Continuous wastewater multistage treatment device

Abstract

The invention discloses a continuous wastewater multi-stage treatment device, and belongs to the field of wastewater treatment.The continuous wastewater multi-stage treatment device comprises a supporting frame, a multi-stage treatment mechanism is installed on the surface of the supporting frame, and the multi-stage treatment mechanism comprises a water-oil separation unit, a chemical treatment unit, a biological treatment unit and a decoloration treatment unit; the water-oil separation unit comprises a separation tank fixedly connected to one side of the upper surface of the supporting frame; through cooperative use of the devices, other polypropylene fiber assemblies are pushed to move and sleeve the surface of a threaded rod through arrangement of an electric push rod, so that the threaded rod drives other polypropylene fibers to move to the middle of a separation tank; the used polypropylene fiber assembly moves to the position above the sealing box and is not in threaded connection with the threaded rod any more, oil attached to the surface of the used polypropylene fiber assembly is dissolved on the basis of spraying of supercritical carbon dioxide, and the influence of the oil attached to the polypropylene fiber assembly on reuse of polypropylene fibers is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, in particular to a multi-stage wastewater treatment device for continuous treatment. Background Art

[0002] Wastewater refers to the collective term for water discharged during residential activities and runoff rainwater. It includes domestic sewage, industrial wastewater, and other unused water such as primary rainwater runoff flowing into drainage channels. It generally refers to water that cannot be recycled after undergoing certain technical treatment or that is difficult to purify after primary pollution and cannot meet certain standards. Industrial wastewater directly flows into channels, rivers, and lakes, polluting surface water. If it is highly toxic, it can cause the death or even extinction of aquatic plants and animals. Industrial wastewater can also seep into and contaminate groundwater. If surrounding residents use contaminated surface water or groundwater for domestic use, it will endanger their health and in severe cases, cause death.

[0003] Upon investigation, a Chinese invention patent discloses a multi-stage wastewater treatment device for continuous treatment (publication number: CN117049752B), which includes a fixing frame, a cylinder, a guide cover and a drain pipe, etc.; the present invention has the advantages of allowing the precipitate in the wastewater to remain on the filter cloth of the filter frame, and the wastewater after removing the precipitate is located between the filter frame and the partition, and the wastewater after removing the precipitate is discharged through the drain pipe for collection and unified treatment, and the precipitate on the filter cloth of the filter frame is removed and collected by an external cleaning device, and then the drive motor is turned on to continuously treat the wastewater in a cycle, thereby improving the wastewater treatment efficiency, and solving the problem that when reacting through the wastewater pool, it is necessary to wait for the reaction to be completed before continuing the subsequent treatment, and when turning over the wastewater pool to pour out the precipitate, the wastewater treatment needs to be suspended, resulting in low wastewater treatment efficiency.

[0004] Although the above patent uses the setting of structures such as a filter frame and a drive motor to continuously and cyclically treat wastewater, thereby improving the wastewater treatment efficiency, and scrapes off the residual sediment on the inner wall of the cylinder through the filter frame to prevent the sediment from remaining on the inner wall of the cylinder, during the wastewater treatment process, due to the presence of oil in the wastewater, the above wastewater treatment cannot treat the oil contained in the water, resulting in incomplete final wastewater treatment.

[0005] Most existing wastewater treatment devices generally pass wastewater through polypropylene fibers, causing the oil to be absorbed by the fibers. The water then passes through the fibers to proceed to the next treatment process to separate the water and oil in the wastewater. However, after long-term use of polypropylene fibers, a large amount of oil is adsorbed on the fiber surface, causing blockage in the gaps between the fibers, reducing the speed at which water passes through the polypropylene fibers, thereby affecting the efficiency of polypropylene fibers in water-oil separation, and ultimately affecting the wastewater treatment rate of the multi-stage wastewater treatment device.

[0006] Therefore, the present invention provides a multi-stage wastewater treatment device for continuous treatment to solve the above problems. Summary of the Invention

[0007] (1) Technical problems solved The present invention provides a multi-stage wastewater treatment device for continuous treatment, aiming to solve the problems raised in the background technology.

[0008] (2) Technical solution To achieve the above-mentioned object, the present invention provides the following technical solution: a multi-stage wastewater treatment device for continuous treatment, comprising a support frame, a multi-stage treatment mechanism mounted on the surface of the support frame, the multi-stage treatment mechanism comprising a water-oil separation unit, a chemical treatment unit, a biological treatment unit, and a decolorization treatment unit; The water-oil separation unit includes a separation tank fixedly connected to one side of the upper surface of the support frame, a sealing box is slidably connected to both sides of the surface of the separation tank, a sealing plate is slidably connected to the interior of the sealing box, and both edges of one side of the sealing plate are fixedly connected to a return spring fixedly connected to the sealing box, and a pressing plate is fixedly connected to the lower surface of the sealing plate; The surface of the separation tank is fixedly connected to a collection box corresponding to the sealing box, and both sides of the inside of the collection box are fixedly connected to push plates corresponding one to one to the clamping plates. The upper surface of the separation tank is fixedly connected to an existing spray system, and the liquid sprayed by the spray system is supercritical carbon dioxide.

[0009] As a preferred technical solution of the present application, the water-oil separation unit also includes several polypropylene fiber components slidably connected to the inside of the separation tank, wherein the surface of one of the polypropylene fiber components is threadedly connected to a threaded rod rotatably connected to the inside of the separation tank, and one end of the threaded rod is fixedly connected to a drive motor fixedly connected to the separation tank.

[0010] As a preferred technical solution of the present application, the water-oil separation unit also includes a servo motor fixedly connected to the inside of the separation tank, the output end of the servo motor is fixedly connected to a bidirectional threaded rod threadedly connected to two sealing boxes, the opposite sides of the two sealing boxes are slidably connected to a guide rod fixedly connected to the separation tank, and both sides of the inner bottom wall of the separation tank are fixedly connected to electric push rods that fit the corresponding polypropylene fiber components.

[0011] As a preferred technical solution of the present application, the water-oil separation unit also includes a water inlet pipe and a drain pipe fixedly connected to one side and the lower surface of the separation tank, respectively. The water inlet pipe is connected to an external wastewater conveying equipment, and one end of the drain pipe is fixedly connected to a three-way water pipe, both ends of the three-way water pipe are fixedly connected to solenoid valves, and one end of one of the solenoid valves is fixedly connected to a delivery pipe connected to the water inlet pipe.

[0012] As a preferred technical solution of the present application, the chemical treatment unit includes a water quality tester fixedly connected to one end of another solenoid valve, one side of the water quality tester is fixedly connected to a connecting pipe, one end of the connecting pipe is fixedly connected to an isolation tank connected to the connecting pipe, a processing sub-unit is installed inside the isolation tank, and one side of the upper surface of the isolation tank is fixedly connected to a liquid inlet pipe.

[0013] As a preferred technical solution of the present application, the processing sub-unit includes a driving rod rotatably connected to the inside of the isolation tank through a bearing seat, the surface of the driving rod is fixedly connected to an isolation plate in an annular array, and the opposite sides of each two isolation plates isolate a sealed space, and the opposite sides of the two isolation plates are commonly fixedly connected to a DC motor, and the output end of the DC motor is fixedly connected to a rotating rod, and the surface of the rotating rod is fixedly connected to a stirring blade rotatably connected to the inside of the sealed space in an annular array.

[0014] As a preferred technical solution of the present application, the chemical treatment unit also includes a support frame fixedly connected to the upper surface of the isolation tank, the interior of the support frame is fixedly connected to a chemical raw material storage tank in a path array and is communicated with the sealed space, the interior of the chemical raw material storage tank stores chemical raw materials for treating wastewater, the lower surface of the isolation tank is provided with a discharge trough corresponding to the sealed space, and one end of the drive rod is fixedly connected to a drive motor 2 fixedly connected to the isolation tank.

[0015] As a preferred technical solution of the present application, the biological treatment unit includes an infusion tube fixedly connected to the isolation tank and connected to the corresponding sealed space, one end of the infusion tube is fixedly connected to an anaerobic box connected to the infusion tube, and an anaerobic bioreactor, microorganisms and a colorimetric sensor are provided inside the anaerobic box for biodegrading microorganisms in the wastewater entering the anaerobic box to further treat the wastewater.

[0016] As a preferred technical solution of the present application, the decolorization treatment unit includes electric valves fixedly connected to the lower surface of the anaerobic box in a path array, and one end of several of the electric valves is fixedly connected to the decolorization box. The interior of the decolorization box is provided with an existing electrochemical oxidation device for decolorizing the wastewater entering the decolorization box. The interior of the decolorization box and the surface of the anaerobic box are fixedly connected with temperature sensors.

[0017] As a preferred technical solution of the present application, one side of the anaerobic box and the decolorization box are fixedly connected to a drainage pipe, one end of the two drainage pipes are commonly fixedly connected to a storage tank, one side of the storage tank is fixedly connected to a liquid outlet pipe, and the anaerobic box, decolorization box and isolation tank are all fixedly connected to the upper surface of the support frame.

[0018] (3) Beneficial effects 1. Through the mutual cooperation of structures such as the water-oil separation unit, the chemical treatment unit and the treatment sub-unit, the wastewater is discharged into the separation tank. Based on the mutual cooperation of the drive motor and the threaded rod, the polypropylene fiber assembly is moved to the middle of the separation tank to separate the water and oil of the wastewater entering the separation tank. Through the setting of the electric push rod, the other polypropylene fiber assemblies are pushed to move and sleeved on the surface of the threaded rod, so that the threaded rod drives the other polypropylene fibers to move to the middle of the separation tank. The used polypropylene fiber assembly follows and moves to the top of the sealing box and is no longer threadedly connected to the threaded rod, so that the two sealing boxes are close to each other, and the top of the separation tank is sealed. The oil attached to the surface of the used polypropylene fiber assembly is dissolved by spraying supercritical carbon dioxide to prevent the oil attached to the polypropylene fiber assembly from affecting the reuse of the polypropylene fiber. 2. Based on the mutual cooperation of the collecting box and the pushing plate and other structures, after the sealing box seals the top of the separation tank, the solution that dissolves the oil on the polypropylene fiber assembly falls into the interior of the sealing box. After the polypropylene fiber assembly is cleaned, the servo motor is started, so that the bidirectional threaded rod drives the two sealing boxes away from each other, so that the abutting plate and the pushing plate are in contact, and the abutting plate drives the sealing plate to be inserted into the interior of the sealing box, so that the solution inside the sealing box enters the collecting box, and the solution is collected and processed and reused, thereby avoiding waste of solution; 3. Through the cooperation of the chemical treatment unit and the treatment sub-unit, the wastewater entering the connecting pipe through the separation tank is tested based on the water quality tester. Based on the test results, the raw materials in the corresponding chemical raw material storage tank are injected into the sealed space. At the same time, the wastewater enters the corresponding sealed space. The DC motor is started to drive the stirring blade to stir the chemical raw materials and wastewater, so that the wastewater is fully reacted and precipitated in the sealed space, the chemical raw materials in the wastewater are removed, and the wastewater is further treated. The second drive motor drives the driving rod and the isolation plate to rotate, so that the sediment in the corresponding sealed space is discharged through the discharge chute, which facilitates the alternating use of multiple sealed spaces. 4. Based on the mutual cooperation of the biological treatment unit and the decolorization treatment unit, the wastewater is biodegraded and decolorized, and the wastewater is further treated, making the wastewater treatment more thorough. In addition, through the setting of the electric valve, after the wastewater enters the anaerobic box, the color of the wastewater is detected based on the colorimetric sensor. When the color of the wastewater exceeds the threshold, the electric valve is activated to allow the wastewater to enter the decolorization box for decolorization. When the color of the wastewater does not exceed the threshold, the treated wastewater is discharged into the storage tank through the corresponding drain pipe for storage, thereby realizing diversion during the biodegradation and decolorization of the wastewater, reducing the operating pressure of the decolorization treatment unit; 5. Based on the wastewater flowing through the separation tank, isolation tank, anaerobic box / decolorization box and storage tank, the wastewater is continuously transported and treated, thereby realizing continuous treatment of the wastewater. Through the mutual cooperation of the water-oil separation unit, chemical treatment unit, biological treatment unit and decolorization treatment unit, the wastewater is treated step by step, realizing multi-stage treatment of the wastewater, thereby making the wastewater treatment more thorough. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a multi-stage wastewater treatment device for continuous treatment; Figure 2 A schematic structural diagram of a continuous wastewater multi-stage treatment device from a second perspective; Figure 3 A schematic structural diagram of a continuous wastewater multi-stage treatment device from a third perspective; Figure 4 This is a schematic diagram of the structure of a water-oil separation unit in a continuous wastewater multi-stage treatment device; Figure 5 This is a schematic diagram of the structure of a separation tank, a collection box, and a polypropylene fiber assembly in a continuous wastewater multi-stage treatment device; Figure 6 This is a schematic diagram of the structure of a collecting box, a sealing box and a sealing plate in a continuous wastewater multi-stage treatment device; Figure 7 It is a structural schematic diagram of a chemical treatment unit in a multi-stage wastewater treatment device for continuous treatment; Figure 8 A schematic diagram of the structure of a chemical treatment unit in a continuous multi-stage wastewater treatment device from a second perspective; Figure 9 This is a schematic diagram of the structure of the biological treatment unit and the decolorization treatment unit in a continuous wastewater multi-stage treatment device.

[0020] In the picture: 1. Support frame; 2. Water-oil separation unit; 201. Separation tank; 202. Sealing box; 203. Sealing plate; 204. Return spring; 205. Collection box; 206. Push plate; 207. Threaded rod; 208. Drive motor; 209. Servo motor; 210. Bidirectional threaded rod; 211. Electric push rod; 212. Drain pipe; 213. Clamping plate; 214. Polypropylene fiber assembly; 215. Water inlet pipe; 216. Delivery pipe; 217. Three-way water pipe; 218. Solenoid valve; 3. Chemical treatment unit Element; 301, water quality tester; 302, connecting pipe; 303, isolation tank; 304, support frame; 305, chemical raw material storage tank; 306, discharge chute; 307, drive motor 2; 4, biological treatment unit; 401, infusion tube; 402, anaerobic chamber; 5, decolorization treatment unit; 501, electric valve; 502, decolorization chamber; 503, temperature sensor; 6, treatment subunit; 601, drive rod; 602, isolation plate; 603, DC motor; 604, rotating rod; 7, discharge pipe; 8, storage tank. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] The present invention provides a multi-stage wastewater treatment device for continuous treatment, referring to Figures 1-9 , the present invention provides three embodiments: Example 1: The continuous wastewater multi-stage treatment device comprises a support frame 1, on the surface of which a multi-stage treatment mechanism is mounted, the multi-stage treatment mechanism comprising a water-oil separation unit 2, a chemical treatment unit 3, a biological treatment unit 4 and a decolorization treatment unit 5; The water-oil separation unit 2 includes a separation tank 201 fixedly connected to one side of the upper surface of the support frame 1. Both sides of the surface of the separation tank 201 are slidably connected to a sealing box 202. The interior of the sealing box 202 is slidably connected to a sealing plate 203. Both edges of one side of the sealing plate 203 are fixedly connected to a return spring 204 fixedly connected to the sealing box 202. Based on the elastic force of the return spring 204, the sealing plate 203 can automatically reset after moving, thereby facilitating the subsequent use of the sealing plate 203. The lower surface of the sealing plate 203 is fixedly connected to a tightening plate 213; The surface of the separation tank 201 is fixedly connected to a collection box 205 corresponding to the sealing box 202. Both sides of the interior of the collection box 205 are fixedly connected to push plates 206 corresponding one-to-one to the pressing plates 213. The upper surface of the separation tank 201 is fixedly connected to an existing spray system. The liquid sprayed by the spray system is supercritical carbon dioxide. The supercritical carbon dioxide is sprayed into the interior of the separation tank 201 through the spray system to dissolve the oil attached to the surface of the polypropylene fiber component 214, thereby preventing the oil from clogging the surface gaps of the polypropylene fiber component 214, so that the polypropylene fiber component 214 can continue to separate water and oil in the wastewater. The oil-water separation unit 2 also includes a plurality of polypropylene fiber assemblies 214 slidably connected to the interior of the separation tank 201, wherein the surface of one polypropylene fiber assembly 214 is threadedly connected to a threaded rod 207 rotatably connected to the interior of the separation tank 201, and one end of the threaded rod 207 is fixedly connected to a drive motor 208 fixedly connected to the separation tank 201. By starting the drive motor 208, its output end drives the threaded rod 207 to rotate inside the separation tank 201, thereby driving the polypropylene fiber assembly 214 to move in the separation tank 201, thereby realizing the alternating use of a plurality of polypropylene fiber assemblies 214, thereby not only avoiding the blockage of the polypropylene fiber assembly 214 caused by the continuous use of a single polypropylene fiber assembly 214, but also leaving time for the oil on the polypropylene fiber assembly 214 to dissolve after use, thereby making the polypropylene fiber assembly 214 more convenient to use; The water-oil separation unit 2 further includes a servo motor 209 fixedly connected to the interior of the separation tank 201. The output end of the servo motor 209 is fixedly connected to a bidirectional threaded rod 210 threadedly connected to the two sealing boxes 202. The opposite sides of the two sealing boxes 202 are slidably connected to a guide rod fixedly connected to the separation tank 201. When the polypropylene fiber assembly 214 is moved to the top of the separation tank 201, while the oil on the surface of the polypropylene fiber assembly 214 is dissolved by spraying supercritical carbon dioxide, the servo motor 209 is started, and its output end drives the bidirectional threaded rod 210 to rotate, so that the two sealing boxes 202 are close to each other, sealing the upper part of the separation tank 201, so that the sealing boxes 202 can collect the supercritical carbon dioxide solution; After the polypropylene fiber assembly 214 is cleaned, the bidirectional threaded rod 210 is rotated in the opposite direction, so that the two sealing boxes 202 move away from each other, so that the pressing plate 213 and the pushing plate 206 are in contact, so that the pressing plate 213 drives the sealing plate 203 to slide inside the sealing box 202, and the sealing box 202 is no longer sealed, so that the solution collected in the sealing box 202 is discharged into the collection box 205, completing the recovery of the solution. The solution is then processed and put into use again, thereby avoiding waste of the solution. Both sides of the inner bottom wall of the separation tank 201 are fixedly connected with electric push rods 211 that fit with the corresponding polypropylene fiber components 214. Based on the arrangement of the electric push rods 211, when the polypropylene fiber components 214 are inside the separation tank 201, they are not threadedly connected to the threaded rod 207. The electric push rods 211 push the polypropylene fiber components 214 to move, so that the polypropylene fiber components 214 are sleeved on the surface of the threaded rod 207. The threaded rod 207 drives the corresponding polypropylene fiber components 214 to move through the tightening force, so that several polypropylene fiber components 214 can be used in batches. The water-oil separation unit 2 further includes a water inlet pipe 215 and a drain pipe 212, which are respectively fixedly connected to one side and the lower surface of the separation tank 201. The water inlet pipe 215 is connected to an external wastewater conveying device. One end of the drain pipe 212 is fixedly connected to a three-way water pipe 217. Both ends of the three-way water pipe 217 are fixedly connected to a solenoid valve 218. One end of one of the solenoid valves 218 is fixedly connected to a conveying pipe 216 connected to the water inlet pipe 215. After the wastewater is separated from the oil, the treated wastewater is discharged into the three-way water pipe 217 through the drain pipe 212, and then the solenoid valve 218 is controlled to allow the wastewater to enter the water quality tester 301 or enter the separation tank 201 again. In this way, when treating wastewater with a high oil content, the wastewater is treated multiple times to make the water-oil separation more thorough.

[0023] Example 2: Based on Example 1, further, the chemical treatment unit 3 includes a water quality tester 301 fixedly connected to one end of another solenoid valve 218, one side of the water quality tester 301 is fixedly connected to a connecting pipe 302, one end of the connecting pipe 302 is fixedly connected to an isolation tank 303 connected to the connecting pipe 302, the interior of the isolation tank 303 is installed with a processing subunit 6, and one side of the upper surface of the isolation tank 303 is fixedly connected to a liquid inlet pipe. Through the provision of the liquid inlet pipe, when treating wastewater, it can be treated directly inside the isolation tank 303, thereby making the treatment of wastewater with a low oil content more convenient; Based on the setting of the water quality tester 301, the wastewater entering the connecting pipe 302 is tested, and after the chemical substances in the wastewater are identified, the wastewater is allowed to enter the isolation tank 303; The processing subunit 6 includes a drive rod 601 rotatably connected to the interior of the isolation tank 303 via a bearing seat. The surface of the drive rod 601 is fixedly connected to an isolation plate 602 in an annular array. The opposite sides of each two isolation plates 602 isolate a sealed space. The opposite sides of the two isolation plates 602 are commonly fixedly connected to a DC motor 603. The output end of the DC motor 603 is fixedly connected to a rotating rod 604. The surface of the rotating rod 604 is fixedly connected to a stirring blade rotatably connected to the interior of the sealed space in an annular array. After the wastewater is tested, it enters the corresponding sealed space, and the DC motor 603 can drive the rotating rod 604 to rotate, so that the stirring blades rotate in the sealed space to stir the wastewater inside. The chemical treatment unit 3 also includes a support frame 304 fixedly connected to the upper surface of the isolation tank 303. The support frame 304 has a chemical raw material storage tank 305 fixedly connected to the sealed space in a path array inside. The chemical raw material storage tank 305 stores chemical raw materials for treating wastewater. The lower surface of the isolation tank 303 is provided with a discharge chute 306 corresponding to the sealed space. One end of the drive rod 601 is fixedly connected to a second drive motor 307 fixedly connected to the isolation tank 303. While stirring the wastewater, the chemical raw materials in the corresponding chemical raw material storage tank 305 are transported into the wastewater according to the wastewater detection results. The stirring setting allows the wastewater to fully react with the chemical raw materials, thereby making the wastewater more thorough in the chemical treatment process. After the wastewater is treated, the wastewater is discharged into the biological treatment unit 4, and the drive motor 2 307 is started so that its output end drives the drive rod 601 to rotate, thereby causing the drive rod 601 to drive the isolation plate 602 to rotate, causing the sealed space to move accordingly, and causing the sludge precipitated after the wastewater treatment to move accordingly, so that the sludge moves to the discharge trough 306 and is discharged. The sludge is pushed by the setting of the stirring blades to further improve the efficiency of sludge discharge.

[0024] Example 3, based on Example 1 and Example 2, further, the biological treatment unit 4 includes a liquid infusion tube 401 fixedly connected to the isolation tank 303 and connected to the corresponding sealed space, one end of the liquid infusion tube 401 is fixedly connected to an anaerobic box 402 connected to the liquid infusion tube 401, and the anaerobic box 402 is provided with an anaerobic bioreactor, microorganisms and a colorimetric sensor for biodegrading microorganisms in the wastewater entering the anaerobic box 402 to further treat the wastewater; The chemically treated wastewater is discharged into the anaerobic box 402 through the infusion tube 401. Based on the cooperation between the anaerobic bioreactor and the microorganisms, the wastewater is anaerobically treated to eliminate the microorganisms in the wastewater. The treated wastewater is then tested by a colorimetric sensor. The decolorization treatment unit 5 includes electric valves 501 fixedly connected to the lower surface of the anaerobic box 402 in a path array. One end of several electric valves 501 is fixedly connected to the decolorization box 502. The interior of the decolorization box 502 is equipped with an existing electrochemical oxidation device for decolorizing the wastewater entering the decolorization box 502. The interior of the decolorization box 502 and the surface of the anaerobic box 402 are fixedly connected to temperature sensors 503. The provision of the temperature sensors 503 facilitates the staff to control the internal temperature of the anaerobic box 402 and the decolorization box 502. Based on the detection results of the colorimetric sensor, when the color of the wastewater exceeds a threshold, the electric valve 501 is activated to allow the wastewater to enter the decolorization box 502, where the wastewater is decolorized using the electrochemical oxidation device. When the color of the wastewater does not exceed the threshold, the wastewater is discharged into the storage tank 8 via the drain pipe 7, thereby completing the wastewater treatment. One side of the anaerobic box 402 and the decolorization box 502 is fixedly connected to a drainage pipe 7, one end of the two drainage pipes 7 is fixedly connected to a storage tank 8, and one side of the storage tank 8 is fixedly connected to a liquid outlet pipe. The anaerobic box 402, the decolorization box 502 and the isolation tank 303 are all fixedly connected to the upper surface of the support frame 1; Based on the wastewater flowing through the separation tank 201, the isolation tank 303, the anaerobic box 402 / decolorization box 502 and the storage tank 8, the wastewater is continuously transported and treated, thereby realizing continuous treatment of the wastewater, and through the mutual cooperation of the water-oil separation unit 2, the chemical treatment unit 3, the biological treatment unit 4 and the decolorization treatment unit 5, the wastewater is treated step by step to realize multi-stage treatment of the wastewater, thereby making the wastewater treatment more thorough.

[0025] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A multi-stage wastewater treatment device for continuous treatment, characterized in that: It comprises a support frame (1), a multi-stage treatment mechanism is installed on the surface of the support frame (1), and the multi-stage treatment mechanism comprises a water-oil separation unit (2), a chemical treatment unit (3), a biological treatment unit (4), and a decolorization treatment unit (5); The water-oil separation unit (2) comprises a separation tank (201) fixedly connected to one side of the upper surface of the support frame (1); both sides of the surface of the separation tank (201) are slidably connected to a sealing box (202); the interior of the sealing box (202) is slidably connected to a sealing plate (203); both edges of one side of the sealing plate (203) are fixedly connected to a return spring (204) fixedly connected to the sealing box (202); and a lower surface of the sealing plate (203) is fixedly connected to a pressing plate (213); The surface of the separation tank (201) is fixedly connected to a collection box (205) corresponding to the sealing box (202), and both sides of the interior of the collection box (205) are fixedly connected to push plates (206) corresponding one to one to the pressing plates (213). The upper surface of the separation tank (201) is fixedly connected to an existing spraying system, and the liquid sprayed by the spraying system is supercritical carbon dioxide.

2. The multi-stage wastewater treatment device for continuous treatment according to claim 1, characterized in that: The water-oil separation unit (2) further comprises a plurality of polypropylene fiber assemblies (214) slidably connected to the interior of the separation tank (201), wherein a surface of one of the polypropylene fiber assemblies (214) is threadedly connected to a threaded rod (207) rotatably connected to the interior of the separation tank (201), and one end of the threaded rod (207) is fixedly connected to a drive motor (208) fixedly connected to the separation tank (201).

3. The multi-stage wastewater treatment device for continuous treatment according to claim 2, characterized in that: The water-oil separation unit (2) further comprises a servo motor (209) fixedly connected to the interior of the separation tank (201); an output end of the servo motor (209) is fixedly connected to a bidirectional threaded rod (210) threadedly connected to two sealing boxes (202); opposite sides of the two sealing boxes (202) are slidably connected to a guide rod fixedly connected to the separation tank (201); and both sides of the inner bottom wall of the separation tank (201) are fixedly connected to electric push rods (211) that fit corresponding polypropylene fiber components (214).

4. The multi-stage wastewater treatment device for continuous treatment according to claim 3, characterized in that: The water-oil separation unit (2) further comprises a water inlet pipe (215) and a drain pipe (212) respectively fixedly connected to one side and the lower surface of the separation tank (201); the water inlet pipe (215) is connected to an external wastewater conveying device; one end of the drain pipe (212) is fixedly connected to a three-way water pipe (217); both ends of the three-way water pipe (217) are fixedly connected to electromagnetic valves (218); one end of one of the electromagnetic valves (218) is fixedly connected to a conveying pipe (216) connected to the water inlet pipe (215).

5. The multi-stage wastewater treatment device for continuous treatment according to claim 4, characterized in that: The chemical treatment unit (3) comprises a water quality tester (301) fixedly connected to one end of another solenoid valve (218); a connecting pipe (302) is fixedly connected to one side of the water quality tester (301); an isolation tank (303) in communication with the connecting pipe (302) is fixedly connected to one end of the connecting pipe (302); a processing subunit (6) is installed inside the isolation tank (303); and a liquid inlet pipe is fixedly connected to one side of the upper surface of the isolation tank (303).

6. The multi-stage wastewater treatment device for continuous treatment according to claim 5, characterized in that: The processing subunit (6) comprises a driving rod (601) rotatably connected to the interior of the isolation tank (303) via a bearing seat, the surface of the driving rod (601) being fixedly connected to an isolation plate (602) in an annular array, the opposite sides of each two isolation plates (602) isolating a sealed space, the opposite sides of the two isolation plates (602) being fixedly connected to a DC motor (603), the output end of the DC motor (603) being fixedly connected to a rotating rod (604), the surface of the rotating rod (604) being fixedly connected to a stirring blade rotatably connected to the interior of the sealed space in an annular array.

7. The multi-stage wastewater treatment device for continuous treatment according to claim 6, characterized in that: The chemical treatment unit (3) further comprises a support frame (304) fixedly connected to the upper surface of the isolation tank (303); a chemical raw material storage tank (305) in communication with the sealed space is fixedly connected to the interior of the support frame (304) in a path array; chemical raw materials for treating wastewater are stored in the chemical raw material storage tank (305); a discharge trough (306) corresponding to the sealed space is provided on the lower surface of the isolation tank (303); and one end of the drive rod (601) is fixedly connected to a second drive motor (307) fixedly connected to the isolation tank (303).

8. The multi-stage wastewater treatment device for continuous treatment according to claim 5, characterized in that: The biological treatment unit (4) comprises a liquid infusion tube (401) fixedly connected to the isolation tank (303) and communicating with the corresponding sealed space; one end of the liquid infusion tube (401) is fixedly connected to an anaerobic box (402) communicating with the liquid infusion tube (401); an anaerobic bioreactor, microorganisms, and a colorimetric sensor are provided inside the anaerobic box (402) for biodegrading microorganisms in wastewater entering the anaerobic box (402) to further treat the wastewater.

9. The multi-stage wastewater treatment device for continuous treatment according to claim 8, characterized in that: The decolorization treatment unit (5) includes electric valves (501) fixedly connected to the lower surface of the anaerobic box (402) in a path array, one end of a plurality of the electric valves (501) is fixedly connected to the decolorization box (502), and the interior of the decolorization box (502) is provided with an existing electrochemical oxidation device for decolorizing the wastewater entering the decolorization box (502). The interior of the decolorization box (502) and the surface of the anaerobic box (402) are both fixedly connected with a temperature sensor (503).

10. The multi-stage wastewater treatment device for continuous treatment according to claim 9, characterized in that: One side of the anaerobic box (402) and the decolorization box (502) is fixedly connected to a drainage pipe (7), one end of the two drainage pipes (7) is fixedly connected to a storage tank (8), one side of the storage tank (8) is fixedly connected to a liquid outlet pipe, and the anaerobic box (402), the decolorization box (502) and the isolation tank (303) are all fixedly connected to the upper surface of the support frame (1).

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