A microbial electrochemical coupled desulfurization device and method

Abstract

The present invention discloses a microbial electrochemical coupled desulfurization device and method, which belongs to the technical field of microbial electrochemical wastewater treatment. A microbial electrochemical coupled desulfurization device includes a base and a flotation device, a desulfurization device body and an aerobic device fixedly installed on its surface in sequence. The interior of the desulfurization device body is fixedly installed with an anode assembly and a cathode assembly, and the surfaces of the anode assembly and the cathode assembly are both slidably connected with a sliding disk. Compared with traditional anode and cathode plates, the microbial electrochemical coupled desulfurization device can increase the contact area between the conductive columns and the sulfur-containing wastewater 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, and 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.

Description

Technical Field

[0001] The present invention relates to the technical field of microbial electrochemical sewage treatment, and more particularly 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 metabolic effects 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, relating to the field of microbial electrochemical water treatment technology. The device comprises a flotation unit, a desulfurization unit, and an aerobic unit. The flotation unit removes suspended solids and oil pollutants from the wastewater. Microorganisms in the desulfurization and aerobic units reduce sulfates, thiosulfates, and sulfites in the sulfur-containing wastewater to sulfides, while simultaneously degrading organic matter in the wastewater and converting chemical energy into electrical energy to power the electrical equipment in the desulfurization unit.

[0004] The above technical solution can effectively reduce the energy consumption and operating costs of sulfur-containing wastewater treatment while meeting the discharge standards of petrochemical wastewater. The microbial electrochemical coupled desulfurization devices currently on the market still have some shortcomings. For example, the anode plates and cathode plates 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 reduction 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 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:

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A microbial electrochemical coupled desulfurization device comprises a base and an air flotation device, a desulfurization device body and an aerobic device fixedly mounted on the surface thereof in sequence. An anode assembly and a cathode assembly are fixedly mounted correspondingly inside the desulfurization device body. The surfaces of the anode assembly and the cathode assembly are both slidably connected with a sliding disk. A connecting plate is fixedly connected between the two sliding disks. A hollow threaded pipe for unloading is fixedly mounted on the top surface of the inner part of the desulfurization device body. A hollow rotating rod that can rotate up and down is provided on the surface of the hollow rotating rod. A uniform sprinkler connected to the bottom surface of the hollow rotating rod is fixedly mounted. A rotating shaft is provided 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 conductive plates, and an insulating rod is fixedly installed in the middle of the bottom surface of the two conductive plates. The bottom surfaces of the two conductive plates are provided with a plurality of conductive posts in a circumferential array, and the plurality of conductive posts are electrically connected to the conductive plates. An inserting plate is plugged into the surface of one end of the plurality of conductive posts, and the surfaces of the two sliding plates are provided with through-type slots with the same number as the conductive posts, and a cleaning ring for cleaning the surface of the conductive posts is fixedly installed inside any of the slots.

[0008] By adopting the above technical solution, 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, and 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; when microbial slurry is added to the hollow threaded tube, the upward movement of the connecting plate also moves the evenly distributing 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 distributing plate follows the upward rotation of the hollow rotating rod to evenly distribute the slurry; compared with the traditional feeding method, the evenly distributing plate follows the upward rotation of the hollow rotating rod to evenly distribute the slurry, thereby 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.

[0009] 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.

[0010] 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.

[0011] Preferably, the end surfaces of the two insulating rods are provided with threaded wires. 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 threaded wire 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.

[0012] 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 slots connected thereto are provided on the surface of the evenly distributed distribution plate, and an arc-shaped slope is fixedly connected to the inner bottom surface of the evenly distributed distribution plate.

[0013] 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.

[0014] Preferably, the inner top surface of the desulfurization device body is rotatably connected to a screw rod, and the surface of the connecting plate is provided with a threaded hole matching the screw rod, and the screw rod 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, and the output end of the motor is fixedly connected to the screw rod. The top surfaces of the anode assembly and the cathode assembly are both fixedly installed with insulating tubes for protecting the circuits, and the insulating tubes are fixedly connected to the surface of the conductive disk.

[0015] 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.

[0016] Preferably, a slag discharge pipe and a water inlet pipe connected thereto are fixedly installed on the surface of the flotation device, a mud discharge pipe connected thereto is fixedly installed on the bottom surface of the flotation device, 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 thereto is fixedly installed on the surface of the flotation device.

[0017] 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.

[0018] 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 tube is fixedly mounted on the inner bottom surface of the aerobic device, the serpentine tube is connected to the air outlet of the aerator, a plurality of aeration holes are opened on the surface of the serpentine tube, and a fixing base for supporting the aerator is fixedly mounted on the surface of the aerobic device.

[0019] By adopting the above technical solution, the aerator works, and the gas enters 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, thereby increasing the aeration volume, providing sufficient gas for aerobic microorganisms to decompose sulfur compounds in the sewage, maintaining the activity of aerobic microorganisms, and promoting their oxidation and decomposition of sulfides, so that sulfides are converted 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, and facilitating sewage treatment, accelerating the reaction speed, and improving the treatment efficiency.

[0020] A microbial electrochemical coupled desulfurization method, the steps of which are as follows:

[0021] S1: The sulfur-containing wastewater enters the flotation device through the water inlet pipe. The flotation device is equipped with a conventional flotation machine and a scraper in the prior art. Subsequently, the flotation machine and the scraper effectively remove suspended solids and oil pollutants in the wastewater. Floating oil and scum are discharged from the scum discharge pipe, and sediment is discharged from the mud discharge pipe. After the flotation device completes the treatment of the floating oil and scum in the sulfur-containing wastewater, the first pump is operated to transport the sulfur-containing wastewater into the desulfurization device body through the first pump;

[0022] S2: The battery supplies power to the anode assembly. The electrogenic microorganisms in the anode assembly use the organic matter in the sewage as electron donors to generate 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 sulfur-containing sewage for a long time, the motor rotates forward, driving the screw to rotate, causing the connecting plate to move upward, 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 scrape the surfaces of multiple conductive columns.

[0023] S3: While the motor is working, microbial slurry is added to the hollow threaded tube. The connecting 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, so that the slurry in the evenly distributed plate is evenly distributed upward through the slotted rotation;

[0024] S4: The aerator works, and the gas enters the serpentine tube from the air inlet pipe. 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, and promoting their oxidation and decomposition of sulfides, so that sulfides are converted into harmless substances. The gas discharged from the aeration holes and the bubbles will move together in the rising process, preventing the suspended matter in the sewage from settling in the sewage treatment tank, keeping the sewage in a uniform state, facilitating sewage treatment, accelerating the reaction speed, and improving treatment efficiency.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1) When in use, compared with traditional anode and cathode plates, the microbial electrochemical coupled desulfurization device can increase the contact area between the conductive columns and the sulfur-containing wastewater 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.

[0027] 2) When the microbial electrochemical coupled desulfurization device is in use, microbial slurry is added to the hollow threaded pipe, and the connecting plate moves upward, also carrying 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 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.

[0028] 3) When the microbial electrochemical coupled desulfurization device is in use, the aerator works, and the gas enters 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, and promoting their oxidation and decomposition of sulfides, so that sulfides are converted into harmless substances. The gas discharged from the aeration holes and the bubbles will move together in the rising process, preventing the suspended matter in the sewage from settling in the sewage treatment tank, maintaining the uniform state of the sewage, and facilitating sewage treatment, accelerating the reaction speed, and improving treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 This is a schematic diagram of the position structure of the flotation device, desulfurization device and aerobic device of the present invention;

[0031] Figure 3 This is a schematic diagram of the position structure of the desulfurization device and the aerobic device of the present invention;

[0032] Figure 4 This is a schematic structural diagram of the desulfurization device of the present invention;

[0033] Figure 5 This is a schematic diagram of the internal analysis of the desulfurization device of the present invention;

[0034] Figure 6 This is a schematic diagram of the overall position structure of the anode and cathode of the present invention;

[0035] Figure 7 This is an exploded schematic diagram of the overall structure of the anode of the present invention;

[0036] Figure 8 It is a schematic diagram of the sliding disk structure of the present invention;

[0037] Figure 9 It is a cross-sectional view of the hollow threaded tube and the hollow rotating rod of the present invention;

[0038] Figure 10 It is a schematic diagram of the serpentine tube structure of the present invention.

[0039] Explanation of the reference numerals in the figure: 1. Base; 2. Air flotation device; 3. Desulfurization device body; 4. Anode assembly; 5. Cathode assembly; 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. Sprinkling 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. 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. Fixing seat; 44. Air inlet pipe; 45. Aerator; 46. Serpentine pipe; 47. Aeration hole; 48. Aerobic device. DETAILED DESCRIPTION

[0040] Example 1: Please refer to Figure 1 - Figure 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 its surface in sequence. The air flotation device 2 is a conventional air flotation device 2 in the prior art. The air flotation device 2 is internally provided with an air flotation machine and a scraper conventional 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 fixedly mounted correspondingly inside the desulfurization device body 3. By making the anode and cathode plates 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 function of the connecting plate 6 is that 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 tube 14 for unloading is fixedly installed on the top surface of the inner part of the desulfurization device body 3. The function of the hollow threaded tube 14 is to make the hollow rotating rod 15 rotate upward on the surface of the hollow threaded tube 14. A hollow rotating rod 15 that can rotate up and down is provided on the surface of the hollow threaded tube 14. A uniform spreading plate 16 connected to it is fixedly installed on the bottom surface of the hollow rotating rod 15. The uniform 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 via the rotating shaft 17. The anode assembly 4 and the cathode assembly 5 both include a conductive plate 7. 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 provided with a plurality of conductive columns 9 in a circumferential array. The plurality of conductive columns 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 columns 9. The surfaces of the two sliding plates 10 are provided with the same number of through-type slots 12 as the number of conductive columns 9. A cleaning ring 13 for cleaning the surface of the conductive column 9 is fixedly installed inside any one of the slots 12. 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. The motor 27 rotates forward and reversely with the lead screw 25, so that the connecting plate 6 moves upward and drives the two sliding plates 10 to move upward on the surfaces 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 surfaces of the multiple conductive columns 9. Compared with 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 off the surface attachments of the multiple conductive columns 9, ensuring 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.When microbial slurry is added to the hollow threaded tube 14, the upward movement of the connecting plate 6 also moves the distribution 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 distribution plate 16 follows the upward rotation of the hollow rotating rod 15 to evenly distribute the slurry. Compared with traditional feeding methods, the distribution plate 16 follows the upward rotation of the hollow rotating rod 15 to evenly distribute the slurry, preventing slurry accumulation at the tube mouth. The reciprocating movement of the connecting plate 6 also allows the microbial slurry to be quickly integrated with the sulfur-containing wastewater, thereby improving the treatment speed and efficiency of the sulfur-containing wastewater.

[0041] The surfaces of the two conductive disks 7 are insulated, and multiple conductive columns 9 are arranged around the circumference of the insulating rod 8. The surfaces of the two conductive disks 7 are fixedly installed with mounting frames 18. The anode assembly 4 and the cathode assembly 5 are respectively fixedly installed inside the desulfurization device body 3 through two mounting frames 18. By making the anode and cathode plates into multiple cylindrical conductive columns 9, the contact area between the conductive columns 9 and the sulfur-containing wastewater can be increased.

[0042] The end surfaces of the two insulating rods 8 are both provided with threads 19. After the insulating rod 8 is plugged into the insert disk 11, one end of the insulating rod 8 extends to one side of the insert disk 11. A nut 20 threadedly connected to the thread 19 is provided under the insert 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.

[0043] 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 slots 23 connected thereto are provided on the surface of the evenly distributed distribution plate 16. An arc-shaped 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-shaped slope 24, when the microbial slurry acts on the surface of the arc-shaped slope 24, the evenly distributed distribution plate 16 rotates, making it easy to spill the microbial slurry.

[0044] The inner top surface of the desulfurization device body 3 is rotatably connected to a screw rod 25, and a threaded hole 26 matching the screw rod 25 is provided 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. The insulating tube 28 is fixedly connected to the surface of the conductive disk 7.

[0045] 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. 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. The photovoltaic panel 32 converts light energy into electrical energy and stores it in the battery 30.

[0046] A slag discharge pipe 33 and a water inlet pipe 34 communicating with the flotation device 2 are fixedly installed on the surface thereof, a mud discharge pipe 35 communicating with 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 communicating with 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.

[0047] A feeding pipe 41 connected to the hollow threaded pipe 14 is fixedly mounted on the top surface of the desulfurization device body 3. 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. The feeding pipe 42 is used to add the required microbial slurry.

[0048] The use steps of the present invention are as follows: when the microbial electrochemical coupled desulfurization device is in use, the sulfur-containing wastewater enters the flotation device 2 through the water inlet pipe 34. The flotation device 2 is equipped 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 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 completed the treatment of the floating oil and scum in the sulfur-containing wastewater, the first pump 38 is operated to transport the sulfur-containing wastewater through the first pump 38 to the inside of the desulfurization device body 3. At this time, the battery 30 supplies power to the anode assembly 4. The electrogenic microorganisms in the anode assembly 4 use the organic matter in the wastewater as an electron donor to generate an oxidation reaction, converting the chemical energy in the organic matter in the wastewater into The electrons are converted into electrical energy and protons, and the electrons are transferred 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, forming 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 surface 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 surface 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). When the motor 27 is working, microbial slurry is added to 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 follows the upward rotation of 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. 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 2 37, and the microbial slurry is added through the feed pipe 42, and then the desulfurized wastewater is re-treated by the aerobic device 48. The treated wastewater is then discharged through the discharge The discharge is carried out through the outlet pipe 40. This solution rotates the screw 25 in the forward and reverse rotation of the motor 27, so that the connecting plate 6 moves upward and drives the two sliding plates 10 to move upward on the surfaces 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 surfaces 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 off 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.When microbial slurry is added to the hollow threaded tube 14, the upward movement of the connecting plate 6 also moves the distribution 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 distribution plate 16 follows the upward rotation of the hollow rotating rod 15 to evenly distribute the slurry. Compared with traditional feeding methods, the distribution plate 16 follows the upward rotation of the hollow rotating rod 15 to evenly distribute the slurry, preventing slurry accumulation at the tube mouth. The reciprocating movement of the connecting plate 6 also allows the microbial slurry to be quickly integrated with the sulfur-containing wastewater, thereby improving the treatment speed and efficiency of the sulfur-containing wastewater.

[0049] Example 2: Please refer to Figure 1 - Figure 10 , combined with the basis of Example 1, the difference is that an aerator 45 is fixedly installed on the surface of the aerobic device 48, and 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 bottom surface of the inner part of the aerobic device 48, and 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 base 43 for supporting the aerator 45 is fixedly installed on the surface of the aerobic device 48. When the aerator 45 works, the gas enters the serpentine pipe 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, and promoting their oxidation and decomposition of sulfides, so that sulfides are converted into harmless substances. The gas discharged from the aeration holes 47 and the bubbles will move together with the suspended matter in the sewage 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 treatment efficiency.

[0050] The steps of using 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, and the gas enters 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, and promoting their oxidation and decomposition of sulfides, so that sulfides are converted 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, 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.

[0051] A microbial electrochemical coupled desulfurization method, the steps of which are as follows:

[0052] S1: The sulfur-containing wastewater enters the flotation device 2 through the water inlet pipe 34. The flotation device 2 is equipped with a conventional flotation machine and a scraper in the prior art. Subsequently, the flotation machine and the scraper effectively remove suspended solids and oil pollutants in the wastewater. Floating oil and scum are discharged through the scum discharge pipe 33, and sediment is discharged through the mud discharge pipe 35. After the flotation device 2 has processed the floating oil and scum in the sulfur-containing wastewater, the first pump 38 is operated to transport the sulfur-containing wastewater into the desulfurization device body 3 through the first pump 38.

[0053] S2: The battery 30 supplies power to the anode assembly 4. The electrogenic 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. 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, 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 rotates forward, driving the screw 25 to rotate, causing the connecting plate 6 to move upward, driving the two sliding discs 10 to move upward on the surfaces of the anode assembly 4 and the cathode assembly 5. During the movement of the two sliding discs 10, the cleaning rings 13 scrape the surfaces of the multiple conductive pillars 9.

[0054] S3: While the motor 27 is working, microbial slurry is added to 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 with the hollow rotating rod 15, so that the slurry in the evenly distributed plate 16 rotates upward through the slots 23 and is evenly distributed.

[0055] 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, and promoting their oxidation and decomposition of sulfides, converting sulfides into harmless substances. The gas discharged from the aeration holes 47 and the bubbles will move together in the process of rising, preventing the suspended matter in the sewage treatment tank from settling, maintaining the uniform state of the sewage, facilitating sewage treatment, accelerating the reaction speed, and improving treatment efficiency.

[0056] 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 to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended 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 base in sequence, characterized in that: An anode assembly (4) and a cathode assembly (5) are fixedly mounted correspondingly inside the desulfurization device body (3); a sliding plate (10) is 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 tube (14) for unloading is fixedly mounted 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 provided on the surface of the hollow threaded tube (14); a uniform distribution plate (16) in communication with the hollow rotating rod (15) is fixedly mounted on the bottom surface of the hollow rotating rod (15); a rotating shaft (17) is provided between the uniform distribution plate (16) and the connecting plate (6); the uniform distribution plate (16) is rotatably connected to the connecting plate (6) via the rotating shaft (17); The hollow threaded tube (14), the hollow rotating rod (15) and the evenly distributed plate (16) are connected. The surface of the evenly distributed plate (16) is provided with a plurality of slots (23) connected thereto. The inner bottom surface of the evenly distributed plate (16) is fixedly connected with an arc-shaped slope (24). The reciprocating motion of the connecting plate (6) can circulate the sulfur-containing wastewater near the anode assembly (4) and the cathode assembly (5). The reciprocating motion of the connecting plate (6) can also achieve rapid fusion of the microbial slurry and the sulfur-containing wastewater. The evenly spreading plate (16) follows the upward rotation motion of the hollow rotating rod (15) to evenly spread the slurry. 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), and a plurality of conductive columns (9) are arranged in a circumferential array on the bottom surface of the two conductive disks (7), and the plurality of conductive columns (9) are electrically connected to the conductive disk (7). An insert disk (11) is inserted into the surface of one end of the plurality of conductive columns (9), and the surfaces of the two sliding disks (10) are provided with the same number of through-type slots (12) as the number of the conductive columns (9), and a cleaning ring (13) for cleaning the surface of the conductive column (9) is fixedly installed inside any of the slots (12).

2. The microbial electrochemical coupled desulfurization device according to claim 1, characterized in that: The surfaces of the two conductive disks (7) are insulated, and a plurality of conductive columns (9) are arranged circumferentially around 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 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 installed 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), and the hollow rotating rod (15) is threadedly connected to the hollow threaded tube (14) via the threaded ring (22).

5. The microbial electrochemical coupled desulfurization device according to claim 1, characterized in that: The inner top surface of the desulfurization device body (3) is rotatably connected to a screw rod (25), the surface of the connecting plate (6) is provided with a threaded hole (26) matching the screw rod (25), the screw rod (25) is threadedly connected to the connecting 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), the top surfaces of the anode assembly (4) and the cathode assembly (5) are both fixedly mounted with an insulating tube (28) for protecting the circuit, and 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 battery (30) is fixedly mounted inside the battery box (29), and the 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), and 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 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 flotation device (2) are fixedly installed on the surface thereof; a mud discharge pipe (35) in communication with the flotation device (2) is fixedly installed on the bottom surface thereof; a connecting pipe (36) is fixedly connected between the 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 installed on the surface of the connecting pipe (36); a second pump (39) for conveying sewage is fixedly installed on the surface of the connecting pipe (37); and a discharge pipe (40) in communication with the flotation device (2) is fixedly installed on the surface thereof.

8. The microbial electrochemical coupled desulfurization device according to claim 1, characterized in that: A feeding pipe (41) communicating with the hollow threaded pipe (14) is fixedly mounted on the top surface of the desulfurization device body (3), and a feeding 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 tube (46) is fixedly mounted on the inner bottom surface of the aerobic device (48), the serpentine tube (46) is communicated with the air outlet of the aerator (45), a plurality of aeration holes (47) are opened on the surface of the serpentine tube (46), and a fixing base (43) for supporting the aerator (45) is fixedly mounted on the surface of the aerobic device (48).

10. A microbial electrochemical coupled desulfurization method, comprising 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 an air flotation machine and a scraper. Subsequently, the suspended solids and oil pollutants in the wastewater are effectively removed by the air 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) completes the treatment of the floating oil and floating scum in the sulfur-containing wastewater, the first pump (38) works to transport the sulfur-containing wastewater to the interior of the desulfurization device body (3) through the first pump (38); S2: The battery (30) supplies power to the anode assembly (4). The electrogenic microorganisms in the anode assembly (4) utilize 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 electrons and protons. The electrons are transferred 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, 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) rotates forward, driving the screw (25) to rotate, causing the connecting plate (6) to move upward, driving the two sliding discs (10) to move upward on the surfaces of the anode assembly (4) and the cathode assembly (5). During the movement of the two sliding discs (10), the cleaning ring (13) scrapes 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), and the evenly distributed plate (16) rotates upward along with the hollow rotating rod (15), thereby causing the slurry in the evenly distributed plate (16) to be evenly distributed through the slot (23). 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), thereby increasing the aeration volume and providing sufficient gas for aerobic microorganisms to decompose the sulfur compounds in the sewage. This maintains the activity of aerobic microorganisms and promotes their oxidation and decomposition of sulfides, thereby converting sulfides into harmless substances. The gas and bubbles discharged from the aeration holes (47) will move the suspended matter in the sewage together during the rising process, thereby preventing the suspended matter from settling in the sewage treatment tank and maintaining the sewage in a uniform state. This is beneficial to the sewage treatment process, accelerates the reaction speed, and improves the treatment efficiency.

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