, while the electron beam irradiation device is used to generate a high-energy electron beam to irradiate the wastewater within the reactor. As the water flows through these baffles, its flow direction constantly changes, thus generating turbulence. Wastewater enters from inlet 1 and forms an S-shaped flow path within the reactor after passing through baffle 2. This flow pattern increases the degree of turbulence, causing the water to flow in a turbulent state within the reactor.

[0020] Furthermore, during electron beam irradiation, reactive particles such as hydroxyl radicals, hydrogen radicals, and hydrated electrons are generated in the water. These free radical groups are crucial for pollutant degradation. Turbulent water flow rapidly disperses these free radical groups throughout the water body, ensuring sufficient contact with the pollutants. Because the free radical groups mix quickly in turbulent conditions, their reaction with the pollutants becomes more uniform. This uniform reaction helps ensure that every part of the pollutant is attacked by free radical groups, thereby improving the overall degradation efficiency. Finally, the treated wastewater is discharged through outlet 6, and the resulting sludge accumulates in sludge accumulation zone 8 and is discharged through sludge discharge pipe 9.

[0021] Gap spacers are provided between the bottom of baffle 2 and the bottom of the reactor, and between the top of baffle 2 and the top of the reactor, to allow wastewater to flow through. These gaps are designed to ensure smooth flow of wastewater between the baffles while simultaneously creating turbulent flow to enhance mixing.

[0022] The electron beam irradiation water treatment reactor provided in this application, by incorporating baffles within the reactor to form S-shaped or more complex flow paths, extends the residence time of wastewater within the reactor, thereby improving the uniformity of the electron beam irradiation dose distribution. This helps ensure that each portion of wastewater receives sufficient electron beam irradiation, improving overall water treatment efficiency and quality. Furthermore, the baffle design creates a turbulent flow state within the reactor. This turbulence not only extends the reaction time but also promotes thorough contact and mixing between the free radicals generated by electron beam irradiation and the pollutants. This highly efficient mixing significantly improves pollutant degradation efficiency, increasing it by more than 30% compared to traditional reactors.

[0023] Furthermore, the spacing between the baffles 2 is 4-6 cm.

[0024] Specifically, the space between the baffles forms a turbulent zone 5 due to the obstruction and guidance of the water flow in this area. By designing the distance between the two baffles 2 to be 4-6 cm, preferably 5 cm, the distribution of water velocity, direction, and pressure in the turbulent zone can be made more uneven. This unevenness effectively promotes the mixing and collision between water flows, thereby enhancing the full contact between active particles and pollutants and improving the pollutant degradation efficiency.

[0025] Furthermore, the baffle is arranged vertically, and the electron beam of the electron beam irradiation device is also irradiated vertically.

[0026] Specifically, the reactor design employs a vertical irradiation structure, meaning water flows vertically into the irradiation area from the top or bottom of the reactor and flows through that area in a vertical direction. This design increases the depth of the water flow within the irradiation area, allowing for more efficient utilization of the electron beam's energy compared to traditional irradiation methods. The increased depth of the water flow within the irradiation area, due to the vertical irradiation structure, means the electron beam needs to penetrate a thicker water layer to reach the other side of the reactor. This design facilitates the full deposition of electron beam energy in the water, reducing energy loss during penetration. Due to the increased water depth and the full deposition of electron beam energy, the vertical irradiation structure significantly improves the conversion rate of electron beam energy in the water treatment process, increasing it by 10%-15%. This means more electron beam energy is effectively used for pollutant degradation and sterilization.

[0027] Furthermore, an injection port 4 is provided on the side wall of the reactor.

[0028] Specifically, this application provides an inlet 4 on the side wall of the reactor, facilitating the addition of oxidizing agents (such as ozone, hydrogen peroxide, etc.) or other auxiliary treatment agents. Turbulent water flow can more quickly disperse the agents throughout the water body, significantly improving the mixing efficiency between the agents and pollutants. Because the mixing of agents and pollutants is more uniform, active particles (such as hydroxyl radicals) can more effectively contact and react with the pollutants, thereby accelerating the degradation process. This helps to shorten treatment time and improve treatment efficiency. Furthermore, operators can directly and quickly add agents into the reactor through the side wall inlet without opening the top of the reactor or performing complex operations, improving the efficiency of agent addition and reducing operating time and labor costs.

[0029] Furthermore, the surface of the baffle plate 2 is coated with a nanoscale photocatalytic coating.

[0030] Specifically, the nanoscale photocatalytic coating on the surface of the baffle plate 2 can generate highly oxidizing active substances under the excitation light generated by electron beam irradiation. These substances work synergistically with the free radicals generated by electron beam irradiation to further enhance the degradation capacity of organic pollutants in wastewater.

[0031] Furthermore, the apparatus provided in this application includes multiple reactors and an electron beam irradiation device corresponding to each reactor.

[0032] Specifically, the device provided in this application can be expanded into a multi-stage series reactor, suitable for high-concentration wastewater or high-flow-rate treatment scenarios.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An electron beam irradiation water treatment reactor comprising a reactor, an electron beam irradiation device, characterized in that, Several baffles (2) are provided inside the reactor. A bottom gap (7) is provided between the bottom of the baffle (2) and the bottom of the reactor for sewage to flow through. A gap is provided between the top of the baffle (2) and the top of the reactor for sewage to flow through.

2. The electron beam irradiation water treatment reactor of claim 1, wherein, The spacing between the baffles (2) is 4-6 cm.

3. The electron beam irradiation water treatment reactor of claim 2, wherein, The spacing between the baffles (2) is 5cm.

4. The electron beam irradiation water treatment reactor according to any one of claims 1-3, characterized in that, The baffle (2) is vertically arranged, and the electron beam of the electron beam irradiation device is vertically irradiated.

5. The electron beam irradiation water treatment reactor according to claim 4, characterized in that, An injection port (4) is provided on the side wall of the reactor.

6. The electron beam irradiation water treatment reactor according to claim 4, characterized in that, A sludge discharge pipe (9) is provided at the bottom of the reactor.

7. The electron beam irradiation water treatment reactor according to claim 4, characterized in that, The surface of the baffle (2) is coated with a nanoscale photocatalytic coating.

8. The electron beam irradiation water treatment reactor according to claim 4, characterized in that, It includes multiple reactors and an electron beam irradiation device corresponding to each reactor.

Images