Low-temperature evaporation treatment zero discharge device for potassium permanganate wastewater treatment

Abstract

The utility model discloses a low-temperature evaporation treatment zero-discharge device for potassium permanganate wastewater treatment, which comprises a wastewater collecting device, a PH adjusting device is arranged on one side of the wastewater collecting device, an oxalic acid dosing device is connected onto the PH adjusting device, a diaphragm filter press is connected onto the PH adjusting device, and the diaphragm filter press is connected onto the other side of the wastewater collecting device. A squeezing water tank is arranged on one side of the diaphragm filter press, a diaphragm pump is connected to the diaphragm filter press, the diaphragm pump connected with the diaphragm filter press is connected with a PH adjusting device, a liquid filtering device is arranged on one side of the PH adjusting device, and a low-temperature evaporator is arranged on one side of the liquid filtering device. The potassium permanganate wastewater low-temperature evaporation treatment zero-discharge device has the beneficial effects that the wastewater treatment effect is effectively improved, the wastewater treatment cost is effectively reduced, and in addition, the technical scheme is short in treatment process flow, simple in operation flow, relatively high in treatment efficiency, good in purification effect, good in impurity filtration effect and good in color removal effect.

Description

Technical Field

[0001] The utility model relates to the technical field of treating wastewater containing potassium permanganate, in particular to a zero-discharge device for treating wastewater containing potassium permanganate by low-temperature evaporation. Background Art

[0002] The potassium permanganate wastewater low-temperature evaporation treatment device is a device for treating potassium permanganate wastewater. After adjusting the pH, it is squeezed through a diaphragm filter press, and the final filtrate is treated using a low-temperature evaporator, etc. It has a good effect in treating potassium permanganate wastewater and effectively reduces costs. The treatment process is short and the operation process is simple.

[0003] Existing potassium permanganate wastewater treatment devices have low efficiency, high cost, low treatment efficiency, poor purification effect, poor impurity filtration, and poor color removal effect.

[0004] Therefore, a zero-emission device for low-temperature evaporation treatment of potassium permanganate wastewater is invented to solve the above-mentioned problems of low treatment efficiency, high cost, low treatment efficiency, poor purification effect, poor impurity filtration and poor color removal effect. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems and to design a zero-discharge device for treating potassium permanganate wastewater by low-temperature evaporation.

[0006] To achieve the above-mentioned purpose, the technical solution of the utility model is a zero-emission device for treating potassium permanganate wastewater by low-temperature evaporation, comprising a wastewater collecting device, a pH regulating device is arranged on one side of the wastewater collecting device, an oxalic acid dosing device is connected to the pH regulating device, a diaphragm filter press is connected to the pH regulating device, a water pressing tank is arranged on one side of the diaphragm filter press, a diaphragm pump is connected to the diaphragm filter press, the diaphragm pump connected to the diaphragm filter press is connected to the pH regulating device, a filtrate device is arranged on one side of the pH regulating device, and a low-temperature evaporator is arranged on one side of the filtrate device.

[0007] As a further description of the technical solution, the feed end of the low-temperature evaporator is connected to a filtrate device, and the water production end of the low-temperature evaporator is connected to a drainage tank and a concentrated liquid collection tank.

[0008] As a further description of the technical solution, the wastewater collection device includes a wastewater collection tank, and a water inlet pipe is arranged on the outer surface of the wastewater collection tank, and the water inlet pipe is connected to the corresponding sewage pipe in the docking.

[0009] As a further description of the technical solution, the PH regulating device includes a PH regulating tank, in which a stirrer for stirring wastewater is provided, and the PH regulating device is connected to the wastewater collecting device via a centrifugal pump.

[0010] As a further description of the technical solution, a dosing pipe coming from an oxalic acid dosing device is provided on the outer surface of the pH regulating tank.

[0011] As a further description of the technical solution, the oxalic acid dosing device is provided with a stirrer and a diaphragm pump for dosing and stirring. The diaphragm pump in the oxalic acid dosing device pumps the agent from the oxalic acid dosing device to the pH regulating tank.

[0012] As a further description of the technical solution, the membrane filter press is externally connected to a high-pressure pump, and the high-pressure pump is connected to a squeeze water tank, and the high-pressure pump assists the membrane filter press in dehydrating and squeezing wastewater.

[0013] As a further description of the present technical solution, the filtrate device includes a filtrate tank, and a diaphragm filter press and a low-temperature evaporator are arranged on the outer surface of the filtrate device. The filtrate after the wastewater is squeezed by the diaphragm filter press flows into the filtrate tank, and then the filtrate in the filtrate tank is pumped to the low-temperature evaporator for treatment through a centrifugal pump. The core function of the filtrate tank is to store the filtrate of the diaphragm filter press and provide a place for feeding the rear-end low-temperature evaporator.

[0014] As a further description of the technical solution, the feed end of the low-temperature evaporator is connected to the filtrate tank, and a water pump is provided on the drainage pool to reuse the water in the drainage pool.

[0015] The beneficial effect lies in that the technical scheme achieves the purpose of potassium permanganate wastewater treatment through the process of wastewater collection tank, wastewater and dosing mixer, oxalic acid dosing device, pH adjustment tank, centrifugal pump, diaphragm pump, water pressing tank, diaphragm filter press, high-pressure pump, filtrate tank, low-temperature evaporation equipment, concentrate collection barrel and drainage tank, effectively improves the wastewater treatment effect, and effectively reduces the cost of wastewater treatment. In addition, the technical scheme has a short treatment process flow, a simple operation process, a high treatment efficiency, a good purification effect, a good impurity filtration effect, and a good color removal effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0017] In the figure, 1. wastewater collection tank; 2. pH adjustment tank; 3. filtrate tank; 4. low-temperature evaporator; 5. concentrate collection tank; 6. drainage tank; 7. diaphragm filter press; 8. water pressing tank; 9. oxalic acid dosing device; 10. mixer; 11. diaphragm pump; 12. centrifugal pump; 13. high-pressure pump. DETAILED DESCRIPTION

[0018] First of all, the design intention of the utility model is explained. The existing potassium permanganate wastewater treatment device has low efficiency, high cost, low treatment efficiency, poor purification effect, poor impurity filtering and poor color removal effect. Therefore, the utility model designs a zero-emission device for low-temperature evaporation treatment of potassium permanganate wastewater.

[0019] The utility model is described in detail below in conjunction with the accompanying drawings. Figure 1 As shown, a zero-emission device for treating potassium permanganate wastewater by low-temperature evaporation treatment includes a wastewater collecting device. The wastewater collecting device will be introduced in detail below. The wastewater collecting device includes a wastewater collecting tank 1. The outer surface of the wastewater collecting tank 1 is provided with a water inlet pipe, and the water inlet pipe is connected to the corresponding sewage pipe under the docking. The water inlet pipe is used to collect the corresponding potassium permanganate wastewater and collect it into the wastewater collecting tank for storage.

[0020] A PH regulating device is arranged on one side of the wastewater collecting device. The PH regulating device will be described in detail below. The PH regulating device includes a PH regulating tank 2. A stirrer 10 for stirring the wastewater is arranged in the PH regulating tank 2. The PH regulating device is connected to the wastewater collecting device through a centrifugal pump 12.

[0021] After the potassium permanganate wastewater is collected, the centrifugal pump 12 at the rear end of the wastewater collection tank 1 pumps the wastewater from the wastewater collection tank 1 to the PH adjustment tank 2 to adjust the PH of the potassium permanganate wastewater. This PH adjustment uses oxalic acid to adjust the PH to 6 or below, which effectively reduces the dosage cost. The PH adjustment tank 2 is equipped with a mixer 10, which promotes the full mixing and reaction of the acid and the wastewater. When the PH adjustment is qualified, the diaphragm pump 11 at the rear end of the PH adjustment tank 2 pumps the adjusted wastewater to the diaphragm filter press 7.

[0022] An oxalic acid dosing device 9 is connected to the pH adjusting device, which will be described in detail below. The oxalic acid dosing device 9 is provided with a stirrer 10 and a diaphragm pump 11 for dosing and stirring. The diaphragm pump 11 in the oxalic acid dosing device 9 pumps the agent from the oxalic acid dosing device 9 to the pH adjusting tank 2. The outer surface of the pH adjusting tank 2 is provided with a dosing pipe coming from the oxalic acid dosing device 9.

[0023] A diaphragm filter press 7 is connected to the pH regulating device, a squeeze water tank 8 is arranged on one side of the diaphragm filter press 7, a diaphragm pump 11 is connected to the diaphragm filter press 7, and the diaphragm pump 11 connected to the diaphragm filter press 7 is connected to the pH regulating device. The diaphragm filter press 7 squeezes the wastewater adjusted by the front-end pH regulating tank 2, and the impurities and solid particles are squeezed into mud. When it is disposed of as hazardous waste solids, the squeezed wastewater is called filtrate, and the filtrate is discharged to the filter press tank for storage.

[0024] A filtrate device is arranged on one side of the pH regulating device, which will be described in detail below. The filtrate device includes a filtrate tank 3, and a diaphragm filter press 7 and a low-temperature evaporator 4 are arranged on the outer surface of the filtrate device. The filtrate after the wastewater is squeezed by the diaphragm filter press 7 flows into the filtrate tank 3, and then the filtrate in the filtrate tank 3 is pumped to the low-temperature evaporator 4 for treatment through a centrifugal pump 12. The core function of the filtrate tank 3 is to store the filtrate of the diaphragm filter press 7 and provide a place for feeding the rear-end low-temperature evaporator 4.

[0025] The filter press of the filtrate tank 3 is also pumped to the low-temperature evaporator 4 through the centrifugal pump 12 at the rear end. The low-temperature evaporator 4 is a method and device for effectively suppressing the generation of thermal stress. When the heat exchanger that heats the low-temperature liquid is started and slowly cooled, thermal stress will be generated. In the method of slow cooling in a heat exchanger equipped with an inlet chamber, a low-temperature liquid is sent into the inlet chamber, and the low-temperature liquid is sprayed in the inlet chamber. The flow rate during the slow cooling process is lower than that during the normal operation process. The low-temperature evaporator 4 equipment is operated, and the filter press is subjected to wastewater reduction treatment. The wastewater impurities are concentrated and discharged to the concentrated liquid collection tank 5 at the rear end for storage, and the treated clean water is discharged to the drainage pool 6.

[0026] A low-temperature evaporator 4 is arranged on one side of the filtrate device, a feed end of the low-temperature evaporator 4 is connected to the filtrate device, and a water production end of the low-temperature evaporator 4 is connected to a drainage tank 6 and a concentrated liquid collection tank 5.

[0027] A high-pressure pump 13 is connected to the outside of the membrane filter press 7 , and the high-pressure pump 13 is connected to a squeeze water tank 8 . The high-pressure pump 13 dehydrates and squeezes the waste water of the auxiliary membrane filter press 7 .

[0028] The feed end of the low-temperature evaporator 4 is connected to the filtrate tank 3, and the water production end of the low-temperature evaporator 4 is connected to the drainage tank 6 and the concentrated liquid collection tank 5; the drainage tank 6 is provided with a water pump, and the water pump reuses the water in the drainage tank 6.

[0029] The above describes the specific structure of the utility model in detail. The following describes the working principle of the utility model: when using the device, wastewater is collected by the wastewater collection device, and then the collected wastewater is pumped to the pH adjustment tank 2 through the centrifugal pump 12 to adjust the pH. The diaphragm pump 11 pumps the agent from the oxalic acid dosing device 9 to the pH adjustment tank 2, and the agent is stirred and mixed in the water through the mixer 10 inside the pH adjustment tank 2. When the pH adjustment is qualified, the diaphragm pump 11 at the rear end of the pH adjustment tank 2 pumps the adjusted wastewater to the diaphragm filter press 7, and then the diaphragm filter press 7 is used. The wastewater adjusted by the front-end PH adjustment tank 2 is squeezed to squeeze the impurities and solid particles into mud. The filtrate after the wastewater is squeezed by the diaphragm filter press 7 flows into the filtrate tank 3, and then the filtrate in the filtrate tank 3 is pumped to the low-temperature evaporator 4 for treatment through the centrifugal pump 12 to reduce the amount of wastewater. The filtrate in the filtrate tank 3 is also pumped to the low-temperature evaporator 4 through the rear-end centrifugal pump 12. Finally, after the evaporator's reduction treatment, the impurities in the wastewater are concentrated and discharged to the rear-end concentrated liquid collection tank 5 for storage, and the treated clean water is discharged to the drainage pool 6.

[0030] The technical scheme achieves the purpose of potassium permanganate wastewater treatment through the process of wastewater collection tank 1, wastewater and dosing mixer 10, oxalic acid dosing device 9, PH adjustment tank 2, centrifugal pump 12, diaphragm pump 11, water pressing tank 8, diaphragm filter press 7, high-pressure pump 13, filtrate tank 3, low-temperature evaporation equipment, concentrate collection barrel, and drainage tank 6, effectively improves the wastewater treatment effect, and effectively reduces the cost of wastewater treatment. In addition, the technical scheme has a short treatment process flow, a simple operation process, a high treatment efficiency, a good purification effect, a good impurity filtration effect, and a good color removal effect.

[0031] The above technical solutions only reflect the preferred technical solutions of the technical solutions of the utility model. Some changes that may be made to certain parts thereof by technicians in this technical field all reflect the principles of the utility model and fall within the protection scope of the utility model.

Claims

1. A zero-emission device for low-temperature evaporation of potassium permanganate wastewater, characterized in that: The invention comprises a wastewater collecting device, a pH regulating device is arranged on one side of the wastewater collecting device, an oxalic acid dosing device (9) is connected to the pH regulating device, a diaphragm filter press (7) is connected to the pH regulating device, a water pressing tank (8) is arranged on one side of the diaphragm filter press (7), a diaphragm pump (11) is connected to the diaphragm filter press (7), the diaphragm pump (11) connected to the diaphragm filter press (7) is connected to the pH regulating device, a filtrate device is arranged on one side of the pH regulating device, and a low-temperature evaporator (4) is arranged on one side of the filtrate device.

2. A zero-discharge device for low-temperature evaporation treatment of potassium permanganate wastewater according to claim 1, characterized in that: The feed end of the low-temperature evaporator (4) is connected to a filtrate device, and the water production end of the low-temperature evaporator (4) is connected to a drainage tank (6) and a concentrated liquid collection tank (5).

3. A zero-discharge device for low-temperature evaporation treatment of potassium permanganate wastewater according to claim 1, characterized in that: The wastewater collection device comprises a wastewater collection tank (1), the outer surface of which is provided with a water inlet pipe, the water inlet pipe being connected to a corresponding sewage pipe in the docking station.

4. A zero-discharge device for low-temperature evaporation treatment of potassium permanganate wastewater according to claim 1, characterized in that: The pH regulating device comprises a pH regulating tank (2), in which a stirrer (10) for stirring wastewater is arranged, and the pH regulating device is connected to a wastewater collecting device via a centrifugal pump (12).

5. A zero-discharge device for low-temperature evaporation treatment of potassium permanganate wastewater according to claim 4, characterized in that: The outer surface of the pH regulating tank (2) is provided with a dosing pipe coming from the oxalic acid dosing device (9).

6. A zero-discharge device for low-temperature evaporation treatment of potassium permanganate wastewater according to claim 1, characterized in that: The oxalic acid dosing device (9) is provided with a stirrer (10) and a diaphragm pump (11) for dosing and stirring. The diaphragm pump (11) in the oxalic acid dosing device (9) pumps the agent from the oxalic acid dosing device (9) to the pH regulating tank (2).

7. A zero-discharge device for low-temperature evaporation treatment of potassium permanganate wastewater according to claim 1, characterized in that: The membrane filter press (7) is externally connected to a high-pressure pump (13), and the high-pressure pump (13) is connected to a squeeze water tank (8). The high-pressure pump (13) dehydrates and squeezes the waste water of the auxiliary membrane filter press (7).

8. A zero-discharge device for low-temperature evaporation treatment of potassium permanganate wastewater according to claim 1, characterized in that: The filtrate device comprises a filtrate tank (3), and a membrane filter press (7) and a low-temperature evaporator (4) are arranged on the outer surface of the filtrate device. The filtrate after the wastewater is squeezed by the membrane filter press (7) flows into the filtrate tank (3), and then the filtrate in the filtrate tank (3) is pumped to the low-temperature evaporator (4) for treatment through a centrifugal pump (12). The core function of the filtrate tank (3) is to store the filtrate of the membrane filter press (7) and provide a place for feeding the rear low-temperature evaporator (4).

9. A zero-discharge device for low-temperature evaporation treatment of potassium permanganate wastewater according to claim 2, characterized in that: The feed end of the low-temperature evaporator (4) is connected to the filtrate tank (3), and a water pump is provided on the drainage pool (6), and the water pump reuses the water in the drainage pool (6).

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