Wastewater treatment device and process based on sulfur circulation

Abstract

The invention relates to the technical field of wastewater treatment, and discloses a wastewater treatment device and process based on sulfur circulation, and the wastewater treatment device comprises a treatment box, a reduction box and a treatment concentration mechanism; a storage box is fixedly mounted at the top of the treatment box; a bottom cover is movably connected to the bottom of the treatment box through a thread structure; by arranging the treatment concentration mechanism, after wastewater treatment in the treatment box is completed, a first electric push rod moves to drive a moving plate to move, so that a threaded part on one side of the moving plate is matched with the side wall of a threaded rod, and the threaded rod can drive the moving part to move in the treatment box in the rotating process; the movable part moves downwards in the treatment box, liquid flows to the top of the movable part through the screen, and heavy metal impurities at the separation position in the liquid are isolated at the bottom of the movable part and are finally compressed at the bottom of the treatment box, so that the impurities floating in the treated liquid are greatly reduced, and the impurities at the separation position are easier to treat in a centralized manner; and the wastewater treatment effect is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, and specifically to a wastewater treatment device and process based on the sulfur cycle. Background Technique

[0002] Wastewater treatment is to use physical, chemical, and biological methods to treat wastewater, purify the wastewater, reduce pollution, so as to achieve wastewater recycling and reuse, make full use of water resources. Heavy metal wastewater mainly comes from wastewater discharged by enterprises such as mines, smelters, electrolyzers, electroplaters, pesticides, pharmaceuticals, paints, and pigments. If heavy metal wastewater is not treated, it will seriously pollute the environment. The types, contents, and existing forms of heavy metals in wastewater treatment vary with different production enterprises. Removing heavy metals in wastewater treatment is very important. The wastewater treatment device based on the sulfur cycle is a technology that uses sulfides (such as sulfates, thiosulfates) and the metabolic activities of sulfur-oxidizing / reducing microorganisms to remove pollutants, and is especially suitable for treating wastewater containing nitrogen, heavy metals, or organic matter.

[0003] Traditional wastewater treatment devices consume too many resources when treating wastewater containing nitrogen, heavy metals, or organic matter and cannot be recycled. In order to achieve the synchronous removal of nitrogen, heavy metals, and organic matter and the recycling of sulfur resources, a wastewater treatment device based on the sulfur cycle is proposed. Summary of the Invention

[0004] The purpose of the present invention is to provide a wastewater treatment device and process based on the sulfur cycle to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A wastewater treatment device based on the sulfur cycle, comprising:

[0007] A treatment tank and a reduction tank, a storage tank is fixedly installed on the top of the treatment tank, and the bottom of the treatment tank is movably connected with a bottom cover through a threaded structure;

[0008] A treatment concentration mechanism, which is arranged inside the treatment tank. The treatment concentration mechanism moves inside the treatment tank through a movable part, and concentrates the heavy metal impurities generated after treatment at the bottom of the treatment tank to prevent the impurities from floating inside the treatment tank;

[0009] A reduction and conveying mechanism, which is arranged between the reduction tank and the storage tank. The reduction and conveying mechanism conveys the reduced elemental sulfur to the storage tank through a first conveying pipe and a second conveying pipe;

[0010] An environmental control mechanism is provided on the top of the processing tank. The environmental control mechanism discharges oxygen in the processing tank by injecting nitrogen into the inside of the processing tank, so as to form an anaerobic environment inside the processing tank. The environmental control mechanism forms an oxygen-rich environment inside the reduction tank by injecting oxygen into the reduction tank.

[0011] Optionally, the processing concentration mechanism includes a limit block, a screen, a buoyancy member, a first electric push rod, a moving plate, and a threaded rod. The limit block is fixedly installed on the side wall of the movable member. A limit groove is formed on the inner wall of the processing tank. The limit block is slidably connected inside the limit groove. The movable member is slidably connected inside the processing tank through the limit block. The threaded rod is rotatably connected inside the processing tank. An installation hole matching the threaded rod is formed inside the movable member. An installation cavity is formed on the inner wall of the installation hole. The first electric push rod is fixedly installed on the inner wall of the installation cavity. The moving plate is fixedly installed at the output end of the first electric push rod. A threaded member is fixedly installed on one side of the moving plate. The threaded member is engaged with the threaded rod. The movable member is movably connected to the threaded rod through the threaded member. The buoyancy member is fixedly installed at the bottom of the movable member. The screen is fixedly installed inside the movable member.

[0012] Optionally, a first servo motor is fixedly installed on the top of the processing tank. A gear shaft is fixedly installed at the output end of the first servo motor. A toothed ring is fixedly installed on the side wall of the threaded rod. The gear shaft is engaged with the toothed ring.

[0013] Optionally, a stirring member is fixedly installed on the side wall of the threaded rod. There are several stirring members. Fixed rings are fixedly installed on the side walls of several stirring members. The fixed rings are in contact with the inner wall of the processing tank.

[0014] Optionally, a flow-through groove is formed inside the threaded rod. A through hole is formed on one side of the flow-through groove close to the bottom. The through hole penetrates the threaded rod.

[0015] Optionally, the environmental control mechanism includes a first air pipe, a second air pipe, a second electric push rod, and a baffle. The first air pipe is fixedly installed inside the reduction tank. Several air outlet holes are formed on one side of the first air pipe. The second air pipe is fixedly installed inside the storage tank. One end of the second air pipe is communicated with the flow-through groove. The second electric push rod is fixedly installed on the inner wall of the second air pipe. The baffle is fixedly installed at the output end of the second electric push rod. The baffle is engaged with the second air pipe. A transmission device is fixedly installed on one side of the storage tank. A grinding roller is fixedly installed at the connection end of the transmission device.

[0016] Optionally, the environmental control mechanism further includes an exhaust pipe, a fourth servo motor, a movable rod, a limiting rod, a pressing plate, a mounting shaft, and a valve flap. The exhaust pipe is fixedly installed on the top of the treatment tank and is in communication with the treatment tank. The mounting shaft is fixedly installed inside the exhaust pipe. The valve flap is rotatably connected to the side wall of the mounting shaft through a torsion spring. The limiting rod is fixedly installed on the inner wall of the exhaust pipe. The pressing plate is slidably connected to the side wall of the limiting rod. The movable rod is installed inside the exhaust pipe. The fourth servo motor is fixedly installed on the side wall of the exhaust pipe. The movable rod is fixedly installed at the output end of the fourth servo motor. The movable rod is rotatably connected to the inside of the exhaust pipe through the fourth servo motor. The movable rod is located inside the pressing plate. The top of the valve flap is provided with an inclined surface.

[0017] Optionally, a liquid inlet pipe is fixedly installed inside the treatment tank. One end of the liquid inlet pipe is fixedly installed with a first corrugated expansion pipe. One end of the first corrugated expansion pipe is fixedly installed inside the movable member. One end of the first corrugated expansion pipe is located at the bottom of the movable member. A fixing hole is formed inside the movable member. A filter screen is fixedly installed inside the fixing hole. A transfer pump is fixedly installed on the top of the reduction tank. The input end of the transfer pump is fixedly installed with a connecting pipe. The other end of the connecting pipe is fixedly installed inside the treatment tank. The other end of the connecting pipe is installed with a second corrugated expansion pipe. One end of the second corrugated expansion pipe is located at the top of the fixing hole. A first mounting seat is fixedly installed on the top of the movable member. A fixing frame is fixedly installed on the side wall of the second corrugated expansion pipe. A second mounting seat is fixedly installed on the side wall of the fixing frame. A connecting rod is rotatably connected inside the first mounting seat. The other end of the connecting rod is movably connected inside the second mounting seat.

[0018] Optionally, the reduction and transfer mechanism includes a second servo motor, a transfer rod, a third servo motor, a communicating pipe, a rotating shaft, a spiral filter element, a drain pipe, and a feed pipe. The first transfer pipe is fixedly installed at the bottom of the reduction tank. The second servo motor is fixedly installed at one end of the first transfer pipe. The transfer rod is rotatably connected inside the first transfer pipe. One end of the transfer rod is fixedly installed at the output end of the second servo motor. The third servo motor is fixedly installed on the top of the second transfer pipe. The rotating shaft is fixedly installed at the output end of the third servo motor. The rotating shaft is rotatably connected inside the second transfer pipe through the third servo motor. The spiral filter element is fixedly installed on the side wall of the rotating shaft. The drain pipe is fixedly installed at the bottom of the second transfer pipe. The communicating pipe is fixedly installed on the top of the second transfer pipe. The feed pipe is fixedly installed on the top of the storage tank. One end of the communicating pipe is in communication with the feed pipe.

[0019] A wastewater treatment process based on sulfur cycle specifically includes the following steps:

[0020] S1: When in use, the wastewater to be treated is poured in through the liquid inlet pipe. The wastewater flows to the bottom of the movable part through the liquid inlet pipe and the first corrugated telescopic pipe. Then, nitrogen is conveyed into the flow-through tank through the second air pipe, creating an anaerobic environment inside the treatment tank to ensure the reaction between elemental sulfur and the wastewater. During the nitrogen conveyance, the air circulation inside the second air pipe drives the elemental sulfur powder particles inside the storage tank to flow into the flow-through tank together, and then they are blown out through the through-holes inside the flow-through tank into the liquid inside the treatment tank, enabling the elemental sulfur powder particles inside the storage tank to better mix with the wastewater inside the treatment tank;

[0021] S2: After the treatment is completed, the first servo motor can be used to control the rotation of the gear shaft. The rotation of the gear shaft can drive the gear ring and the threaded rod to rotate. Thus, the rotation of the threaded rod can be controlled by the first servo motor. The movement of the first electric push rod drives the moving plate to move, making the threaded part on one side of the moving plate fit with the side wall of the threaded rod. During the rotation of the threaded rod, the movable part can be driven to move inside the treatment tank. As the movable part moves downward inside the treatment tank, the liquid flows through the sieve to the top of the movable part. The heavy metal impurities separated from the liquid are isolated at the bottom of the movable part and finally compressed at the bottom of the treatment tank;

[0022] During this process, the transfer pump can pump the treated water inside the treatment tank into the reduction tank through the connecting pipe. The second corrugated telescopic pipe can ensure that the connecting pipe can always be connected to it during the movement of the movable part. The connecting rod enables one end of the second corrugated telescopic pipe to maintain the distance from the fixed hole during the movement of the movable part, so that when the connecting pipe extracts the liquid inside the treatment tank through the second corrugated telescopic pipe, the sediment will not be sucked in;

[0023] S3: By setting the first air pipe, oxygen can be conveyed into the reduction tank, creating an oxygen-rich environment inside the reduction tank, so that H₂S in the treated liquid is oxidized to elemental sulfur. By the rotation of the conveying rod, the liquid inside the first conveying pipe can be conveyed, and the liquid is conveyed through the first conveying pipe to the second conveying pipe. By setting the third servo motor, it can be used to control the rotation of the rotating shaft. The rotation of the rotating shaft can drive the spiral filter element to rotate, enabling the elemental sulfur formed during the reduction inside the reduction tank and during the conveyance inside the first conveying pipe to be conveyed through the spiral filter element. The filtered water can fall downward through the spiral filter element into the drain pipe and be discharged. Then, through the connecting pipe and the feed pipe, the elemental sulfur conveyed by the spiral filter element can return to the storage tank again through the connecting pipe and the feed pipe, realizing the recycling of elemental sulfur.

[0024] The present invention has at least the following beneficial effects:

[0025] (1) In this solution, by setting up a processing centralized mechanism, after the wastewater treatment in the treatment tank is completed, the first electric push rod drives the moving plate to move, so that the threaded part on one side of the moving plate fits with the side wall of the threaded rod. When the threaded rod rotates, it can drive the movable part to move inside the treatment tank. As the movable part moves downward inside the treatment tank, the liquid flows through the screen to the top of the movable part, and the heavy metal impurities separated from the liquid are isolated at the bottom of the movable part and finally compressed at the bottom of the treatment tank. Thus, the impurities floating in the treated liquid are greatly reduced, making the separated impurities easier to be centrally processed and ensuring the efficiency of wastewater treatment;

[0026] (2) In this solution, the second servo motor is set to control the rotation of the conveying rod. By the rotation of the conveying rod, the liquid inside the first conveying pipe can be conveyed, and the liquid is conveyed through the first conveying pipe to the second conveying pipe. By setting the third servo motor to control the rotation of the rotating shaft, the rotating shaft rotation can drive the spiral filter element to rotate, so that the elemental sulfur formed during the reduction inside the reduction tank and during the conveying inside the first conveying pipe can be conveyed through the spiral filter element, and the filtered water can fall downward through the spiral filter element into the drain pipe and be discharged. Then, through the connecting pipe and the feeding pipe, the elemental sulfur conveyed by the spiral filter element can return to the storage tank again through the connecting pipe and the feeding pipe, realizing the recycling of elemental sulfur;

[0027] (3) In this solution, the first gas pipeline is set to convey oxygen into the reduction tank, so as to form an oxygen-rich environment inside the reduction tank, so that the HS in the treated liquid is oxidized to elemental sulfur. By setting the second gas pipeline to convey nitrogen into the flow-through tank, an anaerobic environment is formed inside the treatment tank, thus ensuring the reaction between elemental sulfur and wastewater;

[0028] (4) In this solution, the second electric push rod is set to control the movement of the baffle. By the movement of the baffle, the connection between the second gas pipeline and the storage tank can be controlled. When the second gas pipeline is connected to the storage tank, the air flow inside the second gas pipeline can drive the elemental sulfur powder particles inside the storage tank to flow into the flow-through tank together, and then be blown out through the through holes inside the flow-through tank into the liquid inside the treatment tank, so that the elemental sulfur powder particles inside the storage tank can be better mixed with the wastewater inside the treatment tank, making the mixing efficiency higher. Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0030] Figure 1Schematic diagram of the structure of the present invention;

[0031] Figure 2 Schematic diagram of the internal structure of the processing box of the present invention;

[0032] Figure 3 Schematic diagram of the threaded rod structure of the present invention;

[0033] Figure 4 Schematic diagram of the partial sectional structure of the threaded rod of the present invention;

[0034] Figure 5 Schematic diagram of the moving part structure of the present invention;

[0035] Figure 6 Schematic diagram of the moving plate structure used in the present invention;

[0036] Figure 7 Schematic diagram of the bottom structure of the moving part of the present invention;

[0037] Figure 8 Schematic diagram of the internal structure of the storage box of the present invention;

[0038] Figure 9 Schematic diagram of the internal structure of the exhaust pipe of the present invention;

[0039] Figure 10 Schematic diagram of the reduction conveying mechanism of the present invention;

[0040] Figure 11 Schematic diagram of the sectional structure of the moving part of the present invention;

[0041] Figure 12 Schematic diagram of the environmental control mechanism of the present invention;

[0042] Figure 13 Schematic diagram of the installation structure of the connecting pipe in the present invention.

[0043] In the drawings, the list of components represented by each reference numeral is as follows:

[0044] 1. Processing tank; 101. Limit groove; 11. Liquid inlet pipe; 111. First corrugated telescopic pipe; 12. First servo motor; 121. Gear shaft; 122. Tooth ring; 13. Bottom cover; 14. Movable part; 141. Limit block; 142. Screen; 143. Fixing hole; 1431. Filter screen; 144. Buoyancy part; 145. Mounting hole; 146. Mounting cavity; 147. First electric push rod; 148. Moving plate; 149. Threaded part; 15. Threaded rod; 151. Flow channel; 153. Through hole; 156. Stirring part; 157. Fixed ring; 2. Reduction tank; 21. Delivery pump; 22. Connecting pipe; 221. Second corrugated telescopic pipe; 222. Fixed bracket; 223. First mounting seat; 224. Connecting rod; 225. Second mounting seat; 23. First delivery pipe; 231. Second servo motor; 232. Delivery rod; 24. Second delivery pipe; 241. Third servo motor; 242. Connecting pipe; 243. Rotating shaft; 244. Spiral filter element; 245. Drain pipe; 25. First gas delivery pipe; 251. Air outlet hole; 3. Storage tank; 31. Exhaust pipe; 311. Fourth servo motor; 312. Movable rod; 313. Limit rod; 314. Pressure plate; 315. Mounting shaft; 316. Valve flap; 32. Second gas delivery pipe; 321. Second electric push rod; 322. Baffle; 33. Feed pipe; 34. Transmission device; 341. Grinding roller; 4. Mounting pipe. Specific embodiments

[0045] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0046] Please refer to Figures 1-13 , the present invention provides a wastewater treatment device and its process based on sulfur cycle, including:

[0047] A processing tank 1 and a reduction tank 2. A storage tank 3 is fixedly installed on the top of the processing tank 1, and the bottom of the processing tank 1 is movably connected with a bottom cover 13 through a threaded structure;

[0048] A processing concentration mechanism is arranged inside the processing tank 1. The processing concentration mechanism moves inside the processing tank 1 through a movable part 14, concentrating the heavy metal impurities generated after processing at the bottom of the processing tank 1 to prevent the impurities from floating inside the processing tank 1;

[0049] A reduction and delivery mechanism is arranged between the reduction tank 2 and the storage tank 3. The reduction and delivery mechanism transports the reduced elemental sulfur to the storage tank 3 through a first delivery pipe 23 and a second delivery pipe 24;

[0050] An environmental control mechanism is provided on top of the processing tank 1. The environmental control mechanism discharges oxygen in the processing tank 1 by injecting nitrogen into the interior of the processing tank 1, creating an anaerobic environment inside the processing tank 1. The environmental control mechanism injects oxygen into the interior of the reduction tank 2 to create an oxygen-rich environment inside the reduction tank 2.

[0051] In some embodiments, referring to Figure 2 , Figure 5 , Figure 6 , Figure 7 , the processing concentration mechanism includes a limit block 141, a screen 142, a buoyancy member 144, a first electric push rod 147, a moving plate 148, and a threaded rod 15. The limit block 141 is fixedly installed on the side wall of the movable member 14. A limit groove 101 is provided on the inner wall of the processing tank 1. The limit block 141 is slidably connected inside the limit groove 101. The movable member 14 is slidably connected inside the processing tank 1 through the limit block 141. The threaded rod 15 is rotatably connected inside the processing tank 1. An installation hole 145 that fits the threaded rod 15 is provided inside the movable member 14. An installation cavity 146 is provided on the inner wall of the installation hole 145. The first electric push rod 147 is fixedly installed on the inner wall of the installation cavity 146. The moving plate 148 is fixedly installed at the output end of the first electric push rod 147. A threaded member 149 is fixedly installed on one side of the moving plate 148. The threaded member 149 fits the threaded rod 15. The movable member 14 is movably connected to the threaded rod 15 through the threaded member 149. The buoyancy member 144 is fixedly installed at the bottom of the movable member 14. The screen 142 is fixedly installed inside the movable member 14. By providing the buoyancy member 144, the movable member 14 can float on the surface of the wastewater inside the processing tank 1 under normal circumstances. By providing the first electric push rod 147, it can be used to control the movement of the moving plate 148. By providing the limit block 141 and the limit groove 101, the rotation of the movable member 14 can be restricted. When the wastewater treatment inside the processing tank 1 is completed, the first electric push rod 147 moves to drive the moving plate 148 to move, so that the threaded member 149 on one side of the moving plate 148 fits the side wall of the threaded rod 15. When the threaded rod 15 rotates, it can drive the movable member 14 to move inside the processing tank 1. As the movable member 14 moves downward inside the processing tank 1, the liquid flows through the screen 142 to the top of the movable member 14. The heavy metal impurities separated from the liquid are isolated at the bottom of the movable member 14 and finally compressed at the bottom of the processing tank 1, thus greatly reducing the floating impurities in the treated liquid and making the separated impurities easier to be centrally processed, and ensuring the effect of wastewater treatment. The bottom cover 13 is rotatably connected to the bottom of the processing tank 1 through a threaded structure. By rotating and removing the bottom cover 13, the impurities can be taken out of the processing tank 1 at one time.

[0052] In some embodiments, referring to Figure 1 , Figure 2, a first servo motor 12 is fixedly installed at the top of the processing tank 1. A gear shaft 121 is fixedly installed at the output end of the first servo motor 12. A toothed ring 122 is fixedly installed on the side wall of the threaded rod 15. The gear shaft 121 meshes with the toothed ring 122. By setting the first servo motor 12, it can be used to control the rotation of the gear shaft 121. By the rotation of the gear shaft 121, the toothed ring 122 and the threaded rod 15 can be driven to rotate, so that the rotation of the threaded rod 15 can be controlled by the first servo motor 12.

[0053] In some embodiments, refer to Figure 2 , Figure 3 , a stirring member 156 is fixedly installed on the side wall of the threaded rod 15. There are several stirring members 156. A fixing ring 157 is fixedly installed on the side walls of the several stirring members 156. The fixing ring 157 is in contact with the inner wall of the processing tank 1. By setting the stirring member 156, the wastewater inside the processing tank 1 can be stirred when the threaded rod 15 rotates, accelerating the mixing reaction between the elemental sulfur powder particles and the wastewater.

[0054] In some embodiments, refer to Figure 4 , Figure 8 , a flow channel 151 is opened inside the threaded rod 15. A through hole 153 is opened on one side of the flow channel 151 close to the bottom. The through hole 153 penetrates the threaded rod 15. The environmental control mechanism includes a first air pipe 25, a second air pipe 32, a second electric push rod 321 and a baffle 322. The first air pipe 25 is fixedly installed inside the reduction tank 2. Several air outlet holes 251 are opened on one side of the first air pipe 25. The second air pipe 32 is fixedly installed inside the storage tank 3. One end of the second air pipe 32 is communicated with the flow channel 151. The second electric push rod 321 is fixedly installed on the inner wall of the second air pipe 32. The baffle 322 is fixedly installed at the output end of the second electric push rod 321. The baffle 322 fits with the second air pipe 32. A transmission device 34 is fixedly installed on one side of the storage tank 3. A grinding roller 341 is fixedly installed at the connection end of the transmission device 34. By setting the first air pipe 25, oxygen can be conveyed into the reduction tank 2 to form an oxygen-rich environment inside the reduction tank 2, so that HS in the treated liquid is oxidized to elemental sulfur. By setting the second air pipe 32, nitrogen can be conveyed into the flow channel 151 to form an anaerobic environment inside the processing tank 1, thus ensuring the reaction between the elemental sulfur and the wastewater. By setting the second electric push rod 321, it can be used to control the movement of the baffle 322. By the movement of the baffle 322, the connection between the second air pipe 32 and the storage tank 3 can be controlled. When the second air pipe 32 is communicated with the storage tank 3, the air flow inside the second air pipe 32 can drive the elemental sulfur powder particles inside the storage tank 3 to flow into the flow channel 151 together, and then be blown out through the through hole 153 inside the flow channel 151 into the liquid inside the processing tank 1, so that the elemental sulfur powder particles inside the storage tank 3 can be better mixed with the wastewater inside the processing tank 1, making the mixing efficiency higher.

[0055] In some embodiments, referring to Figure 8 , Figure 10 , the environmental control mechanism further includes an exhaust pipe 31, a fourth servo motor 311, a movable rod 312, a limiting rod 313, a pressing plate 314, a mounting shaft 315, and a valve flap 316. The exhaust pipe 31 is fixedly installed on the top of the processing tank 1, and the exhaust pipe 31 is communicated with the processing tank 1. The mounting shaft 315 is fixedly installed inside the exhaust pipe 31. The valve flap 316 is rotationally connected to the side wall of the mounting shaft 315 through a torsion spring. The limiting rod 313 is fixedly installed on the inner wall of the exhaust pipe 31. The pressing plate 314 is slidably connected to the side wall of the limiting rod 313. The movable rod 312 is installed inside the exhaust pipe 31. The fourth servo motor 311 is fixedly installed on the side wall of the exhaust pipe 31. The movable rod 312 is fixedly installed at the output end of the fourth servo motor 311. The movable rod 312 is rotationally connected inside the exhaust pipe 31 through the fourth servo motor 311. The movable rod 312 is located inside the pressing plate 314. An inclined surface is provided at the top of the valve flap 316. By setting the torsion spring, the valve flap 316 always has a force to rotate to one side, so that the valve flap 316 can reset itself when not stressed. By setting the limiting rod 313, the pressing plate 314 can be restricted from rotating. Opposite threaded grooves are provided at both ends of the side wall of the movable rod 312. There are two pressing plates 314, and the two pressing plates 314 are respectively connected to the threaded grooves at both ends. By rotating the movable rod 312, the two pressing plates 314 can move in opposite directions at the same time. By moving the pressing plates 314 in opposite directions, the clamping angle of the valve flap 316 can be controlled, thereby controlling the exhaust volume of the exhaust pipe 31.

[0056] In some embodiments, referring to Figure 2 , Figure 9, a liquid inlet pipe 11 is fixedly installed inside the processing tank 1. One end of the liquid inlet pipe 11 is fixedly installed with a first corrugated expansion pipe 111. One end of the first corrugated expansion pipe 111 is fixedly installed inside the movable member 14. One end of the first corrugated expansion pipe 111 is located at the bottom of the movable member 14. A fixing hole 143 is formed inside the movable member 14. A filter screen 1431 is fixedly installed inside the fixing hole 143. A delivery pump 21 is fixedly installed on the top of the reduction tank 2. The input end of the delivery pump 21 is fixedly installed with a connecting pipe 22. The other end of the connecting pipe 22 is fixedly installed inside the processing tank 1. The other end of the connecting pipe 22 is installed with a second corrugated expansion pipe 221. One end of the second corrugated expansion pipe 221 is located at the top of the fixing hole 143. A first mounting seat 223 is fixedly installed on the top of the movable member 14. A fixing bracket 222 is fixedly installed on the side wall of the second corrugated expansion pipe 221. A second mounting seat 225 is fixedly installed on the side wall of the fixing bracket 222. A connecting rod 224 is rotatably connected inside the first mounting seat 223. The other end of the connecting rod 224 is movably connected inside the second mounting seat 225. By providing the filter screen 1431, sediment can be prevented from moving to the top of the movable member 14 through the fixing hole 143. By providing the first corrugated expansion pipe 111, the liquid inlet pipe 11 can still be connected to the movable member 14 during the movement of the movable member 14 inside the processing tank 1. By providing the liquid inlet pipe 11, the wastewater to be treated can be transported into the processing tank 1, so that the wastewater is located at the bottom of the movable member 14. By providing the delivery pump 21, the treated water inside the processing tank 1 can be pumped into the reduction tank 2 through the connecting pipe 22. By providing the second corrugated expansion pipe 221, it can be ensured that the connecting pipe 22 can always be communicated with the movable member 14 during the movement of the movable member 14. By providing the connecting rod 224, the distance between one end of the second corrugated expansion pipe 221 and the fixing hole 143 can be maintained during the movement of the movable member 14, so that when the connecting pipe 22 extracts the liquid inside the processing tank 1 through the second corrugated expansion pipe 221, sediment will not be sucked in, and the sediment will always remain at the bottom of the movable member 14.

[0057] In some embodiments, refer to Figure 8 , Figure 10, the reduction conveying mechanism includes a second servo motor 231, a conveying rod 232, a third servo motor 241, a connecting pipe 242, a rotating shaft 243, a spiral filter element 244, a drain pipe 245, and a feed pipe 33. The first conveying pipe 23 is fixedly installed at the bottom of the reduction tank 2. The second servo motor 231 is fixedly installed at one end of the first conveying pipe 23. The conveying rod 232 is rotatably connected inside the first conveying pipe 23. One end of the conveying rod 232 is fixedly installed at the output end of the second servo motor 231. The third servo motor 241 is fixedly installed on the top of the second conveying pipe 24. The rotating shaft 243 is fixedly installed at the output end of the third servo motor 241. The rotating shaft 243 is rotatably connected inside the second conveying pipe 24 through the third servo motor 241. The spiral filter element 244 is fixedly installed on the side wall of the rotating shaft 243. The drain pipe 245 is fixedly installed at the bottom of the second conveying pipe 24. The connecting pipe 242 is fixedly installed on the top of the second conveying pipe 24. The feed pipe 33 is fixedly installed on the top of the storage tank 3. One end of the connecting pipe 242 is communicated with the feed pipe 33. The second servo motor 231 is provided to control the rotation of the conveying rod 232. Through the rotation of the conveying rod 232, the liquid inside the first conveying pipe 23 can be conveyed, and the liquid is conveyed through the first conveying pipe 23 into the second conveying pipe 24. By setting the third servo motor 241, it can be used to control the rotation of the rotating shaft 243. Through the rotation of the rotating shaft 243, the spiral filter element 244 can be driven to rotate, so that the elemental sulfur formed during the reduction inside the reduction tank 2 and during the conveying process inside the first conveying pipe 23 can be conveyed through the spiral filter element 244, and the filtered water can fall downward through the spiral filter element 244 into the drain pipe 245 and be discharged. Then, the elemental sulfur conveyed by the spiral filter element 244 can return to the storage tank 3 again through the connecting pipe 242 and the feed pipe 33, realizing the recycling of elemental sulfur.

[0058] In some embodiments, referring to Figure 13 , when the circulation groove 151 is not provided in the threaded rod 15, the second air pipe 32 is not provided in the storage tank 3. An installation pipe 4 is installed on one side of the storage tank 3. Check valves are installed inside both the installation pipe 4 and the connecting pipe 242. The storage tank 3 is communicated with the liquid inlet pipe 11 through the installation pipe 4. When it is necessary to add nitrogen to the treatment tank 1 to create an anaerobic environment, nitrogen is conveyed through the feed pipe 33. Nitrogen enters the liquid inlet pipe 11 through the storage tank 3 and the installation pipe 4, and then is sent into the treatment tank 1 through the first corrugated expansion pipe 111. During this process, the elemental sulfur powder in the storage tank 3 can be conveyed into the treatment tank 1 together with nitrogen, realizing the addition of elemental sulfur. By setting the check valve, nitrogen is prevented from being blown into the second conveying pipe 24 through the connecting pipe 242, and at the same time, waste water is prevented from flowing into the storage tank 3 through the installation pipe 4 when adding waste water.

[0059] Workflow and principle of the present invention: When in use, the wastewater to be treated is poured through the liquid inlet pipe 11. The wastewater flows to the bottom of the movable part 14 through the liquid inlet pipe 11 and the first corrugated expansion pipe 111. Then, by setting the second air delivery pipe 32, nitrogen can be delivered into the flow-through tank 151 to create an anaerobic environment inside the treatment tank 1, thus ensuring the reaction between elemental sulfur and the wastewater. During the nitrogen delivery process, the connection between the second air delivery pipe 32 and the storage tank 3 can be controlled by moving the baffle 322. When the second air delivery pipe 32 is connected to the storage tank 3, the air flow inside the second air delivery pipe 32 can drive the elemental sulfur powder particles inside the storage tank 3 to flow into the flow-through tank 151 together, and then be blown out through the through holes 153 inside the flow-through tank 151 into the liquid inside the treatment tank 1, enabling the elemental sulfur powder particles inside the storage tank 3 to better mix with the wastewater inside the treatment tank 1 and making the mixing efficiency higher. By controlling the rotation of the movable rod 312 with the fourth servo motor 311, the two pressing plates 314 can move in opposite directions simultaneously. By moving the pressing plates 314 in opposite directions, the clamping angle of the valve flap 316 can be controlled, thereby controlling the exhaust volume of the exhaust pipe 31 and ensuring the internal environment of the treatment tank 1. After the treatment is completed, the first servo motor 12 can be used to control the rotation of the gear shaft 121. By rotating the gear shaft 121, the toothed ring 122 and the threaded rod 15 can be driven, so that the rotation of the threaded rod 15 can be controlled by the first servo motor 12. By moving the first electric push rod 147 to drive the moving plate 148 to move, the threaded part 149 on one side of the moving plate 148 is fitted with the side wall of the threaded rod 15, so that the threaded rod 15 can drive the movable part 14 to move inside the treatment tank 1 during rotation. As the movable part 14 moves downward inside the treatment tank 1, the liquid flows through the sieve 142 to the top of the movable part 14. The heavy metal impurities separated from the liquid are isolated at the bottom of the movable part 14 and finally compressed at the bottom of the treatment tank 1. During this process, the delivery pump 21 can pump the treated water inside the treatment tank 1 into the reduction tank 2 through the connecting pipe 22. By setting the second corrugated expansion pipe 221, it can be ensured that the connecting pipe 22 can always be connected to it during the movement of the movable part 14. By setting the connecting rod 224, one end of the second corrugated expansion pipe 221 can maintain the distance from the fixed hole 143 during the movement of the movable part 14, so that when the connecting pipe 22 extracts the liquid inside the treatment tank 1 through the second corrugated expansion pipe 221, the sediment will not be sucked in, and the sediment will always remain at the bottom of the movable part 14. By setting the first air delivery pipe 25, oxygen can be delivered into the reduction tank 2 to create an oxygen-rich environment inside the reduction tank 2, so that the HS in the treated liquid is oxidized to elemental sulfur. By rotating the delivery rod 232, the liquid inside the first delivery pipe 23 can be delivered, and the liquid is delivered through the first delivery pipe 23 to the second delivery pipe 24. By setting the third servo motor 241, it can be used to control the rotation of the rotating shaft 243. By rotating the rotating shaft 243, the spiral filter element 244 can be driven to rotate.The elemental sulfur formed by reduction during the transportation inside the reduction tank 2 and inside the first delivery pipe 23 can be transported through the spiral filter element 244, and the filtered water can fall downward through the spiral filter element 244 into the drain pipe 245 for discharge. After that, the elemental sulfur transported by the spiral filter element 244 can return to the storage tank 3 again through the connecting pipe 242 and the feed pipe 33, realizing the recycling of elemental sulfur.

[0060] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0061] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wastewater treatment device based on the sulfur cycle, characterized in that, Including: A processing box (1) and a reduction box (2). A storage box (3) is fixedly installed on the top of the processing box (1), and a bottom cover (13) is movably connected to the bottom of the processing box (1) through a threaded structure; A processing concentration mechanism, which is arranged inside the processing box (1). The processing concentration mechanism moves inside the processing box (1) through a movable member (14) to concentrate the heavy metal impurities generated after processing at the bottom of the processing box (1), preventing the impurities from floating inside the processing box (1); A reduction conveying mechanism, which is arranged between the reduction box (2) and the storage box (3). The reduction conveying mechanism conveys the reduced elemental sulfur into the storage box (3) through a first conveying pipe (23) and a second conveying pipe (24); An environment control mechanism, which is arranged on the top of the processing box (1). The environment control mechanism discharges the oxygen in the processing box (1) by injecting nitrogen into the processing box (1) to form an anaerobic environment inside the processing box (1), and forms an oxygen-rich environment inside the reduction box (2) by injecting oxygen into the reduction box (2).

2. The wastewater treatment device based on sulfur cycle according to claim 1, wherein: The processing concentration mechanism includes a limit block (141), a screen (142), a buoyancy member (144), a first electric push rod (147), a moving plate (148) and a threaded rod (15). The limit block (141) is fixedly installed on the side wall of the movable member (14). A limit groove (101) is formed in the inner wall of the processing box (1). The limit block (141) is slidably connected inside the limit groove (101). The movable member (14) is slidably connected inside the processing box (1) through the limit block (141). The threaded rod (15) is rotatably connected inside the processing box (1). An installation hole (145) matching the threaded rod (15) is formed inside the movable member (14). An installation cavity (146) is formed in the inner wall of the installation hole (145). The first electric push rod (147) is fixedly installed on the inner wall of the installation cavity (146). The moving plate (148) is fixedly installed at the output end of the first electric push rod (147). A threaded member (149) is fixedly installed on one side of the moving plate (148). The threaded member (149) matches the threaded rod (15). The movable member (14) is movably connected to the threaded rod (15) through the threaded member (149). The buoyancy member (144) is fixedly installed at the bottom of the movable member (14). The screen (142) is fixedly installed inside the movable member (14).

3. The wastewater treatment device based on the sulfur cycle according to claim 2, characterized in that: A first servo motor (12) is fixedly installed on the top of the processing box (1). A gear shaft (121) is fixedly installed at the output end of the first servo motor (12). A toothed ring (122) is fixedly installed on the side wall of the threaded rod (15). The gear shaft (121) meshes with the toothed ring (122).

4. The wastewater treatment device based on sulfur cycle according to claim 2, characterized in that: A stirring member (156) is fixedly installed on the side wall of the threaded rod (15). A plurality of the stirring members (156) are provided. A fixing ring (157) is fixedly installed on the side walls of the plurality of stirring members (156). The fixing ring (157) is in contact with the inner wall of the treatment tank (1).

5. The wastewater treatment device based on sulfur cycle according to claim 2, characterized in that: A circulation groove (151) is formed inside the threaded rod (15). A through hole (153) is formed on one side of the circulation groove (151) close to the bottom. The through hole (153) penetrates the threaded rod (15).

6. The wastewater treatment device based on the sulfur cycle according to claim 5, characterized in that: The environment control mechanism includes a first air delivery pipe (25), a second air delivery pipe (32), a second electric push rod (321) and a baffle (322). The first air delivery pipe (25) is fixedly installed inside the reduction tank (2). A plurality of air outlet holes (251) are formed on one side of the first air delivery pipe (25). The second air delivery pipe (32) is fixedly installed inside the storage tank (3). One end of the second air delivery pipe (32) is communicated with the circulation groove (151). The second electric push rod (321) is fixedly installed on the inner wall of the second air delivery pipe (32). The baffle (322) is fixedly installed at the output end of the second electric push rod (321). The baffle (322) fits with the second air delivery pipe (32). A transmission device (34) is fixedly installed on one side of the storage tank (3). A grinding roller (341) is fixedly installed at the connection end of the transmission device (34).

7. The wastewater treatment device based on sulfur cycle according to claim 6, characterized in that: The environment control mechanism further includes an exhaust pipe (31), a fourth servo motor (311), a movable rod (312), a limiting rod (313), a pressing plate (314), a mounting shaft (315) and a valve flap (316). The exhaust pipe (31) is fixedly installed on the top of the treatment tank (1). The exhaust pipe (31) is communicated with the treatment tank (1). The mounting shaft (315) is fixedly installed inside the exhaust pipe (31). The valve flap (316) is rotatably connected to the side wall of the mounting shaft (315) through a torsion spring. The limiting rod (313) is fixedly installed on the inner wall of the exhaust pipe (31). The pressing plate (314) is slidably connected to the side wall of the limiting rod (313). The movable rod (312) is installed inside the exhaust pipe (31). The fourth servo motor (311) is fixedly installed on the side wall of the exhaust pipe (31). The movable rod (312) is fixedly installed at the output end of the fourth servo motor (311). The movable rod (312) is rotatably connected inside the exhaust pipe (31) through the fourth servo motor (311). The movable rod (312) is located inside the pressing plate (314). An inclined surface is formed on the top of the valve flap (316).

8. The wastewater treatment device based on the sulfur cycle according to claim 1, characterized in that: Inside the processing box (1), a liquid inlet pipe (11) is fixedly installed. One end of the liquid inlet pipe (11) is fixedly installed with a first corrugated expansion pipe (111). One end of the first corrugated expansion pipe (111) is fixedly installed inside the movable part (14). One end of the first corrugated expansion pipe (111) is located at the bottom of the movable part (14). A fixing hole (143) is formed inside the movable part (14). A filter screen (1431) is fixedly installed inside the fixing hole (143). At the top of the reduction box (2), a delivery pump (21) is fixedly installed. The input end of the delivery pump (21) is fixedly installed with a connecting pipe (22). The other end of the connecting pipe (22) is fixedly installed inside the processing box (1). The other end of the connecting pipe (22) is installed with a second corrugated expansion pipe (221). One end of the second corrugated expansion pipe (221) is located at the top of the fixing hole (143). A first mounting seat (223) is fixedly installed at the top of the movable part (14). A fixing frame (222) is fixedly installed on the side wall of the second corrugated expansion pipe (221). A second mounting seat (225) is fixedly installed on the side wall of the fixing frame (222). A connecting rod (224) is rotatably connected inside the first mounting seat (223). The other end of the connecting rod (224) is movably connected inside the second mounting seat (225).

9. The wastewater treatment device based on the sulfur cycle according to claim 1, characterized in that: The reduction and delivery mechanism includes a second servo motor (231), a delivery rod (232), a third servo motor (241), a communicating pipe (242), a rotating shaft (243), a spiral filter element (244), a liquid discharge pipe (245) and a feed pipe (33). The first delivery pipe (23) is fixedly installed at the bottom of the reduction box (2). The second servo motor (231) is fixedly installed at one end of the first delivery pipe (23). The delivery rod (232) is rotatably connected inside the first delivery pipe (23). One end of the delivery rod (232) is fixedly installed at the output end of the second servo motor (231). The third servo motor (241) is fixedly installed on the top of the second delivery pipe (24). The rotating shaft (243) is fixedly installed at the output end of the third servo motor (241). The rotating shaft (243) is rotatably connected inside the second delivery pipe (24) through the third servo motor (241). The spiral filter element (244) is fixedly installed on the side wall of the rotating shaft (243). The liquid discharge pipe (245) is fixedly installed at the bottom of the second delivery pipe (24). The communicating pipe (242) is fixedly installed on the top of the second delivery pipe (24). The feed pipe (33) is fixedly installed on the top of the storage box (3). One end of the communicating pipe (242) is communicated with the feed pipe (33).

10. The process of a wastewater treatment device based on the sulfur cycle according to any one of claims 1-9, characterized in that: Specifically, it includes the following steps: S1: When in use, the wastewater to be treated is poured through the liquid inlet pipe (11). The wastewater flows through the liquid inlet pipe (11) and the first corrugated expansion pipe (111) to the bottom of the movable part (14). Then, nitrogen is conveyed into the circulation tank (151) through the second gas transmission pipe (32) to create an anaerobic environment inside the treatment tank (1), thus ensuring the reaction between elemental sulfur and the wastewater. During the nitrogen conveyance, the air circulation inside the second gas transmission pipe (32) drives the elemental sulfur powder particles inside the storage tank (3) to flow into the circulation tank (151) together, and then they are blown out through the through holes (153) inside the circulation tank (151) into the liquid inside the treatment tank (1), enabling the elemental sulfur powder particles inside the storage tank (3) to better mix with the wastewater inside the treatment tank (1); S2: After the treatment is completed, the first servo motor (12) can be used to control the rotation of the gear shaft (121). The rotation of the gear shaft (121) can drive the gear ring (122) and the threaded rod (15) to rotate. Thus, the rotation of the threaded rod (15) can be controlled by the first servo motor (12). The movement of the first electric push rod (147) drives the movement of the moving plate (148), making the threaded part (149) on one side of the moving plate (148) fit with the side wall of the threaded rod (15). During the rotation of the threaded rod (15), the movable part (14) can be driven to move inside the treatment tank (1). When the movable part (14) moves downward inside the treatment tank (1), the liquid flows through the screen (142) to the top of the movable part (14). The heavy metal impurities separated from the liquid are isolated at the bottom of the movable part (14) and finally compressed at the bottom of the treatment tank (1); During this process, the delivery pump (21) can pump the treated water inside the treatment tank (1) into the reduction tank (2) through the connecting pipe (22). The second corrugated expansion pipe (221) can ensure that the connecting pipe (22) can always be connected to it during the movement of the movable part (14). The connecting rod (224) enables one end of the second corrugated expansion pipe (221) to maintain the distance from the fixed hole (143) during the movement of the movable part (14), so that when the connecting pipe (22) extracts the liquid inside the treatment tank (1) through the second corrugated expansion pipe (221), the sediment will not be sucked in; S3: By setting the first gas pipeline (25), oxygen can be transported into the reduction tank (2) to create an oxygen-rich environment inside the reduction tank (2), so that H₂S in the treated liquid is oxidized to elemental sulfur. By rotating the conveying rod (232), the liquid inside the first conveying pipe (23) can be transported, and the liquid is transported through the first conveying pipe (23) into the second conveying pipe (24). By setting the third servo motor (241), it can be used to control the rotation of the rotating shaft (243). By rotating the rotating shaft (243), the spiral filter element (244) can be driven to rotate, so that the elemental sulfur formed during the reduction inside the reduction tank (2) and during the transportation inside the first conveying pipe (23) can be transported through the spiral filter element (244). The filtered water can fall downward through the spiral filter element (244) into the drain pipe (245) and be discharged. Then, through the connecting pipe (242) and the feed pipe (33), the elemental sulfur transported by the spiral filter element (244) can return to the storage tank (3) again through the connecting pipe (242) and the feed pipe (33), realizing the recycling of elemental sulfur.

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