A reaction device for treating high-salt and high-COD wastewater

Abstract

The present invention provides a reaction device for treating high-salt and high-COD wastewater applied in the field of wastewater treatment. By arranging pre-decompression pipes with gradually increasing diameters on the wastewater treatment line and the waste gas treatment line, when the fluid moves in the pipeline and causes a large pressure on the pipeline, the pipeline is pre-decompressed before the fluid reaches the pressure reducing valve, thereby effectively alleviating the impact force on the fluid pipeline, effectively avoiding the loosening or falling off of the pipeline end due to excessive impact force, and reducing the leakage probability of incompletely treated fluid. In addition, under the action of the fluid impact force, the pre-decompression pipe adaptively stretches along the fluid direction, thereby alleviating part of the impact force. When the fluid impact force is too large, the pre-decompression pipe stretches too much, which will cause the liquid buffer ring to be squeezed and deformed, and then drive the extension limit ring to undergo obvious changes, thereby realizing reminders to the staff. Compared with the existing technology, it effectively avoids the safety hazards caused by excessive fluid pressure.

Description

Technical Field

[0001] The present application relates to the field of wastewater treatment, and in particular to a reaction device for treating high-salt and high-COD wastewater. Background Art

[0002] Chemical oxygen demand (COD) is a chemical measurement of the amount of reducing substances in a water sample that need to be oxidized. It is the oxygen equivalent of substances (generally organic matter) that can be oxidized by strong oxidants in wastewater, wastewater treatment plant effluent, and contaminated water. It is an important and rapidly measurable parameter for measuring organic pollution in the study of river pollution and industrial wastewater properties, as well as in the operation and management of wastewater treatment plants. With the rapid development of society, more and more wastewater is characterized by high salinity and high COD levels.

[0003] When treating wastewater, a certain amount of waste gas will be generated. The wastewater and the generated waste gas need to flow through the pipeline to various different equipment for treatment. However, the impact of the waste gas or wastewater flowing out of some equipment is too large. In this case, a pressure reducing valve needs to be installed to reduce the pressure on the pipeline. However, in the process of the fluid reaching the pressure reducing valve, there is still a risk of loosening or falling off the interface between this section of the pipeline and the equipment and the pressure reducing valve, resulting in leakage of incompletely treated waste gas or wastewater, posing a major safety hazard to surrounding workers and the environment. Summary of the Invention

[0004] The purpose of the present application is to reduce the occurrence of loosening or falling off of the pipe end due to fluid impact, effectively avoid the leakage of incompletely treated waste gas or wastewater, and reduce the impact on surrounding workers and environmental safety. Compared with the existing technology, a reaction device for treating high-salt and high-COD wastewater is provided, including a wastewater treatment circuit and a waste gas treatment circuit. The wastewater treatment circuit includes an oxidation tower and a preheater connected to the oxidation tower and a thermal oil heater. The thermal oil heater is connected between the preheater and the oxidation tower, and the three are interconnected. The end of the preheater away from the oxidation tower is sequentially connected to an oxidation liquid cooler, an oxidation liquid transfer tank and a water outlet pump. The wastewater to be treated is pumped into the preheater through a booster pump, and the air is transported to the oxidation tower and the preheater respectively through an air compressor; the waste gas treatment circuit includes a A steam generator and a gas-liquid separation tank, the steam generator is communicated with the gas-liquid separation tank, and the outer end of the gas-liquid separation tank is connected to the exhaust gas cooler and the exhaust gas absorber in sequence; the pipeline between the gas-liquid separation tank and the exhaust gas cooler and the pipeline between the oxidizing liquid cooler and the oxidizing liquid transfer tank are both equipped with a pressure reducing valve and a pre-pressure reducing pipe, the two pre-pressure reducing pipes are respectively located near the pressure reducing valve and the oxidation tower, the pre-pressure reducing pipe includes a thin connecting pipe and a thick connecting pipe respectively connected to the relative ends of the two pipes and a pressure reducing section connected between the thin connecting pipe and the thick connecting pipe, the outer ends of the thin connecting pipe and the thick connecting pipe are respectively provided with a fixed limit ring and a dynamic limit ring, a plurality of elastic telescopic rods are installed between the fixed limit ring and the dynamic limit ring, the extended end of the elastic telescopic rod is connected to the dynamic limit ring, and the dynamic limit ring is movably sleeved on the thick connecting pipe, and the fixed limit ring is fixedly connected to the thin connecting pipe.

[0005] By arranging pre-decompression pipes with gradually increasing diameters on the wastewater treatment line and the waste gas treatment line, when the fluid moves in the pipeline and causes a large pressure on the pipeline, the pipeline is pre-decompressed before the fluid reaches the pressure reducing valve, thereby effectively alleviating the impact force on the fluid pipeline, effectively avoiding the loosening or falling off of the pipeline end due to excessive impact force, and reducing the probability of leakage of incompletely treated fluid. In addition, under the action of the fluid impact force, the pre-decompression pipe adaptively stretches along the direction of the fluid, thereby alleviating part of the impact force. When the fluid impact force is too large, the pre-decompression pipe stretches too much, which will cause the liquid buffer ring to be squeezed and deformed, and then drive the extension limit ring to undergo obvious changes, thereby realizing a reminder to the staff. Compared with the existing technology, it is convenient to handle in time and effectively avoid the safety hazards caused by excessive fluid pressure.

[0006] Furthermore, the inner diameter of the thin connecting tube is smaller than that of the thick connecting tube. Along the direction of fluid flow, the thin connecting tube is close to the fluid source side, so that when the fluid moves toward the pressure reducing valve side, the inner diameter of the pipeline gradually increases, which can effectively reduce the impact force on the inner wall of the pipeline, thereby reducing the occurrence of the pipeline mouth falling off or loosening due to excessive impact force.

[0007] Furthermore, the pressure reducing section includes a plurality of reducers and a transition pipe fixedly connected between two adjacent reducers. The thin connecting pipe, the reducer, the transition pipe and the thick connecting pipe are interconnected. The reducer is a corrugated structure, which makes the pressure reducing section as a whole have a certain elasticity and can be expanded and contracted within a certain range, so that the pressure reducing effect is better. Along the direction of fluid flow, the inner diameter of the reducer gradually increases, and the inner diameters of the two adjacent reducers also gradually increase. By gradually increasing the inner diameter of the pipeline, a good pressure relief effect can be achieved compared with the small inner diameter pipeline that is consistent before and after, and pre-pressure reduction is realized. The transition pipe is a straight structure, which is used for transition, so that the reducer as a whole is not easy to be too long, thereby making the overall stability of the pipeline better.

[0008] Furthermore, the outer ends of the two ends of the thick connecting pipe are fixedly connected to the limited contraction ring and the limited extension ring respectively. Along the direction of fluid flow, the limited extension ring faces the side of the fluid source. The limited contraction ring and the limited extension ring play a limiting role, so that the elongation range of the pressure reducing section is limited, and the elongation range is only within the spacing between the limited contraction ring and the limited extension ring, protecting the reducer from being damaged due to excessive elongation.

[0009] Optionally, a liquid buffer ring is fixedly connected to one end of the extension limiting ring close to the shrinkage limiting ring. The extension limiting ring includes a bearing layer and a warning layer fixedly connected to the bearing layer at one end away from the shrinkage limiting ring. A plurality of liquid guide holes are drilled on the bearing layer, and a round-headed hard needle is provided through the liquid guide hole. The round-headed hard needle passes through the liquid guide hole and extends into the warning layer.

[0010] Furthermore, the liquid buffer ring is filled with colored liquid, and the liquid buffer ring has an elastic sealing structure, the warning layer is made of water-absorbing material, and the color of the warning layer is light. During the elongation process of the decompression section, when the impact force is too large, the elongation amplitude is too large, causing the dynamic limit ring and the liquid buffer ring to be squeezed and collided. On the one hand, the liquid buffer ring can be used as a buffer. On the other hand, during the impact process, the round-headed hard needle will be squeezed and move toward the warning layer, so that the liquid guide hole is connected. At this time, the colored liquid overflows and spreads on the warning layer, causing it to change color from point to sheet. It can serve as a reminder to the staff, facilitate timely adjustment of the discharge flow rate of the fluid, and reduce the occurrence of loosening or falling off of the pipeline due to excessive impact.

[0011] Furthermore, the round-headed hard needle is fixed to the inner wall of the liquid guide hole by a sealing layer. The sealing layer is a hard waterproof rubber layer. The sealing layer is used to fix the round-headed hard needle and at the same time seal the liquid guide hole, so that the colored liquid in the liquid buffer ring is not easily leaked to the warning layer in advance.

[0012] Optionally, a pre-conductive layer is attached to the inner wall in the middle of the liquid guide hole, and the pre-conductive layer is located in the middle of the sealing layer. A plurality of LED lamps are installed on the end face of the bearing layer facing the elastic telescopic rod. The outer cover of the LED lamp is provided with an outer cover ring. The positive and negative wires on the LED lamp circuit extend into the pre-conductive layer and do not contact each other. The pre-conductive layer is made of a water-absorbing material, and the outer cover ring is a transparent structure. When the round-headed hard needle moves in the liquid guide hole due to impact, the colored solution enters the early warning layer along the liquid guide hole. At the same time, when the colored liquid passes through the pre-conductive layer, the pre-conductive layer absorbs part of the colored liquid, so that the circuit where the LED lamp is located is turned on and energized, making the LED lamp light up, further improving the reminder effect for the staff, and facilitating timely manual intervention in the case of excessive fluid impact force, thereby reducing safety hazards.

[0013] Compared with the existing technology, the advantages of this application are:

[0014] By arranging pre-decompression pipes with gradually increasing diameters on the wastewater treatment line and the waste gas treatment line, when the fluid moves in the pipeline and causes a large pressure on the pipeline, the pipeline is pre-decompressed before the fluid reaches the pressure reducing valve, thereby effectively alleviating the impact force on the fluid pipeline, effectively avoiding the loosening or falling off of the pipeline end due to excessive impact force, and reducing the probability of leakage of incompletely treated fluid. In addition, under the action of the fluid impact force, the pre-decompression pipe adaptively stretches along the direction of the fluid, thereby alleviating part of the impact force. When the fluid impact force is too large, the pre-decompression pipe stretches too much, which will cause the liquid buffer ring to be squeezed and deformed, and then drive the extension limit ring to undergo obvious changes, thereby realizing a reminder to the staff. Compared with the existing technology, it is convenient to handle in time and effectively avoid the safety hazards caused by excessive fluid pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the main flow chart of this application;

[0016] Figure 2 It is a flowchart of the prior art;

[0017] Figure 3 This is a left-side perspective view of the pre-decompression pipe of this application;

[0018] Figure 4 This is a perspective view of the right side of the pre-decompression pipe of this application;

[0019] Figure 5 Front view of the pressure relief pipe for this application;

[0020] Figure 6 This is a front view of the pressure relief pipe after a certain extension in this application;

[0021] Figure 7Schematic diagram of the end portion of the pre-decompression pipe near the pressure reducing valve when shortened in Example 2 of the present application;

[0022] Figure 8 A side cross-sectional view of the extension limiting ring of the present application;

[0023] Figure 9 Schematic diagram of the end portion of the extension-limiting ring when extended in Example 2 of the present application;

[0024] Figure 10 This is a cross-sectional view of the front side of the extension limiting ring of this application;

[0025] Figure 11 for Figure 10 Schematic diagram at A in the middle;

[0026] Figure 12 This is a diagram showing the changing process of the warning layer when the pressure is too high in Example 2 of the present application;

[0027] Figure 13 This is a schematic diagram of a partial cross-section of the extension limiting ring in implementation 3 of this application.

[0028] Description of the numbers in the figure:

[0029] 11 thin connecting tube, 12 reducing tube, 13 transition tube, 14 thick connecting tube, 21 fixed limit ring, 22 dynamic limit ring, 23 elastic telescopic rod, 3 shrinkage limit ring, 4 extension limit ring, 41 early warning layer, 42 bearing layer, 421 outer cover ring, 422 LED lamp, 5 liquid buffer ring, 6 round head hard needle, 7 sealing layer, 71 pre-conductive layer. DETAILED DESCRIPTION

[0030] The embodiments will be combined with the drawings in the specification to clearly and completely describe the technical solution of this application. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative work shall fall within the scope of protection of this application.

[0031] Example 1:

[0032] The present invention provides a reaction device for treating high-salt and high-COD wastewater. Figure 1, including a wastewater treatment line and a waste gas treatment line. The wastewater treatment line includes an oxidation tower and a preheater connected to the oxidation tower and a thermal oil heater. The thermal oil heater is connected between the preheater and the oxidation tower, and the three are interconnected. The end of the preheater away from the oxidation tower is sequentially connected to an oxidation liquid cooler, an oxidation liquid transfer tank and a water outlet pump. The wastewater to be treated is pumped into the preheater through a booster pump and mixed with the oxidation liquid. The wastewater to be treated reacts with the oxidation liquid and then passes through the oxidation liquid cooler and the oxidation liquid transfer tank in sequence. After the treatment is completed, it is pumped out through the water outlet pump. The air is transported to the oxidation tower and the preheater respectively through an air compressor, and the air is used as an oxygen source; the waste gas treatment line includes a steam generator and a gas-liquid separation tank connected to the oxidation tower. The steam generator is communicated with the gas-liquid separation tank. The outer end of the gas-liquid separation tank is sequentially connected to an exhaust cooler and an exhaust absorber. The exhaust gas is cooled and absorbed by the exhaust cooler and the exhaust absorber in sequence and then discharged.

[0033] like Figure 1 The pipeline between the gas-liquid separation tank and the tail gas cooler, as well as the pipeline between the oxidation liquid cooler and the oxidation liquid transfer tank are installed with a pressure reducing valve and a pre-pressure reducing pipe. The two pre-pressure reducing pipes are located on the side of the oxidation tower near the pressure reducing valve.

[0034] See also Figure 3-4 The pre-decompression pipe includes a thin connecting pipe 11 and a thick connecting pipe 14 respectively connected to the relative ports of the two pipes, and a decompression section connected between the thin connecting pipe 11 and the thick connecting pipe 14. The outer ends of the thin connecting pipe 11 and the thick connecting pipe 14 are respectively provided with a fixed limit ring 21 and a dynamic limit ring 22. A plurality of elastic telescopic rods 23 are installed between the fixed limit ring 21 and the dynamic limit ring 22. The extended ends of the elastic telescopic rods 23 are connected to the dynamic limit ring 22, and the dynamic limit ring 22 is movably sleeved on the thick connecting pipe 14, and the fixed limit ring 21 is fixedly connected to the thin connecting pipe 11.

[0035] The inner diameter of the thin connecting tube 11 is smaller than the inner diameter of the thick connecting tube 14. Along the direction of fluid flow, the thin connecting tube 11 is close to the fluid source side, so that when the fluid moves toward the pressure reducing valve side, the inner diameter of the pipeline gradually increases, which can effectively reduce the impact force on the inner wall of the pipeline, thereby reducing the occurrence of the pipeline mouth falling off or loosening due to excessive impact force.

[0036] See also Figure 5-6The pressure reducing section includes a plurality of reducers 12 and a transition pipe 13 fixedly connected between two adjacent reducers 12. The thin connecting pipe 11, the reducer 12, the transition pipe 13 and the thick connecting pipe 14 are interconnected. The reducer 12 is a corrugated structure, which makes the pressure reducing section as a whole have a certain elasticity and can be expanded and contracted within a certain range, so that the pressure reducing effect is better. Along the direction of fluid flow, the inner diameter of the reducer 12 gradually increases, and the inner diameters of the two adjacent reducers 12 also gradually increase. By gradually increasing the inner diameter of the pipeline, compared with the small inner diameter pipeline that is consistent before and after, a good pressure relief effect can be achieved, and pre-pressure reduction can be realized. The transition pipe 13 is a straight structure, which is used for transition, so that the reducer 12 as a whole is not easy to be too long, thereby making the overall stability of the pipeline better.

[0037] The outer ends of the two ends of the thick connecting pipe 14 are fixedly connected to the limited contraction ring 3 and the limited extension ring 4 respectively. Along the direction of fluid flow, the limited extension ring 4 faces the side of the fluid source. The limited contraction ring 3 and the limited extension ring 4 play a limiting role, so that the elongation range of the pressure reduction section is limited, and the elongation range is only within the spacing between the limited contraction ring 3 and the limited extension ring 4, protecting the reducer 12 from being damaged due to excessive elongation.

[0038] By setting up pre-decompression pipes with gradually increasing diameters on the wastewater treatment line and the waste gas treatment line, compared with Figure 2 In the existing technology, when the fluid moves in the pipeline and causes a large pressure on the pipeline, the pipeline is pre-decompressed before the fluid reaches the pressure reducing valve, thereby effectively alleviating the impact force on the fluid pipeline, effectively avoiding the loosening or falling off of the pipeline end due to excessive impact force, and reducing the probability of leakage of incompletely treated fluid. In addition, under the action of the fluid impact force, the pre-decompression pipe adaptively stretches along the fluid direction, thereby alleviating part of the impact force.

[0039] Example 2:

[0040] See also Figure 7-8 , one end of the extension limiting ring 4 close to the contraction limiting ring 3 is fixedly connected with a liquid buffer ring 5, such as Figure 10-11 The liquid buffer ring 5 is filled with colored liquid, and the liquid buffer ring 5 is an elastic sealing structure, the warning layer 41 is made of a water-absorbing material, and the color of the warning layer 41 is light-colored, such as Figure 9 During the elongation process of the decompression section, when the impact force is too large, the elongation amplitude is too large, causing the dynamic limit ring 22 to squeeze and collide with the liquid buffer ring 5. On the one hand, the liquid buffer ring 5 can be used as a buffer. On the other hand, during the collision process, the round-headed hard needle 6 is squeezed and moves toward the warning layer 41, so that the liquid guide hole is opened. At this time, the colored liquid overflows and spreads on the warning layer 41. Figure 12, causing a noticeable color change from dots to sheets, which can serve as a reminder to staff, allowing them to adjust the discharge flow rate in a timely manner and reduce the risk of loosening or falling pipes due to excessive impact. Where a represents a dot-like color change, and b represents a color change caused by multiple dots spreading and contacting to form a sheet.

[0041] See also Figure 10-11 The extension-limiting ring 4 includes a bearing layer 42 and a warning layer 41 fixedly connected to the end of the bearing layer 42 away from the contraction-limiting ring 3. The bearing layer 42 is provided with multiple liquid-conducting holes, each of which is provided with a rounded hard needle 6. The rounded hard needle 6 passes through the liquid-conducting holes and extends into the warning layer 41. The rounded hard needle 6 is fixed to the inner wall of the liquid-conducting hole by a sealing layer 7. The sealing layer 7 is a hard, waterproof adhesive layer. The sealing layer 7 is used to fix the rounded hard needle 6 and simultaneously seal the liquid-conducting hole, preventing the colored liquid in the liquid-carrying buffer ring 5 from leaking prematurely onto the warning layer 41.

[0042] When the fluid impact force is too large, the pre-decompression tube will extend too much, causing the liquid buffer ring 5 to be squeezed and deformed, and then causing the extension limit ring 4 to undergo significant changes, thereby reminding the staff. Compared with the existing technology, it is easier to handle in a timely manner and effectively avoid safety hazards caused by excessive fluid pressure.

[0043] Compared with Example 1, this embodiment adds the above structure, and the rest of the parts remain the same as Example 1.

[0044] Example 3:

[0045] See also Figure 13 , a pre-conductive layer 71 is attached to the inner wall of the middle part of the liquid guide hole, and the pre-conductive layer 71 is located in the middle of the sealing layer 7. A plurality of LED lamps 422 are installed on the end face of the bearing layer 42 facing the elastic telescopic rod 23. The outer cover of the LED lamp 422 is provided with an outer cover ring 421. The positive and negative wires on the LED lamp 422 circuit extend into the pre-conductive layer 71 and do not contact each other. The pre-conductive layer 71 is made of a water-absorbing material, and the outer cover ring 421 is a transparent structure. When the round-headed hard needle 6 moves in the liquid guide hole due to impact, the colored solution enters the early warning layer 41 along the liquid guide hole. At the same time, when the colored liquid passes through the pre-conductive layer 71, the pre-conductive layer 71 absorbs part of the colored liquid, so that the circuit where the LED lamp 422 is located is turned on and energized, so that the LED lamp 422 is illuminated, further improving the reminder effect for the staff, facilitating timely manual intervention in the case of excessive fluid impact force, and reducing safety hazards.

[0046] This embodiment adds the above content on the basis of Embodiment 2, and the rest of the contents remain the same as those in Embodiment 2.

[0047] The above is only the best implementation method adopted by this application in combination with current actual needs, but the scope of protection of this application is not limited to this.

Claims

1. A reaction device for treating high-salt and high-COD wastewater, comprising a wastewater treatment circuit and an exhaust gas treatment circuit, characterized in that: The wastewater treatment circuit includes an oxidation tower, a preheater connected to the oxidation tower, and a thermal oil heater. The thermal oil heater is connected between the preheater and the oxidation tower, and the three are interconnected. The end of the preheater away from the oxidation tower is sequentially connected to an oxidation liquid cooler, an oxidation liquid transfer tank, and a water outlet pump. The wastewater is pumped into the preheater through a booster pump, and the air is transported to the oxidation tower and the preheater respectively through an air compressor; the exhaust gas treatment circuit includes a steam generator connected to the oxidation tower and a gas-liquid separation tank. The steam generator is in communication with the gas-liquid separation tank, and the outer end of the gas-liquid separation tank is sequentially connected to an exhaust cooler and an exhaust absorber; The pipeline between the gas-liquid separation tank and the tail gas cooler and the pipeline between the oxidation liquid cooler and the oxidation liquid transfer tank are both installed with a pressure reducing valve and a pre-pressure reducing pipe. The two pre-pressure reducing pipes are respectively located on the side of the oxidation tower adjacent to the pressure reducing valve. The pre-pressure reducing pipe comprises a thin connecting pipe (11) and a thick connecting pipe (14) respectively connected to the relative ends of the two pipelines, and a pressure reducing section connected between the thin connecting pipe (11) and the thick connecting pipe (14). The outer ends of the thin connecting pipe (11) and the thick connecting pipe (14) are respectively provided with a fixed limit ring (21) and a dynamic limit ring (22). A plurality of elastic telescopic rods (23) are installed between the fixed limit ring (21) and the dynamic limit ring (22). The extended ends of the elastic telescopic rods (23) are connected to the dynamic limit ring (22), and the dynamic limit ring (22) is movably sleeved on the thick connecting pipe (14). The fixed limit ring (21) is fixedly connected to the thin connecting pipe (11). The outer ends of the two ends of the thick connecting tube (14) are respectively fixedly connected to the limited contraction ring (3) and the limited extension ring (4); along the direction of fluid flow, the limited extension ring (4) faces the side of the fluid source; the limited extension ring (4) is fixedly connected to the end close to the limited contraction ring (3) with a liquid buffer ring (5); the limited extension ring (4) includes a bearing layer (42) and a warning layer (41) fixedly connected to the end of the bearing layer (42) away from the limited contraction ring (3); a plurality of liquid guide holes are drilled on the bearing layer (42); a round-headed hard needle (6) is provided in the liquid guide hole and penetrates the liquid guide hole; the round-headed hard needle (6) penetrates the liquid guide hole and extends into the warning layer (41); The liquid-carrying buffer ring (5) is filled with colored liquid, and the liquid-carrying buffer ring (5) is an elastic sealing structure. The warning layer (41) is made of a water-absorbing material, and the color of the warning layer (41) is light-colored. The round-headed hard needle (6) is fixed to the inner wall of the liquid guide hole through a sealing layer (7), and the sealing layer (7) is a hard waterproof adhesive layer.

2. A reaction device for treating high-salt and high-COD wastewater according to claim 1, characterized in that: The inner diameter of the thin connecting tube (11) is smaller than the inner diameter of the thick connecting tube (14), and along the flow direction of the fluid, the thin connecting tube (11) is close to the fluid source.

3. A reaction device for treating high-salt and high-COD wastewater according to claim 1, characterized in that: The decompression section comprises a plurality of reducers (12) and a transition pipe (13) fixedly connected between two adjacent reducers (12); the thin connecting pipe (11), the reducer (12), the transition pipe (13) and the thick connecting pipe (14) are interconnected.

4. A reaction device for treating high-salt and high-COD wastewater according to claim 3, characterized in that: The reducer (12) is a corrugated structure. Along the direction of fluid flow, the inner diameter of the reducer (12) gradually increases, and the inner diameters of two adjacent reducers (12) also gradually increase. The transition pipe (13) is a straight structure.

5. A reaction device for treating high-salt and high-COD wastewater according to claim 1, characterized in that: A pre-conductive layer (71) is attached to the inner wall of the middle portion of the liquid guide hole, and the pre-conductive layer (71) is located in the middle portion of the sealing layer (7). A plurality of LED lamps (422) are installed on the end surface of the bearing layer (42) facing the elastic telescopic rod (23). The outer cover of the LED lamp (422) is provided with an outer cover ring (421). The positive and negative wires on the circuit of the LED lamp (422) extend into the pre-conductive layer (71) and do not contact each other.

6. A reaction device for treating high-salt and high-COD wastewater according to claim 5, characterized in that: The pre-conductive layer (71) is a water-absorbing structure, and the outer cover ring (421) is a transparent structure.

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