Microbial electrochemical coupling desulfurization device and method

Abstract

The invention discloses a microbial electrochemical coupling desulfurization device and method, and belongs to the technical field of microbial electrochemical sewage treatment. A microbial electrochemical coupling desulfurization device comprises a base, and an air flotation device, a desulfurization device body and an aerobic device which are sequentially and fixedly mounted on the surface of the base, an anode assembly and a cathode assembly are correspondingly and fixedly mounted in the desulfurization device body, and sliding plates are slidably connected to the surfaces of the anode assembly and the cathode assembly. Compared with traditional cathode and anode plates, the microbial electrochemical coupling desulfurization device has the advantages that the cathode and anode plates are made into a plurality of cylindrical conductive columns, the contact area between the conductive columns and sulfur-containing sewage can be increased, and meanwhile, the cleaning ring scrapes attachments on the surfaces of the plurality of conductive columns, so that long-time contact between the conductive columns and the sulfur-containing sewage is guaranteed; and the connecting plate reciprocates to circulate sulfur-containing sewage near the anode assembly and the cathode assembly, so that the sewage treatment effect and efficiency of the anode assembly and the cathode assembly are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of microbial electrochemical sewage treatment, and more specifically to a microbial electrochemical coupled desulfurization device and method. Background Art

[0002] Sulfur-containing wastewater is produced during industrial production. Microbial electrochemical wastewater treatment is a wastewater treatment technology that combines the metabolism of microorganisms with electrochemical reactions. When treating sulfur-containing wastewater, a microbial electrochemical coupled desulfurization device is required.

[0003] Chinese patent application number CN202311022337.8 discloses a microbial electrochemical coupled desulfurization device and method, which relates to the field of microbial electrochemical water treatment technology. The microbial electrochemical coupled desulfurization device includes a flotation unit, a desulfurization unit and an aerobic unit. The flotation unit removes suspended matter and oil pollutants in the wastewater. The microorganisms in the desulfurization unit and the aerobic unit reduce sulfates, thiosulfates and sulfites in the sulfur-containing wastewater to sulfides, degrade organic matter in the wastewater, and convert chemical energy into electrical energy to power the electrical equipment in the desulfurization device.

[0004] In the above technical scheme, while meeting the discharge standards of petrochemical wastewater, it can effectively reduce the energy consumption and operating costs of sulfur-containing wastewater treatment. The microbial electrochemical coupled desulfurization devices currently on the market still have some shortcomings. For example, the anode plate and the cathode plate are usually long strips, and other compounds will be produced during sewage treatment. These compounds will adhere to the surface of the anode and cathode plates, resulting in a decrease in the contact area between the anode and cathode plates and the sewage, thereby affecting the treatment effect and efficiency. In addition, microbial slurry needs to be added during desulfurization in the desulfurization device, but the feeding pipe extends to the interior of the desulfurization device. During the feeding process, the slurry will accumulate at the port of the feeding pipe, thereby affecting the fusion speed of the microbial slurry and the sulfur-containing sewage and reducing the treatment efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide a microbial electrochemical coupled desulfurization device to solve the problems raised in the above background technology: In order to achieve the above object, the present invention provides the following technical solutions: A microbial electrochemical coupled desulfurization device, comprising a base and an air flotation device, a desulfurization device body and an aerobic device fixedly installed on the surface of the base in sequence, wherein an anode assembly and a cathode assembly are fixedly installed inside the desulfurization device body in correspondence, and sliding plates are slidably connected to the surfaces of the anode assembly and the cathode assembly, and a connecting plate is fixedly connected between the two sliding plates, and a hollow threaded pipe for unloading is fixedly installed on the top surface of the inner part of the desulfurization device body, and a hollow rotating rod that can rotate up and down is arranged on the surface of the hollow threaded pipe, and a uniform sprinkler connected to the bottom surface of the hollow rotating rod is fixedly installed. A rotating shaft is arranged between the evenly distributed plate and the connecting plate, and the evenly distributed plate is rotatably connected to the connecting plate through the rotating shaft. The anode assembly and the cathode assembly both include a conductive plate, and an insulating rod is fixedly installed in the middle of the bottom surface of the two conductive plates. A plurality of conductive pillars are arranged in a circular array on the bottom surface of the two conductive plates, and the plurality of conductive pillars are electrically connected to the conductive plate. An inserting plate is inserted into the surface of one end of the plurality of conductive pillars, and the surfaces of the two sliding plates are provided with through-type slots having the same number as the conductive pillars, and a cleaning ring for cleaning the surface of the conductive pillars is fixedly installed inside any of the slots.

[0006] By adopting the above technical scheme, compared with traditional anode and cathode plates, the contact area between the conductive columns and the sulfur-containing sewage can be increased by making the anode and cathode plates into multiple cylindrical conductive columns. At the same time, the cleaning ring scrapes off the surface attachments of the multiple conductive columns to ensure that the conductive columns are in contact with the sulfur-containing sewage for a long time, and the reciprocating motion of the connecting plate can circulate the sulfur-containing sewage near the anode assembly and the cathode assembly, thereby increasing the sewage treatment effect and efficiency of the anode assembly and the cathode assembly; microbial slurry is added to the hollow threaded tube, and the upward movement of the connecting plate also moves the evenly distributed plate, the rotating shaft, the hollow rotating rod and the threaded ring upward. At this time, the hollow rotating rod rotates upward on the surface of the hollow threaded tube, and the evenly distributed plate follows the upward rotation of the hollow rotating rod to evenly distribute the slurry. Compared with the traditional feeding method, the evenly distributed plate follows the upward rotation of the hollow rotating rod to evenly distribute the slurry to avoid the accumulation of slurry at the pipe mouth. The reciprocating motion of the connecting plate can also realize the rapid fusion of the microbial slurry and the sulfur-containing sewage, thereby improving the treatment speed and efficiency of the sulfur-containing sewage.

[0007] Preferably, the surfaces of the two conductive disks are insulated, and the plurality of conductive columns are arranged around the circumference of the insulating rod. Mounting frames are fixedly mounted on the surfaces of the two conductive disks, and the anode assembly and the cathode assembly are fixedly mounted inside the desulfurization device body through the two mounting frames respectively.

[0008] By adopting the above technical solution and making the anode and cathode plates into multiple cylindrical conductive columns, the contact area between the conductive columns and the sulfur-containing wastewater can be increased.

[0009] Preferably, the end surfaces of the two insulating rods are provided with threads. After the insulating rod is plugged into the plug-in disk, one end of the insulating rod extends to one side of the plug-in disk. A nut threadedly connected to the thread is provided under the plug-in disk. A plurality of mounting rings are fixedly installed on the surface of the sliding disk, and the mounting rings are fixedly connected to the surface of the sliding disk by screws.

[0010] Preferably, a threaded ring matching the hollow threaded tube is fixedly mounted on the top surface of the hollow rotating rod, the hollow rotating rod is threadedly connected to the hollow threaded tube via the threaded ring, the hollow threaded tube, the hollow rotating rod and the evenly distributed distribution plate are connected, a plurality of grooves connected thereto are provided on the surface of the evenly distributed distribution plate, and an arc slope is fixedly connected to the inner bottom surface of the evenly distributed distribution plate.

[0011] By adopting the above technical solution and the slope design of the arc slope, when the microbial slurry acts on the surface of the arc slope, the spreading disc rotates and the microbial slurry is easily spread out.

[0012] Preferably, a screw is rotatably connected to the inner top surface of the desulfurization device body, a threaded hole matching the screw is opened on the surface of the connecting plate, the screw is threadedly connected to the connecting plate through the threaded hole, a motor is fixedly installed on the top surface of the desulfurization device body, the output end of the motor is fixedly connected to the screw, and an insulating tube for protecting the line is fixedly installed on the top surfaces of the anode assembly and the cathode assembly, and the insulating tube is fixedly connected to the surface of the conductive disk.

[0013] Preferably, a battery box is fixedly mounted on the top surface of the desulfurization device body, a battery is fixedly mounted inside the battery box, the battery is electrically connected to the conductive disk through a wire, a bracket is fixedly connected to the side surface of the desulfurization device body, a photovoltaic panel is fixedly mounted on the top surface of the bracket, and the photovoltaic panel is electrically connected to the battery.

[0014] Preferably, a slag discharge pipe and a water inlet pipe connected to the flotation device are fixedly installed on the surface thereof, a mud discharge pipe connected to the flotation device is fixedly installed on the bottom surface thereof, a connecting pipe 1 is fixedly connected between the flotation device and the desulfurization device body, a connecting pipe 2 is fixedly connected between the desulfurization device body and the aerobic device, a first pump for conveying sewage is fixedly installed on the surface of the connecting pipe 1, a second pump for conveying sewage is fixedly installed on the surface of the connecting pipe 2, and a discharge pipe connected to the flotation device is fixedly installed on the surface thereof.

[0015] Preferably, a feeding pipe connected to the hollow threaded pipe is fixedly mounted on the top surface of the desulfurization device body, and a feed pipe is fixedly mounted on the top surface of the aerobic device.

[0016] Preferably, an aerator is fixedly mounted on the surface of the aerobic device, an air inlet pipe is fixedly mounted on the air inlet of the aerator, a serpentine pipe is fixedly mounted on the inner bottom surface of the aerobic device, the serpentine pipe is connected to the air outlet of the aerator, a plurality of aeration holes are opened on the surface of the serpentine pipe, and a fixing base for supporting the aerator is fixedly mounted on the surface of the aerobic device.

[0017] By adopting the above technical solution, the aerator works, the gas enters the serpentine tube from the air inlet pipe, and the gas is discharged from the aeration holes on the surface of the serpentine tube, thereby increasing the aeration volume, providing sufficient gas for aerobic microorganisms to decompose sulfur compounds in the sewage, maintaining the activity of aerobic microorganisms, promoting their oxidation and decomposition of sulfides, and converting sulfides into harmless substances. The gas discharged from the aeration holes and the bubbles will drive the suspended matter in the sewage to move together during the rising process, preventing the suspended matter from settling in the sewage treatment tank, maintaining the uniform state of the sewage, facilitating the sewage treatment, accelerating the reaction speed, and improving the treatment efficiency.

[0018] A microbial electrochemical coupled desulfurization method, the steps of which are as follows: S1: The sulfur-containing wastewater enters the flotation device through the water inlet pipe. The flotation device is equipped with conventional flotation machines and scrapers in the prior art. Subsequently, the suspended matter and oil pollutants in the wastewater are effectively removed under the action of the flotation machine and scraper. The floating oil and floating scum are discharged from the slag discharge pipe, and the sediment is discharged from the mud discharge pipe. After the flotation device has finished processing the floating oil and floating scum in the sulfur-containing wastewater, the first pump works to transport the sulfur-containing wastewater to the inside of the desulfurization device body through the first pump. S2: The battery supplies power to the anode assembly. The electricity-producing microorganisms in the anode assembly use the organic matter in the sewage as electron donors to undergo an oxidation reaction, converting the chemical energy in the sewage organic matter into electrical energy and protons. The electrons are transferred to the cathode assembly through an external circuit. The protons migrate from the anode assembly to the cathode assembly. In the cathode assembly, the electrons, protons and oxygen undergo a reduction reaction to generate water, forming an electric current. When the anode assembly and the cathode assembly treat the sulfur-containing sewage for a long time, the motor is rotating and driving the screw to rotate, causing the connecting plate to move upward and driving the two sliding disks to move upward on the surface of the anode assembly and the cathode assembly. During the movement of the two sliding disks, the cleaning rings are used to scrape the surfaces of multiple conductive columns. S3: while the motor is working, microbial slurry is added into the hollow threaded tube, the connection plate moves upward, and also moves upward with the evenly distributed plate, the rotating shaft, the hollow rotating rod and the threaded ring, the threaded ring is threadedly connected to the hollow threaded tube, at this time the hollow rotating rod rotates upward on the surface of the hollow threaded tube, at this time the microbial slurry in the hollow threaded tube will fall into the evenly distributed plate, the evenly distributed plate rotates upward with the hollow rotating rod, and the slurry in the evenly distributed plate is evenly distributed upward through the slotted rotation; S4: When the aerator is working, the gas enters the serpentine tube from the air inlet pipe, and the gas is discharged from the aeration holes on the surface of the serpentine tube, increasing the aeration volume, providing sufficient gas for aerobic microorganisms to decompose sulfur compounds in the sewage, maintaining the activity of aerobic microorganisms, promoting their oxidation and decomposition of sulfides, and converting sulfides into harmless substances. The gas discharged from the aeration holes and the bubbles will move together in the process of rising, preventing the suspended matter from settling in the sewage treatment tank, keeping the sewage in a uniform state, which is beneficial to the sewage treatment, accelerating the reaction speed, and improving the treatment efficiency.

[0019] Compared with the prior art, the present invention has the following beneficial effects: 1) When the microbial electrochemical coupled desulfurization device is in use, compared with traditional anode and cathode plates, the contact area between the conductive columns and the sulfur-containing wastewater can be increased by making the anode and cathode plates into multiple cylindrical conductive columns. At the same time, the cleaning ring scrapes off the surface attachments of the multiple conductive columns to ensure that the conductive columns are in contact with the sulfur-containing wastewater for a long time. The reciprocating motion of the connecting plate can circulate the sulfur-containing wastewater near the anode assembly and the cathode assembly, thereby increasing the treatment effect and efficiency of the anode assembly and the cathode assembly on the wastewater.

[0020] 2) When the microbial electrochemical coupled desulfurization device is in use, microbial slurry is added into the hollow threaded pipe, and the connecting plate moves upward with the evenly distributed plate, the rotating shaft, the hollow rotating rod and the threaded ring. At this time, the hollow rotating rod rotates upward on the surface of the hollow threaded pipe, and the evenly distributed plate follows the upward rotation of the hollow rotating rod to evenly distribute the slurry. Compared with the traditional feeding method, the evenly distributed plate follows the upward rotation of the hollow rotating rod to evenly distribute the slurry, avoiding the accumulation of slurry at the pipe mouth. The reciprocating motion of the connecting plate can also realize the rapid fusion of the microbial slurry and the sulfur-containing wastewater, thereby improving the treatment speed and efficiency of the sulfur-containing wastewater.

[0021] 3) When the microbial electrochemical coupled desulfurization device is in use, the aerator works to let the gas enter the serpentine tube from the air inlet pipe, and the gas is then discharged from the aeration holes on the surface of the serpentine tube, increasing the aeration volume, providing sufficient gas for aerobic microorganisms to decompose sulfur compounds in the sewage, maintaining the activity of aerobic microorganisms, promoting their oxidation and decomposition of sulfides, and converting sulfides into harmless substances. The gas discharged from the aeration holes and the bubbles will drive the suspended matter in the sewage to move during the rising process, preventing the suspended matter from settling in the sewage treatment tank, maintaining the uniform state of the sewage, facilitating sewage treatment, accelerating the reaction speed, and improving the treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the position structure of the flotation device, the desulfurization device and the aerobic device of the present invention; Figure 3 It is a schematic diagram of the position structure of the desulfurization device and the aerobic device of the present invention; Figure 4 It is a schematic diagram of the structure of the desulfurization device of the present invention; Figure 5 It is a schematic diagram of the internal analysis of the desulfurization device of the present invention; Figure 6 It is a schematic diagram of the overall position structure of the anode and cathode of the present invention; Figure 7 It is an exploded schematic diagram of the overall structure of the anode of the present invention; Figure 8 It is a schematic diagram of the sliding plate structure of the present invention; Fig. 9 It is a cross-sectional view of the hollow threaded tube and the hollow rotating rod of the present invention; Fig.10 It is a schematic diagram of the serpentine tube structure of the present invention.

[0023] Explanation of the numbers in the figure: 1. base; 2. air flotation device; 3. desulfurization device body; 4. anode overall; 5. cathode overall; 6. connecting plate; 7. conductive plate; 8. insulating rod; 9. conductive column; 10. sliding plate; 11. insert plate; 12. notch; 13. cleaning ring; 14. hollow threaded pipe; 15. hollow rotating rod; 16. evenly distributed plate; 17. rotating shaft; 18. mounting frame; 19. threaded wire; 20. nut; 21. mounting ring; 22. threaded ring; 23. slot; 24. arc slope; 2 5. Screw rod; 26. Threaded hole; 27. Motor; 28. Insulating tube; 29. ​​Battery box; 30. Storage battery; 31. Bracket; 32. Photovoltaic panel; 33. Slag discharge pipe; 34. Water inlet pipe; 35. Mud discharge pipe; 36. Connecting pipe 1; 37. Connecting pipe 2; 38. First pump; 39. Second pump; 40. Discharge pipe; 41. Feeding pipe; 42. Feeding pipe; 43. Fixed seat; 44. Inlet pipe; 45. Aerator; 46. Serpentine pipe; 47. Aeration hole; 48. Aerobic device. DETAILED DESCRIPTION

[0024] Example 1: Please refer to Figure 1 - Fig.10A microbial electrochemical coupled desulfurization device comprises a base 1 and an air flotation device 2, a desulfurization device body 3 and an aerobic device 48 fixedly mounted on the surface thereof in sequence. The air flotation device 2 is a conventional air flotation device 2 in the prior art. The air flotation device 2 is provided with a conventional air flotation machine and a scraper in the prior art. The desulfurization device body 3 is a conventional desulfurization device body 3 in the prior art. An anode assembly 4 and a cathode assembly 5 are correspondingly fixedly mounted in the desulfurization device body 3. By making the positive and negative electrodes into multiple cylindrical conductive columns 9, the contact area between the conductive columns 9 and the sulfur-containing wastewater can be increased. At the same time, a cleaning ring 13 scrapes off the surface attachments of the multiple conductive columns 9. The surfaces of the anode assembly 4 and the cathode assembly 5 are both slidably connected with a sliding disk 10. A connecting plate 6 is fixedly connected between the two sliding plates 10. The reciprocating motion of the connecting plate 6 can transfer the sulfur-containing wastewater near the anode assembly 4 and the cathode assembly 5. The reciprocating motion of the connecting plate 6 can also realize the rapid fusion of the microbial slurry and the sulfur-containing wastewater. A hollow threaded pipe 14 for unloading is fixedly installed on the internal top surface of the desulfurization device body 3. The hollow threaded pipe 14 enables the hollow rotating rod 15 to rotate upward on the surface of the hollow threaded pipe 14. The surface of the hollow threaded pipe 14 is provided with a hollow rotating rod 15 that can rotate up and down. The bottom surface of the hollow rotating rod 15 is fixedly installed with a uniformly spreading plate 16 connected to it. The uniformly spreading plate 16 follows the upward rotation of the hollow rotating rod 15 to evenly spread the slurry. A rotating shaft 17 is provided between the evenly distributed plate 16 and the connecting plate 6, and the evenly distributed plate 16 is rotatably connected to the connecting plate 6 through the rotating shaft 17. The anode assembly 4 and the cathode assembly 5 both include a conductive plate 7, and an insulating rod 8 is fixedly installed in the middle of the bottom surface of the two conductive plates 7. The bottom surfaces of the two conductive plates 7 are both provided with a plurality of conductive pillars 9 in a circumferential array, and the plurality of conductive pillars 9 are electrically connected to the conductive plates 7. An inserting plate 11 is plugged into the surface of one end of the plurality of conductive pillars 9. The surfaces of the two sliding plates 10 are both provided with through-type slots 12 having the same number as the conductive pillars 9, and a cleaning ring 13 for cleaning the surface of the conductive pillar 9 is fixedly installed inside any of the slots 12, and a rubber pad is installed on the inner side of the cleaning ring 13 to prevent the cleaning ring 13 from scratching the surface of the conductive pillar 9. The motor 27 rotates the lead screw 25 forward and reversely, so that the connecting plate 6 moves upward and the two sliding plates 10 move upward on the surface of the anode assembly 4 and the cathode assembly 5. During the movement of the two sliding plates 10, the cleaning ring 13 scrapes the surface of the multiple conductive columns 9. Compared with the traditional anode and cathode plates, the contact area between the conductive columns 9 and the sulfur-containing wastewater can be increased by making the anode and cathode plates into multiple cylindrical conductive columns 9. At the same time, the cleaning ring 13 scrapes the surface attachments of the multiple conductive columns 9 to ensure that the conductive columns 9 are in contact with the sulfur-containing wastewater for a long time. The reciprocating movement of the connecting plate 6 can circulate the sulfur-containing wastewater near the anode assembly 4 and the cathode assembly 5, thereby increasing the treatment effect and efficiency of the anode assembly 4 and the cathode assembly 5 on the wastewater.Add microbial slurry into the hollow threaded tube 14, the connecting plate 6 moves upward and also moves the evenly distributed plate 16, the rotating shaft 17, the hollow rotating rod 15 and the threaded ring 22 upward. At this time, the hollow rotating rod 15 rotates upward on the surface of the hollow threaded tube 14, and the evenly distributed plate 16 follows the hollow rotating rod 15 to rotate upward to evenly distribute the slurry. Compared with the traditional feeding method, the evenly distributed plate 16 follows the hollow rotating rod 15 to rotate upward to evenly distribute the slurry, avoiding the accumulation of slurry at the pipe mouth. The reciprocating motion of the connecting plate 6 can also realize the rapid fusion of the microbial slurry and the sulfur-containing sewage, thereby improving the treatment speed and efficiency of the sulfur-containing sewage. ;

[0025] The surfaces of the two conductive disks 7 are insulated, and a plurality of conductive columns 9 are arranged around the circumference of the insulating rod 8. The surfaces of the two conductive disks 7 are fixedly mounted with mounting frames 18. The anode assembly 4 and the cathode assembly 5 are respectively fixedly mounted inside the desulfurization device body 3 through two mounting frames 18. By making the anode and cathode plates into a plurality of cylindrical conductive columns 9, the contact area between the conductive columns 9 and the sulfur-containing wastewater can be increased.

[0026] The end surfaces of the two insulating rods 8 are both provided with threads 19. After the insulating rod 8 is plugged into the plug-in disk 11, one end of the insulating rod 8 extends to one side of the plug-in disk 11. A nut 20 threadedly connected to the thread 19 is provided below the plug-in disk 11. A plurality of mounting rings 21 are fixedly installed on the surface of the sliding disk 10. The mounting rings 21 are fixedly connected to the surface of the sliding disk 10 by screws, which facilitates the disassembly and assembly of the sliding disk 10.

[0027] A threaded ring 22 matching the hollow threaded tube 14 is fixedly mounted on the top surface of the hollow rotating rod 15. The hollow rotating rod 15 is threadedly connected to the hollow threaded tube 14 through the threaded ring 22. The hollow threaded tube 14, the hollow rotating rod 15 and the evenly distributed distribution plate 16 are connected. A plurality of grooves 23 connected thereto are provided on the surface of the evenly distributed distribution plate 16. An arc slope 24 is fixedly connected to the inner bottom surface of the evenly distributed distribution plate 16. Due to the slope design of the arc slope 24, when the microbial slurry acts on the surface of the arc slope 24, the evenly distributed distribution plate 16 rotates, and the microbial slurry is easily sprinkled out.

[0028] A screw rod 25 is rotatably connected to the inner top surface of the desulfurization device body 3, and a threaded hole 26 matching the screw rod 25 is opened on the surface of the connecting plate 6. The screw rod 25 is threadedly connected to the connecting plate 6 through the threaded hole 26. A motor 27 is fixedly installed on the top surface of the desulfurization device body 3. The motor 27 is a conventional forward and reverse motor in the prior art. The output end of the motor 27 is fixedly connected to the screw rod 25. The top surfaces of the anode assembly 4 and the cathode assembly 5 are both fixedly installed with an insulating tube 28 for protecting the line, and the insulating tube 28 is fixedly connected to the surface of the conductive disk 7.

[0029] A battery box 29 is fixedly installed on the top surface of the desulfurization device body 3, and a battery 30 is fixedly installed inside the battery box 29. The battery 30 is a conventional battery 30 in the prior art, and the battery 30 is electrically connected to the conductive disk 7 through a wire. A bracket 31 is fixedly connected to the side surface of the desulfurization device body 3, and a photovoltaic panel 32 is fixedly installed on the top surface of the bracket 31. The photovoltaic panel 32 is electrically connected to the battery 30. The photovoltaic panel 32 is a conventional photovoltaic panel 32 in the prior art, and the photovoltaic panel 32 converts light energy into electrical energy and stores it in the battery 30.

[0030] A slag discharge pipe 33 and a water inlet pipe 34 connected to the flotation device 2 are fixedly installed on the surface thereof, a mud discharge pipe 35 connected to the flotation device 2 is fixedly installed on the bottom surface thereof, a connecting pipe 1 36 is fixedly connected between the flotation device 2 and the desulfurization device body 3, a connecting pipe 2 37 is fixedly connected between the desulfurization device body 3 and the aerobic device 48, a first pump 38 for conveying sewage is fixedly installed on the surface of the connecting pipe 1 36, a second pump 39 for conveying sewage is fixedly installed on the surface of the connecting pipe 2 37, a discharge pipe 40 connected to the flotation device 2 is fixedly installed on the surface thereof, the first pump 38 and the second pump 39 are conventional extraction pumps in the prior art, and the first pump 38 and the second pump 39 are powered by a battery 30.

[0031] A feeding pipe 41 connected to the hollow threaded pipe 14 is fixedly mounted on the top surface of the desulfurization device body 3, and the feeding pipe 41 is used to add microbial slurry. A feeding pipe 42 is fixedly mounted on the top surface of the aerobic device 48, and the feeding pipe 42 adds the required microbial slurry.

[0032] The use steps of the present invention are as follows: when the microbial electrochemical coupled desulfurization device is in use, the sulfur-containing sewage enters the flotation device 2 through the water inlet pipe 34. The flotation device 2 is provided with a conventional flotation machine and a scraper in the prior art. Subsequently, the suspended matter and oil pollutants in the wastewater are effectively removed under the action of the flotation machine and the scraper. The floating oil and floating scum are discharged from the scum discharge pipe 33, and the sediment is discharged from the mud discharge pipe 35. After the flotation device 2 has finished processing the floating oil and floating scum in the sulfur-containing sewage, the first pump 38 is operated to transport the sulfur-containing sewage to the interior of the desulfurization device body 3 through the first pump 38. At this time, the battery 30 supplies power to the anode body 4. The power-generating microorganisms in the anode body 4 use the organic matter in the sewage as an electron donor to generate an oxidation reaction to convert the chemical energy in the organic matter in the sewage into The electrons are converted into electrical energy and protons, and the electrons are transmitted to the cathode assembly 5 through the external circuit. The protons migrate from the anode assembly 4 to the cathode assembly 5. In the cathode assembly 5, the electrons, protons and oxygen undergo a reduction reaction to generate water and form an electric current. When the anode assembly 4 and the cathode assembly 5 treat the sulfur-containing wastewater for a long time, the motor 27 is rotating and driving the screw 25 to rotate, so that the connecting plate 6 moves upward and drives the two sliding disks 10 to move upward on the surfaces of the anode assembly 4 and the cathode assembly 5. During the movement of the two sliding disks 10, the cleaning ring 13 is used to scrape the surfaces of the multiple conductive columns 9 (a rubber pad is installed on the inner side of the cleaning ring 13 to prevent the cleaning ring 13 from scratching the surface of the conductive column 9). While the motor 27 is working, microbial slurry is added into the hollow threaded tube 14, and the connecting plate 6 moves upward. The evenly distributed plate 16, the rotating shaft 17, the hollow rotating rod 15 and the threaded ring 22 move upward, and the threaded ring 22 is threadedly connected to the hollow threaded tube 14. At this time, the hollow rotating rod 15 rotates upward on the surface of the hollow threaded tube 14. At this time, the microbial slurry in the hollow threaded tube 14 will fall into the evenly distributed plate 16, and the evenly distributed plate 16 rotates upward with the hollow rotating rod 15, so that the slurry in the evenly distributed plate 16 is rotated upward through the slot 23 to be evenly distributed. After the desulfurization device body 3 completes the treatment of the sulfur-containing wastewater, the second pump 39 works to send the treated wastewater into the aerobic device 48 through the connecting pipe 37, and the microbial slurry is added through the feed pipe 42, and then the desulfurized wastewater is re-treated through the aerobic device 48. The treated wastewater is then discharged through the discharge The outlet pipe 40 is discharged. The scheme rotates the lead screw 25 by the motor 27 in forward and reverse rotation, so that the connecting plate 6 moves upward and the two sliding plates 10 move upward on the surface of the anode assembly 4 and the cathode assembly 5. During the movement of the two sliding plates 10, the cleaning ring 13 scrapes the surface of the multiple conductive columns 9. Compared with the traditional anode and cathode plates, the contact area between the conductive columns 9 and the sulfur-containing wastewater can be increased by making the anode and cathode plates into multiple cylindrical conductive columns 9. At the same time, the cleaning ring 13 scrapes the surface attachments of the multiple conductive columns 9 to ensure that the conductive columns 9 are in contact with the sulfur-containing wastewater for a long time. The reciprocating movement of the connecting plate 6 can circulate the sulfur-containing wastewater near the anode assembly 4 and the cathode assembly 5, thereby increasing the treatment effect and efficiency of the anode assembly 4 and the cathode assembly 5 on the wastewater.Add microbial slurry into the hollow threaded tube 14, the connecting plate 6 moves upward and also moves the evenly distributed plate 16, the rotating shaft 17, the hollow rotating rod 15 and the threaded ring 22 upward. At this time, the hollow rotating rod 15 rotates upward on the surface of the hollow threaded tube 14, and the evenly distributed plate 16 follows the hollow rotating rod 15 to rotate upward to evenly distribute the slurry. Compared with the traditional feeding method, the evenly distributed plate 16 follows the hollow rotating rod 15 to rotate upward to evenly distribute the slurry, avoiding the accumulation of slurry at the pipe mouth. The reciprocating motion of the connecting plate 6 can also realize the rapid fusion of the microbial slurry and the sulfur-containing sewage, thereby improving the treatment speed and efficiency of the sulfur-containing sewage. ;

[0033] Example 2: Please refer to Figure 1 - Fig.10 , the difference from the first embodiment is that an aerator 45 is fixedly installed on the surface of the aerobic device 48, an air inlet pipe 44 is fixedly installed on the air inlet of the aerator 45, a serpentine pipe 46 is fixedly installed on the inner bottom surface of the aerobic device 48, the serpentine pipe 46 is connected to the air outlet of the aerator 45, a plurality of aeration holes 47 are opened on the surface of the serpentine pipe 46, a fixing seat 43 for supporting the aerator 45 is fixedly installed on the surface of the aerobic device 48, and the aerator 45 works to pass the gas from the air inlet pipe 44 into the serpentine pipe 46 The gas is then discharged from the aeration holes 47 on the surface of the serpentine tube 46, increasing the aeration volume, providing sufficient gas for aerobic microorganisms to decompose sulfur compounds in the sewage, maintaining the activity of aerobic microorganisms, promoting their oxidation and decomposition of sulfides, and converting sulfides into harmless substances. The gas discharged from the aeration holes 47 and the bubbles will drive the suspended matter in the sewage to move during the rising process, preventing the suspended matter from settling in the sewage treatment tank, maintaining the uniform state of the sewage, facilitating sewage treatment, accelerating the reaction speed, and improving the treatment efficiency.

[0034] The use steps of the present invention are as follows: when the microbial electrochemical coupled desulfurization device is in use, when the treated sulfur-containing wastewater is aerobic treated, the aerator 45 works to allow gas to enter the serpentine tube 46 from the air inlet pipe 44, and the gas is then discharged from the aeration holes 47 on the surface of the serpentine tube 46, thereby increasing the aeration volume, providing sufficient gas for aerobic microorganisms to decompose sulfur-containing compounds in the wastewater, maintaining the activity of aerobic microorganisms, promoting their oxidative decomposition of sulfides, and converting sulfides into harmless substances. The gas discharged from the aeration holes 47 and the bubbles will drive the suspended matter in the wastewater to move together during the rising process, thereby preventing the suspended matter from settling in the wastewater treatment tank, maintaining the uniform state of the wastewater, facilitating the wastewater treatment, accelerating the reaction speed, and improving the treatment efficiency.

[0035] A microbial electrochemical coupled desulfurization method, the steps of which are as follows: S1: The sulfur-containing wastewater enters the flotation device 2 through the water inlet pipe 34. The flotation device 2 is provided with a conventional flotation machine and a scraper in the prior art. Subsequently, the suspended matter and oil pollutants in the wastewater are effectively removed by the flotation machine and the scraper. The floating oil and floating scum are discharged from the scum discharge pipe 33, and the sediment is discharged from the mud discharge pipe 35. After the flotation device 2 has processed the floating oil and floating scum in the sulfur-containing wastewater, the first pump 38 is operated to transport the sulfur-containing wastewater to the inside of the desulfurization device body 3 through the first pump 38; S2: The battery 30 supplies power to the anode assembly 4. The electricity-producing microorganisms in the anode assembly 4 use the organic matter in the sewage as electron donors to undergo an oxidation reaction, converting the chemical energy in the organic matter in the sewage into electrical energy and protons. The electrons are transferred to the cathode assembly 5 through an external circuit, and the protons migrate from the anode assembly 4 to the cathode assembly 5. In the cathode assembly 5, the electrons, protons and oxygen undergo a reduction reaction to generate water, thereby forming an electric current. When the anode assembly 4 and the cathode assembly 5 treat the sulfur-containing sewage for a long time, the motor 27 is rotating and driving the screw 25 to rotate, so that the connecting plate 6 moves upward and drives the two sliding disks 10 to move upward on the surfaces of the anode assembly 4 and the cathode assembly 5. During the movement of the two sliding disks 10, the cleaning rings 13 scrape the surfaces of the multiple conductive columns 9; S3: while the motor 27 is working, microbial slurry is added into the hollow threaded tube 14, the connecting plate 6 moves upward and also moves the evenly distributed plate 16, the rotating shaft 17, the hollow rotating rod 15 and the threaded ring 22 upward, the threaded ring 22 is threadedly connected to the hollow threaded tube 14, at this time the hollow rotating rod 15 rotates upward on the surface of the hollow threaded tube 14, at this time the microbial slurry in the hollow threaded tube 14 will fall into the evenly distributed plate 16, the evenly distributed plate 16 rotates upward following the hollow rotating rod 15, so that the slurry in the evenly distributed plate 16 rotates upward through the slot 23 to be evenly distributed; S4: The aerator 45 works, and the gas enters the serpentine tube 46 from the air inlet pipe 44. The gas is then discharged from the aeration holes 47 on the surface of the serpentine tube 46, increasing the aeration volume, providing sufficient gas for aerobic microorganisms to decompose sulfur compounds in the sewage, maintaining the activity of aerobic microorganisms, promoting their oxidation and decomposition of sulfides, and converting sulfides into harmless substances. The gas discharged from the aeration holes 47 and the bubbles will drive the suspended matter in the sewage to move during the rising process, preventing the suspended matter from settling in the sewage treatment tank, maintaining the uniform state of the sewage, facilitating sewage treatment, accelerating the reaction speed, and improving the treatment efficiency.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A microbial electrochemical coupled desulfurization device, comprising a base (1) and an air flotation device (2), a desulfurization device body (3) and an aerobic device (48) fixedly mounted on the surface of the base in sequence, characterized in that: An anode assembly (4) and a cathode assembly (5) are correspondingly fixedly installed inside the desulfurization device body (3); sliding plates (10) are slidably connected to the surfaces of the anode assembly (4) and the cathode assembly (5); a connecting plate (6) is fixedly connected between the two sliding plates (10); a hollow threaded pipe (14) for unloading is fixedly installed on the top surface of the interior of the desulfurization device body (3); a hollow rotating rod (15) that can rotate up and down is arranged on the surface of the hollow threaded pipe (14); a uniform distribution plate (16) connected to the hollow rotating rod (15) is fixedly installed on the bottom surface of the hollow rotating rod (15); a rotating shaft (17) is arranged between the uniform distribution plate (16) and the connecting plate (6); and the uniform distribution plate (16) is rotatably connected to the connecting plate (6) via the rotating shaft (17); The anode assembly (4) and the cathode assembly (5) both include a conductive disk (7), an insulating rod (8) is fixedly installed in the middle of the bottom surface of the two conductive disks (7), a plurality of conductive pillars (9) are arranged in a circular array on the bottom surface of the two conductive disks (7), the plurality of conductive pillars (9) are electrically connected to the conductive disk (7), an insert disk (11) is inserted into one end surface of the plurality of conductive pillars (9), the surfaces of the two sliding disks (10) are provided with through-type slots (12) of the same number as the conductive pillars (9), and a cleaning ring (13) for cleaning the surface of the conductive pillars (9) is fixedly installed inside any of the slots (12).

2. A microbial electrochemical coupled desulfurization device according to claim 1, characterized in that: The surfaces of the two conductive disks (7) are insulated, and the plurality of conductive columns (9) are arranged around the circumference of the insulating rod (8). Mounting frames (18) are fixedly mounted on the surfaces of the two conductive disks (7), and the anode assembly (4) and the cathode assembly (5) are respectively fixedly mounted inside the desulfurization device body (3) via the two mounting frames (18).

3. The microbial electrochemical coupled desulfurization device according to claim 1, characterized in that: The end surfaces of the two insulating rods (8) are both provided with threads (19); after the insulating rods (8) are plugged into the plug-in disc (11), one end of the insulating rod (8) extends to one side of the plug-in disc (11); a nut (20) threadedly connected to the thread (19) is provided below the plug-in disc (11); a plurality of mounting rings (21) are fixedly mounted on the surface of the sliding disc (10); and the mounting rings (21) are fixedly connected to the surface of the sliding disc (10) by screws.

4. The microbial electrochemical coupled desulfurization device according to claim 1, characterized in that: A threaded ring (22) matching the hollow threaded tube (14) is fixedly mounted on the top surface of the hollow rotating rod (15); the hollow rotating rod (15) is threadedly connected to the hollow threaded tube (14) via the threaded ring (22); the hollow threaded tube (14), the hollow rotating rod (15) and the evenly distributed plate (16) are in communication; a plurality of grooves (23) in communication with the evenly distributed plate (16) are formed on the surface of the evenly distributed plate (16); and an arc-shaped slope (24) is fixedly connected to the inner bottom surface of the evenly distributed plate (16).

5. The microbial electrochemical coupled desulfurization device according to claim 1, characterized in that: A screw rod (25) is rotatably connected to the inner top surface of the desulfurization device body (3); a threaded hole (26) matching the screw rod (25) is provided on the surface of the connection plate (6); the screw rod (25) is threadedly connected to the connection plate (6) through the threaded hole (26); a motor (27) is fixedly mounted on the top surface of the desulfurization device body (3); the output end of the motor (27) is fixedly connected to the screw rod (25); an insulating tube (28) for protecting the circuit is fixedly mounted on the top surfaces of the anode assembly (4) and the cathode assembly (5); the insulating tube (28) is fixedly connected to the surface of the conductive disk (7).

6. The microbial electrochemical coupled desulfurization device according to claim 5, characterized in that: A battery box (29) is fixedly mounted on the top surface of the desulfurization device body (3), a storage battery (30) is fixedly mounted inside the battery box (29), and the storage battery (30) is electrically connected to the conductive disk (7) via a wire; a bracket (31) is fixedly mounted on the side surface of the desulfurization device body (3), a photovoltaic panel (32) is fixedly mounted on the top surface of the bracket (31), and the photovoltaic panel (32) is electrically connected to the storage battery (30).

7. The microbial electrochemical coupled desulfurization device according to claim 1, characterized in that: A slag discharge pipe (33) and a water inlet pipe (34) in communication with the air flotation device (2) are fixedly mounted on the surface thereof; a mud discharge pipe (35) in communication with the air flotation device (2) is fixedly mounted on the bottom surface thereof; a connecting pipe (36) is fixedly connected between the air flotation device (2) and the desulfurization device body (3); a connecting pipe (37) is fixedly connected between the desulfurization device body (3) and the aerobic device (48); a first pump (38) for conveying sewage is fixedly mounted on the surface of the connecting pipe (36); a second pump (39) for conveying sewage is fixedly mounted on the surface of the connecting pipe (37); and a discharge pipe (40) in communication with the air flotation device (2) is fixedly mounted on the surface thereof.

8. The microbial electrochemical coupled desulfurization device according to claim 1, characterized in that: A feeding pipe (41) connected to the hollow threaded pipe (14) is fixedly mounted on the top surface of the desulfurization device body (3), and a feed pipe (42) is fixedly mounted on the top surface of the aerobic device (48).

9. The microbial electrochemical coupled desulfurization device according to claim 1, characterized in that: An aerator (45) is fixedly mounted on the surface of the aerobic device (48); an air inlet pipe (44) is fixedly mounted on the air inlet of the aerator (45); a serpentine pipe (46) is fixedly mounted on the inner bottom surface of the aerobic device (48); the serpentine pipe (46) is connected to the air outlet of the aerator (45); a plurality of aeration holes (47) are formed on the surface of the serpentine pipe (46); and a fixing seat (43) for supporting the aerator (45) is fixedly mounted on the surface of the aerobic device (48).

10. A microbial electrochemical coupled desulfurization method, referring to the microbial electrochemical coupled desulfurization device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: The sulfur-containing wastewater enters the flotation device (2) through the water inlet pipe (34). The flotation device (2) is provided with a conventional flotation machine and a scraper in the prior art. Subsequently, the suspended matter and oil pollutants in the wastewater are effectively removed under the action of the flotation machine and the scraper. The floating oil and floating scum are discharged from the scum discharge pipe (33), and the sediment is discharged from the mud discharge pipe (35). After the flotation device (2) has finished processing the floating oil and floating scum in the sulfur-containing wastewater, the first pump (38) operates to transport the sulfur-containing wastewater through the first pump (38) to the inside of the desulfurization device body (3); S2: The storage battery (30) supplies power to the anode assembly (4). The electricity-producing microorganisms in the anode assembly (4) use the organic matter in the sewage as electron donors to generate an oxidation reaction, converting the chemical energy in the organic matter in the sewage into electrical energy and protons. The electrons are transferred to the cathode assembly (5) through an external circuit. The protons migrate from the anode assembly (4) to the cathode assembly (5). In the cathode assembly (5), the electrons, protons and oxygen undergo a reduction reaction to generate water, thereby generating an electric current. When the anode assembly (4) and the cathode assembly (5) treat the sulfur-containing sewage for a long time, the motor (27) is rotating and driving the screw (25) to rotate, so that the connecting plate (6) moves upward and drives the two sliding disks (10) to move upward on the surfaces of the anode assembly (4) and the cathode assembly (5). During the movement of the two sliding disks (10), the cleaning rings (13) are used to scrape the surfaces of the multiple conductive columns (9); S3: while the motor (27) is working, microbial slurry is added into the hollow threaded tube (14), the connecting plate (6) moves upward, and also moves the evenly distributed plate (16), the rotating shaft (17), the hollow rotating rod (15) and the threaded ring (22) upward, the threaded ring (22) is threadedly connected to the hollow threaded tube (14), and at this time, the hollow rotating rod (15) rotates upward on the surface of the hollow threaded tube (14), and at this time, the microbial slurry in the hollow threaded tube (14) falls into the evenly distributed plate (16), and the evenly distributed plate (16) rotates upward following the hollow rotating rod (15), so that the slurry in the evenly distributed plate (16) is evenly distributed through the slot (23) by rotating upward; S4: The aerator (45) works to draw gas from the air inlet pipe (44) into the serpentine tube (46), and the gas is discharged from the aeration holes (47) on the surface of the serpentine tube (46), thereby increasing the aeration volume and providing sufficient gas for aerobic microorganisms to decompose the sulfur compounds in the sewage, thereby maintaining the activity of the aerobic microorganisms and promoting their oxidation and decomposition of sulfides, thereby converting sulfides into harmless substances. The gas discharged from the aeration holes (47) and the bubbles will drive the suspended matter in the sewage to move together during the rising process, thereby preventing the suspended matter from settling in the sewage treatment tank, maintaining the uniform state of the sewage, facilitating the sewage treatment, accelerating the reaction speed, and improving the treatment efficiency.

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