Rural domestic sewage ecological treatment equipment and process

Abstract

The invention discloses ecological treatment equipment and process for rural domestic sewage, and belongs to the technical field of sewage treatment. The rural domestic sewage ecological treatment equipment comprises a treatment box, a piston bin is arranged between a purification bin and a reaction bin, and an aeration assembly is arranged on the inner wall of the piston bin; by controlling opening and closing of internal channels of the five-way valve and the three-way valve and cooperating with piston movement of the piston plate in the piston bin, gas generated after aeration can be conveyed into the high-pressure gas separation membrane, and by means of the permeation rate difference of a special polymeric membrane to different gases, when carbon dioxide permeates through the high-pressure gas separation membrane, the gas in the high-pressure gas separation membrane is separated from the high-pressure gas separation membrane. The sewage enters the storage tank through the air pump to be stored, and when the sewage is subjected to biological denitrification treatment, carbon dioxide in the storage tank is used for aerating the sewage through the first aeration pipe and is consumed as a carbon source for chemoautotrophic nitrifying bacteria in nitration reaction, so that the emission of the carbon dioxide can be reduced, and the air quality of a surrounding area is ensured.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to an ecological treatment equipment and process for rural domestic wastewater. Background Technology

[0002] Currently, the output of rural domestic sewage in China is on the rise, but the treatment rate of rural domestic sewage is low. Many places lack public facilities such as toilets and short-slope treatment facilities, which means that a large amount of sewage generated by some residents cannot be treated in a timely manner, thus polluting the water environment. Due to the dispersed rural population and the small area of ​​concentrated residence, there are many and widespread points of discharge of rural domestic sewage. Without unified planning, scattered sewage is discharged into nearby rivers at will, causing pollution to the water environment.

[0003] Chinese patent CN118359350B discloses an ecological purification tank for domestic sewage and its treatment process. By using a rotating component added to the installation frame, the bottom filter plate assembly moves up and down to connect the ventilation chamber inside the installation frame with the installation chamber. This, combined with the gas introduced by the air pump, guides the airflow into the ventilation chamber and acts on the rotating component. The pneumatic action drives the rotating component to rotate, thereby rotating the biofilm treatment component. This ensures that the packing sheets submerged in the purification tank make full and uniform contact throughout the tank, thoroughly biologically treating the domestic sewage. This greatly increases the treatment range of aerobic microorganisms in the purification tank, improves the uniformity of treatment, and ultimately improves the water purification efficiency, resulting in good performance.

[0004] However, the domestic sewage ecological purification tank and its treatment process generate carbon dioxide when aerating sewage. This carbon dioxide is directly emitted into the air, causing excessively high carbon dioxide concentrations in local areas, reducing air quality in the area, and thus impacting the surrounding ecological environment. Summary of the Invention

[0005] The purpose of this invention is to provide an ecological treatment equipment for rural domestic sewage to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an ecological treatment equipment for rural domestic sewage, comprising a treatment tank, wherein a purification chamber and a reaction chamber are arranged inside the treatment tank, and a piston chamber is arranged between the purification chamber and the reaction chamber. An aeration assembly is arranged on the inner wall of the piston chamber, the aeration assembly including a sludge discharge mechanism arranged on the inner wall of the purification chamber. The treatment tank is provided with a recovery mechanism for treating the carbon dioxide generated during sewage aeration, the recovery mechanism including a hydraulic cylinder installed on the treatment tank, a piston plate fixedly connected to the outer wall of one end of the hydraulic cylinder, the piston plate dividing the piston chamber into a water absorption chamber. The treatment chamber comprises a treatment chamber and an air intake chamber. A five-way valve is installed on the inner wall of the treatment chamber. A connecting pipe is installed on the outer wall of the five-way valve. A first air intake pipe is installed on the outer wall of the five-way valve. An air inlet pipe is installed on the top outer wall of the five-way valve. A three-way valve is installed on the outer wall of the air inlet pipe. An air vent pipe is installed on the outer wall of the three-way valve. A high-pressure gas separation membrane adapted to the air vent pipe is installed on the outer wall of the treatment chamber. An air storage tank is installed on the outer wall of the high-pressure gas separation membrane. An air pump is installed on the outer wall of the treatment chamber. The air pump is connected to the air storage tank via an air vent pipe. A storage tank adapted to the air pump is installed on the outer wall of the treatment chamber.

[0007] Furthermore, a second suction pipe is installed on the top outer wall of the five-way valve, and a second aeration pipe adapted to the purification chamber is provided on the top outer wall of the five-way valve.

[0008] Furthermore, a four-way valve is installed on the outer wall of the ventilation pipe, a first aeration pipe adapted to the reaction chamber is provided on the outer wall of the four-way valve, and an exhaust pipe is installed on the outer wall of the four-way valve.

[0009] Furthermore, the slag discharge mechanism includes a connecting shaft installed inside the purification chamber. A motor adapted to the connecting shaft is installed on the outer wall of the treatment box. A drive wheel is fixedly connected to the outer wall of the connecting shaft. A belt is driven to the outer wall of the drive wheel. A connecting block is fixedly connected to the outer wall of the belt. A scraper is rotatably connected to the outer wall of the connecting block. A torsion spring adapted to the scraper is installed on the inner wall of the connecting block. The treatment box is provided with a collection trough. A scraper adapted to the scraper is installed on the inner wall of the collection trough. A connecting channel for connecting the collection trough and the piston chamber is provided inside the treatment box. A first flow channel adapted to the purification chamber is provided on the inner wall of the piston chamber. A limit plate is fixedly connected to the outer wall of the piston plate.

[0010] Furthermore, a first filter element is installed on the inner wall of the collection tank, and a switch door is installed on the outer wall of the processing box.

[0011] Furthermore, an electric cylinder is installed inside the processing box. A baffle is fixedly connected to the outer wall of the electric cylinder. A connecting plate is fixedly connected to the outer wall of the baffle. A through groove adapted to the connecting channel is provided on the outer wall of the connecting plate. A connecting rod is fixedly connected to the outer wall of the connecting plate. A limit block is fixedly connected to the outer wall of one end of the connecting rod. A fixing plate is fixedly connected to the outer wall of the limit block. A first through hole is opened on the outer wall of the fixing plate. A first spring plate is fixedly connected to the outer wall of the fixing plate. A first sealing plate adapted to the first through hole is provided on the outer wall of the first spring plate. A second filter element is installed on the inner wall of the first flow channel. A second through hole is opened on the outer wall of the fixing plate. A second spring plate is fixedly connected to the outer wall of the fixing plate. A second sealing plate adapted to the second through hole is provided on the outer wall of the second spring plate. A second flow channel is opened at the end of the piston chamber away from the first flow channel.

[0012] Furthermore, the inner wall of the processing box is provided with an air chamber adapted to the fixed plate, and a chute is provided inside the processing box at the position of the second flow channel. The inner wall of the processing box is provided with a ventilation groove for connecting the air chamber and the chute. A slider is slidably connected to the inner wall of the chute, and a sealing block is fixedly connected to the outer wall of the slider. A third through hole is provided on the outer wall of the slider, and a third spring plate is fixedly connected to the outer wall of the slider. A third sealing plate adapted to the third through hole is provided on the outer wall of the third spring plate.

[0013] Furthermore, multiple sets of solar panels are installed on the top outer wall of the processing box, and a battery adapted to the solar panels is provided on the top outer wall of the processing box.

[0014] A treatment process for an ecological treatment equipment for rural domestic sewage includes the following steps:

[0015] S1: First, inject domestic sewage into the purification chamber and add activated sludge into the sewage;

[0016] S2: Start the hydraulic cylinder to push the piston plate to make piston movement inside the piston chamber, thereby drawing outside air into the piston chamber and aerating the sewage inside the purification chamber.

[0017] S3: By controlling the five-way valve and cooperating with the piston plate to make piston movement inside the piston chamber, the gas generated during aeration is transported to the high-pressure gas separation membrane. Utilizing the difference in the permeation rate of different gases by the special polymer membrane, when carbon dioxide passes through the high-pressure gas separation membrane, the four-way valve is controlled to pass carbon dioxide into the storage tank.

[0018] S4: The slag discharge mechanism collects impurities floating on the surface of the sewage, and then the piston plate moves inside the piston chamber to transport the sewage inside the purification chamber to the inside of the reaction chamber.

[0019] S5: Start the air pump and, in conjunction with the four-way valve, transport the purified carbon dioxide from the storage tank into the interior of the first aeration pipe, and aerate the wastewater inside the reaction chamber, so that the purified carbon dioxide mixes with the wastewater, thereby consuming the chemoautotrophic nitrifying bacteria in the nitrification reaction as a "carbon source" in the biological denitrification process of wastewater treatment.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] (1) By controlling the opening and closing of the internal channels of the five-way valve and the three-way valve, and cooperating with the piston movement of the piston plate inside the piston chamber, the present invention can aerate the sewage inside the purification chamber, improve the reaction efficiency of sewage and activated sludge, and the gas generated after aeration will be transported to the interior of the high-pressure gas separation membrane. By utilizing the difference in the permeation rate of different gases by the special polymer membrane, carbon dioxide will pass through the high-pressure gas separation membrane and enter the storage tank for storage by the air pump. When the sewage undergoes biological denitrification treatment, the carbon dioxide inside the storage tank will be aerated through the first aeration pipe to aerate the sewage, which will be consumed as a "carbon source" for the chemoautotrophic nitrifying bacteria in the nitrification reaction, thereby reducing the emission of carbon dioxide and ensuring the air quality of the surrounding area.

[0022] (2) The present invention drives the movement of the scraper plate by the motor-driven connecting shaft belt, which can push the floating objects along with a small amount of sewage into the inside of the collection tank. With the filtration of the first filter element, the floating objects are trapped inside the collection tank, while the sewage enters the water absorption chamber. With the descent of the piston plate, the sewage is squeezed back into the purification chamber. When the surface of the scraper plate touches the surface of the scraper, the scraper will push the scraper plate to rotate. Through the friction between the scraper plates, the scraper plate can scrape off the remaining floating objects on the surface of the scraper plate, which improves the overall usability of the device.

[0023] (3) The present invention uses an electric cylinder to push the baffle to limit the connection channel, so that the second through hole moves to the surface of the first flow channel, and the third through hole moves to the surface of the second flow channel. With the piston movement of the piston plate inside the piston chamber, the sewage inside the purification chamber can be sucked into the water absorption chamber and the sewage inside the water absorption chamber can be squeezed into the reaction chamber. Attached Figure Description

[0024] Figure 1 This is a 3D physical image of an ecological treatment equipment for rural domestic sewage according to the present invention;

[0025] Figure 2 This is a schematic diagram of the overall structure of an ecological treatment equipment for rural domestic sewage according to the present invention;

[0026] Figure 3 This is a schematic diagram of the internal structure of the processing box in this invention;

[0027] Figure 4 This is a schematic diagram of the interaction between the hydraulic cylinder and the piston plate in this invention;

[0028] Figure 5 This is a schematic diagram of the interaction between the five-way valve and the connecting pipe in this invention;

[0029] Figure 6 This is a schematic diagram of the structure in which the high-pressure gas separation membrane and the gas storage tank cooperate in this invention;

[0030] Figure 7 This is a schematic diagram of the structure in which the slag scraper and the torsion spring cooperate in this invention;

[0031] Figure 8 This is a schematic diagram of the interlocking structure of the connecting plate and the through groove in this invention;

[0032] Figure 9 This is a schematic diagram of the interaction between the limiting block and the fixing plate in this invention;

[0033] Figure 10 This is a schematic diagram of the interaction between the venting groove and the slider in this invention;

[0034] Figure 11 This is a schematic diagram of the interaction between the third spring sheet and the third sealing plate in this invention.

[0035] In the diagram: 1. Processing tank; 2. Purification chamber; 3. Reaction chamber; 4. Piston chamber; 401. Water absorption chamber; 402. Air absorption chamber; 5. Hydraulic cylinder; 6. Piston plate; 7. Five-way valve; 8. Connecting pipe; 9. First air intake pipe; 10. Air inlet pipe; 11. Three-way valve; 12. Vent pipe; 13. High-pressure gas separation membrane; 14. Gas storage tank; 15. Air pump; 16. Vent pipe; 17. Storage tank; 18. Four-way valve; 19. First aeration pipe; 20. Second air intake pipe; 21. Second aeration pipe; 22. Connecting shaft; 23. Motor; 24. Drive wheel; 25. Belt; 26. Connecting block; 27. Sludge scraper; 28. Torsion spring; 29. ​​Collection tank; 30. Scraper; 31. 31. First filter element; 32. Connecting channel; 33. Exhaust pipe; 34. Electric cylinder; 35. Baffle; 36. Connecting plate; 37. Through groove; 38. Connecting rod; 39. Limiting block; 40. Fixing plate; 41. First through hole; 42. First spring plate; 43. First sealing plate; 44. First flow channel; 45. Limiting plate; 46. Opening and closing door; 47. Second filter element; 48. Air chamber; 49. Second flow channel; 50. Second through hole; 51. Second spring plate; 52. Second sealing plate; 53. Slide groove; 54. Ventilation groove; 55. Sliding block; 56. Sealing block; 57. Third through hole; 58. Third spring plate; 59. Third sealing plate; 60. Solar panel; 61. Battery. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0037] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] Example 1

[0039] Please see Figures 1-11 This invention provides a technical solution: an ecological treatment equipment for rural domestic sewage, comprising a treatment tank 1, with a purification chamber 2 and a reaction chamber 3 inside the treatment tank 1, and a piston chamber 4 between the purification chamber 2 and the reaction chamber 3. An aeration assembly is installed on the inner wall of the piston chamber 4, including a slag discharge mechanism installed on the inner wall of the purification chamber 2. The treatment tank 1 is equipped with a recovery mechanism for treating the carbon dioxide generated during sewage aeration. The recovery mechanism includes a hydraulic cylinder 5 installed on the treatment tank 1, with a piston plate 6 fixedly connected to the outer wall of one end of the hydraulic cylinder 5. The piston plate 6 divides the piston chamber 4 into a water intake chamber 401 and an air intake chamber 402. A five-way valve 7 is installed on the inner wall of the treatment tank 1, with a connecting pipe 8 installed on the outer wall of the five-way valve 7, and a first air intake pipe 9 installed on the outer wall of the five-way valve 7. An air inlet pipe 10 is installed on the wall. A three-way valve 11 is installed on the outer wall of the air inlet pipe 10. A vent pipe 12 is installed on the outer wall of the three-way valve 11. A high-pressure gas separation membrane 13 adapted to the vent pipe 12 is installed on the outer wall of the treatment box 1. A gas storage tank 14 is installed on the outer wall of the high-pressure gas separation membrane 13. An air pump 15 is installed on the outer wall of the treatment box 1. The air pump 15 is connected to the gas storage tank 14 through a vent pipe 16. A storage tank 17 adapted to the air pump 15 is installed on the outer wall of the treatment box 1. A second suction pipe 20 is installed on the top outer wall of the five-way valve 7. A second aeration pipe 21 adapted to the purification chamber 2 is installed on the top outer wall of the five-way valve 7. A four-way valve 18 is installed on the outer wall of the vent pipe 16. A first aeration pipe 19 adapted to the reaction chamber 3 is installed on the outer wall of the four-way valve 18. An exhaust pipe 33 is installed on the outer wall of the four-way valve 18.

[0040] In use, after injecting domestic sewage into the purification chamber 2, activated sludge is added to the sewage. At this time, the external power supply is connected to start the hydraulic cylinder 5 to push the piston plate 6 to make piston movement inside the piston chamber 4. When the hydraulic cylinder 5 pushes the piston plate 6 downward, the three-way valve 11 is controlled to close the channel between the air inlet pipe 10 and the air vent pipe 12, open the channel between the air inlet pipe 10 and the five-way valve 7, and control the five-way valve 7 to open the channel between the connecting pipe 8 and the air inlet pipe 10, and close other channels, so that external air is drawn into the air intake chamber 402 through the air inlet pipe 10 and the connecting pipe 8. When the hydraulic cylinder 5 pushes the piston plate 6 upward, it will squeeze the air inside the air intake chamber 402, thereby squeezing the air into the connecting pipe 8. At this time, the five-way valve 7 is controlled to open the channel between the connecting pipe 8 and the second aeration pipe 21, and close other channels, so that the air is squeezed into the second aeration pipe 21 and aerated the sewage inside the purification chamber 2, improving the reaction efficiency of sewage and activated sludge. The gas generated after aeration will remain inside the purification chamber 2.

[0041] After the reaction between the wastewater and activated sludge is complete, aeration of the wastewater is stopped, allowing the wastewater to settle inside the purification chamber 2. Simultaneously, hydraulic cylinder 5 continues to drive piston plate 6 within piston chamber 4, controlling five-way valve 7 to open the channel between connecting pipe 8 and the first suction pipe 9, while closing other channels. This allows piston plate 6 to draw gas from the purification chamber 2 into the first suction pipe 9 as it descends, ultimately entering the suction chamber 402 through connecting pipe 8. Conversely, as piston plate 6 rises, it compresses the gas inside suction chamber 402, forcing it into connecting pipe 8. At this point, five-way valve 7 opens the channel between connecting pipe 8 and intake pipe 10, closing other channels, allowing gas from connecting pipe 8 to enter intake pipe 10. At this time, the three-way valve 11 limits the intake pipe 10 and opens the channel between it and the vent pipe 12, allowing gas to enter the interior of the high-pressure gas separation membrane 13 through the vent pipe 12. Utilizing the difference in permeation rate of different gases by the special polymer membrane, when carbon dioxide passes through the high-pressure gas separation membrane 13 and enters the gas storage tank 14, the air pump 15 works in conjunction with the four-way valve 18 to release the limit on the vent pipe 16 and close other channels, drawing the purified carbon dioxide gas inside the gas storage tank 14 into the storage tank 17 for storage. When other gases pass through the high-pressure gas separation membrane 13 and enter the gas storage tank 14, the four-way valve 18 opens the channel between the vent pipe 16 and the exhaust pipe 33 and closes other channels, allowing the other gases to be discharged into the air through the exhaust pipe 33.

[0042] After the sewage in the purification chamber 2 has settled, the sewage is transported to the reaction chamber 3 for biological denitrification. At this time, the four-way valve 18 is controlled to open the channel between the ventilation pipe 16 and the first aeration pipe 19 and close other channels. Then, the carbon dioxide in the storage tank 17 can be pumped into the first aeration pipe 19 by the air pump 15 to aerate the sewage in the reaction chamber 3, so that the sewage can come into full contact with the carbon dioxide and be consumed as a "carbon source" by the chemoautotrophic nitrifying bacteria in the nitrification reaction.

[0043] By controlling the five-way valve 7 to open the channel between the second intake pipe 20 and the intake pipe 10, and closing other channels, and in conjunction with the piston movement of the piston plate 6 inside the piston chamber 4, the unconsumed carbon dioxide inside the reaction chamber 3 can be collected again, purified and stored in the storage tank 17 through the high-pressure gas separation membrane 13, thereby reducing carbon dioxide emissions and ensuring the air quality of the surrounding area.

[0044] The slag discharge mechanism includes a connecting shaft 22, which is installed inside the purification chamber 2. A motor 23 adapted to the connecting shaft 22 is installed on the outer wall of the treatment box 1. A drive wheel 24 is fixedly connected to the outer wall of the connecting shaft 22. A belt 25 is driven to the outer wall of the drive wheel 24. A connecting block 26 is fixedly connected to the outer wall of the belt 25. A scraper 27 is rotatably connected to the outer wall of the connecting block 26. A torsion spring 28 adapted to the scraper 27 is installed on the inner wall of the connecting block 26. A collection tank 29 is provided in the treatment box 1. A scraper 30 adapted to the scraper 27 is installed on the inner wall of the collection tank 29. A connecting channel 32 for connecting the collection tank 29 and the piston chamber 4 is provided inside the treatment box 1. A first flow channel 44 adapted to the purification chamber 2 is provided on the inner wall of the piston chamber 4. A limit plate 45 is fixedly connected to the outer wall of the piston plate 6. A first filter element 31 is installed on the inner wall of the collection tank 29. A switch door 46 is installed on the outer wall of the treatment box 1.

[0045] During use, when aerating the wastewater inside the purification chamber 2, the tiny bubbles in the wastewater push floating debris to the surface. At this time, the motor 23 is started, driving the connecting shaft 22 to rotate. The rotating connecting shaft 22 drives the belt 25 to rotate via the drive wheel 24, thereby pushing the scraper 27 to scrape the surface of the wastewater. When the surface of the scraper 27 touches the surface of the scraper 30, the scraper 30 exerts a pushing force on the scraper 27, causing the scraper 27 to move across the surface of the scraper 30. When the position is reached, the scraper 27 will rotate around the center point of the connecting block 26, and the torsion spring 28 will twist. During this process, one end of the scraper 30 will press against the surface of the scraper 27, and through the friction between the scraper 30 and the scraper 27, the scraper 30 can scrape off the floating matter remaining on the surface of the scraper 27. After the scraper 27 has completely passed the surface of the scraper 30, the torsion spring 28 will be pushed by the force to reset the scraper 27, so that the scraper 27 will not affect the subsequent scraping work, thus improving the overall usability of the device.

[0046] During the scraping process of the scraper plate 27, floating debris along with a small amount of sewage is pushed into the collection tank 29. The debris is then filtered by the first filter element 31, trapping it inside the collection tank 29. The sewage then passes through the first filter element 31 and enters the connecting channel 32. When the hydraulic cylinder 5 pulls the piston plate 6 upward, the piston plate 6 pushes the limiting plate 45 upward simultaneously, releasing the limiting plate 45 from its position on the connecting channel 32, allowing the sewage inside the connecting channel 32 to flow freely. When the sewage flows into the suction chamber 401, the piston plate 6 pushes the limiting plate 45 down, and the limiting plate 45 will limit the connecting channel 32 again. At this time, the sewage in the suction chamber 401 can be squeezed by the continued descent of the piston plate 6, so that the sewage inside the suction chamber 401 is squeezed into the purification chamber 2 through the first flow channel 44. After the sewage is treated, it is only necessary to open the switch door 46, take out the first filter element 31 for cleaning, and then reinstall it into the collection tank 29, which improves the overall ease of use of the device.

[0047] An electric cylinder 34 is installed inside the processing box 1. A baffle 35 is fixedly connected to the outer wall of the electric cylinder 34. A connecting plate 36 is fixedly connected to the outer wall of the baffle 35. A through groove 37 adapted to the connecting channel 32 is provided on the outer wall of the connecting plate 36. A connecting rod 38 is fixedly connected to the outer wall of the connecting plate 36. A limit block 39 is fixedly connected to the outer wall of one end of the connecting rod 38. A fixing plate 40 is fixedly connected to the outer wall of the limit block 39. A first through hole 41 is opened on the outer wall of the fixing plate 40. A first spring plate 42 is fixedly connected to the outer wall of the fixing plate 40. A first sealing plate 43 adapted to the first through hole 41 is provided on the outer wall of the first spring plate 42. A second filter element 47 is installed on the inner wall of the first flow channel 44. A second through hole 50 is opened on the outer wall of the fixing plate 40. A second spring plate 51 is fixedly connected to the piston chamber 4. A second sealing plate 52 adapted to the second through hole 50 is provided on the outer wall of the second spring plate 51. A second flow channel 49 is opened at the end of the piston chamber 4 away from the first flow channel 44. An air chamber 48 adapted to the fixed plate 40 is provided on the inner wall of the processing box 1. A sliding groove 53 is opened at the position of the second flow channel 49 inside the processing box 1. A ventilation groove 54 for connecting the air chamber 48 and the sliding groove 53 is provided on the inner wall of the processing box 1. A slider 55 is slidably connected to the inner wall of the sliding groove 53. A sealing block 56 is fixedly connected to the outer wall of the slider 55. A third through hole 57 is opened on the outer wall of the slider 55. A third spring plate 58 is fixedly connected to the outer wall of the slider 55. A third sealing plate 59 adapted to the third through hole 57 is provided on the outer wall of the third spring plate 58.

[0048] When in use, when sewage flows into the suction chamber 401 from the connecting channel 32, it passes through the groove 37 on the surface of the connecting plate 36. When the piston plate 6 squeezes the sewage in the suction chamber 401 into the first flow channel 44, the sewage enters the interior of the first through hole 41 and applies a thrust to the surface of the first sealing plate 43, thereby pushing the first sealing plate 43 to rotate around the connection between the first spring plate 42 and the fixing plate 40, thereby releasing the restriction on the first through hole 41, allowing the sewage to pass through the first flow channel 44 from the first through hole 41 into the interior of the purification chamber 2, thereby preventing the sewage in the purification chamber 2 from being sucked into the interior of the suction chamber 401 through the first flow channel 44 when the piston plate 6 rises.

[0049] When it is necessary to transport the wastewater inside the purification chamber 2 to the reaction chamber 3, the five-way valve 7 is controlled to open the channel between the connecting pipe 8 and the air inlet pipe 10 and close other channels. At the same time, the three-way valve 11 is controlled to close the channel between the air inlet pipe 10 and the vent pipe 12 and release the limit on the air inlet pipe 10. At this time, the electric cylinder 34 is activated to push the baffle 35 and the connecting plate 36 downward, so that the baffle 35 moves to the surface of the connecting channel 32 and limits the connecting channel 32. When the connecting plate 36 moves downward, it will push the limit block 39 and the fixed block through the connecting rod 38. The fixed plate 40 moves downward synchronously, thereby pushing the second through hole 50 to the surface of the first flow channel 44. When the fixed plate 40 moves downward, it compresses the air inside the air chamber 48, thereby forcing the air inside the air chamber 48 into the interior of the slide groove 53 through the ventilation groove 54. This increases the air pressure inside the slide groove 53, pushing the slider 55 and the sealing block 56 upward, causing the sealing block 56 to slide out of the surface of the second flow channel 49, and moving the third through hole 57 to the surface of the second flow channel 49. Then, in conjunction with the piston movement of the piston plate 6 inside the piston chamber 4, the piston plate... When the flow chamber 6 rises, the suction chamber 401 generates a suction force. At this time, the sewage inside the purification chamber 2 is drawn into the second through hole 50 by the suction force, and exerts a pushing force on the surface of the second sealing plate 52. This pushes the second sealing plate 52 to rotate around the connection between the second spring plate 51 and the fixing plate 40, thereby releasing the restriction on the second through hole 50 and allowing the sewage to pass through the first flow channel 44 from the second through hole 50 into the suction chamber 401. During this process, the second filter element 47 filters the sewage entering the first flow channel 44. The active sludge in the sewage is trapped inside the purification chamber 2. When the piston plate 6 descends, it will squeeze the sewage in the water absorption chamber 401 into the third through hole 57 and apply a thrust to the surface of the third sealing plate 59, thereby pushing the third sealing plate 59 to rotate around the connection between the third spring plate 58 and the slider 55, thereby releasing the restriction on the third through hole 57, allowing the sewage to pass through the second flow channel 49 from the third through hole 57 into the interior of the reaction chamber 3. This process can be repeated multiple times to transport the sewage inside the purification chamber 2 to the interior of the reaction chamber 3.

[0050] Multiple solar panels 60 are installed on the top outer wall of the processing box 1, and a battery 61 adapted to the solar panels 60 is installed on the top outer wall of the processing box 1.

[0051] When in use, on a sunny day, the solar panel 60 can convert heat energy into electrical energy and charge the battery 61, enabling the battery 61 to provide energy for the operation of the hydraulic cylinder 5, the motor 23 and the electric cylinder 34, thereby reducing the operating cost of the device.

[0052] A treatment process for an ecological treatment equipment for rural domestic sewage includes the following steps:

[0053] S1: First, inject domestic sewage into the interior of purification chamber 2, and then add activated sludge into the sewage;

[0054] S2: Start hydraulic cylinder 5 to push piston plate 6 to make piston movement inside piston chamber 4, thereby drawing outside air into piston chamber 4 and aerating the sewage inside purification chamber 2.

[0055] S3: By controlling the five-way valve 7 and cooperating with the piston plate 6 to make piston movement inside the piston chamber 4, the gas generated during aeration is transported to the high-pressure gas separation membrane 13. Utilizing the difference in the permeation rate of different gases by the special polymer membrane, when carbon dioxide passes through the high-pressure gas separation membrane 13, the four-way valve 18 is controlled to pass carbon dioxide into the storage tank 17.

[0056] S4: The sludge discharge mechanism collects the impurities floating on the surface of the sewage, and then the piston plate 6 moves inside the piston chamber 4 to transport the sewage inside the purification chamber 2 to the inside of the reaction chamber 3.

[0057] S5: Start the air pump 15 and cooperate with the four-way valve 18 to transport the purified carbon dioxide in the storage tank 17 into the interior of the first aeration pipe 19, and aerate the sewage inside the reaction chamber 3, so that the purified carbon dioxide is mixed with the sewage, thereby consuming the chemoautotrophic nitrifying bacteria in the nitrification reaction as a "carbon source" in the biological denitrification process of sewage treatment.

[0058] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An ecological treatment equipment for rural domestic sewage, comprising a treatment tank (1), wherein the treatment tank (1) is provided with a purification chamber (2) and a reaction chamber (3), characterized in that: A piston chamber (4) is provided between the purification chamber (2) and the reaction chamber (3). An aeration assembly is provided on the inner wall of the piston chamber (4). The aeration assembly includes a slag discharge mechanism provided on the inner wall of the purification chamber (2). A recovery mechanism for treating the carbon dioxide generated during sewage aeration is provided on the treatment box (1). The recycling mechanism includes a hydraulic cylinder (5) installed on the processing tank (1). A piston plate (6) is fixedly connected to the outer wall of one end of the hydraulic cylinder (5). The piston plate (6) divides the piston chamber (4) into a water intake chamber (401) and an air intake chamber (402). A five-way valve (7) is installed on the inner wall of the processing tank (1). A connecting pipe (8) is installed on the outer wall of the five-way valve (7). A first air intake pipe (9) is installed on the outer wall of the five-way valve (7). An air inlet pipe (10) is installed on the top outer wall of the five-way valve (7). A three-way valve (11) is installed on the outer wall of the processing box (1). A vent pipe (12) is installed on the outer wall of the three-way valve (11). A high-pressure gas separation membrane (13) adapted to the vent pipe (12) is provided on the outer wall of the processing box (1). A gas storage tank (14) is installed on the outer wall of the high-pressure gas separation membrane (13). An air pump (15) is installed on the outer wall of the processing box (1). The air pump (15) is connected to the gas storage tank (14) through a vent pipe (16). A storage tank (17) adapted to the air pump (15) is provided on the outer wall of the processing box (1).

2. The rural domestic sewage ecological treatment equipment according to claim 1, characterized in that: The top outer wall of the five-way valve (7) is equipped with a second suction pipe (20), and the top outer wall of the five-way valve (7) is provided with a second aeration pipe (21) adapted to the purification chamber (2).

3. The rural domestic sewage ecological treatment equipment according to claim 1, characterized in that: A four-way valve (18) is installed on the outer wall of the ventilation pipe (16). A first aeration pipe (19) adapted to the reaction chamber (3) is provided on the outer wall of the four-way valve (18). An exhaust pipe (33) is installed on the outer wall of the four-way valve (18).

4. The rural domestic sewage ecological treatment equipment according to claim 1, characterized in that: The slag discharge mechanism includes a connecting shaft (22), which is installed inside the purification chamber (2). A motor (23) adapted to the connecting shaft (22) is provided on the outer wall of the treatment box (1). A drive wheel (24) is fixedly connected to the outer wall of the connecting shaft (22). A belt (25) is driven to the outer wall of the drive wheel (24). A connecting block (26) is fixedly connected to the outer wall of the belt (25). A scraper (27) is rotatably connected to the outer wall of the connecting block (26). The inner wall of the treatment box (1) is provided with a torsion spring (28) adapted to the scraper (27). The inside of the treatment box (1) is provided with a collection tank (29). The inner wall of the collection tank (29) is provided with a scraper (30) adapted to the scraper (27). The inside of the treatment box (1) is provided with a connecting channel (32) for connecting the collection tank (29) and the piston chamber (4). The inner wall of the piston chamber (4) is provided with a first flow channel (44) adapted to the purification chamber (2). The outer wall of the piston plate (6) is fixedly connected with a limiting plate (45).

5. The rural domestic sewage ecological treatment equipment according to claim 4, characterized in that: The inner wall of the collection tank (29) is equipped with a first filter element (31), and the outer wall of the processing box (1) is equipped with a switch door (46).

6. The rural domestic sewage ecological treatment equipment according to claim 4, characterized in that: An electric cylinder (34) is installed inside the processing box (1). A baffle (35) is fixedly connected to the outer wall of the electric cylinder (34). A connecting plate (36) is fixedly connected to the outer wall of the baffle (35). A through groove (37) adapted to the connecting channel (32) is provided on the outer wall of the connecting plate (36). A connecting rod (38) is fixedly connected to the outer wall of the connecting plate (36). A limit block (39) is fixedly connected to the outer wall of one end of the connecting rod (38). A fixing plate (40) is fixedly connected to the outer wall of the limit block (39). A first through hole (41) is opened on the outer wall of the fixing plate (40). (40) has a first spring plate (42) fixedly connected to its outer wall. The first spring plate (42) has a first sealing plate (43) adapted to the first through hole (41) on its outer wall. The first flow channel (44) has a second filter element (47) installed on its inner wall. The fixed plate (40) has a second through hole (50) on its outer wall. The fixed plate (40) has a second spring plate (51) fixedly connected to its outer wall. The second spring plate (51) has a second sealing plate (52) adapted to the second through hole (50) on its outer wall. The piston chamber (4) has a second flow channel (49) at one end away from the first flow channel (44).

7. The rural domestic sewage ecological treatment equipment according to claim 6, characterized in that: The processing box (1) has an air chamber (48) adapted to the fixed plate (40) on its inner wall. The processing box (1) has a chute (53) located at the position of the second flow channel (49) inside. The processing box (1) has a ventilation groove (54) for connecting the air chamber (48) and the chute (53) on its inner wall. The chute (53) has a slider (55) slidably connected to its inner wall. The slider (55) has a sealing block (56) fixedly connected to its outer wall. The slider (55) has a third through hole (57) on its outer wall. The slider (55) has a third spring plate (58) fixedly connected to its outer wall. The third spring plate (58) has a third sealing plate (59) adapted to the third through hole (57) on its outer wall.

8. The rural domestic sewage ecological treatment equipment according to claim 7, characterized in that: Multiple sets of solar panels (60) are installed on the top outer wall of the processing box (1), and a storage battery (61) adapted to the solar panels (60) is provided on the top outer wall of the processing box (1).

9. The treatment process of the rural domestic sewage ecological treatment equipment according to claim 1, and the rural domestic sewage ecological treatment equipment according to any one of claims 1-8, characterized in that: Includes the following steps: S1: First, inject domestic sewage into the purification chamber (2) and add activated sludge into the sewage; S2: Start the hydraulic cylinder (5) to push the piston plate (6) to make piston movement inside the piston chamber (4), thereby drawing external air into the piston chamber (4) and aerating the sewage inside the purification chamber (2); S3: By controlling the five-way valve (7) and cooperating with the piston plate (6) to make piston movement inside the piston chamber (4), the gas generated during aeration is transported to the high-pressure gas separation membrane (13). By utilizing the difference in the permeation rate of the special polymer membrane for different gases, when carbon dioxide passes through the high-pressure gas separation membrane (13), the four-way valve (18) is controlled to pass carbon dioxide into the storage tank (17). S4: The slag discharge mechanism collects the impurities floating on the surface of the sewage, and then the piston plate (6) moves inside the piston chamber (4) to transport the sewage inside the purification chamber (2) to the inside of the reaction chamber (3). S5: Start the air pump (15) and cooperate with the four-way valve (18) to transport the purified carbon dioxide in the storage tank (17) into the interior of the first aeration pipe (19) and aerate the sewage in the reaction chamber (3) so that the purified carbon dioxide is mixed with the sewage, thereby consuming the chemoautotrophic nitrifying bacteria in the nitrification reaction as a "carbon source" in the biological denitrification process of sewage treatment.

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