Environment-friendly treatment device and treatment process for cleaning waste liquid of chemical reaction kettle

Abstract

The application discloses an environmental protection treatment device and treatment process for chemical reaction kettle cleaning waste liquid, which comprises a filtering mechanism, an aeration mechanism and a reaction mechanism, wherein the filtering mechanism, the aeration mechanism and the reaction mechanism are sequentially connected, one side of the filtering mechanism is provided with a liquid inlet pipe, an input end of the liquid inlet pipe is connected with a waste outlet of an external reaction kettle, the aeration mechanism comprises an aeration tank, an inner wall of the aeration tank is fixedly connected with a second partition plate, a plurality of aeration pipelines are equidistantly arranged at a bottom end of the second partition plate, output ends of the plurality of aeration pipelines simultaneously pass through the second partition plate, input ends of the plurality of aeration pipelines are simultaneously connected with aeration machines, and an outer wall of a top end of the second partition plate is fixedly connected with a flow guide bin. The environmental protection treatment device and treatment process for chemical reaction kettle cleaning waste liquid have the effects that the aeration efficiency can be ensured, the foam generation amount is reduced, the edge foam is continuously guided to the middle position, and the effects of avoiding causing the water quality of the external drainage to decrease and environmental pollution are achieved.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to an environmentally friendly treatment device and process for cleaning waste liquid from chemical reaction vessels. Background Technology

[0002] Direct discharge of wastewater from chemical reactor cleaning will severely pollute water bodies, impacting aquatic life and leading to eutrophication and algal blooms, ultimately causing water quality deterioration. To prevent this environmental damage, the wastewater must undergo environmentally friendly treatment before discharge.

[0003] The environmentally friendly treatment process for cleaning wastewater generally includes filtration, aeration, and chemical reaction. During aeration, surfactants in the wastewater easily form foam under aeration conditions. A large accumulation of foam in the aeration tank can lead to environmental pollution, reduced aeration efficiency, and a decline in the quality of effluent. To reduce foam generation, the aeration rate is usually reduced, but this also results in decreased aeration efficiency, which is detrimental to the environmentally friendly treatment of wastewater. Summary of the Invention

[0004] This invention discloses an environmentally friendly treatment device and process for cleaning wastewater from chemical reaction vessels. It aims to address the problem that surface-active substances in wastewater easily form foam under aeration conditions, and the accumulation of large amounts of foam in the aeration tank can lead to environmental pollution, decreased aeration efficiency, and deterioration of effluent quality. While reducing foam generation typically involves decreasing the aeration rate, this also results in reduced aeration efficiency, hindering the environmentally friendly treatment of wastewater.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An environmentally friendly treatment device for cleaning waste liquid from a chemical reactor includes a filtration mechanism, an aeration mechanism, and a reaction mechanism, which are connected in sequence. An inlet pipe is provided on one side of the filtration mechanism, and the input end of the inlet pipe is connected to the waste discharge port of the external reactor.

[0007] The aeration mechanism includes an aeration tank, and a partition plate two is fixedly connected to the inner wall of the aeration tank. Multiple aeration pipes are equidistantly arranged at the bottom end of the partition plate two, and the output ends of the multiple aeration pipes pass through the partition plate two at the same time. The input ends of the multiple aeration pipes are connected to aerators at the same time. A diversion chamber is fixedly connected to the top outer wall of the partition plate two, and the top height of the diversion chamber is lower than the top height of the aeration tank. The top outer wall of the diversion chamber is provided with multiple serrated edges, and a filter screen one is installed on the upper inner wall of the diversion chamber. Submersible water pumps are tightly connected to the multiple inner walls of the diversion chamber, and a filter screen cover is fitted onto the outer wall of each submersible water pump. Each filter screen cover is installed on the partition plate two at the same time, and the output ends of some aeration pipes are located inside the diversion chamber.

[0008] The aeration tank is supported by a horizontal support, and a water storage tank is installed at the top of the horizontal support. A sprayer is installed at the bottom of the water storage tank and passes through the horizontal support. The sprayer includes multiple high-pressure nozzles and is located directly above the diversion chamber.

[0009] A three-way pipe is tightly connected to one side of the inner wall of the aeration tank. One port of the three-way pipe extends into the bottom of the aeration tank. The second port of the three-way pipe is connected to an external feeder. The third port of the three-way pipe is connected to a reaction mechanism. A water pump is installed on the three-way pipe between the first and third ports.

[0010] By incorporating an aeration mechanism, when cleaning wastewater enters the aeration tank through the filtration system, it first enters the gap between the aeration tank and the diversion chamber. As the liquid level continues to rise until it surpasses the diversion chamber, the wastewater enters the diversion chamber from the serrated edge. Under the action of the submersible pump, it forms a liquid flow path in the static aeration tank. This flowing state of the wastewater ensures continuous contact with the aeration pipes, which helps optimize aeration efficiency and reduce aeration time. The foam generated during aeration, along with the liquid flow path from the outside to the inside, floats and moves to the top of the diversion chamber. Based on the filter screen at the top of the diversion chamber, the foam can adhere. At this time, water in the storage tank above the foam is evenly sprayed onto the foam through multiple high-pressure nozzles. The water pressure generated can break the foam, and the serrated edge can also break some of the foam during the flow. This can reduce the amount of foam generated while ensuring aeration efficiency. At the same time, when breaking the foam, it also continuously guides the edge foam to the center position, avoiding the degradation of the effluent quality and environmental pollution.

[0011] In a preferred embodiment, the filtration mechanism includes a transition chamber, and a detection box is fixedly connected to one inner wall of the transition chamber. The connection between the liquid inlet pipe and the transition chamber is located inside the detection box. A liquid passage pipe is tightly connected to the other inner wall of the transition chamber, and a water pump is installed on the liquid passage pipe.

[0012] The output end of the liquid-passing pipe is tightly connected to the filter chamber, and multiple grid plates are obliquely and equidistantly arranged on the inner wall of the filter chamber. The diameter of the multiple grid plates decreases from the outside to the inside. A partition plate is fixedly connected to the outer wall on the same side of each grid plate. The outer wall of the partition plate is also connected to the inner wall of the filter chamber, and the top of the partition plate is flush with the top of the filter chamber. A triangular through groove is provided on each partition plate.

[0013] Each of the grid plates has a side support plate fixedly connected to the inner wall on the other side, and the outer wall of the side support plate is connected to the inner wall of the filter chamber. An inclined guide plate is laid between adjacent grid plates, and multiple rows of scales are equidistantly arranged on the outer surface of the inclined guide plate. The scales of two adjacent rows are staggered. A pad is provided on the back of each grid plate, and the pad and the inclined guide plate are staggered.

[0014] The connection between the liquid inlet pipe and the filter chamber is located within the outermost grid plate area. A first drain pipe is connected to one inner wall of the filter chamber and is connected to the aeration tank. The connection between the first drain pipe and the filter chamber is located within the innermost grid plate area. A square trough is provided through the bottom of the filter chamber and is located on one side of multiple grid plates. An electric gate is provided on one side of the filter chamber and can block the square trough. A waste collection tank is engaged at the bottom of the square trough, and a second drain pipe is engaged on one inner wall of the waste collection tank. The second drain pipe is also connected to the aeration tank, and multiple leakage holes are provided at the connection between the two.

[0015] By incorporating a filtration mechanism, multiple horizontally arranged grids of varying precision are separated by partitions and side supports. A water flow path is established through triangular grooves, thereby reducing the volume of the filter chamber while extending the water flow distance between adjacent grids. This expands the space for impurity accumulation, preventing impurities from quickly clogging the grid surface and reducing the frequency of grid cleaning. Opening the electric gate opens the square sluice, allowing high-pressure water to flush the grids from above. Accumulated impurities fall through the square sluice into the waste collection tank for easy removal and cleaning. Simultaneously, the establishment of a second drain pipe creates a drainage path, providing a buffer time for emergency operations.

[0016] In a preferred embodiment, the reaction mechanism includes a mixing chamber connected to a three-way pipe, a motor is installed at the top of the mixing chamber, and the output end of the motor passes through the mixing chamber and is connected to a stirrer. The inner wall of the mixing chamber is lined with a built-in heater.

[0017] The top inner wall of the mixing chamber is connected to an air extraction pipe, and one end of the air extraction pipe is tightly connected to an air extraction machine. Multiple partitions 3 are fixedly connected at equal intervals on the inner wall of the mixing chamber, and the multiple partitions 3 are close to the bottom of the mixing chamber. Each partition 3 is hollow, and multiple ozone filling pipes are respectively installed in each partition 3. The output end of each ozone filling pipe passes through the bottom end of the partition 3, and a pressure sensing plate is attached to the bottom end of each partition 3.

[0018] One end of multiple ozone filling pipes is simultaneously connected to an ozone generator. The upper and lower parts of the inner wall of one side of the mixing chamber are simultaneously connected to a three-way pipe two, and a three-way switching valve is installed on the three-way pipe two. Water pump three and water pump four are respectively installed on the two branches of the three-way pipe two.

[0019] An environmentally friendly treatment process for cleaning waste liquid from chemical reaction vessels includes the following specific steps:

[0020] S1: Water quality testing and pH adjustment: Waste liquid enters the transition tank, where waste liquid water quality testing is completed, and appropriate pH adjusters are added to neutralize the pH of the waste liquid.

[0021] S2: Multi-stage filtration: The water flow is regulated by a water pump, and the waste liquid enters the filter chamber for multi-stage filtration to remove suspended solids and floating matter from the waste liquid.

[0022] S3: Aeration treatment: The filtered waste liquid enters the aeration tank through the drain pipe for aeration treatment, so that the waste liquid can fully contact with oxygen, maintain a certain dissolved oxygen concentration, and reduce chemical oxygen demand (COD) and biochemical oxygen demand (BOD).

[0023] S4: Ozone oxidation treatment: The aerated waste liquid is mixed with flocculant and coagulant aid through a three-way pipe, and then enters the mixing chamber for ozone oxidation treatment.

[0024] S5: Secondary filtration: The waste liquid is filtered out of the residue through secondary filtration and then discharged.

[0025] With a reaction mechanism in place, the aerated waste liquid enters the mixing chamber through the first three-way pipe. Throughout the process, the ozone usage can be controlled by the pressure sensor plate and the ozone filling pipe, avoiding ozone waste and reducing costs. The inverted ozone filling pipe is also less prone to clogging. In addition, the continuous suction of the air pump can simultaneously remove odors generated during the reaction, greatly optimizing the odor removal efficiency of the waste liquid. With the second three-way pipe structure, the flow path can be switched by the three-way switching valve. If the waste liquid flows from top to bottom, an external circulation pipe is established, which is suitable for situations with many impurities and insufficient oxygenation. If the waste liquid flows from bottom to outside, the residual waste liquid at the bottom of the mixing chamber can be completely extracted to prevent waste liquid accumulation. If the waste liquid flows from top to outside, it is the normal drainage path.

[0026] As described above, an environmentally friendly treatment device for cleaning waste liquid from a chemical reactor includes a filtration mechanism, an aeration mechanism, and a reaction mechanism. These three mechanisms are sequentially connected. One side of the filtration mechanism has an inlet pipe, the input end of which is connected to the waste discharge port of the external reactor. The aeration mechanism includes an aeration tank, with a partition plate two fixedly connected to its inner wall. Multiple aeration pipes are equidistantly arranged at the bottom of the partition plate two, with the output ends of these pipes simultaneously passing through the partition plate two. The input ends of these pipes are simultaneously connected to aerators. A diversion chamber is fixedly connected to the top outer wall of the partition plate two, and the diversion chamber... The top of the diversion chamber is lower than the top of the aeration tank. The outer wall of the top of the diversion chamber has multiple serrated edges, and a filter screen is installed on the upper inner wall. Submersible water pumps are tightly connected to multiple inner walls of the diversion chamber, and each submersible water pump has a filter screen cover fitted onto its outer wall. Each filter screen cover is also installed on a partition plate. The output end of some aeration pipes is located inside the diversion chamber. A horizontal support spans the upper part of the aeration tank, and a water storage tank is installed at the top of the support. A sprayer is installed at the bottom of the water storage tank, passing through the horizontal support. The sprayer includes multiple high-pressure nozzles and is located directly above the diversion chamber. The environmentally friendly treatment device and process for chemical reactor cleaning wastewater provided by this invention can reduce foam generation while ensuring aeration efficiency, and continuously guide edge foam to the center, avoiding a decline in effluent quality and environmental pollution. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an environmentally friendly treatment device for cleaning waste liquid from a chemical reactor, as proposed in this invention.

[0028] Figure 2 This is a schematic diagram of the cover plate structure of an environmentally friendly treatment device for cleaning waste liquid from a chemical reactor, as proposed in this invention.

[0029] Figure 3 This is a top view of the shell structure of an environmentally friendly treatment device for cleaning waste liquid from a chemical reactor, as proposed in this invention.

[0030] Figure 4 This is a side cross-sectional view of the shell structure of an environmentally friendly treatment device for cleaning waste liquid from a chemical reactor, as proposed in this invention.

[0031] Figure 5 This is a side view of the shell structure of an environmentally friendly treatment device for cleaning waste liquid from a chemical reactor, as proposed in this invention.

[0032] Figure 6 This is a side view of the shell structure of an environmentally friendly treatment device for cleaning waste liquid from a chemical reactor, as proposed in this invention.

[0033] Figure 7 This is a side view of the shell structure of an environmentally friendly treatment device for cleaning waste liquid from a chemical reactor, as proposed in this invention.

[0034] Figure 8 This is a side view of the shell structure of an environmentally friendly treatment device for cleaning waste liquid from a chemical reactor, as proposed in this invention.

[0035] Figure 9 This is a detailed flow chart of an environmentally friendly treatment process for cleaning waste liquid from a chemical reactor, as proposed in this invention.

[0036] In the diagram: 1. Inlet pipe; 2. Filtration mechanism; 3. Aeration mechanism; 4. Reaction mechanism; 201. Transition chamber; 202. Detection box; 203. Water pump one; 204. Liquid flow pipe; 205. Partition one; 206. Filtration chamber; 207. Drain pipe one; 208. Drain pipe two; 209. Waste collection tank; 210. Electric gate; 211. Grid plate; 212. Inclined guide plate; 213. Scales; 214. Pad plate; 215. Square trough; 216. Leakage hole; 217. Triangular through-hole; 218. Side support plate; 301. Aeration tank; 302. Horizontal support; 303. Water storage tank; 304. Sprayer; 305. 306. T-pipe 1; 307. Pump 2; 308. Diversion chamber; 309. Baffle 2; 310. Aeration pipe; 311. Serrated edge; 312. Aerator; 313. Filter screen 1; 314. Filter screen cover; 315. Submersible water pump; 406. High-pressure nozzle; 407. Mixing chamber; 408. Built-in heater; 409. Motor; 400. Air extractor; 401. Air extraction pipe; 402. Agitator; 403. Three-way switching valve; 404. Pump 3; 405. T-pipe 2; 416. Pump 4; 417. Ozone oxygenation pipe; 418. Baffle 3; 419. Ozone generator; 410. Pressure sensing plate. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0038] The present invention discloses an environmentally friendly treatment device and process for cleaning waste liquid from chemical reactors, which is mainly applied to the treatment of cleaning waste liquid from chemical reactors.

[0039] Reference Figures 1-3 An environmentally friendly treatment device for cleaning waste liquid from a chemical reactor includes a filtration mechanism 2, an aeration mechanism 3, and a reaction mechanism 4. The filtration mechanism 2, the aeration mechanism 3, and the reaction mechanism 4 are connected in sequence, and an inlet pipe 1 is provided on one side of the filtration mechanism 2. The input end of the inlet pipe 1 is connected to the waste discharge port of the external reactor.

[0040] The aeration mechanism 3 includes an aeration tank 301, and a partition 308 is fixedly connected to the inner wall of the aeration tank 301. Multiple aeration pipes 309 are equidistantly arranged at the bottom end of the partition 308, and the output ends of the multiple aeration pipes 309 simultaneously pass through the partition 308. An aerator 311 is simultaneously connected to the input end of the multiple aeration pipes 309. A diversion chamber 307 is fixedly connected to the outer wall of the top of the partition 308, and the top of the diversion chamber 307 is lower than the height of the aeration pipes. The top height of pool 301, the top outer wall of the diversion chamber 307 is provided with multiple serrated edges 310, and the upper inner wall of the diversion chamber 307 is equipped with a filter screen 312. The inner walls of multiple sides of the diversion chamber 307 are respectively tightly connected to submersible water pumps 314, and the outer wall of each submersible water pump 314 is respectively fitted with a filter screen cover 313. Each filter screen cover 313 is also installed on the partition plate 308, and the output end of part of the aeration pipe 309 is located inside the diversion chamber 307.

[0041] A horizontal support 302 spans the upper part of the aeration tank 301, and a water storage tank 303 is installed at the top of the horizontal support 302. A sprayer 304 is installed at the bottom of the water storage tank 303, and the sprayer 304 passes through the horizontal support 302. The sprayer 304 includes multiple high-pressure nozzles 315, and is located directly above the diversion chamber 307. When the cleaning waste liquid enters the aeration tank 301 through the filtration mechanism 2, it will first enter the gap between the aeration tank 301 and the diversion chamber 307. As the water level continues to rise until it exceeds the level of the inlet chamber 307, the waste liquid will enter the interior of the inlet chamber 307 through the serrated edge 310 and accumulate inside. Under the action of the submersible pump 314, the waste liquid in the inlet chamber 307 will be continuously discharged back into the gap between the aeration tank 301 and the inlet chamber 307, thus forming a liquid flow path in the static aeration tank 301. The filter screen 313 protects the submersible pump 314 to prevent sedimentation. The waste generated by sedimentation clogs the submersible pump 314. Since the aeration pipes 309 are distributed throughout the diversion chamber 307 and the aeration tank 301, the waste liquid in the flowing state can maintain continuous contact with the aeration pipes 309, which helps to optimize aeration efficiency and reduce the aeration time. The foam generated during the aeration process will float and move to the top of the diversion chamber 307 with the water flow path from the outside to the inside. Based on the setting of the filter screen 312 at the top of the diversion chamber 307, the foam can be adhered to ensure that the foam is concentrated and accumulated above the diversion chamber 307. At this time, the water in the water storage tank 303 above the foam is evenly sprayed onto the foam through multiple high-pressure nozzles 315. The water pressure generated can break the foam, and the serrated edge 310 can also break some of the foam in the flow process. Thus, while ensuring aeration efficiency, the amount of foam generated can be reduced. At the same time, when breaking the foam, the edge foam is continuously guided to the middle position to avoid the decline of the external drainage quality and environmental pollution.

[0042] Reference Figure 2 In a preferred embodiment, a three-way pipe 305 is tightly connected to one inner wall of the aeration tank 301, and port one of the three-way pipe 305 extends into the bottom of the aeration tank 301, port two of the three-way pipe 305 is connected to an external feeder, and port three of the three-way pipe 305 is connected to the reaction mechanism 4. A water pump 306 is installed on the three-way pipe 305 and between port one and port three.

[0043] Reference Figures 4-6 In a preferred embodiment, the filtration mechanism 2 includes a transition chamber 201, and a detection box 202 is fixedly connected to one inner wall of the transition chamber 201. The connection between the liquid inlet pipe 1 and the transition chamber 201 is located inside the detection box 202. A liquid passage pipe 204 is tightly connected to the other inner wall of the transition chamber 201, and a water pump 203 is installed on the liquid passage pipe 204.

[0044] Reference Figures 4-6 In a preferred embodiment, the output end of the liquid inlet pipe 204 is tightly connected to the filter chamber 206, and multiple grid plates 211 are obliquely and equidistantly arranged on the inner wall of the filter chamber 206. The diameter of the multiple grid plates 211 decreases from the outside to the inside. A partition plate 205 is fixedly connected to the outer wall on the same side of each grid plate 211. The outer wall of the partition plate 205 is also connected to the inner wall of the filter chamber 206, and the top of the partition plate 205 is flush with the top of the filter chamber 206. A triangular through groove 217 is provided through each partition plate 205.

[0045] Reference Figures 4-6 In a preferred embodiment, a side support plate 218 is fixedly connected to the inner wall of the other side of each grid plate 211, and the outer wall of the side support plate 218 is simultaneously connected to the inner wall of the filter chamber 206. An inclined guide plate 212 is laid between adjacent grid plates 211, and multiple rows of scales 213 are equidistantly arranged on the outer surface of the inclined guide plate 212. Adjacent rows of scales 213 are staggered. A pad plate 214 is provided on the back of each grid plate 211, and the pad plate 214 and the inclined guide plate 212 are staggered.

[0046] Reference Figures 4-6In a preferred embodiment, the connection between the liquid inlet pipe 204 and the filter chamber 206 is located within the outermost grid plate 211. A drain pipe 207 is connected to one inner wall of the filter chamber 206 and is connected to the aeration tank 301. The connection between the drain pipe 207 and the filter chamber 206 is located within the innermost grid plate 211. A square trough 215 is provided through the bottom of the filter chamber 206, and the square trough 215 is located on one side of multiple grid plates 211. An electric gate 210 is provided on one side of the filter chamber 206, and the electric gate 210 can block the square trough 215. The bottom of the square trough 215 is engaged with... Waste collection tank 209 has a drain pipe 208 attached to one inner wall. Drain pipe 208 is connected to aeration tank 301, and multiple perforations 216 are provided at the connection point. In filtration mechanism 2, wastewater enters transition chamber 201 through inlet pipe 1. A portion of the wastewater can enter first, filling the detection box 202 with water. Water quality testing is performed on a fixed amount of water before it is introduced into transition chamber 201. Since the water volume in transition chamber 201 remains constant, the amount of neutralizing agent added can be easily adjusted. The water pump 203 allows control of the wastewater entry speed into filter chamber 206 by adjusting the drainage volume, ensuring filtration efficiency. Filter chamber 2... In filter 06, multiple grids 211 of varying precision are arranged horizontally and separated by partitions 205 and side support plates 218. A water flow path is established at the triangular groove 217. This reduces the volume of the filter chamber 206 while extending the water flow distance between adjacent grids 211. When water flows from the pad 214 to the inclined guide plate 212, the inclined arrangement of the guide plate 212 and the staggered arrangement of multiple rows of scales 213 can retain impurities in the water while preventing fluid stagnation. This expands the impurity accumulation space, preventing impurities from quickly clogging the surface of the grids 211 and reducing the grid's efficiency. The cleaning frequency of 211 is adjusted. Opening the electric gate 210 opens the square trough 215. When the high-pressure water gun is used to flush the grid plate 211 from above, the accumulated impurities can fall into the waste collection tank 209 through the square trough 215. The precipitated water can be filtered through the hole 216 and enter the aeration tank 301 through the second drain pipe 208. Since the waste collection tank 209 has a snap-fit ​​structure, it can be easily removed to clean the impurities. At the same time, through the establishment of the second drain pipe 208, when a grid plate 211 is abnormally blocked and the liquid level rises rapidly, the electric gate 210 can be opened, and the liquid can enter the aeration tank 301 through the second drain pipe 208, thus creating a drainage path and providing a buffer time for emergency operations.

[0047] Reference Figure 7In a preferred embodiment, the reaction mechanism 4 includes a mixing chamber 401, which is connected to a three-way pipe 305. A motor 403 is installed at the top of the mixing chamber 401, and the output end of the motor 403 passes through the mixing chamber 401 and is connected to a stirrer 406. The inner wall of the mixing chamber 401 is lined with a built-in heater 402.

[0048] Reference Figure 7 and Figure 8 In a preferred embodiment, an exhaust pipe 405 is connected to the inner wall of the top of the mixing chamber 401, and one end of the exhaust pipe 405 is tightly connected to an exhaust fan 404. Multiple partitions 412 are fixedly connected at equal intervals to the inner wall of the mixing chamber 401, and the multiple partitions 412 are close to the bottom of the mixing chamber 401. Each partition 412 is hollow, and multiple ozone filling pipes 411 are respectively arranged in each partition 412. The output end of each ozone filling pipe 411 passes through the bottom end of the partition 412, and a pressure sensing plate 414 is attached to the bottom end of each partition 412.

[0049] Reference Figure 7 In a preferred embodiment, one end of multiple ozone-filling pipes 411 is simultaneously connected to an ozone generator 413. A two-way pipe 409 is connected to both the upper and lower parts of the inner wall of one side of the mixing chamber 401, and a three-way switching valve 407 is installed on the two-way pipe 409. A water pump 408 and a water pump 410 are respectively installed on the two branches of the three-way pipe 409. The waste liquid after aeration enters the mixing chamber 401 through a three-way pipe 305. Reaction reagents are added through port two of the three-way pipe 305 to mix with the waste liquid, and then enter the mixing chamber 401, increasing the liquid level from top to bottom. During the liquid level increase, when the liquid surface contacts the pressure sensing plate 414 at the corresponding position, the ozone-filling pipe 411 in the corresponding partition 412 is oxygenated. As the water level completely exceeds all partitions 412, within the stirring range of the stirrer 406, after stirring and heating, the ozone is produced. After the chemical reagents, ozone, and waste liquid are mixed, the mixture is discharged through the three-way pipe 409. Throughout the process, the amount of ozone used can be controlled by the cooperation of the pressure sensing plate 414 and the ozone oxygenation pipe 411, avoiding ozone waste and reducing costs. At the same time, the inverted ozone oxygenation pipe 411 is less prone to blockage. In addition, the continuous suction of the vacuum pump 404 can simultaneously remove the odor generated during the reaction, greatly optimizing the odor removal efficiency of the waste liquid. With the structure of the three-way pipe 409, the flow path can be switched by the three-way switching valve 407. If the waste liquid flows from top to bottom, an external circulation pipe is established, which is suitable for situations with many impurities and insufficient oxygenation. If the waste liquid flows from bottom to outside, the residual waste liquid at the bottom of the mixing chamber 401 can be completely extracted to avoid waste liquid accumulation. If the waste liquid flows from top to outside, it is the normal drainage path.

[0050] Reference Figure 9 An environmentally friendly treatment process for cleaning waste liquid from chemical reaction vessels includes the following specific steps:

[0051] S1: Water quality testing and pH adjustment: Waste liquid enters transition chamber 201, where waste liquid water quality testing is completed, and appropriate pH adjusters are added to neutralize the pH of the waste liquid.

[0052] S2: Multi-stage filtration: The water flow rate is regulated by water pump 203. Waste liquid enters the filter chamber 206 for multi-stage filtration to remove suspended solids and floating matter from the waste liquid.

[0053] S3: Aeration treatment: The filtered waste liquid enters the aeration tank 301 through the drain pipe 207 for aeration treatment, so that the waste liquid can fully contact with oxygen, maintain a certain dissolved oxygen concentration, and reduce the chemical oxygen demand (COD) and biochemical oxygen demand (BOD).

[0054] S4: Ozone oxidation treatment: The aerated waste liquid is mixed with flocculant and coagulant aid through the three-way pipe 305, and then enters the mixing chamber 401 for ozone oxidation treatment.

[0055] S5: Secondary filtration: The waste liquid is filtered out of the residue through secondary filtration and then discharged.

[0056] Working Principle: When the cleaning waste liquid enters the aeration tank 301 through the filter mechanism 2, it first enters the gap between the aeration tank 301 and the diversion chamber 307. As the liquid level continues to rise until it is higher than the diversion chamber 307, the waste liquid enters the diversion chamber 307 from the serrated edge 310 and accumulates inside. Under the action of the submersible pump 314, the waste liquid in the diversion chamber 307 is continuously discharged back into the gap between the aeration tank 301 and the diversion chamber 307. This creates a liquid flow path in the static aeration tank 301. The filter screen 313 protects the submersible pump 314 to prevent the waste generated by sedimentation from clogging it. Since the aeration pipes 309 are distributed throughout the diversion chamber 307 and the aeration tank 301, the waste liquid in the flowing state... While ensuring continuous contact between the liquid and the aeration pipe 309, it helps optimize aeration efficiency and reduce the aeration time. The foam generated during aeration will float and move to the top of the diversion chamber 307 along the flow path of the liquid from the outside to the inside. Based on the setting of the filter screen 312 at the top of the diversion chamber 307, the foam can be adhered to ensure that the foam is concentrated and accumulated above the diversion chamber 307. At this time, the water in the water storage tank 303 above the foam is evenly sprayed onto the foam through multiple high-pressure nozzles 315. The water pressure generated can break the foam, and the serrated edge 310 can also break some of the foam in the flow process. Thus, while ensuring aeration efficiency, the amount of foam generated can be reduced. At the same time, when breaking the foam, the edge foam is continuously guided to the middle position to avoid the decline of the external drainage quality and environmental pollution.

[0057] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An environmentally friendly treatment device for cleaning waste liquid from a chemical reactor, comprising a filtration mechanism (2), an aeration mechanism (3), and a reaction mechanism (4), characterized in that, The filtration mechanism (2), aeration mechanism (3) and reaction mechanism (4) are connected in sequence, and a liquid inlet pipe (1) is provided on one side of the filtration mechanism (2). The input end of the liquid inlet pipe (1) is connected to the waste discharge port of the external reaction vessel. The aeration mechanism (3) includes an aeration tank (301), and a partition plate (308) is fixedly connected to the inner wall of the aeration tank (301). Multiple aeration pipes (309) are equidistantly arranged at the bottom end of the partition plate (308), and the output ends of the multiple aeration pipes (309) pass through the partition plate (308) simultaneously. The input ends of the multiple aeration pipes (309) are simultaneously connected to an aerator (311). A diversion chamber (307) is fixedly connected to the outer wall of the top of the partition plate (308), and the top height of the diversion chamber (307) is lower than that of the aeration tank. The top height of the air tank (301) is such that the outer wall of the top of the diversion chamber (307) is provided with multiple serrated edges (310), and the upper inner wall of the diversion chamber (307) is equipped with a filter screen (312). The inner walls of the diversion chamber (307) on multiple sides are respectively tightly connected with submersible water pumps (314), and the outer wall of each submersible water pump (314) is respectively fitted with a filter screen cover (313). Each filter screen cover (313) is simultaneously installed on the partition plate (308), and the output end of part of the aeration pipe (309) is located inside the diversion chamber (307). The aeration tank (301) is supported by a horizontal support (302) at its upper part, and a water storage tank (303) is installed at the top of the horizontal support (302). A sprayer (304) is installed at the bottom of the water storage tank (303), and the sprayer (304) passes through the horizontal support (302). The sprayer (304) includes multiple high-pressure nozzles (315), and the sprayer (304) is located directly above the diversion chamber (307). The filtration mechanism (2) includes a transition chamber (201), and a detection box (202) is fixedly connected to one inner wall of the transition chamber (201). The connection between the liquid inlet pipe (1) and the transition chamber (201) is located inside the detection box (202). A liquid passage pipe (204) is tightly connected to the other inner wall of the transition chamber (201), and a water pump (203) is installed on the liquid passage pipe (204). The output end of the liquid-passing pipe (204) is tightly connected to the filter chamber (206), and multiple grid plates (211) are obliquely and equidistantly arranged on the inner wall of the filter chamber (206). The diameter of the multiple grid plates (211) decreases from the outside to the inside. A partition plate (205) is fixedly connected to the outer wall on the same side of each grid plate (211). The outer wall of the partition plate (205) is connected to the inner wall of the filter chamber (206), and the top of the partition plate (205) is flush with the top of the filter chamber (206). A triangular through groove (217) is provided through each partition plate (205). Each of the grid plates (211) has a side support plate (218) fixedly connected to the inner wall of the other side, and the outer wall of the side support plate (218) is connected to the inner wall of the filter chamber (206). An inclined guide plate (212) is laid between adjacent grid plates (211), and multiple rows of scales (213) are equidistantly arranged on the outer surface of the inclined guide plate (212). Two adjacent rows of scales (213) are staggered. A pad plate (214) is provided on the back of each grid plate (211), and the pad plate (214) and the inclined guide plate (212) are staggered. The connection between the liquid inlet pipe (204) and the filter chamber (206) is located within the outermost grid plate (211). A drain pipe (207) is connected to one inner wall of the filter chamber (206), and the drain pipe (207) is connected to the aeration tank (301). The connection between the drain pipe (207) and the filter chamber (206) is located within the innermost grid plate (211). A square trough (215) is provided through the bottom of the filter chamber (206). (215) Located on one side of multiple grid plates (211), the filter chamber (206) is provided with an electric gate (210) on one side, and the electric gate (210) is used to block the square trough (215). The bottom end of the square trough (215) is connected to a waste collection tank (209), and a drain pipe (208) is connected to the inner wall of one side of the waste collection tank (209). The drain pipe (208) is connected to the aeration tank (301) at the same time, and multiple holes (216) are provided at the connection between the two.

2. The environmentally friendly treatment device for chemical reactor cleaning waste liquid according to claim 1, characterized in that, A three-way pipe (305) is tightly connected to one side of the inner wall of the aeration tank (301), and one port of the three-way pipe (305) extends into the bottom of the aeration tank (301). The second port of the three-way pipe (305) is connected to an external feeder, and the third port of the three-way pipe (305) is connected to the reaction mechanism (4). A water pump (306) is installed on the three-way pipe (305) and between the first and third ports.

3. The environmentally friendly treatment device for chemical reactor cleaning waste liquid according to claim 2, characterized in that, The reaction mechanism (4) includes a mixing chamber (401), and the mixing chamber (401) is connected to a three-way pipe (305). A motor (403) is installed at the top of the mixing chamber (401), and the output end of the motor (403) passes through the mixing chamber (401) and is connected to a stirrer (406). The inner wall of the mixing chamber (401) is lined with a built-in heater (402).

4. The environmentally friendly treatment device for cleaning waste liquid from a chemical reactor according to claim 3, characterized in that, The mixing chamber (401) has an exhaust pipe (405) connected to the top inner wall, and one end of the exhaust pipe (405) is tightly connected to an exhaust fan (404). The mixing chamber (401) has multiple partitions (412) fixedly connected at equal intervals on its inner wall, and the multiple partitions (412) are close to the bottom of the mixing chamber (401). Each partition (412) is hollow, and each partition (412) is provided with multiple ozone filling pipes (411). The output end of each ozone filling pipe (411) passes through the bottom end of the partition (412), and each partition (412) has a pressure sensing plate (414) attached to the bottom end.

5. The environmentally friendly treatment device for cleaning waste liquid from a chemical reactor according to claim 4, characterized in that, One end of each of the multiple ozone filling pipes (411) is connected to an ozone generator (413). The upper and lower parts of the inner wall of one side of the mixing chamber (401) are connected to a three-way pipe (409), and a three-way switching valve (407) is installed on the three-way pipe (409). A water pump (408) and a water pump (410) are respectively installed on the two branches of the three-way pipe (409).

6. An environmentally friendly treatment process for cleaning waste liquid from chemical reactors, applied to the environmentally friendly treatment device for cleaning waste liquid from chemical reactors as described in claim 5, characterized in that, The specific steps include the following: S1: Water quality testing and pH adjustment: Waste liquid enters the transition chamber (201), completes waste liquid water quality testing, adds appropriate pH adjusters, and neutralizes the pH of the waste liquid; S2: Multi-stage filtration: The water inflow is regulated by water pump 1 (203), and the waste liquid enters the filter chamber (206) for multi-stage filtration to remove suspended solids and floating matter in the waste liquid; S3: Aeration treatment: The filtered waste liquid enters the aeration tank (301) through the drain pipe (207) for aeration treatment, so that the waste liquid can fully contact with oxygen, maintain a certain dissolved oxygen concentration, and reduce chemical oxygen demand (COD) and biochemical oxygen demand (BOD). S4: Ozone oxidation treatment: The waste liquid after aeration is mixed with flocculant and coagulant aid through the three-way pipe (305) and then enters the mixing chamber (401) for ozone oxidation treatment. S5: Secondary filtration: The waste liquid is filtered out of the residue through secondary filtration and then discharged.

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