Treatment method and treatment equipment for pickled vegetable pickling wastewater

Abstract

The invention provides a treatment method and treatment equipment for pickled vegetable pickling wastewater, and relates to the technical field of wastewater treatment.The treatment equipment comprises a treatment box, four partition plates are symmetrically fixed to the circle center in the treatment box, a filter plate is fixed between every two adjacent partition plates and is in an arc shape, and a water inlet is formed in the position, corresponding to the position between every two partition plates, of the upper end of the treatment box; a crystallization box is arranged at the tail end of the treatment box, four electrodialysis chambers are symmetrically arranged in the center of a circle in the crystallization box, compared with the prior art, the interior of the treatment box and the interior of the crystallization box are each divided into four chambers, wastewater is filtered one by one through the four chambers, and blockage caused by long-time use of one filter plate is avoided; by means of butt joint of the delivery pipe and the receiving pipe, when wastewater enters the electrodialysis chamber and rotates to the top, the wastewater is in rapid contact with salt crystals in a heating evaporation mode, the use time of other chambers is not occupied in the process, the wastewater treatment efficiency is improved, and all the chambers can be recycled.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, and particularly to a treatment method and treatment equipment for pickled vegetable wastewater. Background Technique

[0002] Pickled vegetable wastewater mainly comes from the following links: cleaning link: during the pickled vegetable processing, vegetables need to be cleaned to remove surface soil and impurities. A large amount of washing wastewater will be generated during this process; soaking link: in order to make the pickled vegetables more crispy and tender, vegetables need to be soaked during the processing. A large amount of soaking wastewater will be generated during this process; boiling link: in order to make the pickled vegetables fully cooked and increase their taste and flavor, vegetables need to be boiled during the processing. A large amount of boiling wastewater will be generated during this process; filtering link: in order to make the pickled vegetables more pure, the pickled vegetables after boiling need to be filtered during the processing. A large amount of filtering wastewater will be generated during this process.

[0003] Pickled vegetable wastewater belongs to high-salinity wastewater. In order to avoid waste of salt, the salt in the wastewater can be separated by electrodialysis. During the wastewater treatment process, it is first necessary to filter it to remove large impurities, and then send it into the electrodialysis treatment system to precipitate salt crystals. The efficiency is low and it is necessary to wait for the dialysis process. At the same time, the filtration stage of the previous pretreatment is also prone to blockage, which affects the overall treatment efficiency. Summary of the Invention

[0004] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a treatment method and treatment equipment for pickled vegetable wastewater to solve the problems proposed in the above background technology. The structure of the present invention is novel. Both the treatment tank and the crystallization tank are divided into four chambers, and the wastewater is filtered one by one through the four chambers to avoid blockage caused by long-term use of a single filter plate. Through the docking of the delivery pipe and the receiving pipe, the wastewater enters the electrodialysis chamber, and when it rotates to the top, it quickly contacts the salt crystals by heating and evaporation. This process does not occupy the use time of other chambers, improves the wastewater treatment efficiency, and each chamber can be recycled.

[0005] To achieve the above object, the present invention is realized through the following technical solutions: A treatment device for pickled vegetable wastewater includes a treatment tank. Four partition plates are symmetrically fixed at the center of the interior of the treatment tank. A filter plate is fixed between adjacent partition plates, and the filter plate is arc-shaped. An inlet is provided at the upper end of the treatment tank corresponding to the space between two partition plates. A crystallization tank is arranged at the tail end of the treatment tank. Four electrodialysis chambers are symmetrically arranged at the center of the interior of the crystallization tank, and crystallization plates are slidably inserted into the electrodialysis chambers. Three exhaust pipes are provided at the top of the crystallization tank, and a condenser is fixedly installed at the outer end of the exhaust pipes. A connecting pipe is fixed on one side of the condenser, and the other end of the connecting pipe is fixedly connected to a biological treatment tank. A cleaning component is arranged outside the treatment tank. The cleaning component includes a scraper. A scraper is arranged between two partition plates at the bottom of the treatment tank, and the scraper slides along the inner wall of the bottom of the treatment tank and the filter plate. The scraper is embedded in the front end of the treatment tank, and a notch is provided at the corresponding position of the rear end of the treatment tank for the scraper. Four delivery pipes are arranged at the positions corresponding to the bottoms of the four filter plates at the tail end of the treatment tank, and the delivery pipes are rotatably installed at the tail end of the treatment tank through bearings. Four receiving pipes are arranged at the front end of the crystallization tank, and the receiving pipes alternately correspond to the delivery pipes.

[0006] Further, a motor is fixed at the center of the front end of the treatment tank, and the output end of the motor is fixedly connected to the central axis of the partition plate. A shaft rod is rotatably installed at the center of the crystallization tank, and the shaft rod passes through the front end of the crystallization tank. The central axis of the partition plate passes through the treatment tank and is fixedly connected to the shaft rod.

[0007] Further, a connecting frame is fixed at the front end of the shaft rod corresponding to the positions of the four electrodialysis chambers, and the connecting frame is fixedly connected to the shaft rod and the electrodialysis chambers.

[0008] Further, a heater is fixed on the inner wall at the tail end of the crystallization tank, and an elastic extrusion layer is arranged at the top of the heater. The elastic extrusion layer of the heater contacts the bottom of the crystallization plate at the uppermost end of the crystallization tank.

[0009] Further, the cleaning component further includes an electric push rod. The electric push rod is fixed on the outer wall of the treatment tank, and a connecting plate is fixed at the extending end of the electric push rod. A first connecting rod is fixed at one end of the connecting plate corresponding to the position of the scraper, and the first connecting rod penetrates into the treatment tank and is fixedly connected to the scraper.

[0010] Further, a delivery outlet is provided at the position of one crystallization plate at the tail end of the crystallization tank. A second connecting rod is fixed at the other end of the connecting plate, and the other end of the second connecting rod penetrates into the crystallization tank and is in extrusion contact with the front end of the crystallization plate.

[0011] Further, a turntable is rotatably installed on the front surface of the crystallization tank, and the electrodialysis chambers are fixedly connected to the turntable. A connecting layer is fixed at the center of the turntable, and the four receiving pipes are in sliding contact with the outer end of the connecting layer.

[0012] Further, a central column is fixed at the center of the connection layer. An upper through hole is provided at the upper end of the central column, and vertical grooves are provided on both sides of the upper through hole.

[0013] Further, the bottom of the vertical groove penetrates into the connection layer, and a lower through hole corresponding to the receiving pipe is provided at the bottom of the connection layer. The lower through hole communicates with the vertical groove.

[0014] A method for treating pickled vegetable wastewater, the treatment method comprising the following steps:

[0015] (1) The pickled vegetable wastewater is intermittently fed from the water inlet, and the wastewater is filtered alternately by four groups of filter plates and partition plates inside the treatment tank, and impurities are isolated by the filter plates;

[0016] (2) Through the four groups of delivery pipes and receiving pipes, they are alternately docked on the connection layer, and the wastewater is fed into the crystallization tank. Four electrodialysis chambers inside the crystallization tank alternately receive the wastewater and perform electrodialysis and evaporation crystallization;

[0017] (3) The evaporated gas is sent into the biological treatment tank through the exhaust pipe and the condenser, and the metabolic action of microorganisms is carried out by using the activated sludge method in the biological treatment tank to convert the organic matter in the wastewater into simple inorganic substances and carbon dioxide and other substances;

[0018] (4) The salt crystals can be manually collected after being extracted from the crystallization plate by the cleaning component, and are separately treated, and the impurities accumulated on the filter plate are cleaned by the scraper.

[0019] Advantages of the present invention:

[0020] 1. Since the shaft rod is fixedly connected to the central axis of the partition plate in the present invention, the receiving pipe will also rotate synchronously. On the connection layer and the central column, only the upper end of the central column is provided with an upper through hole communicating with the delivery pipe, and the connection layer is only provided with a lower through hole communicating with the receiving pipe in the lower layer, and the upper through hole and the lower through hole are connected by the vertical grooves on both sides, which can avoid the interference of the lower delivery pipe on the conveyance of the wastewater. The upper delivery pipe sends the wastewater into the receiving pipe through the upper through hole, the vertical groove and the lower through hole. The receiving pipe is slidably inserted into the crystallization plate, and the wastewater enters the electrodialysis chamber for dialysis work. The four delivery pipes and the connection pipes can alternately send and receive the wastewater one by one, avoiding the overlong use time of a group.

[0021] 2. The present invention drives the connecting plate to move through the electric push rod. The first connecting rod and the second connecting rod move together with the connecting plate. The first connecting rod drives the scraper to move along the two partition plates at the bottom of the treatment tank and the surface of the filter plate, and sends the accumulated impurities out from the outlet end at the tail end of the treatment tank. The second connecting rod penetrates into the crystallization tank to extrude the crystallization plate, and pushes the crystallization plate out from the delivery outlet at the tail end of the crystallization tank, facilitating the manual removal of the salt crystals on the crystallization plate.

[0022] 3. The present invention drives the partition plate and the filter plate to rotate through the motor, so that the four groups of filter plates can cycle to correspond to the position of the water inlet, avoiding blockage caused by long-term use of the filter plate. At the same time, as the partition plate rotates, the shaft rod drives the electrodialysis chamber to rotate through the connecting frame, and positions the electrodialysis chamber and the crystallization plate at the positions for receiving wastewater, the electrodialysis stage, and the evaporation stage respectively. When at the top, the wastewater on the crystallization plate is evaporated by the heater, and the generated gas is sent into the biological treatment tank through the exhaust pipe and the condenser for subsequent wastewater treatment.

[0023] 4. Compared with the prior art, the present invention divides the interiors of both the treatment tank and the crystallization tank into four chambers, and filters the wastewater through the four chambers one by one, avoiding blockage caused by long-term use of a single filter plate. Through the docking of the delivery pipe and the receiving pipe, the wastewater enters the interior of the electrodialysis chamber, and when it rotates to the top, it quickly contacts the salt crystals through the method of heating and evaporation. During this process, it does not occupy the usage time of other chambers, improving the wastewater treatment efficiency, and each chamber can be recycled. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic flow chart of a method for treating pickled vegetable wastewater according to the present invention;

[0025] Figure 2 It is a schematic overall structure diagram of a device for treating pickled vegetable wastewater according to the present invention;

[0026] Figure 3 It is a schematic structure diagram of the cleaning component of a device for treating pickled vegetable wastewater according to the present invention;

[0027] Figure 4 It is a schematic diagram of the installation position of the scraper of a device for treating pickled vegetable wastewater according to the present invention;

[0028] Figure 5 It is a schematic diagram of the internal structure of the treatment tank of a device for treating pickled vegetable wastewater according to the present invention;

[0029] Figure 6 It is a schematic diagram of the tail end of the crystallization tank of a device for treating pickled vegetable wastewater according to the present invention;

[0030] Figure 7 It is a schematic diagram of the internal structure of the crystallization tank of a device for treating pickled vegetable wastewater according to the present invention;

[0031] Figure 8 Front schematic diagram of the crystallization tank of a pickled vegetable pickling wastewater treatment device of the present invention;

[0032] Figure 9 Corresponding schematic diagram of the delivery pipe and the receiving pipe of a pickled vegetable pickling wastewater treatment device of the present invention.

[0033] In the figure: 1. treatment tank; 11. water inlet; 12. partition board; 13. filter plate; 14. delivery pipe; 2. crystallization tank; 21. exhaust pipe; 22. condenser; 23. receiving pipe; 24. turntable; 25. connection layer; 26. shaft rod; 27. heater; 28. delivery outlet; 29. connection frame; 210. electrodialysis chamber; 211. crystallization plate; 212. vertical groove; 213. lower end through hole; 214. central column; 215. upper end through hole; 3. biological treatment tank; 31. connecting pipe; 4. cleaning component; 41. electric push rod; 42. first connecting rod; 43. second connecting rod; 44. connecting plate; 45. scraper; 5. motor. Detailed implementation manners

[0034] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0035] Please refer to Figures 1 to 9 , the present invention provides a technical solution:

[0036] A method for treating pickled vegetable pickling wastewater, the treatment method comprising the following steps:

[0037] (1) The pickled vegetable pickling wastewater is intermittently fed from the water inlet, and the wastewater is filtered alternately by four groups of filter plates and partition boards inside the treatment tank, and the impurities are isolated by the filter plates;

[0038] (2) Through the four groups of delivery pipes and receiving pipes, they are alternately butted on the connection layer, and the wastewater is fed into the crystallization tank. The four electrodialysis chambers inside the crystallization tank alternately receive the wastewater and perform electrodialysis and evaporation crystallization;

[0039] (3) The evaporated gas is sent into the biological treatment tank through the exhaust pipe and the condenser, and the active sludge method in the biological treatment tank is used for the metabolism of microorganisms to convert the organic matter in the wastewater into simple inorganic substances and carbon dioxide and other substances;

[0040] (4) The salt crystals can be manually collected after being extracted from the crystallization plate by the cleaning component, and are separately treated, and the impurities accumulated on the filter plate are cleaned by the scraper.

[0041] A treatment device for pickled vegetable pickling wastewater, comprising a treatment tank 1. Four partitions 12 are symmetrically fixed at the center of the interior of the treatment tank 1. A filter plate 13 is fixed between adjacent partitions 12, and the filter plate 13 is arc-shaped. A water inlet 11 is provided at the upper end of the treatment tank 1 corresponding to the space between two partitions 12. A crystallization tank 2 is arranged at the tail end of the treatment tank 1. Four electrodialysis chambers 210 are symmetrically arranged at the center of the interior of the crystallization tank 2, and a crystallization plate 211 is slidably inserted into the interior of the electrodialysis chamber 210. Three exhaust pipes 21 are provided at the top of the crystallization tank 2, and a condenser 22 is fixedly installed at the outer end of the exhaust pipe 21. A connecting pipe 31 is fixed to one side of the condenser 22, and the other end of the connecting pipe 31 is fixedly connected to a biological treatment tank 31. A cleaning assembly 4 is arranged outside the treatment tank 1. The cleaning assembly 4 includes a scraping plate 45. The scraping plate 45 is arranged between two partitions 12 at the bottom of the treatment tank 1, and the scraping plate 45 slides along the inner wall of the bottom of the treatment tank 1 and the filter plate 13. The scraping plate 45 is embedded in the front end of the treatment tank 1, and a notch is provided at the rear end of the treatment tank 1 corresponding to the position of the scraping plate 45. A delivery pipe 14 is arranged at the tail end of the treatment tank 1 corresponding to the bottom of the four filter plates 13, and the delivery pipe 14 is rotatably installed at the tail end of the treatment tank 1 through a bearing. Four receiving pipes 23 are arranged at the front end of the crystallization tank 2, and the receiving pipes 23 are alternately corresponding to the delivery pipe 14. When using the device, the pickled vegetable pickling wastewater is intermittently fed from the water inlet 11, and the wastewater is alternately filtered by the four groups of filter plates 13 and partitions 12 inside the treatment tank 1. The impurities are isolated by the filter plates 13, and the wastewater is fed into the interior of the crystallization tank 2. The four electrodialysis chambers 210 inside the crystallization tank 2 alternately receive the wastewater and perform electrodialysis and evaporation crystallization. The evaporated gas is sent into the biological treatment tank 31 through the exhaust pipe 21 and the condenser 22. The salt crystals can be manually collected after the crystallization plate 211 is taken out and treated separately.

[0042] In this embodiment, a motor 5 is fixed at the center of the front end of the processing box 1, and the output end of the motor 5 is fixedly connected to the central axis of the partition plate 12. A shaft rod 26 is rotatably installed at the axis center of the crystallization box 2, and the shaft rod 26 passes through the front end of the crystallization box 2. The central axis of the partition plate 12 passes through the processing box 1 and is fixedly connected to the shaft rod 26. At the front end of the shaft rod 26, a connecting frame 29 is fixed corresponding to the positions of the four electrodialysis chambers 210, and the connecting frame 29 is fixedly connected to the shaft rod 26 and the electrodialysis chambers 210. A heater 27 is fixed on the inner wall of the tail end of the crystallization box 2, and an elastic extrusion layer is arranged at the top of the heater 27. The elastic extrusion layer of the heater 27 contacts the bottom of the crystallization plate 211 at the uppermost end of the crystallization box 2. By driving the partition plate 12 and the filter plate 13 to rotate through the motor 5, the four filter plates 13 can be cyclically corresponding to the position of the water inlet 11, avoiding blockage caused by long-term use of the filter plates 13. At the same time, as the partition plate 12 rotates, the shaft rod 26 drives the electrodialysis chambers 210 to rotate through the connecting frame 29, so that the electrodialysis chambers 210 and the crystallization plate 211 are respectively located at the positions of receiving wastewater, the electrodialysis stage and the evaporation stage. At the top, the wastewater on the crystallization plate 211 is evaporated by the heater 27, and the generated gas is sent into the biological treatment box 31 through the exhaust pipe 21 and the condenser 22 for subsequent wastewater treatment.

[0043] In this embodiment, the cleaning assembly 4 further includes an electric push rod 41. The electric push rod 41 is fixed on the outer wall of the processing box 1, and the extended end of the electric push rod 41 is fixed with a connecting plate 44. One end of the connecting plate 44 is fixed with a first connecting rod 42 corresponding to the position of the scraping plate 45, and the first connecting rod 42 penetrates into the processing box 1 and is fixedly connected to the scraping plate 45. A delivery port 28 is opened at the tail end of the crystallization box 2 at the position of one crystallization plate 211. The other end of the connecting plate 44 is fixed with a second connecting rod 43, and the other end of the second connecting rod 43 penetrates into the crystallization box 2 and is in extrusion contact with the front end of the crystallization plate 211. The electric push rod 41 drives the connecting plate 44 to move, and the first connecting rod 42 and the second connecting rod 43 move together with the connecting plate 44. The first connecting rod 42 drives the scraping plate 45 to move along the surfaces of the two partition plates 12 and the filter plates 13 at the bottom of the processing box 1, and sends the accumulated impurities out from the outlet end at the tail end of the processing box 1. The second connecting rod 43 penetrates into the crystallization box 2 and extrudes the crystallization plate 211, and pushes the crystallization plate 211 out from the delivery port 28 at the tail end of the crystallization box 2, facilitating the manual removal of the salt crystals on the crystallization plate 211.

[0044] In this embodiment, a turntable 24 is rotatably installed on the front surface of the crystallization tank 2, and the electrodialysis chamber 210 is fixedly connected to the turntable 24. A connection layer 25 is fixed at the center of the turntable 24. The four receiving pipes 23 are in sliding contact with the outer end of the connection layer 25. A central column 214 is fixed at the center of the connection layer 25. An upper through hole 215 is opened at the upper end of the central column 214, and vertical grooves 212 are provided on both sides of the upper through hole 215. The bottom of the vertical groove 212 penetrates into the connection layer 25, and lower through holes 213 corresponding to the receiving pipes 23 are opened at the bottom of the connection layer 25. The lower through holes 213 communicate with the vertical grooves 212. The delivery pipe 14 rotates with the partition plate 12 and the filter plate 13. Since the shaft rod 26 is fixedly connected to the central axis of the partition plate 12, the receiving pipes 23 will also rotate synchronously. On the connection layer 25 and the central column 214, only the upper end of the central column 214 is provided with the upper through hole 215 communicating with the delivery pipe 14, and the connection layer 25 is only provided with the lower through hole 213 communicating with the lower receiving pipes 23. Moreover, the upper through hole 215 and the lower through hole 213 are connected through the vertical grooves 212 on both sides, which can prevent the lower delivery pipe 14 from interfering with the conveyance of the wastewater. The upper delivery pipe 14 sends the wastewater into the interior of the receiving pipes 23 through the upper through hole 215, the vertical grooves 212 and the lower through holes 213. The receiving pipes 23 are slidably inserted into the crystallization plates 211. The wastewater enters the interior of the electrodialysis chamber 210 for dialysis work. The four delivery pipes 14 and the connection pipes 31 can alternately send and receive the wastewater one by one, avoiding the overlong use time of a group.

[0045] When using the device, the pickled vegetable pickling wastewater is intermittently fed from the water inlet 11. By driving the partition plate 12 and the filter plate 13 to rotate through the motor 5, the four groups of filter plates 13 can be cycled to correspond to the position of the water inlet 11, avoiding blockage caused by long-term use of the filter plate 13. At the same time, as the partition plate 12 rotates, the shaft rod 26 drives the electrodialysis chamber 210 to rotate through the connecting frame 29, so that the electrodialysis chamber 210 and the crystallization plate 211 are respectively located at the positions for receiving wastewater, the electrodialysis stage and the evaporation stage. At the top, the wastewater on the crystallization plate 211 is evaporated by the heater 27, and the generated gas is sent into the biological treatment tank 31 through the exhaust pipe 21 and the condenser 22 for subsequent wastewater treatment. Since the shaft rod 26 is fixedly connected to the central axis of the partition plate 12, the receiving pipe 23 will also rotate synchronously. On the connecting layer 25 and the central column 214, only the upper end of the central column 214 is provided with an upper through hole 215 communicating with the delivery pipe 14, and the connecting layer 25 is only provided with a lower through hole 213 communicating with the lower receiving pipe 23, and the upper through hole 215 and the lower through hole 213 are connected by the vertical grooves 212 on both sides, which can prevent the lower delivery pipe 14 from interfering with the conveyance of wastewater. The upper delivery pipe 14 sends the wastewater into the interior of the receiving pipe 23 through the upper through hole 215, the vertical groove 212 and the lower through hole 213. The receiving pipe 23 is slidably inserted into the crystallization plate 211, and the wastewater enters the interior of the electrodialysis chamber 210 for dialysis work. The four delivery pipes 14 and the connecting pipes 31 can alternately send and receive wastewater one by one, avoiding excessive use of a single group for too long. The wastewater is sent into the crystallization tank 2. The four electrodialysis chambers 210 in the crystallization tank 2 alternately receive wastewater and perform electrodialysis and evaporation crystallization. The evaporated gas is sent into the biological treatment tank 31 through the exhaust pipe 21 and the condenser 22. The first connecting rod 42 and the second connecting rod 43 move together with the connecting plate 44. The first connecting rod 42 drives the scraper 45 to move along the surfaces of the two partition plates 12 and the filter plate 13 at the bottom of the treatment tank 1, and sends the accumulated impurities out from the outlet end at the tail end of the treatment tank 1. The second connecting rod 43 penetrates into the crystallization tank 2 to squeeze the crystallization plate 211, and pushes the crystallization plate 211 out from the delivery outlet 28 at the tail end of the crystallization tank 2, facilitating the manual removal of the salt crystals on the crystallization plate 211.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic features of the present invention, the present invention can be implemented in other specific forms.

[0047] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A treatment device for pickled vegetable pickling wastewater, comprising a treatment tank (1), characterized in that: Inside the treatment tank (1), four partitions (12) are symmetrically fixed at the center of the circle. A filter plate (13) is fixed between adjacent partitions (12), and the filter plate (13) is arc-shaped. At the upper end of the treatment tank (1), a water inlet (11) is provided corresponding to the space between two partitions (12). At the tail end of the treatment tank (1), there is a crystallization tank (2). Inside the crystallization tank (2), four electrodialysis chambers (210) are symmetrically arranged at the center of the circle, and a crystallization plate (211) is slidably inserted into the electrodialysis chamber (210). At the top of the crystallization tank (2), three exhaust pipes (21) are provided, and a condenser (22) is fixedly installed at the outer end of the exhaust pipe (21). A connecting pipe (31) is fixed on one side of the condenser (22), and the other end of the connecting pipe (31) is fixedly connected to a biological treatment tank (3)(1). A cleaning assembly (4) is provided outside the treatment tank (1). The cleaning assembly (4) includes a scraper (45). A scraper (45) is provided between two partitions (12) at the bottom of the treatment tank (1), and the scraper (45) slides along the inner wall of the bottom of the treatment tank (1) and the filter plate (13). The scraper (45) is embedded in the front end of the treatment tank (1), and a notch is provided at the corresponding position of the rear end of the treatment tank (1) for the scraper (45). At the position corresponding to the bottom of the four filter plates (13) at the tail end of the treatment tank (1), a delivery pipe (14) is provided, and the delivery pipe (14) is rotatably installed at the tail end of the treatment tank (1) through a bearing. At the front end of the crystallization tank (2), four receiving pipes (23) are provided, and the receiving pipes (23) alternately correspond to the delivery pipe (14).

2. The treatment equipment for pickled vegetable pickling wastewater according to claim 1, characterized in that: A motor (5) is fixed at the center of the front end of the treatment tank (1), and the output end of the motor (5) is fixedly connected to the central axis of the partition (12). A shaft rod (26) is rotatably installed at the center of the crystallization tank (2), and the shaft rod (26) passes through the front end of the crystallization tank (2). The central axis of the partition (12) passes through the treatment tank (1) and is fixedly connected to the shaft rod (26).

3. The treatment equipment for pickled vegetable pickling wastewater according to claim 2, wherein: At the front end of the shaft rod (26), a connecting frame (29) is fixed corresponding to the positions of the four groups of electrodialysis chambers (210), and the connecting frame (29) is fixedly connected to the shaft rod (26) and the electrodialysis chamber (210).

4. The treatment equipment for pickled vegetable pickling wastewater according to claim 3, characterized in that: A heater (27) is fixed on the inner wall at the tail end of the crystallization tank (2), and an elastic extrusion layer is provided at the top of the heater (27). The elastic extrusion layer of the heater (27) contacts the bottom of the crystallization plate (211) at the uppermost end of the crystallization tank (2).

5. The treatment equipment for pickled vegetable pickling wastewater according to claim 4, characterized in that: The cleaning assembly (4) further includes an electric push rod (41). An electric push rod (41) is fixed on the outer wall of the treatment tank (1), and a connecting plate (44) is fixed at the extending end of the electric push rod (41). At one end of the connecting plate (44), a first connecting rod (42) is fixed corresponding to the position of the scraper (45), and the first connecting rod (42) passes through the treatment tank (1) and is fixedly connected to the scraper (45).

6. The treatment equipment for pickled vegetable pickling wastewater according to claim 5, characterized in that: At the end of the crystallization tank (2), a discharge port (28) is provided at the position of one side crystallization plate (211). The other end of the connecting plate (44) is fixed with a second connecting rod (43), and the other end of the second connecting rod (43) penetrates into the crystallization tank (2) and is in pressing contact with the front end of the crystallization plate (211).

7. The treatment equipment for pickled vegetable pickling wastewater according to claim 1, characterized in that: A turntable (24) is rotatably installed on the front surface of the crystallization tank (2), and the electrodialysis chamber (210) is fixedly connected to the turntable (24). A connecting layer (25) is fixed at the center of the turntable (24), and the four receiving pipes (23) are in sliding contact with the outer end of the connecting layer (25).

8. The treatment equipment for pickled vegetable pickling wastewater according to claim 7, characterized in that: A central column (214) is fixed at the center of the connecting layer (25). An upper through hole (215) is provided at the upper end of the central column (214), and vertical grooves (212) are provided on both sides of the upper through hole (215).

9. The treatment equipment for pickled vegetable pickling wastewater according to claim 8, characterized in that: The bottom of the vertical groove (212) penetrates into the connecting layer (25), and a lower through hole (213) is provided at the position of the connecting layer (25) corresponding to the receiving pipe (23). The lower through hole (213) is communicated with the vertical groove (212).

10. A method for treating pickled vegetable pickling wastewater implemented by the device according to claim 1, characterized in that: The treatment method includes the following steps: (1) The pickled vegetable wastewater is intermittently fed from the water inlet, and the wastewater is filtered alternately by four groups of filter plates and partition plates inside the treatment tank, and the impurities are isolated by the filter plates; (2) The four groups of delivery pipes and receiving pipes are alternately docked on the connecting layer, and the wastewater is fed into the crystallization tank. The four electrodialysis chambers inside the crystallization tank alternately receive the wastewater and perform electrodialysis and evaporation crystallization; (3) The evaporated gas is sent into the biological treatment tank through the exhaust pipe and the condenser, and the metabolism of microorganisms is carried out by the activated sludge method in the biological treatment tank to convert the organic matter in the wastewater into simple inorganic substances and carbon dioxide and other substances; (4) The salt crystals can be manually collected after being extracted from the crystallization plate by the cleaning component, and are treated separately, and the impurities accumulated on the filter plate are cleaned by the scraper.

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