Anaerobic jar

Abstract

The utility model discloses an anaerobic jar, relates to wastewater treatment technical field, the anaerobic jar comprises a jar body and a water inlet structure, the water inlet structure comprises a water supply member and a plurality of arc-shaped pipes, the plurality of arc-shaped pipes are all arranged on the outer wall of the jar body along the axial direction of the jar body, and the plurality of arc-shaped pipes are all connected with the water supply member; a plurality of arc-shaped pipes are arranged in the tank body, a plurality of water outlet pieces are arranged on the arc-shaped pipes, one ends of the water outlet pieces are arranged in the tank body, the ends, in the tank body, of the water outlet pieces are obliquely arranged, and the inclination direction of the water outlet pieces is downwards inclined from the mounting ends of the water outlet pieces to the bottom of the tank body in the radial direction of the tank body; according to the scheme of the utility model, a plurality of layers of drainage structures are arranged on a part of the tank body structure close to the bottom of the tank body along the axial direction of the tank body structure, and the plurality of layers of drainage structures simultaneously drain water in the vertical direction in the actual reaction process, so that the movement of a refined sludge layer can be further promoted, and sewage can be in better contact with anaerobic sludge; therefore, a better reaction effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to an anaerobic tank. Background Technology

[0002] Wastewater treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscaping, medical care, and catering. More and more wastewater treatment equipment has emerged. Upflow anaerobic sludge bed reactors, as a primary biochemical method for treating high-concentration organic wastewater, feature high treatment load, good effluent quality, and low operating costs. In anaerobic tanks, wastewater is introduced to the bottom of the tank, and the water flows upwards at a certain velocity through the sludge bed and suspended sludge layer. The wastewater reacts fully with the anaerobic sludge, thereby degrading the organic matter in the wastewater and generating biogas for reuse. However, traditional anaerobic tanks mostly only have wastewater pipes at the bottom for effluent discharge. This method results in poor contact and reaction between the wastewater and the anaerobic sludge layer, making efficient reaction difficult and often failing to meet practical requirements. Utility Model Content

[0003] The main purpose of this invention is to propose an anaerobic tank that addresses the problem that most traditional anaerobic tanks simply have a sewage pipe installed at the bottom of the tank for effluent discharge. This method results in poor contact and reaction between sewage and the anaerobic sludge layer, making it difficult to achieve efficient reaction and often failing to meet practical requirements.

[0004] To achieve the above objectives, the anaerobic digester proposed in this utility model includes:

[0005] The tank body; and,

[0006] The water inlet structure includes a water supply component and multiple arc-shaped pipes. The multiple arc-shaped pipes are all arranged on the outer wall of the tank along the axial direction of the tank body, and the multiple arc-shaped pipes are all connected to the water supply component. The multiple arc-shaped pipes are provided with multiple water outlets. One end of each of the multiple water outlets is located inside the tank body. The end of each of the multiple water outlets inside the tank body is inclined, and its inclination direction is downward along the radial direction of the tank body from the installation end of the water outlet towards the bottom of the tank body.

[0007] In one embodiment, the tank body is provided with a plurality of evenly spaced through holes corresponding to the arc-shaped tube;

[0008] The water outlet component includes:

[0009] A fixed tube is installed on the through hole; and,

[0010] The water outlet pipe has one end connected to the fixed pipe. The water outlet pipe is inclined, and the inclination direction of the water outlet pipe is downward from the installation end of the water outlet pipe toward the bottom of the tank along the radial direction of the tank body. The water outlet pipe is equipped with multiple nozzles.

[0011] In one embodiment, a support rod is provided on the water outlet pipe, and one end of the support rod is inserted into the inner wall of the tank; and / or,

[0012] The outer wall of the anaerobic tank is also provided with multiple support frames corresponding to the multiple arc-shaped tubes.

[0013] In one embodiment, the water supply component includes a water supply device and a plurality of connecting pipes, the plurality of connecting pipes being respectively connected to a plurality of arc-shaped pipes, the other end of each of the plurality of connecting pipes being connected to the water supply device, the water supply device being used to supply water to the plurality of arc-shaped pipes through the plurality of connecting pipes, and each of the plurality of connecting pipes being provided with a control valve.

[0014] In one embodiment, the anaerobic tank further includes an overflow structure, the overflow structure comprising:

[0015] An overflow cavity is provided, wherein an inner shell portion is provided on the inner wall of the tank near its end, and the overflow cavity is formed between the inner shell portion and the inner wall of the tank; the inner shell portion is provided with a plurality of overflow holes for communicating with the inner cavity of the tank and the overflow cavity; and,

[0016] A wastewater treatment tank, wherein an external connection port is provided on the tank body corresponding to the position of the overflow cavity, and the wastewater treatment tank is connected to the external connection port.

[0017] In one embodiment, the overflow hole is configured as a trapezoidal hole, and the cross-section of the overflow hole at one end corresponding to the overflow cavity is larger than the cross-section of the overflow hole at one end corresponding to the inner cavity of the anaerobic tank.

[0018] In one embodiment, the top of the anaerobic tank is provided with a top cover, and the top cover is provided with an exhaust pipe and a feed pipe. One end of the exhaust pipe and the feed pipe are both connected to the inner cavity of the tank, and the extension length of the exhaust pipe in the inner cavity of the tank is less than the extension length of the feed pipe in the inner cavity of the tank.

[0019] In one embodiment, the anaerobic tank further includes a mixing component, the mixing component comprising:

[0020] The motor component is located on the top cover;

[0021] The disturbance component includes a rotating shaft and multiple stirring rods. The rotating shaft is rotatably mounted between the bottom of the tank and the top cover along the axis of the tank body. One end of the rotating shaft is located on the outside of the top cover and connected to the motor component. The multiple stirring rods are located at the lower end of the rotating shaft, corresponding to the multiple arc-shaped tubes.

[0022] In one embodiment, the stirring rod includes:

[0023] A rotating rod is positioned on the rotating shaft at the midpoint between the two arc-shaped tubes, and a spring is provided on the rotating rod.

[0024] A movable plate, sleeved on the rotating rod, and connected to one end of the spring member; and / or,

[0025] The rotating rod has an end face gear on its upward end, and the motor has a drive gear on its output end that is connected to the end face gear.

[0026] In one embodiment, a reinforcing frame is provided on the inner wall of the tank, and the rotating shaft is rotatably mounted on the reinforcing frame.

[0027] In this invention, a multi-layered drainage structure is provided along the axial direction on a portion of the tank structure near the bottom. One end of each drainage structure extends into the anaerobic sludge during use. During the actual reaction, the vertically multi-layered drainage structure drains water simultaneously, effectively dispersing the deeper sludge layer into smaller, more manageable units during effluent discharge. Compared to bottom-entry water, this method offers less resistance during discharge and facilitates sludge refinement. Furthermore, the multiple effluent outlets are angled towards the center of the tank, further promoting the movement of the refined sludge layer during discharge, allowing for better contact between the wastewater and the anaerobic sludge, thus achieving a more effective reaction. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0029] Figure 1 A schematic diagram of the overall structure of an embodiment of the anaerobic digester provided by this utility model;

[0030] Figure 2 for Figure 1 A magnified view of part A of the anaerobic tank provided in the image;

[0031] Figure 3 for Figure 1 The image provided shows a magnified view of part B of the anaerobic tank.

[0032] Explanation of icon numbers:

[0033] 100. Anaerobic tank; 1. Tank body; 11. Support frame; 12. Inner shell; 13. Through hole; 14. Reinforcing frame; 2. Water inlet structure; 21. Water supply component; 211. Water supply device; 212. Connecting pipe; 2121. Control valve; 22. Arc-shaped pipe; 221. Water outlet component; 2211. Fixed pipe; 2212. Water outlet pipe; 2212a. Nozzle; 2213. Support rod; 3. Overflow structure 31. Overflow chamber; 311. Overflow hole; 312. External connection port; 32. Sewage treatment tank; 4. Top cover; 41. Exhaust pipe; 42. Feed pipe; 5. Mixing component; 51. Motor component; 511. Drive gear; 52. Disturbing component; 521. Rotating shaft; 522. Stirring rod component; 5221. Rotating rod; 5221a. Spring component; 5221b. End face gear; 5222. Movable plate.

[0034] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0036] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0037] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0038] Wastewater treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscaping, medical care, and catering. More and more wastewater treatment equipment has emerged. Upflow anaerobic sludge bed reactors, as a primary biochemical method for treating high-concentration organic wastewater, feature high treatment load, good effluent quality, and low operating costs. In anaerobic tanks, wastewater is introduced to the bottom of the tank, and the water flows upwards at a certain velocity through the sludge bed and suspended sludge layer. The wastewater reacts fully with the anaerobic sludge, thereby degrading the organic matter in the wastewater and generating biogas for reuse. However, traditional anaerobic tanks mostly only have wastewater pipes at the bottom for effluent discharge. This method results in poor contact and reaction between the wastewater and the anaerobic sludge layer, making efficient reaction difficult and often failing to meet practical requirements.

[0039] This utility model proposes an anaerobic digester 100 to solve the above problems.

[0040] Please see Figures 1 to 3In one embodiment of this utility model, the anaerobic tank 100 includes a tank body 1 and a water inlet structure 2 disposed near the bottom end of the tank body 1. Typically, a high concentration of anaerobic sludge is stored at the bottom of the inner cavity of the tank body 1. The water inlet structure 2 is disposed within the anaerobic sludge at one end corresponding to the interior of the tank body 1. Wastewater is introduced into the anaerobic sludge from the end near the bottom of the tank body 1 through the water inlet structure 2, thereby dispersing the anaerobic sludge and allowing for sufficient contact and mass transfer between the wastewater and the anaerobic sludge, thus degrading various organic substances in the wastewater. Specifically, in this embodiment, the water inlet structure 2 specifically includes a water supply component 21 and multiple arc-shaped pipes 22. The multiple arc-shaped pipes 22 are arranged in a ring shape outside the arc-shaped sidewall near the lower end of the tank body 1, and are coaxially arranged with the tank body 1. The water supply component 21 is connected to the multiple arc-shaped pipes 22, thereby introducing wastewater into the multiple arc-shaped pipes 22. Multiple arc-shaped pipes 22 are arranged in multiple layers in the vertical direction, and each arc-shaped pipe 22 is provided with multiple water outlets 221. These water outlets 221 are evenly installed on the outer wall of the arc-shaped pipe 22 around its axis. One end of each water outlet 221 is located inside the tank body 1, thus forming a multi-layered water outlet structure on the inner wall of the tank body 1 near its bottom. In actual use, one end of each water outlet 221 is buried in high-concentration anaerobic sludge. Water enters simultaneously through multiple arc-shaped pipes 22, thereby dividing the anaerobic sludge into multiple layers in the vertical direction. The flushing action effectively disperses the anaerobic sludge, allowing it to mix thoroughly with the wastewater. To further enhance the effect of the multiple effluent outlets 221 on the anaerobic sludge, in this embodiment, the multiple effluent outlets 221 are also inclined, with their inclination direction along the radial direction of the tank 1 from the installation end of the effluent outlet 221 towards the bottom of the tank 1. With this arrangement, the angle of the wastewater spray is inclined towards the middle of the tank 1, which can further disperse the anaerobic sludge in the middle of the tank 1 and promote the movement of the anaerobic sludge inside the tank 1, achieving a better mixing effect and accelerating the degradation reaction of organic matter.

[0041] It is conceivable that, in the above embodiments, the water inlet pipes are all located on the outside of the tank body 1, which allows for better maintenance and replacement of the water inlet structure 2 during the actual maintenance of the entire structure. Simultaneously, an isolation plate is provided on the outside of the tank body 1 corresponding to the multiple arc-shaped pipes 22, which can protect the multiple arc-shaped pipes 22.

[0042] The tank body 1 has a plurality of evenly spaced through holes 13 corresponding to the arc-shaped pipe 22, for installing multiple water outlet components 221 on the same arc-shaped pipe 22. Each water outlet component 221 specifically includes a fixing pipe 2211 and a water outlet pipe 2212. During installation, the fixing pipe 2211 is first installed on the through hole 13, connecting the inner and outer sides of the tank body 1. Then, the water outlet pipe 2212 is installed at the end of the fixing pipe 2211 corresponding to the inside of the tank body 1. The water outlet pipe 2212 is inclined downwards from the installation end towards the bottom of the tank body 1 along the radial direction of the tank body 1. The outer ends of the plurality of fixing pipes 2211 are all connected to the... The arc-shaped pipes 22 are connected. During the actual water intake process, the sewage in the arc-shaped pipes 22 enters the fixed pipe 2211 and the outlet pipe 2212, and is sprayed outward through multiple nozzles 2212a on the outlet pipe 2212. During this process, because the water is discharged at an angle from the multiple nozzles 2212a of the multiple outlet pipes 2212, the anaerobic sludge can be dispersed simultaneously from the periphery of the tank 1 towards its axis. The simultaneous operation of multiple outlet pipes 2212 can efficiently disperse the anaerobic sludge, thereby allowing the anaerobic sludge to react better with the sewage. Considering the installation strength of the outlet pipe 2212, a support rod 2213 is provided on the outlet pipe 2212. One end of the support rod 2213 is connected to the inner wall of the tank 1, thereby increasing the installation strength of the outlet pipe 2212 on the inner wall of the tank 1. Meanwhile, multiple support frames 11 are provided on the outer wall of the tank body 1, and multiple arc-shaped tubes 22 are detachably installed on the support frames 11.

[0043] Specifically, the water supply component 21 includes a water supply device 211 and multiple connecting pipes 212. The multiple connecting pipes 212 are respectively connected to multiple arc-shaped pipes 22. The other end of each of the multiple connecting pipes 212 is connected to the water supply device 211, and each of the multiple connecting pipes 212 is equipped with a control valve 2121. The water supply device 211 can be configured as a separate integrated water supply structure, such as a pump body. Its output end is connected to the multiple connecting pipes 212 through a liquid separator. The flow rate of the multiple connecting pipes 212 is controlled by the control valves 2121. Generally speaking, the anaerobic sludge at the bottom of the tank 1 is relatively thick, so the flow rate of the multiple connecting pipes 212 near the bottom should be set to be relatively high. During the upward flow of water, the sewage can be fully reacted. Correspondingly, the flow rate of the multiple connecting pipes 212 near the top of the anaerobic sludge can be controlled to be relatively small, thereby avoiding insufficient reaction of the sewage. The water supply device 211 can also be configured to supply sewage with multiple separate pumps. When using separate pumps to supply sewage, the flow control mentioned above is still achieved through multiple control valves 2121, so that the sewage can fully react with the anaerobic sludge and improve the sewage treatment effect.

[0044] After the wastewater and anaerobic sludge have fully reacted, the mixture of wastewater and sludge needs to be treated. This is achieved using an overflow structure 3 to discharge the mixture from inside the tank 1. Specifically, the overflow structure 3 includes an overflow chamber 31 and a wastewater treatment tank 32. An inner shell portion 12 is provided on the inner wall of the tank 1 near its end. The overflow chamber 31 is formed between the inner shell portion 12 and the inner wall of the tank 1. During actual discharge, cleaning water can be introduced into the tank 1 through the water supply device 211. The mixture inside the tank 1 enters the overflow chamber 31 through the overflow hole 311, and then flows into the wastewater treatment tank 32 through the external connection port 312 for sterilization before being discharged. This flushing process needs to continue for a period of time to remove as much sludge as possible from inside the tank 1 through the cleaning process. The wastewater treatment tank 32 should have sterilization and acid-base balancing functions. There are many wastewater treatment tanks 32 with these functions, so we will not go into details here. After the mixture is treated by the wastewater treatment tank 32, it is discharged to minimize the impact on the external environment.

[0045] In order to minimize the risk of blockage in the overflow hole 311 during the sewage discharge process, in this embodiment, the overflow hole 311 is designed as a trapezoidal hole. Specifically, the cross-section of the end of the overflow hole 311 corresponding to the overflow cavity 31 is larger than the cross-section of the end of the overflow hole 311 corresponding to the inner cavity of the anaerobic tank 100. During actual sewage discharge, after the sewage enters the smaller end face of the overflow hole 311, the resistance it encounters during its movement is greatly reduced, thus making its movement at the overflow hole 311 smoother.

[0046] The wastewater inside the tank 1 reacts with the high-concentration anaerobic sludge to release a large amount of biogas. The released biogas rises inside the tank 1 to the top cover 4 and is then discharged from the tank 1 through the exhaust pipe 41 for centralized collection. Additionally, the top cover 4 is equipped with an inlet pipe 42. During actual use, material can be discharged through the inlet pipe 42, and an acid-base balancer can be added through the inlet pipe 42 to balance the acidity and alkalinity of the material inside the tank 1. In this embodiment, one end of the exhaust pipe 41 is positioned close to the inside of the top cover 4 for better biogas collection.

[0047] To enhance the mixing effect of wastewater and anaerobic sludge, in this embodiment, a mixing component 5 is also provided on the tank 1. The mixing component 5 mainly includes a motor component 51 and agitator components 52. A rotating shaft 521 is installed along the axis of the tank 1, with its upward end located on the outside of the top cover 4. It is connected to the motor component 51 through a spring component 5221b and a drive gear 511. The motor component 51 drives the rotating shaft 521 to rotate, and the rotating shaft 521 drives multiple agitator components 522 to agitate the anaerobic sludge located at the bottom of the tank 1, thereby further increasing the reaction effect between wastewater and anaerobic sludge.

[0048] To further enhance the mixing effect of the stirring rod 522, in this embodiment, a spring 5221a is provided on the rotating rod 5221, with one end of the spring 5221a connected to the movable plate 5222. During actual operation, the motor 51 operates with variable speed output. As the rotating shaft 521 drives the rotating rod 5221 to rotate at varying speeds, the spring 5221a can drive the movable plate 5222 to move along the axial direction of the rotating rod 5221, thereby strengthening the mixing effect of the wastewater and anaerobic sludge.

[0049] In addition, to ensure the installation effect of the rotating shaft 521, a reinforcing frame 14 is provided on the inner wall of the tank body 1. The rotating shaft 521 is partially rotatably mounted on the reinforcing frame 14. The number of reinforcing frames 14 is at least two, which are arranged along the axial direction of the tank body 1, and together they rotate the rotating shaft 521 to increase the stability of the rotating shaft 521 during movement.

[0050] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An anaerobic digester, characterized in that, include: Tank body; as well as, The water inlet structure includes a water supply component and multiple arc-shaped pipes. The multiple arc-shaped pipes are all arranged on the outer wall of the tank along the axial direction of the tank body, and the multiple arc-shaped pipes are all connected to the water supply component. The multiple arc-shaped pipes are provided with multiple water outlets. One end of each of the multiple water outlets is located inside the tank body. The end of each of the multiple water outlets inside the tank body is inclined, and its inclination direction is downward along the radial direction of the tank body from the installation end of the water outlet towards the bottom of the tank body.

2. The anaerobic digester as described in claim 1, characterized in that, The tank body is provided with a plurality of evenly spaced through holes corresponding to the arc-shaped tube; The water outlet component includes: A fixed tube is installed on the through hole; and, The water outlet pipe has one end connected to the fixed pipe. The water outlet pipe is inclined, and the inclination direction of the water outlet pipe is downward from the installation end of the water outlet pipe toward the bottom of the tank along the radial direction of the tank body. The water outlet pipe is equipped with multiple nozzles.

3. The anaerobic digester as described in claim 2, characterized in that, The water outlet pipe is equipped with a support rod, one end of which is connected to the inner wall of the tank; and / or, The outer wall of the anaerobic tank is also provided with multiple support frames corresponding to the multiple arc-shaped tubes.

4. The anaerobic digester as described in claim 1, characterized in that, The water supply component includes a water supply device and multiple connecting pipes. The multiple connecting pipes are respectively connected to multiple arc-shaped pipes. The other end of each of the multiple connecting pipes is connected to the water supply device. The water supply device is used to supply water to the multiple arc-shaped pipes through the multiple connecting pipes, and each of the multiple connecting pipes is equipped with a control valve.

5. The anaerobic digester as described in claim 1, characterized in that, The anaerobic tank also includes an overflow structure, which comprises: An overflow cavity is provided, wherein an inner shell portion is provided on the inner wall of the tank near its end, and the overflow cavity is formed between the inner shell portion and the inner wall of the tank; the inner shell portion is provided with a plurality of overflow holes for communicating with the inner cavity of the tank and the overflow cavity; and, A wastewater treatment tank, wherein an external connection port is provided on the tank body corresponding to the position of the overflow cavity, and the wastewater treatment tank is connected to the external connection port.

6. The anaerobic digester as described in claim 5, characterized in that, The overflow hole is configured as a trapezoidal hole, and the cross-section of the overflow hole at one end corresponding to the overflow cavity is larger than the cross-section of the overflow hole at one end corresponding to the inner cavity of the anaerobic tank.

7. The anaerobic digester as described in claim 1, characterized in that, The anaerobic tank is provided with a top cover, and the top cover is provided with an exhaust pipe and a feed pipe. One end of the exhaust pipe and the feed pipe are both connected to the inner cavity of the tank, and the extension length of the exhaust pipe in the inner cavity of the tank is less than the extension length of the feed pipe in the inner cavity of the tank.

8. The anaerobic digester as described in claim 7, characterized in that, The anaerobic digester also includes a mixing component, which comprises: The motor component is located on the top cover; The disturbance component includes a rotating shaft and multiple stirring rods. The rotating shaft is rotatably mounted between the bottom of the tank and the top cover along the axis of the tank body. One end of the rotating shaft is located on the outside of the top cover and connected to the motor component. The multiple stirring rods are located at the lower end of the rotating shaft, corresponding to the multiple arc-shaped tubes.

9. The anaerobic digester as described in claim 8, characterized in that, The stirring rod includes: A rotating rod is positioned on the rotating shaft at the midpoint between the two arc-shaped tubes, and a spring is provided on the rotating rod. A movable plate, sleeved on the rotating rod, and connected to one end of the spring member; and / or, The rotating rod has an end face gear on its upward end, and the motor has a drive gear on its output end that is connected to the end face gear.

10. The anaerobic digester as described in claim 9, characterized in that, The inner wall of the tank is provided with a reinforcing frame, and the rotating shaft is rotatably mounted on the reinforcing frame.

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