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

Abstract

The environment-friendly treatment device comprises a filtering mechanism, an aeration mechanism and a reaction mechanism, the filtering mechanism, the aeration mechanism and the reaction mechanism are connected in sequence, a liquid inlet pipe is arranged on one side of the filtering mechanism, and the input end of the liquid inlet pipe is connected with a waste discharge port of an external reaction kettle; the aeration mechanism comprises an aeration tank, the inner wall of the aeration tank is fixedly connected with a second partition plate, a plurality of aeration pipelines are arranged at the bottom end of the second partition plate at equal intervals, the output ends of the aeration pipelines penetrate through the second partition plate at the same time, and the input ends of the aeration pipelines are connected with an aeration machine at the same time. The environment-friendly treatment device for the chemical reaction kettle cleaning waste liquid and the treatment process have the advantages that the aeration efficiency can be guaranteed, meanwhile, the foam generation amount is reduced, meanwhile, the edge foam is continuously guided to the middle position, the aeration efficiency is improved, and the treatment efficiency is improved. And discharged water quality reduction and environmental pollution are avoided.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, and in particular to an environmentally friendly treatment device and a treatment process for chemical reactor cleaning waste liquid. Background Art

[0002] If the waste liquid from chemical reactor cleaning is discharged directly, the chemicals in the waste liquid will cause serious pollution to the water body and affect the survival of aquatic organisms. It will also lead to eutrophication of the water body and algae growth, and eventually lead to water quality deterioration. In order to avoid the harm of the cleaning waste liquid to the ecological environment, it is necessary to carry out environmental protection treatment before discharging the cleaning waste liquid.

[0003] The environmental treatment process of cleaning wastewater generally includes filtration treatment, aeration treatment and chemical reaction treatment. During the aeration treatment process, since the surfactant in the sewage easily forms foam under aeration conditions, a large amount of foam accumulated in the aeration tank may cause environmental pollution, reduced aeration efficiency and reduced outflow water quality. In order to reduce the generation of foam, the aeration volume is generally reduced, but such operation will also lead to a decrease in aeration efficiency, which is not conducive to the environmental treatment of sewage. Summary of the invention

[0004] The present invention discloses an environmentally friendly treatment device and treatment process for chemical reactor cleaning waste liquid, aiming to solve the technical problem that the surfactant in the sewage easily forms foam under aeration conditions, and a large amount of foam accumulates in the aeration tank, which may cause environmental pollution, reduced aeration efficiency and reduced outflow water quality. In order to reduce the generation of foam, the aeration volume is generally reduced, but such operation will also lead to reduced aeration efficiency, which is not conducive to the environmentally friendly treatment of sewage.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An environmentally friendly treatment device for cleaning waste liquid from a chemical reactor, comprising a filtering mechanism, an aeration mechanism and a reaction mechanism, wherein the filtering mechanism, the aeration mechanism and the reaction mechanism are connected in sequence, and a liquid inlet pipe is provided on one side of the filtering mechanism, and the input end of the liquid inlet pipe is connected to the waste outlet of an external reactor;

[0007] The aeration mechanism includes an aeration tank, and the inner wall of the aeration tank is fixedly connected to a partition 2, a plurality of aeration pipes are equidistantly arranged at the bottom end of the partition 2, and the output ends of the plurality of aeration pipes simultaneously pass through the partition 2, and the input ends of the plurality of aeration pipes are simultaneously connected to an aerator, a drainage bin is fixedly connected to the top outer wall of the partition 2, and the top height of the drainage bin is lower than the top height of the aeration tank, a plurality of serrated edges are arranged on the top outer wall of the drainage bin, and a filter screen 1 is installed on the upper inner wall of the drainage bin, multiple side inner walls of the drainage bin are respectively tightly connected to submersible water pumps, and the outer wall of each submersible water pump is respectively sleeved with a filter screen cover, and each of the filter screen covers is simultaneously installed on the partition 2, and the output ends of some aeration pipes are located in the drainage bin;

[0008] A horizontal bracket is disposed across the upper portion of the aeration tank, and a water storage tank is installed at the top of the horizontal bracket. A sprayer is installed at the bottom of the water storage tank, and the sprayer passes through the horizontal bracket. The sprayer includes a plurality of high-pressure spray heads, and the sprayer is located directly above the drainage bin.

[0009] A tee pipe 1 is tightly connected to the inner wall of one side of the aeration tank, and a port 1 of the tee pipe 1 extends into the bottom end of the aeration tank, a port 2 of the tee pipe 1 is connected to an external feeder, and a port 3 of the tee pipe 1 is connected to a reaction mechanism, and a water pump 2 is installed on the tee pipe 1 and between the port 1 and the port 3.

[0010] By providing an aeration mechanism, when the cleaning waste liquid enters the aeration tank through the filtering mechanism, it will first enter the gap between the aeration tank and the drainage bin. When the liquid level continues to rise until it is higher than the drainage bin, the waste liquid will enter the drainage bin from the position of the serrated edge. Under the action of the submerged water pump, a liquid flow path is formed in the static aeration tank. Thus, the waste liquid in the flowing state is conducive to optimizing the aeration efficiency and reducing the time required for aeration while ensuring continuous contact with the aeration pipe. The foam generated during the aeration process will float and move to the top of the drainage bin along with the flow of the liquid along the flow path from the outside to the inside. Based on the setting of the filter screen 1 at the top of the drainage bin, the foam can be adhered. At this time, the water in the water storage tank above the foam is evenly sprayed onto the foam through multiple high-pressure nozzles. The generated water pressure can break the foam. At the same time, the serrated edge can also break part of the foam in the flow process. Therefore, the amount of foam generated can be reduced while ensuring the aeration efficiency. At the same time, when the foam is broken, the edge foam is continuously guided to the middle position to avoid the deterioration of the drainage quality and environmental pollution.

[0011] In a preferred solution, the filtering mechanism includes a transition chamber, and a detection box is fixedly connected to the inner wall of one side of the transition chamber, the connection between the liquid inlet pipe and the transition chamber is located in the detection box, and the inner wall of the other side of the transition chamber is tightly connected to a liquid pipe, and a water pump is installed on the liquid pipe;

[0012] The output end of the liquid passage pipe is closely connected to the filter bin, and the inner wall of the filter bin is obliquely and equidistantly provided with a plurality of grid plates, the diameters of the plurality of grid plates are arranged in a decreasing manner from the outside to the inner hole, and the outer wall of each grid plate on the same side is respectively fixedly connected with a partition plate 1, the outer wall of the partition plate 1 is simultaneously connected to the inner wall of the filter bin, and the top of the partition plate 1 is flush with the top of the filter bin, and each of the partition plates 1 is respectively penetrated with a triangular through groove;

[0013] The inner wall of the other side of each grid plate is respectively fixedly connected with a side support plate, and the outer wall of the side support plate is simultaneously connected with the inner wall of the filter bin, 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, and the scales of two adjacent rows are staggered, and a pad is respectively arranged on the back of each grid plate, and the pad and the inclined guide are staggeredly connected;

[0014] The connection between the liquid-passing pipe and the filter bin is located within the setting range of the outermost grid plate. A drainage pipe 1 is connected to the inner wall of one side of the filter bin, and the drainage pipe 1 is connected to the aeration tank. The connection between the drainage pipe 1 and the filter bin is located within the setting range of the innermost grid plate. A square leakage groove is penetrated through the bottom end of the filter bin, and the square leakage groove is located on one side of multiple grid plates. An electric gate is provided on one side of the filter bin, and the electric gate can block the square leakage groove. A waste collecting groove is clamped at the bottom end of the square leakage groove, and a drainage pipe 2 is clamped on the inner wall of one side of the waste collecting groove. The drainage pipe 2 is also connected to the aeration tank, and a plurality of leakage holes are provided at the connection between the two.

[0015] A filtering mechanism is provided, in which a plurality of gratings with different precisions are arranged horizontally, and the plurality of gratings are separated by partition plates 1 and side support plates, and a water flow path is established at the triangular through grooves, thereby achieving the goal of reducing the volume of the filter bin while extending the water flow distance between adjacent gratings, thereby expanding the impurity accumulation space, preventing impurities from quickly clogging the grating surface, and reducing the frequency of grating cleaning. The square leakage groove can be opened by opening the electric gate, and when the grating is flushed from above with a high-pressure water gun, the accumulated impurities can fall from the square leakage groove into the waste collecting tank, which is convenient for removing the impurities for cleaning. At the same time, by establishing the second drainage pipe, a leakage path can also be constructed to provide a buffer time for emergency operations.

[0016] In a preferred embodiment, the reaction mechanism includes a mixing chamber, and the mixing chamber is 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, and the inner wall of the mixing chamber is paved with a built-in heater;

[0017] The top inner wall of the mixing bin is connected with an exhaust pipe, and one end of the exhaust pipe is tightly connected with an exhaust fan, and the inner wall of the mixing bin is fixedly connected with a plurality of partitions three at equal intervals, and the plurality of partitions three are close to the bottom of the mixing bin, each of the partitions three is hollow, and each of the partitions three is respectively provided with a plurality of ozone oxygenation pipes, and the output end of each of the ozone oxygenation pipes passes through the bottom end of the partition three, and the bottom end of each partition three is respectively fitted with a pressure sensing plate;

[0018] One end of the plurality of ozone oxygenation pipes is simultaneously connected to the 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 2, and a three-way switching valve is installed on the three-way pipe 2, and water pumps 3 and 4 are installed on the two branches of the three-way pipe 2 respectively;

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

[0020] S1: Test water quality and adjust pH: The waste liquid enters the transition chamber, completes the waste liquid water quality test, and adds the corresponding acid-base regulator to neutralize the waste liquid pH;

[0021] S2: Multi-stage filtration: The water inlet is regulated by a water pump, and the waste liquid enters the filter chamber for multi-stage filtration to remove suspended solids and floating objects in the waste liquid;

[0022] S3: Aeration treatment: The filtered waste liquid enters the aeration tank through the drainage pipe for aeration treatment, so that the waste liquid is fully in contact with oxygen, so that the waste liquid maintains a certain dissolved oxygen concentration, and reduces the chemical oxygen demand (COD) and biochemical oxygen demand (BOD);

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

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

[0025] By setting up a reaction mechanism, the waste liquid after aeration enters the mixing chamber through three-way pipe one. During the whole process, based on the cooperation of the pressure sensing plate and the ozone oxygenation pipeline, the ozone usage can be controlled to avoid ozone waste and reduce cost expenditure. At the same time, the inverted ozone oxygenation pipeline is not easy to cause blockage. In addition, since the vacuum pump continuously pumps air, the odor generated in the reaction process can be synchronously extracted, which optimizes the deodorization efficiency of the waste liquid to the greatest extent. Under the setting structure of three-way pipe two, the flow path can be switched through the three-way switching valve. If the waste liquid flows from top to bottom, an external circulation pipeline is established, which is suitable for use in situations with many impurities and insufficient oxygenation. If the waste liquid flows from the bottom to the outside, the residual waste liquid at the bottom of the mixing chamber can be completely extracted to avoid waste liquid accumulation. If the waste liquid flows from the top to the outside, it is a normal drainage path.

[0026] As can be seen from the above, an environmental protection treatment device for cleaning waste liquid of a chemical reactor comprises a filtering mechanism, an aeration mechanism and a reaction mechanism, wherein the filtering mechanism, the aeration mechanism and the reaction mechanism are connected in sequence, and a liquid inlet pipe is arranged on one side of the filtering mechanism, and the input end of the liquid inlet pipe is connected to the waste outlet of an external reactor; the aeration mechanism comprises an aeration tank, and a partition plate 2 is fixedly connected to the inner wall of the aeration tank, a plurality of aeration pipes are equidistantly arranged at the bottom end of the partition plate 2, and the output ends of the plurality of aeration pipes pass through the partition plate 2 at the same time, the input ends of the plurality of aeration pipes are connected to an aerator at the same time, a drainage bin is fixedly connected to the outer wall of the top end of the partition plate 2, and the drainage bin is fixedly connected to the outer wall of the top end of the partition plate 2, and the drainage bin is fixedly connected to the inner wall ... The top height of the bin is lower than the top height of the aeration tank, the top outer wall of the drainage bin is provided with a plurality of serrated edges, and a filter screen 1 is installed on the upper inner wall of the drainage bin, the inner walls on multiple sides of the drainage bin are tightly connected with submersible water pumps, and the outer wall of each submersible water pump is respectively sleeved with a filter screen cover, each of the filter screen covers is simultaneously installed on the partition 2, and the output end of part of the aeration pipe is located in the drainage bin; the upper part of the aeration tank is spanned by a cross bracket, and a water storage tank is installed on the top of the cross bracket, a sprayer is installed at the bottom of the water storage tank, and the sprayer passes through the cross bracket, the sprayer includes a plurality of high-pressure nozzles, and the sprayer is located directly above the drainage bin. The environmental protection treatment device and treatment process for chemical reactor cleaning waste liquid provided by the present invention have the technical effect of reducing the amount of foam generated while ensuring the aeration efficiency, and continuously guiding the edge foam to the middle position to avoid the deterioration of the external water quality and environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

[0030] Figure 4 The present invention provides a sectional view of the side structure of the shell of an environmentally friendly treatment device for cleaning waste liquid of a chemical reactor.

[0031] Figure 5 A side view of the shell structure of an environmentally friendly treatment device for chemical reactor cleaning waste liquid proposed by the present invention.

[0032] Figure 6 The present invention provides a side view of the shell structure of an environmentally friendly treatment device for cleaning waste liquid from a chemical reactor.

[0033] Figure 7 The present invention provides a side view of the shell structure of an environmentally friendly treatment device for cleaning waste liquid from a chemical reactor.

[0034] Figure 8 A side view of the shell structure of an environmentally friendly treatment device for chemical reactor cleaning waste liquid proposed by the present invention.

[0035] Fig. 9 The present invention provides a specific flow chart of an environmentally friendly treatment process for chemical reactor cleaning waste liquid.

[0036] In the figure: 1, liquid inlet pipe; 2, filtering mechanism; 3, aeration mechanism; 4, reaction mechanism; 201, transition chamber; 202, detection box; 203, water pump 1; 204, liquid pipe; 205, partition 1; 206, filtering chamber; 207, drainage pipe 1; 208, drainage pipe 2; 209, waste collection tank; 210, electric gate; 211, grid plate; 212, inclined guide plate; 213, scales; 214, pad; 215, square leakage groove; 216, leakage hole; 217, triangular through groove; 218, side support plate; 301, aeration tank; 302, horizontal bracket; 303, water storage tank; 304, sprinkler; 305, Three-way pipe one; 306, water pump two; 307, drainage chamber; 308, partition two; 309, aeration pipe; 310, serrated edge; 311, aerator; 312, filter screen one; 313, filter screen cover; 314, submersible water pump; 315, high-pressure nozzle; 401, mixing chamber; 402, built-in heater; 403, motor; 404, vacuum pump; 405, vacuum pipe; 406, agitator; 407, three-way switching valve; 408, water pump three; 409, three-way pipe two; 410, water pump four; 411, ozone oxygenation pipe; 412, partition three; 413, ozone generator; 414, pressure sensing plate. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0038] The invention discloses an environmentally friendly treatment device and a treatment process for chemical reactor cleaning waste liquid, which are mainly applied to the scenario of chemical reactor cleaning waste liquid treatment.

[0039] Reference Figure 1-Figure 3 , an environmental protection treatment device for chemical reactor cleaning waste liquid, comprising a filtering mechanism 2, an aeration mechanism 3 and a reaction mechanism 4, wherein the filtering mechanism 2, the aeration mechanism 3 and the reaction mechanism 4 are sequentially connected, and a liquid inlet pipe 1 is provided on one side of the filtering mechanism 2, and the input end of the liquid inlet pipe 1 is connected to the waste outlet of the external reactor;

[0040] The aeration mechanism 3 includes an aeration tank 301, and the inner wall of the aeration tank 301 is fixedly connected to a partition 2 308, and the bottom end of the partition 2 308 is equidistantly provided with a plurality of aeration pipes 309, and the output ends of the plurality of aeration pipes 309 simultaneously pass through the partition 2 308, and the input ends of the plurality of aeration pipes 309 are simultaneously connected to an aerator 311, and the top outer wall of the partition 2 308 is fixedly connected to a drainage bin 307, and the top height of the drainage bin 307 is lower than the aeration bin 311. The top height of the pool 301, the top outer wall of the drainage bin 307 is provided with a plurality of serrated edges 310, and a filter screen 1 312 is installed on the upper inner wall of the drainage bin 307, and the inner walls on multiple sides of the drainage bin 307 are tightly connected with submerged water pumps 314, and the outer wall of each submerged water pump 314 is respectively sleeved with a filter screen cover 313, and each filter screen cover 313 is installed on the partition 2 308 at the same time, and the output end of a part of the aeration pipe 309 is located in the drainage bin 307;

[0041] A cross bracket 302 is provided across the upper part of the aeration tank 301, and a water storage tank 303 is installed at the top of the cross bracket 302. A sprayer 304 is installed at the bottom of the water storage tank 303, and the sprayer 304 passes through the cross bracket 302. The sprayer 304 includes a plurality of high-pressure nozzles 315, and the sprayer 304 is located directly above the drainage bin 307. When the cleaning waste liquid passes through the filtering mechanism 2 and enters the aeration tank 301, it will first enter the gap between the aeration tank 301 and the drainage bin 307. The level of the drainage chamber 307 continues to rise until it is higher than the drainage chamber 307. The waste liquid will enter the drainage chamber 307 from the position of the sawtooth edge 310 and accumulate inside the drainage chamber 307. Under the action of the submerged water pump 314, the waste liquid in the drainage chamber 307 will be continuously discharged to the gap between the aeration tank 301 and the drainage chamber 307, thereby forming a flow path for the liquid in the static aeration tank 301. The submerged water pump 314 can be protected by the setting of the filter cover 313 to avoid sedimentation. The waste generated by the sedimentation blocks the submerged water pump 314. Since the aeration pipe 309 is spread throughout the drainage bin 307 and the aeration tank 301, the waste liquid in the flowing state can ensure continuous contact with the aeration pipe 309 while optimizing the aeration efficiency and reducing the time required for aeration. The foam generated during the aeration process will float and move to the top of the drainage bin 307 along with the water flow as the liquid flows from the outside to the inside. Based on the setting of the filter screen 312 at the top of the drainage bin 307, the foam can be adhered to ensure that the foam is concentrated and accumulated above the drainage bin 307. At this time, the water in the water storage tank 303 located above the foam is evenly sprayed onto the foam through multiple high-pressure nozzles 315. The generated water pressure can break the foam. At the same time, the serrated edge 310 can also break some of the foam in the flow process, thereby ensuring the aeration efficiency while reducing the amount of foam generated. At the same time, when the foam is broken, the edge foam is continuously guided to the middle position to avoid the deterioration of the outflow water quality and environmental pollution.

[0042] Reference Figure 2 In a preferred embodiment, a tee pipe 305 is tightly connected to the inner wall of one side of the aeration tank 301, and port 1 of the tee pipe 305 extends into the bottom end of the aeration tank 301, port 2 of the tee pipe 305 is connected to an external feeder, port 3 of the tee pipe 305 is connected to the reaction mechanism 4, and a water pump 2 306 is installed on the tee pipe 305 and between port 1 and port 3.

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

[0044] Reference Figure 4-Figure 6 In a preferred embodiment, the output end of the liquid passage 204 is tightly connected to the filter chamber 206, and the inner wall of the filter chamber 206 is obliquely and equidistantly provided with a plurality of grating plates 211, the diameters of the plurality of grating plates 211 are arranged to decrease from the outside to the inner hole, and the outer wall on the same side of each grating plate 211 is fixedly connected with a partition plate 205, the outer wall of the partition plate 205 is connected to the inner wall of the filter chamber 206 at the same time, and the top of the partition plate 205 is flush with the top of the filter chamber 206, and each partition plate 205 is respectively penetrated by a triangular through groove 217.

[0045] Reference Figure 4-Figure 6 In a preferred embodiment, the inner wall of the other side of each grating 211 is fixedly connected with a side support plate 218, and the outer wall of the side support plate 218 is connected to the inner wall of the filter bin 206 at the same time. An inclined guide plate 212 is laid between adjacent gratings 211, and a plurality of rows of scales 213 are equidistantly arranged on the outer surface of the inclined guide plate 212, and the scales 213 of two adjacent rows are staggered. A pad 214 is provided on the back of each grating 211, and the pad 214 and the inclined guide plate 212 are staggered.

[0046] Reference Figure 4-Figure 6In a preferred embodiment, the connection between the liquid passage 204 and the filter chamber 206 is located within the setting range of the outermost grid plate 211, a drainage pipe 207 is connected to the inner wall of one side of the filter chamber 206, and the drainage pipe 207 is connected to the aeration tank 301, and the connection between the drainage pipe 207 and the filter chamber 206 is located within the setting range of the innermost grid plate 211, a square leakage groove 215 is penetrated at the bottom end of the filter chamber 206, and the square leakage groove 215 is located on one side of the plurality of 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 leakage groove 215, and the bottom end of the square leakage groove 215 is clamped with The waste collecting tank 209 is provided with a drain pipe 208 on one side of the inner wall of the waste collecting tank 209. The drain pipe 208 is connected to the aeration tank 301 at the same time, and a plurality of leak holes 216 are arranged at the connection between the two. In the filtering mechanism 2, waste water enters the transition chamber 201 from the liquid inlet pipe 1, and part of the waste water can enter first, so that water can be stored in the detection box 202. After the water quality of a fixed amount of stored water is tested, the water can be passed into the transition chamber 201. Since the amount of water in the transition chamber 201 remains unchanged, the amount of the neutralizing drug added can be conveniently adjusted. The setting of the water pump 203 can control the speed at which the waste water enters the filter chamber 201 by adjusting the drainage volume, thereby ensuring the filtering effect. In the embodiment of the present invention, multiple grating plates 211 with different precisions are arranged horizontally, and multiple grating plates 211 are separated by the arrangement of partition plate 205 and side support plate 218, and a water flow path is established at triangular through groove 217, thereby reducing the volume of filter chamber 206 and extending the water flow distance between adjacent grating plates 211. When water flows from pad 214 to inclined guide plate 212, based on the oblique arrangement of inclined guide plate 212 and the staggered arrangement of multiple rows of scales 213, impurities in water can be retained while avoiding the retention of fluid, thereby expanding the space for impurity accumulation, avoiding the impurities from quickly clogging the surface of grating plate 211, and reducing the grating. 211 cleaning frequency, and opening the electric gate 210 can open the square leakage groove 215. When the grid plate 211 is flushed from the top with a high-pressure water gun, the accumulated impurities can fall from the square leakage groove 215 to the waste collecting tank 209, and the precipitated water can be filtered by the leakage hole 216 and enter the aeration tank 301 through the drainage pipe 208. Since the waste collecting tank 209 is a snap-on structure, it can be easily removed to clean the impurities. At the same time, through the establishment of the drainage 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 drainage pipe 208 enters the aeration tank 301 to construct a leakage path, providing a buffer time for emergency operation.

[0047] Reference Figure 7In a preferred embodiment, 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 an agitator 406. The inner wall of the mixing chamber 401 is paved with a built-in heater 402.

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

[0049] Reference Figure 7 In a preferred embodiment, one end of a plurality of ozone oxygenation pipes 411 is simultaneously connected to an ozone generator 413, and the upper and lower parts of the inner wall of one side of the mixing chamber 401 are simultaneously connected to a three-way pipe 2 409, and a three-way switching valve 407 is installed on the three-way pipe 2 409, and a water pump 3 408 and a water pump 4 410 are installed on the two branches of the three-way pipe 2 409 respectively. The aerated waste liquid enters the mixing chamber 401 through the three-way pipe 1 305, and the reaction drug is added from the port 2 of the three-way pipe 1 305 to mix with the waste liquid, and then enters the mixing chamber 401, and the liquid level increases from top to bottom. During the process of increasing the liquid level, when the liquid surface contacts the pressure sensing plate 414 at the corresponding position, the ozone oxygenation pipe 411 in the corresponding partition 3 412 is oxygenated. As the water level is completely higher than all the partitions 3 412, it is preferably stirred and heated within the stirring range of the stirrer 406. After the mixing effect of the chemical, ozone and waste liquid, it is discharged from the three-way pipe 409. During the whole process, based on the cooperation of the pressure sensing plate 414 and the ozone oxygenation pipeline 411, the ozone usage can be controlled to avoid ozone waste and reduce cost expenditure. At the same time, the inverted ozone oxygenation pipeline 411 is not easy to cause blockage. In addition, since the vacuum fan 404 continuously pumps air, the odor generated in the reaction process can be synchronously extracted, which greatly optimizes the deodorization efficiency of the waste liquid. Under the setting structure of the three-way pipe 409, the flow path can be switched through the three-way switching valve 407. If the waste liquid flows from top to bottom, an external circulation pipeline is established, which is suitable for use in situations where there are many impurities and insufficient oxygenation. If the waste liquid flows from the bottom to the 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 the top to the outside, it is a normal drainage path.

[0050] Reference Fig. 9 , an environmentally friendly treatment process for chemical reactor cleaning waste liquid, comprising the following specific steps:

[0051] S1: Testing water quality and adjusting pH: The waste liquid enters the transition chamber 201, completes the waste liquid water quality test, and adds the corresponding acid-base regulator to neutralize the waste liquid pH;

[0052] S2: Multi-stage filtration: The water inflow is regulated by a water pump 203, and the waste liquid enters the filter chamber 206 for multi-stage filtration to remove suspended solids and floating objects in 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 is fully in contact with oxygen, so that the waste liquid maintains a certain dissolved oxygen concentration, and reduces the chemical oxygen demand COD and biochemical oxygen demand BOD;

[0054] 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;

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

[0056] Working principle: When the cleaning waste liquid passes through the filtering mechanism 2 and enters the aeration tank 301, it will first enter the gap between the aeration tank 301 and the drainage bin 307. When the liquid level continues to rise until it is higher than the drainage bin 307, the waste liquid will enter the drainage bin 307 from the position of the serrated edge 310 and accumulate inside the drainage bin 307. Under the action of the submerged water pump 314, the waste liquid in the drainage bin 307 will be continuously discharged to the gap between the aeration tank 301 and the drainage bin 307 again, thereby forming a liquid flow path in the static aeration tank 301. The submerged water pump 314 can be protected by the setting of the filter cover 313 to prevent the waste generated by the precipitation from clogging the submerged water pump 314. Since the aeration pipe 309 is spread throughout the drainage bin 307 and the aeration tank 301, the waste in the flowing state While ensuring continuous contact with the aeration pipe 309, the liquid is conducive to optimizing the aeration efficiency and reducing the time required for aeration. The foam generated during the aeration process will float and move to the top of the drainage bin 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 drainage bin 307, the foam can be adhered to ensure that the foam is concentrated and accumulated above the drainage bin 307. At this time, the water in the water storage tank 303 located above the foam is evenly sprayed onto the foam through multiple high-pressure nozzles 315. The water pressure generated can break the foam. At the same time, the serrated edge 310 can also break some of the foam in the flow process. This can reduce the amount of foam generated while ensuring the aeration efficiency. At the same time, when the foam is broken, the edge foam is continuously guided to the middle position to avoid the deterioration of the outflow water quality and environmental pollution.

[0057] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An environmentally friendly treatment device for waste liquid from cleaning a chemical reactor, comprising a filtering mechanism (2), an aeration mechanism (3) and a reaction mechanism (4), characterized in that: The filtering mechanism (2), the aeration mechanism (3) and the reaction mechanism (4) are connected in sequence, and a liquid inlet pipe (1) is provided on one side of the filtering mechanism (2), and the input end of the liquid inlet pipe (1) is connected to the waste outlet of the external reactor; The aeration mechanism (3) comprises an aeration tank (301), and the inner wall of the aeration tank (301) is fixedly connected to a partition plate 2 (308), a plurality of aeration pipes (309) are equidistantly arranged at the bottom end of the partition plate 2 (308), and the output ends of the plurality of aeration pipes (309) simultaneously pass through the partition plate 2 (308), and the input ends of the plurality of aeration pipes (309) are simultaneously connected to an aerator (311), and the top outer wall of the partition plate 2 (308) is fixedly connected to a drainage bin (307), and the top height of the drainage bin (307) is lower than the aeration bin (311). The top height of the gas pool (301), the top outer wall of the drainage chamber (307) is provided with a plurality of serrated edges (310), and the upper inner wall of the drainage chamber (307) is installed with a filter screen 1 (312), the inner walls on multiple sides of the drainage chamber (307) are respectively tightly connected with a submersible water pump (314), and the outer wall of each submersible water pump (314) is respectively sleeved with a filter screen cover (313), each of the filter screen covers (313) is simultaneously installed on the partition plate 2 (308), and the output end of a part of the aeration pipe (309) is located in the drainage chamber (307); A cross bracket (302) is disposed across the upper portion of the aeration tank (301), and a water storage tank (303) is installed at the top of the cross bracket (302). A sprayer (304) is installed at the bottom of the water storage tank (303), and the sprayer (304) passes through the cross bracket (302). The sprayer (304) includes a plurality of high-pressure nozzles (315), and the sprayer (304) is located directly above the drainage bin (307).

2. The environmental protection treatment device for chemical reactor cleaning waste liquid according to claim 1 is characterized in that: A three-way pipe (305) is tightly connected to the inner wall of one side of the aeration tank (301), and port one of the three-way pipe (305) extends into the bottom end 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 a reaction mechanism (4), and a water pump (306) is installed on the three-way pipe (305) and located between port one and port three.

3. The environmental protection treatment device for chemical reactor cleaning waste liquid according to claim 1 is characterized in that: The filtering mechanism (2) comprises a transition chamber (201), and a detection box (202) is fixedly connected to an inner wall on one side of the transition chamber (201), a connection between the liquid inlet pipe (1) and the transition chamber (201) is located inside the detection box (202), and a liquid passage pipe (204) is tightly connected to an inner wall on the other side of the transition chamber (201), and a water pump (203) is installed on the liquid passage pipe (204).

4. The environmental protection treatment device for chemical reactor cleaning waste liquid according to claim 3 is characterized in that: The output end of the liquid passage pipe (204) is tightly connected to the filter chamber (206), and the inner wall of the filter chamber (206) is provided with a plurality of grating plates (211) at equal intervals in an oblique direction, the diameters of the plurality of grating plates (211) are arranged to decrease from the outside to the inside, and the outer wall on the same side of each grating plate (211) is respectively fixedly connected to a partition plate 1 (205), the outer wall of the partition plate 1 (205) is simultaneously connected to the inner wall of the filter chamber (206), and the top of the partition plate 1 (205) is flush with the top of the filter chamber (206), and each of the partition plates 1 (205) is respectively penetrated by a triangular through groove (217).

5. The environmental protection treatment device for chemical reactor cleaning waste liquid according to claim 4 is characterized in that: The inner wall of the other side of each grid plate (211) is respectively fixedly connected with a side support plate (218), and the outer wall of the side support plate (218) is simultaneously connected to the inner wall of the filter bin (206); an inclined guide plate (212) is laid between adjacent grid plates (211), and a plurality of rows of scales (213) are equidistantly arranged on the outer surface of the inclined guide plate (212), and the scales (213) of two adjacent rows are arranged in a staggered manner; a pad plate (214) is respectively arranged on the back of each grid plate (211), and the pad plate (214) and the inclined guide plate (212) are staggeredly connected.

6. The environmental protection treatment device for chemical reactor cleaning waste liquid according to claim 5, characterized in that: The connection between the liquid passage pipe (204) and the filter chamber (206) is located within the setting range of the outermost grid plate (211); a liquid discharge pipe (207) is connected to the inner wall of one side of the filter chamber (206); the liquid discharge pipe (207) is connected to the aeration tank (301); the connection between the liquid discharge pipe (207) and the filter chamber (206) is located within the setting range of the innermost grid plate (211); a square drain groove (215) is provided through the bottom end of the filter chamber (206); and the square drain groove (215) is provided through the bottom end of the filter chamber (206). (215) is located on one side of the plurality of grid plates (211), an electric gate (210) is provided on one side of the filter bin (206), and the electric gate (210) can block the square leakage groove (215), a waste collecting groove (209) is clamped at the bottom end of the square leakage groove (215), and a drain pipe 2 (208) is clamped on the inner wall of one side of the waste collecting groove (209), and the drain pipe 2 (208) is connected to the aeration tank (301) at the same time, and a plurality of leakage holes (216) are provided at the connection between the two.

7. The environmental protection treatment device for chemical reactor cleaning waste liquid according to claim 2 is characterized in that: The reaction mechanism (4) comprises 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 an agitator (406). The inner wall of the mixing chamber (401) is paved with a built-in heater (402).

8. The environmental protection treatment device for chemical reactor cleaning waste liquid according to claim 7, characterized in that: The top inner wall of the mixing chamber (401) is connected to an exhaust pipe (405), and one end of the exhaust pipe (405) is tightly connected to an exhaust fan (404). The inner wall of the mixing chamber (401) is equidistantly and fixedly connected to a plurality of partition plates (412), and the plurality of partition plates (412) are close to the bottom of the mixing chamber (401). Each of the partition plates (412) is hollow, and each of the partition plates (412) is respectively provided with a plurality of ozone oxygenation pipes (411). The output end of each of the ozone oxygenation pipes (411) passes through the bottom end of the partition plate (412), and the bottom end of each partition plate (412) is respectively attached to a pressure sensing plate (414).

9. The environmental protection treatment device for chemical reactor cleaning waste liquid according to claim 8, characterized in that: One end of the plurality of ozone oxygenation pipes (411) is simultaneously connected to an ozone generator (413); the upper and lower parts of the inner wall of one side of the mixing chamber (401) are simultaneously connected to a three-way pipe (409); a three-way switching valve (407) is installed on the three-way pipe (409); and a water pump (408) and a water pump (410) are respectively installed on the two branches of the three-way pipe (409).

10. An environmentally friendly treatment process for waste liquid from cleaning a chemical reactor, applied to an environmentally friendly treatment device for waste liquid from cleaning a chemical reactor as claimed in claims 6 and 9, characterized in that: The specific steps include: S1: Testing water quality and adjusting pH: the waste liquid enters the transition chamber (201), completes the waste liquid water quality test, and adds the corresponding acid-base regulator to neutralize the waste liquid pH; 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 objects in the waste liquid; S3: Aeration treatment: The filtered waste liquid enters the aeration tank (301) through the drainage pipe 1 (207) for aeration treatment, so that the waste liquid is fully in contact with oxygen, so that the waste liquid maintains a certain dissolved oxygen concentration, and reduces the chemical oxygen demand (COD) and biochemical oxygen demand (BOD); S4: Ozone oxidation treatment: the aerated waste liquid is mixed with the flocculant and the coagulant aid through the three-way pipe (305), and then enters the mixing chamber (401) for ozone oxidation treatment; S5: Secondary filtration: The residue in the waste liquid is filtered out through secondary filtration and finally discharged.

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