Efficient anaerobic reaction tank

Abstract

The utility model relates to the field of sewage treatment devices, and particularly discloses a high-efficiency anaerobic reaction tank which comprises a reaction tank main body, the reaction tank main body is arranged underground, a ventilation pipe is arranged on the reaction tank main body, and one end, far away from the reaction tank main body, of the ventilation pipe extends out of the ground. The anaerobic tank has the effect of reducing the space occupied by the anaerobic tank.

Description

Technical Field

[0001] The present application relates to the field of sewage treatment equipment, and in particular to a high-efficiency anaerobic reaction tank. Background Art

[0002] The anaerobic tank is a process equipment for removing ammonia nitrogen. It mainly removes harmful substances through the growth and oxidation degradation of anaerobic bacteria, so that the wastewater meets the discharge standards. The advantage of anaerobic digestion is that organic matter produces energy after digestion, and the residue can be used as fertilizer. Therefore, anaerobic digestion is currently used in many fields such as waste treatment, such as industrial wastewater treatment, urban garbage treatment, and potential energy development and use as fuel and power, and large-scale anaerobic digestion plants have been established.

[0003] The anaerobic process can be divided into the hydrolysis stage, the acidification stage and the methanogenesis stage. The hydrolysis process is relatively slow and is affected by many factors. It is the rate-limiting stage of anaerobic degradation. Therefore, the anaerobic reaction takes a long time, generally seven to ten days. Some communities or villages use anaerobic reaction tanks when treating domestic sewage. Due to the large amount of sewage treatment, the anaerobic reaction takes a long time, so the anaerobic tanks are often large in size and take up more space. Utility Model Content

[0004] In order to reduce the space occupied by the anaerobic tank, the present application provides a high-efficiency anaerobic reaction tank.

[0005] The present application provides a high-efficiency anaerobic reaction tank adopts the following technical solution:

[0006] A high-efficiency anaerobic reaction pool comprises a reaction pool body, wherein the reaction pool body is arranged underground and a ventilation pipe is arranged on the reaction pool body, wherein one end of the ventilation pipe away from the reaction pool body extends out from the ground.

[0007] By adopting the above technical solution, since the reaction tank body is arranged below the ground, the occupied space can be greatly reduced. The saved space can be used to place other equipment or for other purposes, thus being more practical.

[0008] Optionally, the reaction tank body includes a regulating tank, a reaction tank and a precipitation tank which are arranged in sequence, and connecting pipes are provided between the regulating tank and the reaction tank and between the reaction tank and the precipitation tank, and a first pump body is provided on the connecting pipes.

[0009] By adopting the above technical solution, the main body of the reaction tank includes three tanks, which adjust the pH value of the sewage, perform anaerobic reaction and sedimentation in turn. The residence time of the sewage in the tank is easy to control, which helps to improve the treatment effect of the sewage.

[0010] Optionally, an inspection hole is provided on the ground at the top of the reaction tank body, and one end of the inspection hole away from the ground extends to the outer wall of the reaction tank body.

[0011] By adopting the above technical solution, it is convenient to inspect and repair the tank surface and its equipment, thereby ensuring the normal use of the reaction pool and extending its service life.

[0012] Optionally, a second pump body is provided on the sedimentation tank, a microbial filter bed is provided at one end of the second pump body away from the sedimentation tank, a water collection well is provided at one end of the microbial filter bed, a return pipe is connected to the water collection well, and the end of the return pipe away from the water collection well is connected to the regulating tank.

[0013] By adopting the above technical scheme, the microbial filter bed uses porous carriers and high-efficiency microbial preparations to fix the functional microbial flora on the surface of the carrier and inside the pores to form a stable biofilm. When sewage flows through the carrier, the organic pollutants in the sewage can be further degraded under the joint action of multiple bacteria, thereby obtaining relatively pure water. The purified water then flows into the regulating tank through the reflux pipe, which can reduce the concentration of organic pollutants in the regulating tank, making the pH value easier to adjust and placing the bacteria in a suitable environment, thereby ensuring the sewage treatment efficiency.

[0014] Optionally, a grille well is provided on the side of the regulating tank away from the reaction tank, the grille well is provided below the ground, a liquid outlet is provided on the side wall of the grille well close to the bottom, the liquid outlet is connected to the interior of the regulating tank, and a grille is provided at the liquid outlet.

[0015] By adopting the above technical solution, the grid can filter the sewage entering the regulating tank and filter out the solid debris therein, thereby reducing the solid debris entering the regulating tank.

[0016] Optionally, a collecting box is provided on one side of the grille close to the bottom wall of the grille well, the opening of the collecting box faces the opening of the grille well, and the collecting box is slidably disposed in the grille well along the height direction of the grille well.

[0017] By adopting the above technical solution, the solid debris filtered out by the grille can fall into the collection box, and the collection box can be taken out regularly and the solid debris inside can be emptied, making the collection and cleaning process of the solid debris easier and avoiding the accumulation of debris at the bottom of the grille well, causing the grille to be blocked and affecting the flow of sewage.

[0018] Optionally, a plurality of rotating rods are rotatably arranged in the reaction tank, the rotating rods are provided with blades, and the reaction tank is provided with a driving assembly for driving the rotating rods to rotate.

[0019] By adopting the above technical solution, the driving component drives the rotating rod to rotate, and the rotating rod drives the blades to rotate, so that the sewage and bacteria in the reaction tank can be stirred, making the mixing more complete, thereby ensuring the degradation effect of organic matter in the sewage, accelerating the degradation rate, and making the process more efficient.

[0020] Optionally, the driving assembly includes a rotating power member, a driving gear, a transmission rack and a driven gear, the rotating power member is arranged on the reaction tank, the driving gear is arranged at the output end of the rotating power member, the transmission rack is slidably arranged on the reaction tank, the driven gear is provided with multiple driven gears and each rotating rod is coaxially fixedly connected with a driven gear, and the driving gear and the driven gear are both meshed with the transmission rack.

[0021] By adopting the above technical solution, the rotating power part drives the transmission rack to slide back and forth through the driving gear, and the sliding of the transmission rack can drive multiple driven gears to rotate synchronously, thereby causing the blades to rotate. The structure is simple, stable and reliable.

[0022] Optionally, a circulation pump is provided on the sedimentation tank, and one end of the circulation pump away from the sedimentation tank is connected to the interior of the regulating tank.

[0023] By adopting the above technical solution, the circulating pump can transport the sludge in the sedimentation tank to the regulating tank, thereby reducing the amount of sludge and bacterial strains in the regulating tank and ensuring the sewage treatment effect of the regulating tank.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. The main body of the reaction tank is set below the ground, thus reducing the occupied space. The saved space can be used for other purposes, making it more practical.

[0026] 2. The setting of the inspection hole makes it more convenient to inspect the tank surface and its equipment, which is conducive to the normal operation of the reaction pool and extends its service life.

[0027] 3. The second pump body transports the initially treated sewage to the microbial filter bed. The microbial filter bed treats the sewage again and transports relatively pure water to the regulating tank, which can reduce the concentration of organic matter in the regulating tank and is beneficial to the adjustment of pH value. Therefore, the reaction tank can treat sewage with a high concentration of organic pollutants and has a strong treatment capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application;

[0029] Figure 2 is a top view of Example 1 of the present application;

[0030] Figure 3is a schematic diagram of the structure of the grid well in Example 1 of the present application;

[0031] Figure 4 It is a cross-sectional view of Example 2 of the present application.

[0032] Figure numerals: 1. ground; 2. reaction tank body; 21. adjustment tank; 22. reaction tank; 221. three-dimensional elastic filler; 23. sedimentation tank; 3. ventilation pipe; 4. connecting hole; 5. connecting pipe; 6. first pump body; 7. inspection hole; 71. inspection well; 711. cover plate; 8. second pump body; 9. microbial filter bed; 10. water collection well; 11. third pump body; 12. reflux pipe; 13. grille well; 131. liquid outlet; 1311. grille; 132. liquid inlet; 14. collecting box; 141. water filter hole; 15. rotating rod; 151. blade; 16. driving assembly; 161. rotating power part; 162. driving gear; 163. transmission rack; 164. driven gear; 17. circulating pump. DETAILED DESCRIPTION

[0033] The present application is further described in detail below in conjunction with the accompanying drawings.

[0034] Example 1

[0035] The present application embodiment discloses a high-efficiency anaerobic reaction tank. Figure 1 The high-efficiency anaerobic reaction tank includes a reaction tank body 2 and a ventilation pipe 3 arranged on the reaction tank body 2. The reaction tank body 2 is buried underground, and the ventilation pipe 3 is connected to the top of the reaction tank body 2, and the top of the ventilation pipe 3 extends from the ground 1. Therefore, while ensuring the capacity of the reaction tank, the space occupied by the reaction tank body 2 is greatly reduced. The setting of the ventilation pipe 3 can discharge gases such as carbon dioxide and methane generated by the reaction, thereby avoiding safety hazards caused by excessive pressure in the reaction tank body 2.

[0036] The reaction tank body 2 includes a regulating tank 21, a reaction tank 22 and a sedimentation tank 23 which are arranged in sequence. The regulating tank 21, the reaction tank 22 and the sedimentation tank 23 are all columnar tanks with the same length direction, and the length direction is horizontally arranged, and the adjacent tanks are connected to each other. The regulating tank 21 is mainly used to adjust the pH value of the sewage, and the inlet end of the regulating tank 21 is connected to the sewage pipe network in the village. Sludge is arranged in the regulating tank 21 and the reaction tank 22. The sludge contains a large amount of anaerobic bacteria, which can produce anaerobic reactions with the sewage to treat the sewage. A three-dimensional elastic filler 221 is also arranged in the reaction tank 22. The silk strips of the three-dimensional elastic filler 221 are arranged in a three-dimensional uniform radiation state, and can be stretched and spread in an all-round and uniform manner in the effective area, so that the air, water and biofilm are fully mixed and contacted and exchanged. Therefore, the three-dimensional elastic filler 221 is used as a biological carrier for treating sewage, which can increase the reaction rate. The sedimentation tank 23 is used to precipitate the sewage that has been initially treated, so that the relatively clean water floats on the upper layer, which is convenient for subsequent treatment. A connecting hole 4 is provided on the top of the regulating tank 21, the reaction tank 22 and the sedimentation tank 23. A connecting pipe 5 is provided between the connecting hole 4 on the regulating tank 21 and the connecting hole 4 on the reaction tank 22, and between the connecting hole 4 on the reaction tank 22 and the connecting hole 4 on the sedimentation tank 23. One end of the connecting pipe 5 that penetrates the connecting hole 4 is located at the bottom of the tank body. A first pump body 6 is installed on the connecting pipe 5, so that after the first pump body 6 is started, the sewage can flow from the regulating tank 21 to the reaction tank 22, and then from the reaction tank 22 to the sedimentation tank 23.

[0037] In order to further improve the effect of sewage treatment, refer to Figure 2 A second pump body 8 is provided on the sedimentation tank 23. The inlet end of the second pump body 8 is connected to the interior of the sedimentation tank 23. The outlet end of the second pump body 8 is connected to a microbial filter bed 9 through a pipeline. The microbial filter bed 9 uses a porous carrier and a high-efficiency microbial preparation to fix the functional microbial flora on the surface of the carrier and inside the pores to form a stable biofilm. Therefore, the second pump body 8 sends the treated sewage to the microbial filter bed 9, and the microbial filter bed 9 can degrade the sewage again to further reduce the content of organic matter in the sewage. The outlet end of the microbial filter bed 9 is connected to a water collection well 10. After the microbial filter bed 9 treats the sewage, the treated water can be discharged into the water collection well 10. The water collection well 10 can collect the treated water, and the water at this time is relatively clean.

[0038] A third pump body 11 is arranged at the bottom of the water collection well 10, and the inlet end of the third pump body 11 is connected to the interior of the water collection well 10, and the outlet end of the third pump body 11 is connected to a return pipe 12, and the end of the return pipe 12 away from the third pump body 11 is connected to the interior of the regulating tank 21. Therefore, the third pump body 11 can transport the treated relatively clean water to the regulating tank 21, thereby reducing the organic matter concentration of the sewage in the regulating tank 21, making the pH value easier to adjust, thereby ensuring the treatment effect of the sewage and helping to improve the sewage treatment efficiency.

[0039] The sewage moves from the regulating tank 21 to the reaction tank 22, and then moves from the reaction tank 22 to the sedimentation tank 23, which will drive part of the sludge to move together, thereby reducing the sludge in the regulating tank 21 and the reaction tank 22, thereby reducing the number of bacteria, affecting the pH adjustment effect and the sewage treatment effect. In order to weaken this effect, a circulating pump 17 is provided on the sedimentation tank 23. The circulating pump 17 is a sludge pump. The inlet of the circulating pump 17 is connected to the sedimentation tank 23, and the outlet of the circulating pump 17 is connected to the inside of the regulating tank 21. Therefore, the circulating pump 17 can transport the sludge accumulated at the bottom of the sedimentation tank 23 to the regulating tank 21, so as to ensure the sewage treatment effect of the regulating tank 21.

[0040] Since the reaction tank body 2 is set underground, it is inconvenient to maintain the equipment such as pipes and pumps on the surface of the tank. In order to facilitate the maintenance of the equipment on the surface of the tank, inspection holes 7 are opened on the ground 1 at the top of the regulating tank 21, the reaction tank 22 and the precipitation tank 23, and there are two inspection holes 7 corresponding to each tank. The axis of the inspection hole 7 is vertical, and an inspection well 71 is set in the inspection hole 7. The bottom of the inspection well 71 extends to the top of the tank; a cover plate 711 is set on the top of the inspection well 71, and the cover plate 711 is used to close the inspection well 71. The cover plate 711 can be opened during maintenance. In order to make the overall structure more compact, the number of ventilation pipes 3 is the same as the number of inspection wells 71, and each ventilation pipe 3 is set in a inspection well 71.

[0041] Reference Figure 3In addition to the high content of organic matter in domestic sewage, it often contains a large amount of solid impurities. After the solid impurities enter the reaction tank body 2, they are easily accumulated and difficult to be discharged, which affects the treatment effect of the sewage. Therefore, a grille well 13 is provided at the inlet end of the regulating tank 21 to filter out solid impurities. The grille well 13 is arranged below the ground 1, and the grille well 13 is arranged vertically. The opening of the grille well 13 faces upward, and a baffle is provided at the opening at the top of the grille well 13. A liquid inlet 132 is provided at the bottom of the grille well 13 away from the regulating tank 21. The liquid inlet 132 is connected to the sewage pipe network. A liquid outlet 131 is provided at the bottom of the grille well 13 close to the regulating tank 21. The liquid outlet 131 and the regulating tank 21 are connected by a pipeline. A grille 1311 is installed at the liquid outlet 131, so that the grille 1311 can block solid impurities and reduce the solid impurities entering the regulating tank 21.

[0042] In order to facilitate the collection and cleaning of solid debris accumulated in the grille well 13, a collection box 14 is provided at the bottom of the grille 1311 in the grille well 13. The opening of the collection box 14 faces upward, and the collection box 14 can collect debris. The collection box 14 is slidably arranged in the grille well 13 along the height direction of the grille well 13, so that it is convenient to take out the collection box 14 and empty the debris. A water filter hole 141 is provided at the bottom of the collection box 14. When the collection box 14 is moved upward, the water filter hole 141 can filter out the water inside the collection box 14, reducing the weight of the collection box 14, thereby facilitating the collection box 14 to be taken out.

[0043] The implementation principle of Example 1 is as follows: the sewage in the sewage treatment network first flows into the grid well 13, and the solid debris in the sewage is filtered out and falls into the collection box 14; then the sewage enters the regulating tank 21 to adjust the pH value of the sewage so that the bacteria are in a more suitable environment to facilitate the treatment of the sewage; then, the sewage enters the reaction tank 22, and the sewage stays in the reaction tank 22 for a period of time, and an anaerobic reaction occurs between the anaerobic bacteria in the reaction tank 22 and the organic matter in the sewage, thereby degrading the organic matter; then the sewage after preliminary treatment enters the sedimentation tank 23, and after sedimentation for a period of time, the second pump body 8 transports the sewage to the microbial filter bed 9, and the microorganisms in the microbial filter bed 9 re-treat the organic matter in the sewage, and the treated water flows into the collection well 10, and then the third pump body 11 transports the cleaner water in the collection well 10 to the regulating tank 21, reduces the concentration of organic matter in the regulating tank 21, and makes the pH value easier to adjust, which helps to improve the sewage treatment efficiency.

[0044] Example 2

[0045] Reference Figure 4The difference between this embodiment and embodiment 1 is that in the reaction tank 22 of this embodiment, three rotating rods 15 are connected and rotated around a vertical axis. The length of the rotating rod 15 is set in the vertical direction. The three rotating rods 15 are evenly spaced along the length direction of the reaction tank 22. A plurality of blades 151 are arranged on the rotating rod 15. The reaction tank 22 is provided with a driving component 16 for driving the rotating rod 15 to rotate. The driving component 16 drives the rotating rod 15 to rotate, and the blades 151 on the rotating rod 15 rotate accordingly, thereby stirring the sewage and bacterial strains in the reaction tank 22, making the mixing more uniform, thereby helping to improve the sewage treatment effect.

[0046] The driving assembly 16 includes a rotating power member 161, a driving gear 162, a transmission rack 163 and a driven gear 164. The rotating power member 161 is a motor, which is fixedly connected to the outer wall of the reaction tank 22 by bolts. The output shaft of the rotating power member 161 is vertically downward and extends into the interior of the reaction tank 22; the driving gear 162 is coaxially fixedly connected to the output end of the rotating power member 161; the transmission rack 163 is slidably arranged on the inner wall of the top of the reaction tank 22 along the length direction of the reaction tank 22, and the transmission rack 163 is meshed with the driving gear 162, so the rotation of the driving gear 162 can drive the transmission rack 163 to slide. There are three driven gears 164, and the top of each rotating rod 15 is coaxially fixedly connected to a driven gear 164. The driven gear 164 and the driving gear 162 are located on the same side of the transmission rack 163, and the driven gear 164 is meshed with the transmission rack 163. Therefore, the reciprocating sliding of the transmission rack 163 can drive the driven gear 164 to reciprocate, thereby driving the blade 151 to rotate and stir the sewage.

[0047] The implementation principle of Example 2 is as follows: when an anaerobic reaction occurs in the reaction tank 22, the rotating power member 161 drives the driving gear 162 to rotate back and forth, the driving gear 162 drives the transmission rack 163 to slide back and forth, and the transmission rack 163 drives the driven gear 164 to rotate back and forth, thereby causing the three rotating rods 15 to rotate back and forth, causing the blades 151 to rotate, and stirring the sewage and bacterial strains in the reaction tank 22, so that the mixing is more complete and the sewage treatment efficiency is higher.

[0048] The above are optional embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high-efficiency anaerobic reaction tank, characterized in that: The invention comprises a reaction pool body (2), wherein the reaction pool body (2) is arranged underground, a ventilation pipe (3) is arranged on the reaction pool body (2), and an end of the ventilation pipe (3) away from the reaction pool body (2) extends out from the ground (1); The reaction tank body (2) comprises a regulating tank (21), a reaction tank (22) and a precipitation tank (23) which are arranged in sequence, a connecting pipe (5) is arranged between the regulating tank (21) and the reaction tank (22) and between the reaction tank (22) and the precipitation tank (23), and a first pump body (6) is arranged on the connecting pipe (5); The sedimentation tank (23) is provided with a second pump body (8), and a microbial filter bed (9) is provided at one end of the second pump body (8) away from the sedimentation tank (23), and a water collection well (10) is provided at one end of the microbial filter bed (9), and a return pipe (12) is connected to the water collection well (10), and the end of the return pipe (12) away from the water collection well (10) is connected to the regulating tank (21).

2. A high-efficiency anaerobic reaction tank according to claim 1, characterized in that: An inspection hole (7) is provided on the ground (1) at the top of the reaction tank body (2), and an end of the inspection hole (7) away from the ground (1) extends to the outer wall of the reaction tank body (2).

3. A high-efficiency anaerobic reaction tank according to claim 1, characterized in that: A grid well (13) is provided on a side of the regulating tank (21) away from the reaction tank (22); the grid well (13) is provided below the ground (1); a liquid outlet (131) is provided on a side wall of the grid well (13) close to the bottom; the liquid outlet (131) is connected to the inside of the regulating tank (21); and a grid (1311) is provided at the liquid outlet (131).

4. A high-efficiency anaerobic reaction tank according to claim 3, characterized in that: A collecting box (14) is provided on one side of the grille (1311) close to the bottom wall of the grille well (13); the opening of the collecting box (14) faces the opening of the grille well (13); and the collecting box (14) is slidably arranged in the grille well (13) along the height direction of the grille well (13).

5. The high-efficiency anaerobic reaction tank according to claim 1, characterized in that: A plurality of rotating rods (15) are rotatably arranged in the reaction tank (22), the rotating rods (15) are provided with blades (151), and the reaction tank (22) is provided with a driving assembly (16) for driving the rotating rods (15) to rotate.

6. A high-efficiency anaerobic reaction tank according to claim 5, characterized in that: The driving assembly (16) comprises a rotating power member (161), a driving gear (162), a transmission rack (163) and a driven gear (164); the rotating power member (161) is arranged on the reaction tank (22); the driving gear (162) is arranged at the output end of the rotating power member (161); the transmission rack (163) is slidably arranged on the reaction tank (22); a plurality of driven gears (164) are provided, and each rotating rod (15) is coaxially fixedly connected to a driven gear (164); and the driving gear (162) and the driven gear (164) are both meshed with the transmission rack (163).

7. A high-efficiency anaerobic reaction tank according to claim 1, characterized in that: The precipitation tank (23) is provided with a circulation pump (17), and one end of the circulation pump (17) away from the precipitation tank (23) is connected to the interior of the regulating tank (21).

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