A waste acid liquid recovery treatment device

Abstract

The application discloses a waste acid liquid recycling device, belongs to the waste acid liquid recycling technical field, and relates to a waste acid liquid recycling device, which comprises a workbench, the workbench is a three-layer structure from top to bottom, a waste acid liquid treatment tank is fixedly installed on the middle layer of the workbench, filter separation tanks and buffer water tanks are fixedly installed at the two ends of the lower layer of the workbench, respectively, a reflux tank is fixedly installed on the top layer of the workbench, and the waste acid liquid treatment tank, the filter separation tanks, the buffer water tanks and the reflux tank are connected through corresponding pipelines. It can accelerate the reaction rate of the waste acid liquid and the treatment agent, improve the treatment efficiency of the waste acid liquid, improve the separation effect of water and solid waste under the influence of gravity, detect whether the treated water quality is qualified, and finally guarantee the treatment effect of the waste acid liquid.

Description

Technical Field

[0001] This invention relates to the field of waste acid recovery technology, and more specifically, to a waste acid recovery and treatment device. Background Technology

[0002] The electroplating, PCB, and metal processing industries frequently generate large quantities of waste acid liquids during production. The main pollutants in these waste acids are heavy metals, nitrogen, COD, and phosphorus. Direct discharge of this waste acid severely pollutes water bodies, harms the human living environment, and poses a significant threat to human health. Currently, most companies choose to outsource wastewater treatment; however, this method is characterized by high costs, untimely transportation, and potential for stockpiling, which can easily disrupt normal business operations.

[0003] Currently, in common waste acid treatment processes, the treatment and separation of waste acid are usually completed in a container. Although this treatment method uses fewer devices, the waste acid and solid waste are easily not completely separated after treatment, which in turn affects the subsequent treatment effect of the waste acid in the container.

[0004] Therefore, in view of this, the existing structure is studied and improved to provide a waste acid recovery and treatment device, in order to achieve a practical purpose. Summary of the Invention

[0005] 1. Technical problems to be solved

[0006] In view of the problems existing in the prior art, the purpose of this invention is to provide a waste acid liquid recycling and treatment device, which can accelerate the reaction rate of waste acid liquid and treatment agent, improve the treatment efficiency of waste acid liquid, and improve the separation effect of water and solid waste under the influence of gravity. At the same time, it can detect whether the water quality after treatment is qualified, and ultimately ensure the treatment effect of waste acid liquid.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] A waste acid liquid recycling and treatment device includes a workbench with a three-layer structure from top to bottom. A waste acid liquid treatment tank is fixedly installed in the middle layer of the workbench. A filter separation tank and a buffer water tank are fixedly installed at both ends of the lower layer of the workbench, respectively. A reflux tank is fixedly installed in the top layer of the workbench. The waste acid liquid treatment tank, filter separation tank, buffer water tank, and reflux tank are all connected by corresponding pipelines.

[0010] The top of the waste acid treatment tank is fixedly equipped with a waste acid inlet, a treatment agent inlet, a level probe, and two stepper motors. The level probe is located at the center of the top of the waste acid treatment tank. The output shaft of each stepper motor passes through the top cover plate of the waste acid treatment tank and is connected to a stirring shaft via a coupling. Several stirring teeth are fixed on the stirring shaft. The lower half of the level probe, the stirring shaft, and the stirring teeth are all located inside the waste acid treatment tank.

[0011] A partition wall is fixedly installed in the middle of the filter separation tank. The partition wall is vertical and divides the filter separation tank into two independent filter chambers. A filter screen is fixedly installed in the middle of each independent filter chamber. A large piston plate is slidably connected inside the independent filter chamber. The large piston plate is located directly below the filter screen. A solid material collection pool is fixedly installed directly below the filter separation tank. A bracket is fixedly installed at the bottom of the workbench. The bottom end of the bracket is fixed to the bottom of the outer side of the filter separation tank.

[0012] Furthermore, the waste acid inlet is located at the top of the waste acid treatment tank near the side, and the treatment agent inlet is located at the top of the waste acid treatment tank near the other side.

[0013] Both the waste acid inlet and the treatment agent inlet are square inlets, and both are equipped with electrically controlled gate valves.

[0014] Furthermore, a vent pipe is fixedly installed at the top of the waste acid treatment tank. The vent pipe is located close to the liquid level probe, and the bottom end of the vent pipe passes through the top cover plate of the waste acid treatment tank and is fixed to the inner top of the waste acid treatment tank.

[0015] The vent pipe has an electrically controlled gate valve structure.

[0016] Furthermore, L-shaped drain pipes are fixedly installed on both sides of the bottom end of the waste acid treatment tank, and the bottom end of the waste acid treatment tank is a sloped structure, with the top of the L-shaped drain pipe at the lowest position of the slope.

[0017] The bottom end of the L-shaped drain pipe is connected to the lower middle part of the filter separation tank, and there is an electrically controlled gate valve structure in the middle of the L-shaped drain pipe.

[0018] Furthermore, the two stepper motors are respectively installed at the top of the waste acid treatment tank near the side edge, and the two stepper motors are synchronously controlled, have the same speed, and rotate in opposite directions.

[0019] Furthermore, two separation plates are fixedly installed on the inner top of the filter separation tank. The two separation plates are axially symmetrically distributed on both sides of the partition wall, and a drainage chamber is formed between the separation plates and the partition wall.

[0020] Furthermore, an L-shaped drain pipe is fixedly installed on the top side of the drainage chamber, and one end of the L-shaped drain pipe is fixed to the top of the buffer tank.

[0021] The L-shaped drain pipe has an electrically controlled valve structure.

[0022] Furthermore, a hydraulic lift is fixed at the bottom of the waste acid treatment tank and directly above the solid material collection tank. The hydraulic lift is covered with a waterproof shell, and the top of the output shaft of the hydraulic lift is fixed to the bottom of the large piston plate. A discharge trough is provided on the bottom side of the filter separation tank.

[0023] A small piston plate is slidably connected between the separation plate and the inner wall of the filter separation tank. Two No. 2 hydraulic lifts are fixedly installed at the top of the filter separation tank. The bottom end of the output shaft of the No. 2 hydraulic lift is fixed to the small piston plate. A cleaning slot is opened on the top side of the filter separation tank.

[0024] Furthermore, a pH detection probe is fixedly installed on the top of the buffer tank, and several discharge pipes with valves are fixedly installed on the side of the buffer tank.

[0025] Furthermore, a reflux pump is installed at the top of the reflux tank, a reflux pipe is fixedly installed between the inlet of the reflux pump and the top of the buffer tank, and the outlet of the reflux pump is connected to the inside of the reflux tank. An L-shaped return pipe is fixedly installed between the side of the reflux tank and the top of the waste acid treatment tank.

[0026] 3. Beneficial Effects

[0027] Compared with the prior art, the advantages of this invention are:

[0028] This solution comprises four parts for the recycling and treatment of waste acid: waste acid treatment, treated water filtration, treated water testing and discharge, and recirculation of substandard water. Waste acid treatment is completed in a waste acid treatment tank. Stirring accelerates the reaction rate between the waste acid and the treatment agent, thereby improving treatment efficiency. Treated water filtration is completed in a filtration separation tank, where the liquid flows from bottom to top. Gravity enhances the separation of water and solid waste. Treated water testing and discharge are completed in a buffer tank, where the quality of the treated water is checked and appropriate treatment is administered based on the results. Substandard water is recirculated and undergoes secondary treatment in a recirculation tank, while qualified water is discharged. This process ensures the effective treatment of the waste acid. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0030] Figure 2This is a schematic diagram of the planar structure of the present invention;

[0031] Figure 3 This is a three-dimensional structural diagram of the waste acid treatment tank in this invention;

[0032] Figure 4 This is a schematic diagram of the stirring section of the waste acid treatment tank in this invention;

[0033] Figure 5 This is a three-dimensional structural diagram of the filtration separation tank in this invention;

[0034] Figure 6 This is a schematic diagram of the internal structure of the filter separation tank in this invention;

[0035] Figure 7 This is a schematic diagram of the structure of the buffer tank and reflux tank in this invention.

[0036] Explanation of the labels in the diagram:

[0037] 1. Workbench;

[0038] 2. Waste acid treatment tank; 201. Waste acid inlet; 202. Treatment agent inlet; 203. Liquid level probe; 204. Stepper motor; 205. Stirring shaft; 206. Stirring teeth; 207. Vent pipe; 208. L-shaped drain pipe;

[0039] 3. Filter separation tank; 301. Partition wall; 302. Independent filter chamber; 303. Filter screen; 304. Large piston plate;

[0040] 305. Solid material collection tank; 3051. No. 1 hydraulic lift; 3052. Discharge chute;

[0041] 306. Stent;

[0042] 307. Separation plate; 3071. Small piston plate; 3072. No. 2 hydraulic lift; 3073. Cleaning slot;

[0043] 308. Drainage chamber; 3081. L-shaped drain pipe;

[0044] 4. Buffer water tank; 401. pH detection probe; 402. Discharge pipe with valve;

[0045] 5. Reflux tank; 501. Reflux pump; 502. Reflux pipe; 503. L-shaped return pipe. Detailed Implementation

[0046] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0047] Example 1:

[0048] Please see Figure 1 - Figure 7 A waste acid liquid recycling and treatment device includes a workbench 1, which has a three-layer structure from top to bottom. A waste acid liquid treatment tank 2 is fixedly installed in the middle layer of the workbench 1. A filter separation tank 3 and a buffer water tank 4 are fixedly installed at both ends of the lower layer of the workbench 1, respectively. A return tank 5 is fixedly installed on the top layer of the workbench 1. The waste acid liquid treatment tank 2, the filter separation tank 3, the buffer water tank 4, and the return tank 5 are all connected by corresponding pipelines.

[0049] The waste acid recycling and treatment process consists of four parts: waste acid treatment, treated water filtration, treated water testing and discharge, and recirculation of substandard water. Waste acid treatment is completed in waste acid treatment tank 2. Stirring accelerates the reaction rate between the waste acid and the treatment agent, thereby improving the treatment efficiency. Treated water filtration is completed in filtration and separation tank 3. The liquid flows from bottom to top, and gravity improves the separation of water and solid waste. Treated water testing and discharge are completed in buffer tank 4, where the quality of the treated water is tested and appropriate treatment is carried out based on the test results. Substandard water is recirculated and undergoes secondary treatment in recirculation tank 5, while qualified water is discharged. This ensures the effective treatment of the waste acid.

[0050] The top of the waste acid treatment tank 2 is fixedly equipped with a waste acid inlet 201, a treatment agent inlet 202, a level probe 203, and two stepper motors 204. The level probe 203 is located at the center of the top of the waste acid treatment tank 2. The output shaft of each stepper motor 204 passes through the top cover plate of the waste acid treatment tank 2 and is connected to a stirring shaft 205 through a coupling. Several stirring teeth 206 are fixed on the stirring shaft 205. The lower half of the level probe 203, the stirring shaft 205, and the stirring teeth 206 are all located inside the waste acid treatment tank 2.

[0051] The waste acid in waste acid treatment tank 2 reacts with the treatment agent to form solid waste and recyclable water.

[0052] A partition wall 301 is fixedly installed in the middle of the filter separation tank 3. The partition wall 301 is vertically set and divides the filter separation tank 3 into two independent filter chambers 302. A filter screen 303 is fixedly installed in the middle of each independent filter chamber 302. A large piston plate 304 is slidably connected inside the independent filter chamber 302. The large piston plate 304 is located directly below the filter screen 303. A solid material collection pool 305 is fixedly installed directly below the filter separation tank 3. A bracket 306 is fixedly installed at the bottom of the workbench 1. The bottom end of the bracket 306 is fixed to the bottom of the outer side of the filter separation tank 3.

[0053] The filter separation tank 3 separates solid waste and water.

[0054] Example 2:

[0055] Based on the above embodiment 1, further description is provided.

[0056] See Figure 1 , Figure 2 , Figure 3 Specifically, the waste acid inlet 201 is located at the top of the waste acid treatment tank 2 near the side, and the treatment agent inlet 202 is located at the top of the waste acid treatment tank 2 near the other side.

[0057] Waste acid inlet 201 is connected to the waste acid delivery pipe via a flange, allowing waste acid to be fed into the waste acid treatment tank 2. Similarly, treatment agent inlet 202 can be used to directly feed treatment agent. The waste acid inlet 201 and treatment agent inlet 202 are far apart, so the feeding process does not interfere with each other.

[0058] Both the waste acid inlet 201 and the treatment agent inlet 202 are square inlets, and both the waste acid inlet 201 and the treatment agent inlet 202 are equipped with electrically controlled gate valves.

[0059] The square inlet makes feeding easier, the electrically controlled gate valve on the waste acid inlet 201 controls the amount of waste acid entering, and the electrically controlled gate valve on the treatment agent inlet 202 prevents waste acid from overflowing from the treatment agent inlet 202.

[0060] Specifically, a vent pipe 207 is fixedly installed at the top of the waste acid treatment tank 2. The vent pipe 207 is located close to the liquid level probe 203, and the bottom end of the vent pipe 207 passes through the top cover plate of the waste acid treatment tank 2 and is fixed to the inner top of the waste acid treatment tank 2.

[0061] When waste acid and treatment agent are injected into waste acid treatment tank 2, vent pipe 207 is needed to balance the internal and external air pressure of waste acid treatment tank 2. After the waste acid reacts with the treatment agent, gas may be generated. Vent pipe 207 can also facilitate the discharge of gas.

[0062] The vent pipe 207 has an electrically controlled gate valve structure.

[0063] During the reaction process between waste acid and treatment agent, the opening and closing of the vent pipe 207 can be controlled at any time through the electric gate valve structure. When the electric gate valve structure is closed, the inside of the waste acid treatment tank 2 can be sealed, thereby preventing the waste acid from evaporating.

[0064] Specifically, L-shaped drain pipes 208 are fixedly installed on both sides of the bottom end of the waste acid treatment tank 2, and the bottom end of the waste acid treatment tank 2 is a slope structure, with the top of the L-shaped drain pipe 208 at the lowest position of the slope.

[0065] The L-shaped drain pipe 208 is installed at the lowest position of the inclined structure, which facilitates the complete discharge of liquid in the waste acid treatment tank 2 and avoids the liquid remaining inside the waste acid treatment tank 2 after treatment.

[0066] The bottom end of the L-shaped drain pipe 208 is connected to the lower middle part of the filter separation tank 3, and there is an electrically controlled gate valve structure in the middle of the L-shaped drain pipe 208.

[0067] The L-shaped drain pipe 208 guides the treated liquid to the lower middle part of the filter separation tank 3. As the liquid increases, the liquid level will rise, and then the liquid will be filtered and separated through the filter screen 303 above. At this time, the solid residue is below the filter screen 303, and the liquid passes through the filter screen 303, completing the liquid filtration from bottom to top. This filtration method has a smaller water flow velocity and is less likely to cause the problem of reduced filtration effect due to water flow impact.

[0068] Furthermore, due to gravity, when the L-shaped drain pipe 208 is closed by the electrically controlled gate valve structure, the solids on the filter screen 303 can be discharged, preventing solid sludge from remaining on the surface of the filter screen 303.

[0069] See Figure 1 , Figure 2 , Figure 4 Specifically, two stepper motors 204 are installed at the top of the waste acid treatment tank 2 near the side edge, and the two stepper motors 204 are synchronously controlled, have the same speed, and rotate in opposite directions.

[0070] The two stepper motors 204 control the operation mode of the stirring shaft 205 and stirring teeth 206 inside the waste acid treatment tank 2, thereby rotating the waste acid. After adding the treatment agent into the waste acid, the reaction can be accelerated, while avoiding the accumulation of solids after the reaction and ensuring the smooth discharge of solids.

[0071] Example 3:

[0072] Further description is provided based on the above embodiments 1 and 2.

[0073] See Figure 1 , Figure 2 , Figure 5 , Figure 6 Specifically, two separation plates 307 are fixedly installed on the inner top of the filter separation tank 3. The two separation plates 307 are symmetrically distributed on both sides of the partition wall 301, and a drainage chamber 308 is formed between the separation plates 307 and the partition wall 301.

[0074] The drainage chamber 308 further reduces the space for water flow. When water flows through the filter screen 303, it can only be discharged through the drainage chamber 308. Furthermore, due to the smaller space of the drainage chamber 308, the internal pressure of the filter separation tank 3 caused by excessive water accumulation can be reduced.

[0075] Specifically, an L-shaped drain pipe 3081 is fixedly installed on the top side of the drainage chamber 308, and one end of the L-shaped drain pipe 3081 is fixed to the top of the buffer water tank 4.

[0076] The water inside the filter separation tank 3 is eventually discharged from the drain chamber 308 through the L-shaped drain pipe 3081. At this time, the water flow is relatively slow and can be led out to the buffer water tank 4 through the L-shaped drain pipe 3081.

[0077] The L-shaped drain pipe 3081 has an electrically controlled valve structure.

[0078] The flow and shut-off of water in the L-shaped drain pipe 3081 can be controlled by the electrically controlled valve structure.

[0079] Specifically, a hydraulic lift 3051 is fixed at the bottom of the waste acid treatment tank 2 and directly above the solid material collection tank 305. The hydraulic lift 3051 is covered with a waterproof shell, and the top of the output shaft of the hydraulic lift 3051 is fixed to the bottom of the large piston plate 304. A discharge trough 3052 is opened on the bottom side of the filter separation tank 3.

[0080] The height of the large piston plate 304 can be controlled by the hydraulic lift 3051. When the large piston plate 304 is higher than the discharge trough 3052, the liquid inside the filter separation tank 3 can only be filtered through the filter screen 303. When the filter screen 303 needs to be cleaned, no more water will enter the filter separation tank 3. At this time, the height of the large piston plate 304 is controlled to be lower than the discharge trough 3052. The solids on the filter screen 303 and the liquid remaining inside the filter separation tank 3 will be discharged from the discharge trough 3052 and collected and processed in the solid material collection pool 305.

[0081] A small piston plate 3071 is slidably connected between the separation plate 307 and the inner wall of the filter separation tank 3. Two secondary hydraulic lifts 3072 are fixedly installed at the top of the filter separation tank 3. The bottom end of the output shaft of the secondary hydraulic lift 3072 is fixed to the small piston plate 3071. A cleaning slot 3073 is opened on the top side of the filter separation tank 3.

[0082] When the inside of the filter separation tank 3 needs to be cleaned, the height of the small piston plate 3071 is controlled by the second hydraulic lift 3072 to be higher than the cleaning slot 3073, so that cleaning water can be injected through the cleaning slot 3073 to achieve rinsing and cleaning of the inside of the filter separation tank 3.

[0083] See Figure 1 , Figure 2 , Figure 7 Specifically, a pH detection probe 401 is fixedly installed on the top of the buffer tank 4, and several discharge pipes 402 with valves are fixedly installed on the side of the buffer tank 4.

[0084] The pH detection probe 401 can determine whether the acidity or alkalinity of the water inside the buffer tank 4 is up to standard. If the acidity or alkalinity is not up to standard, the water will be returned and re-treated. If the acidity or alkalinity is up to standard, the valve of the discharge pipe 402 with valve can be opened and the water will be discharged.

[0085] Specifically, a reflux pump 501 is installed at the top of the reflux tank 5. A reflux pipe 502 is fixedly installed between the inlet of the reflux pump 501 and the top of the buffer tank 4. The outlet of the reflux pump 501 is connected to the inside of the reflux tank 5. An L-shaped return pipe 503 is fixedly installed between the side of the reflux tank 5 and the top of the waste acid treatment tank 2.

[0086] When the tested water quality pH level is unqualified, the water in the buffer tank 4 can be returned to the return tank 5 through the return pump 501 and return pipe 502, and then returned to the waste acid treatment tank 2 through the L-shaped return pipe 503, waiting for reprocessing.

[0087] Working principle:

[0088] The waste acid recycling process consists of four parts: waste acid treatment, treated water filtration, treated water testing and discharge, and return of substandard water.

[0089] Waste acid treatment is completed in waste acid treatment tank 2. Specifically, waste acid enters waste acid treatment tank 2 through waste acid inlet 201. At the same time, the treatment agent is added through treatment agent inlet 202. At this time, stepper motor 204 is started, controlling the stirring shaft 205 and stirring teeth 206 to rotate synchronously. Waste acid and treatment agent react in waste acid treatment tank 2 and form solid reactants. During this process, the liquid level in waste acid treatment tank 2 is monitored by liquid level probe 203, and the gas pressure balance inside waste acid treatment tank 2 is ensured by vent pipe 207. After the waste acid and treatment agent have reacted, the mixed liquid is discharged from L-shaped drain pipe 208.

[0090] The water filtration process is completed in the filter separation tank 3. Specifically, the mixed liquid in the L-shaped drain pipe 208 is discharged into the bottom of the independent filter chamber 302 of the filter separation tank 3. As the mixed liquid is continuously discharged, the liquid passes through the filter screen 303, while the solids are intercepted by the filter screen 303. The liquid that passes through the filter screen 303 passes through the drain chamber 308 and is finally discharged through the L-shaped drain pipe 3081. After the filter separation tank 3 has been used for a certain period of time, it needs to be cleaned. During the cleaning process, no water enters the filter separation tank 3. The large piston plate 304 is controlled to be lower than the height of the discharge trough 3052 by the first hydraulic lift 3051. At the same time, the small piston plate 3071 is controlled to be higher than the height of the cleaning trough 3073 by the second hydraulic lift 3072. Cleaning water can then be injected through the cleaning trough 3073 to rinse and clean the inside of the filter separation tank 3. The cleaned solids and the liquid remaining in the filter separation tank 3 will be discharged from the discharge trough 3052 and collected and treated in the solids collection pool 305.

[0091] The treatment water testing and discharge are completed in the buffer water tank 4. Specifically, the liquid discharged from the L-shaped drain pipe 3081 flows into the buffer water tank 4. At this time, the pH detection probe 401 can determine whether the acidity or alkalinity of the water inside the buffer water tank 4 is up to standard. If the acidity or alkalinity of the water is not up to standard, it will be returned and re-treated. If the acidity or alkalinity of the water is up to standard, the valve of the drain pipe 402 with valve can be opened and the water will be discharged.

[0092] The return of substandard water is completed in the return tank 5. Specifically, when the pH of the tested water is substandard, the water in the buffer tank 4 can be returned to the return tank 5 through the return pump 501 and the return pipe 502, and then returned to the waste acid treatment tank 2 through the L-shaped return pipe 503, waiting to be reprocessed.

[0093] This allows the entire device to be used.

[0094] The above description is merely a preferred embodiment of the present invention; however, 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 its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A waste acid recovery and treatment device, comprising a workbench (1), wherein the workbench (1) has a three-layer structure from top to bottom, characterized in that: Waste acid treatment tank (2) is fixedly installed on the middle layer of the workbench (1). Filter separation tank (3) and buffer water tank (4) are fixedly installed at both ends of the lower layer of the workbench (1). Return tank (5) is fixedly installed on the top layer of the workbench (1). The waste acid treatment tank (2), filter separation tank (3), buffer water tank (4) and return tank (5) are all connected by corresponding pipelines. The top of the waste acid treatment tank (2) is fixedly equipped with a waste acid inlet (201), a treatment agent inlet (202), a level probe (203), and two stepper motors (204). The level probe (203) is located at the center of the top of the waste acid treatment tank (2). The output shaft of each stepper motor (204) passes through the top cover plate of the waste acid treatment tank (2) and is connected to a stirring shaft (205) via a coupling. Several stirring teeth (206) are fixed on the stirring shaft (205). The lower half of the level probe (203), the stirring shaft (205), and the stirring teeth (206) are all located inside the waste acid treatment tank (2). A partition wall (301) is fixedly installed in the middle of the filter separation tank (3). The partition wall (301) is vertically set and divides the filter separation tank (3) into two independent filter chambers (302). A filter screen (303) is fixedly installed in the middle of each independent filter chamber (302). A large piston plate (304) is slidably connected inside the independent filter chamber (302). The large piston plate (304) is located directly below the filter screen (303). A solid material collection pool (305) is fixedly set directly below the filter separation tank (3). A bracket (306) is fixedly installed at the bottom of the workbench (1). The bottom end of the bracket (306) is fixed to the bottom of the outer side of the filter separation tank (3). The waste acid treatment tank (2) is fixedly provided with L-shaped drain pipes (208) on both sides of the bottom end. The bottom end of the L-shaped drain pipes (208) is connected to the middle and lower part of the filter separation tank (3). The filter separation tank (3) is fixedly provided with two separation plates (307) on the inner top. The two separation plates (307) are symmetrically distributed on both sides of the partition wall (301), and a drainage chamber (308) is formed between the separation plates (307) and the partition wall (301). A hydraulic lift (3051) is fixed at the bottom of the waste acid treatment tank (2) and directly above the solid material collection tank (305). The hydraulic lift (3051) is covered with a waterproof shell, and the top of the output shaft of the hydraulic lift (3051) is fixed to the bottom of the large piston plate (304). A discharge trough (3052) is opened on the bottom side of the filter separation tank (3). A small piston plate (3071) is slidably connected between the separation plate (307) and the inner wall of the filter separation tank (3). Two No. 2 hydraulic lifts (3072) are fixedly installed at the top of the filter separation tank (3). The bottom end of the output shaft of the No. 2 hydraulic lift (3072) is fixed to the small piston plate (3071). A cleaning slot (3073) is opened on the top side of the filter separation tank (3).

2. The waste acid recovery and treatment device according to claim 1, characterized in that: The waste acid inlet (201) is located at the top of the waste acid treatment tank (2) near the side, and the treatment agent inlet (202) is located at the top of the waste acid treatment tank (2) near the other side. The waste acid inlet (201) and the treatment agent inlet (202) are both square inlets, and both the waste acid inlet (201) and the treatment agent inlet (202) are equipped with electrically controlled gate valves.

3. The waste acid recovery and treatment device according to claim 1, characterized in that: A vent pipe (207) is fixedly installed at the top of the waste acid treatment tank (2). The vent pipe (207) is located close to the liquid level probe (203), and the bottom end of the vent pipe (207) passes through the top cover plate of the waste acid treatment tank (2) and is fixed to the inner top of the waste acid treatment tank (2). The vent pipe (207) has an electrically controlled gate valve structure.

4. The waste acid recovery and treatment device according to claim 1, characterized in that: The bottom of the waste acid treatment tank (2) is a sloping structure, the top of the L-shaped drain pipe (208) is at the lowest position of the sloping surface, and there is an electrically controlled gate valve structure in the middle of the L-shaped drain pipe (208).

5. The waste acid recovery and treatment device according to claim 1, characterized in that: The two stepper motors (204) are respectively installed at the top of the waste acid treatment tank (2) near the side edge, and the two stepper motors (204) are synchronously controlled, have the same speed, and rotate in opposite directions.

6. The waste acid recovery and treatment device according to claim 1, characterized in that: An L-shaped drain pipe (3081) is fixedly installed on the top side of the drainage chamber (308), and one end of the L-shaped drain pipe (3081) is fixed to the top of the buffer water tank (4). The L-shaped drain pipe (3081) has an electrically controlled valve structure.

7. The waste acid recovery and treatment device according to claim 1, characterized in that: A pH detection probe (401) is fixedly installed on the top of the buffer tank (4), and several discharge pipes (402) with valves are fixedly installed on the side of the buffer tank (4).

8. The waste acid recovery and treatment device according to claim 1, characterized in that: A reflux pump (501) is installed at the top of the reflux tank (5). A reflux pipe (502) is fixedly installed between the inlet of the reflux pump (501) and the top of the buffer tank (4). The outlet of the reflux pump (501) is connected to the inside of the reflux tank (5). An L-shaped return pipe (503) is fixedly installed between the side of the reflux tank (5) and the top of the waste acid treatment tank (2).

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