A multi-stage upflow self-circulation anaerobic reaction device

Abstract

The utility model relates to sewage treatment technical field provides a multistage upflow type self -circulation anaerobic reaction device, include: main part, the main part is the canned structure of vertical type, along the flow direction of water body is provided with main reaction chamber, secondary reaction chamber, flow channel, tertiary reaction chamber and setting chamber in proper order in main part, reflux hopper, set up in secondary reaction chamber and / or setting chamber, to with secondary reaction chamber and / or setting chamber in water body reflux to main reaction chamber, anti -turbulence board, set up in the mouth of hopper of reflux hopper, the top of anti -turbulence board is higher than the mouth of hopper of reflux hopper, anti -turbulence board divides the mouth of hopper of reflux hopper into many dry independent water area. This multistage upflow type self -circulation anaerobic reaction device, is provided with anti -turbulence board at the mouth of hopper of reflux hopper to avoid the splash of water of reflux of different positions to meet after impact to produce turbulence, make secondary reaction chamber and / or setting chamber in sludge layer more stable, be favorable to the improvement treatment effect.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a multi-stage upflow self-circulating anaerobic reactor. Background Technology

[0002] Currently, the main equipment for anaerobic treatment of high-concentration wastewater is the upflow anaerobic sludge bed reactor. This is a highly efficient anaerobic bioreactor, consisting of an inlet pipe, reactor body, three-phase separator, gas collection chamber, and outlet pipe. Wastewater enters from the bottom, contacts the sludge bed settled at the bottom, and is then decomposed into biogas by anaerobic microorganisms, simultaneously producing sludge. Its high organic loading rate, excellent solid-liquid-gas three-phase separation, and stable operation make it widely used for treating high-concentration organic wastewater, brewery wastewater, meat processing wastewater, etc. In the field of agricultural waste treatment, it is also used to treat organic waste such as livestock and poultry manure. In existing high-concentration wastewater anaerobic treatment equipment, to return the dominant sludge from downstream to upstream and improve treatment efficiency, a return hopper is usually installed in the reactor body. Wastewater jumps over the edge of the return hopper and enters the hopper. However, when the returning water from different positions along the edge of the return hopper meets and collides, it easily generates turbulence, affecting the stability of the sludge bed and reducing the treatment efficiency. Utility Model Content

[0003] Therefore, the technical problem to be solved by this utility model is that in the existing high-concentration wastewater anaerobic treatment equipment, in order to return the downstream sludge to the upstream to improve the treatment effect, a return bucket is usually set in the reactor body. When the wastewater is returned, it jumps over the edge of the return bucket and enters the bucket. However, when the water returning from different positions on the edge of the return bucket meets and collides, it is easy to generate turbulence, which affects the stability of the sludge bed and reduces the treatment effect. Therefore, this utility model provides a multi-stage upflow self-circulating anaerobic reactor.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows: This utility model provides a multi-stage upflow self-circulating anaerobic reactor, comprising: a main body, which is a vertical tank structure; a main reaction chamber, a secondary reaction chamber, a guide channel, a tertiary reaction chamber, and a settling chamber are sequentially arranged within the main body along the water flow direction; a return hopper, disposed in the secondary reaction chamber and / or the settling chamber, to return the water in the secondary reaction chamber and / or the settling chamber to the main reaction chamber; and an anti-turbulence plate, disposed at the opening of the return hopper, with the top of the anti-turbulence plate higher than the opening of the return hopper; the anti-turbulence plate divides the opening of the return hopper into multiple independent inlet zones to avoid turbulence caused by the collision of water flowing back from different positions along the edge of the return hopper.

[0005] Furthermore, the shape of the reflux hopper opening includes one or more of the following: circular, square, and rectangular.

[0006] Furthermore, when the opening of the return hopper is circular, the anti-turbulence plate includes two plates arranged in a cross shape to divide the circular opening into four independent fan-shaped water inlet zones.

[0007] Furthermore, when the opening of the return hopper is square, the anti-turbulence plate includes two plates arranged in a cross shape, and the anti-turbulence plate is distributed along the diagonal of the square opening to divide the square opening into four independent triangular water inlet zones.

[0008] Furthermore, when the opening of the return hopper is rectangular, the anti-turbulence plate includes two sets of vertically distributed plate surfaces and a bridging plate. Both sets of vertically distributed plate surfaces in the anti-turbulence plate are connected to the corners of the rectangular opening. The bridging plate in the anti-turbulence plate is set parallel to the long side of the rectangular opening, and its two ends are connected to the corners of the two sets of vertically distributed plate surfaces, so as to divide the rectangular opening into two independent triangular water inlet areas and two independent trapezoidal water inlet areas.

[0009] Furthermore, the bottom of the anti-turbulence plate extends to the reduced diameter position of the return hopper.

[0010] Furthermore, the main reaction chamber, secondary reaction chamber, flow channel, and tertiary reaction chamber are concentrically arranged within the main body, and from the center of the main body outwards are the main reaction chamber, secondary reaction chamber, flow channel, and tertiary reaction chamber; the settling chamber is located on the outer ring of the main body and above the tertiary reaction chamber.

[0011] Furthermore, the multi-stage upflow self-circulating anaerobic reactor also includes a first water channel and a second water channel; the first water channel is located near the bottom of the main body and connects the main reaction chamber and the secondary reaction chamber; the second water channel is located near the bottom of the main body and connects the guide channel and the tertiary reaction chamber.

[0012] Furthermore, the water in the secondary reaction chamber overflows from the top into the guide channel.

[0013] Furthermore, when the reflux hopper is provided in the secondary reaction chamber, the opening of the reflux hopper is located upstream of the secondary reaction chamber; when the reflux hopper is provided in the settling chamber, the opening of the reflux hopper is located upstream of the settling chamber.

[0014] The technical solution of this utility model has the following advantages: The multi-stage upflow self-circulating anaerobic reactor provided by this invention features an anti-turbulence plate at the inlet of the return hopper. This anti-turbulence plate divides the inlet of the return hopper into multiple independent inlet zones. When the return water leaps over the edge of the return hopper inlet, it enters the hopper from different inlet zones, preventing turbulence caused by collisions between returning water from different locations. This results in a more stable sludge layer in the secondary reaction chamber and / or settling chamber, improving treatment efficiency. Furthermore, reducing turbulence lowers the energy consumption of the device and avoids affecting the return flow rate of the water. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the multi-stage upflow self-circulating anaerobic reactor in an embodiment of this utility model; Figure 2 This is a schematic diagram of the reflux hopper in the multi-stage upflow self-circulating anaerobic reactor in this embodiment of the present invention. Figure 3 This is a top view of the reflux hopper in a multi-stage upflow self-circulating anaerobic reactor according to one embodiment of the present invention. Figure 4 This is a top view of the reflux hopper in a multi-stage upflow self-circulating anaerobic reactor according to another embodiment of the present invention. Figure 5 This is a top view of the reflux hopper in a multi-stage upflow self-circulating anaerobic reactor according to another embodiment of the present invention.

[0017] Figure label: 1. Main body; 2. Main reaction chamber; 3. Secondary reaction chamber; 4. Flow guide channel; 5. Tertiary reaction chamber; 6. Settling chamber; 7. Return hopper; 701. Hopper opening; 702. Anti-turbulence plate; 8. Inlet pipe; 9. Outlet pipe; 10. Accelerating nozzle; 11. Throat pipe; 12. First water body channel; 13. Second water body channel; 14. First plate; 15. Second plate; 16. Outlet weir; 17. Air outlet pipe; 18. Manhole; 19. Scum baffle. Detailed Implementation

[0018] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0022] like Figure 1 , Figure 2 As shown, this embodiment provides a multi-stage upflow self-circulating anaerobic reactor, comprising: a main body 1, which is a vertical tank structure; a main reaction chamber 2, a secondary reaction chamber 3, a guide channel 4, a tertiary reaction chamber 5, and a settling chamber 6 are sequentially arranged within the main body 1 along the water flow direction; a return hopper 7, which can be a conventional return hopper 7, is arranged within the secondary reaction chamber 3 and / or the settling chamber 6 to return the water in the secondary reaction chamber 3 and / or the settling chamber 6 to the main reaction chamber 2; an anti-turbulence plate 702 is arranged at the opening 701 of the return hopper 7, with the top of the anti-turbulence plate 702 higher than the opening 701 of the return hopper 7; the anti-turbulence plate 702 divides the opening 701 of the return hopper 7 into multiple independent inlet zones to avoid turbulence caused by the collision of water flowing back from different positions along the edge of the return hopper 7. Among them, 701 refers to the part located at the top of the return hopper 7 for water intake.

[0023] The multi-stage upflow self-circulating anaerobic reactor provided in this embodiment has an anti-turbulence plate 702 installed at the opening 701 of the return hopper 7. The anti-turbulence plate 702 divides the opening 701 of the return hopper 7 into multiple independent inlet zones. When the return water jumps over the edge of the opening 701 of the return hopper 7, it enters the hopper from different inlet zones, thus avoiding turbulence caused by the collision of return water from different locations. This makes the sludge layer in the secondary reaction chamber 3 and / or settling chamber 6 more stable, which is beneficial to improving the treatment effect. Moreover, reducing turbulence can reduce the energy consumption of the device operation and also avoid affecting the return flow of water.

[0024] The shape of the opening 701 of the return hopper 7 includes one or more of the following: circular, square, and rectangular.

[0025] like Figure 3 As shown, the shape of the anti-turbulence plate 702 is adapted to the shape of the inlet 701. When the inlet 701 of the return bucket 7 is circular, the anti-turbulence plate 702 includes two plates arranged in a cross shape. The edges of the two plates are connected to the inner wall of the inlet 701, which can divide the circular inlet 701 into four independent fan-shaped water inlet areas.

[0026] like Figure 4 As shown, when the opening 701 of the return hopper 7 is square, the anti-turbulence plate 702 includes two plates arranged in a cross shape, and the anti-turbulence plate 702 is distributed along the diagonal of the square opening 701. For example, the edge of the anti-turbulence plate 702 can be connected to the corner of the opening 701, which can divide the square opening 701 into four independent triangular water inlet areas.

[0027] like Figure 5 As shown, when the opening 701 of the return hopper 7 is rectangular, the anti-turbulence plate 702 includes two sets of vertically distributed plate surfaces and a bridging plate. Both sets of vertically distributed plate surfaces in the anti-turbulence plate 702 are connected to the corners of the rectangular opening 701. The bridging plate in the anti-turbulence plate 702 is arranged parallel to the long side of the rectangular opening 701, and its two ends are respectively connected to the corners of the two sets of vertically distributed plate surfaces, thereby dividing the rectangular opening 701 into two independent triangular inlet areas and two independent trapezoidal inlet areas. For example, the dimensions of each set of vertically distributed plate surfaces can be the same. In this case, the anti-turbulence plate 702 divides the rectangular opening 701 into two independent isosceles triangular inlet areas and two independent isosceles trapezoidal inlet areas.

[0028] With this configuration, each side of the hopper opening 701 of the return hopper 7 does not need to share the return channel with other sides during return flow, thereby reducing turbulence.

[0029] The bottom of the anti-turbulence plate 702 can extend to the reduced diameter position of the return hopper 7.

[0030] Specifically, in this multi-stage upflow self-circulating anaerobic reactor, the space within the main body 1 can be divided into different functional chambers by setting partitions. For example, the partitions can be annular, thus separating different annular functional chambers. In terms of layout, the main reaction chamber 2, secondary reaction chamber 3, guide channel 4, and tertiary reaction chamber 5 can be concentrically arranged within the main body 1, arranged sequentially from the center of the main body 1 outwards. The settling chamber 6 can be located on the outermost ring of the main body 1, above the tertiary reaction chamber 5. This multi-stage upflow self-circulating anaerobic reactor also includes a first water channel 12 and a second water channel 13. The first water channel 12 is located near the bottom of the main body 1 and connects the main reaction chamber 2 and the secondary reaction chamber 3; the second water channel 13 is located near the bottom of the main body 1 and connects the guide channel 4 and the tertiary reaction chamber 5. For example, both the first water channel 12 and the second water channel 13 have several deflection channels to achieve smooth and gentle water intake by changing the flow direction of the water, thereby reducing turbulence. The water in the secondary reaction chamber 3 overflows from the top into the guide channel 4. For example, a certain gap is reserved between the top of the partition and the inner top wall of the main body 1. For example, the partition between the secondary reaction chamber 3 and the guide channel 4 is relatively short, so when the water level in the secondary reaction chamber 3 exceeds this partition, the water can overflow into the guide channel 4.

[0031] When the reflux hopper 7 is installed in the secondary reaction chamber 3, the opening 701 of the reflux hopper 7 is located upstream of the secondary reaction chamber 3; when the reflux hopper 7 is installed in the settling chamber 6, the opening 701 of the reflux hopper 7 is located upstream of the settling chamber 6. With this arrangement, water flows back from upstream of the secondary reaction chamber 3 and upstream of the settling chamber 6, diluting the high-concentration influent. Furthermore, increasing the water volume increases the upward flow velocity of the water in the main reaction chamber 2, secondary reaction chamber 3, and tertiary reaction chamber 5, keeping the anaerobic sludge in suspension, which is beneficial for sufficient contact and reaction between the anaerobic sludge and the wastewater. Moreover, the reflux in the settling chamber 6 reduces its load, facilitating sedimentation. Additionally, the reflux of the dominant anaerobic sludge allows it to contact the raw water, promoting rapid growth and increasing sludge concentration and treated water volume.

[0032] This multi-stage upflow self-circulating anaerobic reactor also includes a water acceleration device, which is located inside the main reaction chamber 2. This device comprises several stages of accelerating nozzles 10 and a throat 11. The inlet of each accelerating nozzle 10 is connected to the inlet pipe 8, and the outlet of each accelerating nozzle 10 extends to the inlet of the throat 11. External water enters the main reaction chamber 2 through the inlet pipe 8, is accelerated by the accelerating nozzles 10, and then enters the throat 11. The water rises along the throat 11 and then spreads outwards from the top of the throat 11, falling to the bottom of the main reaction chamber 2 before entering the secondary reaction chamber 3 through the first water channel 12. The outlet of the return hopper 7, after extending into the main reaction chamber 2, can be connected to the accelerating nozzles 10, allowing the returning water to also be accelerated.

[0033] The multi-stage upflow self-circulating anaerobic reactor also includes a three-stage separation plate, positioned between the three-stage reaction chamber 5 and the settling chamber 6, for separating sludge, water, and gas. For example, the three-stage separation plate may include two parallel, inclined first plates 14 and second plates 15. The first plate 14 can be mounted on the inner wall of the main body 1, and the second plate 15 can be mounted on a partition between the settling chamber 6 and the guide channel 4. The bottom of the second plate 15 has a vertical section, with a gap between the vertical section and the first plate 14 below. In operation, when the upflowing water encounters the three-stage separation plate, the sludge is blocked. Gas carried in the water is released upon impact with the first and second plates 14, while the water passes over the separation plate and enters the settling chamber 6. For example, the separated gas can be led to the top of the main body 1 through an exhaust pipe. An exhaust pipe 17 can be installed at the top of the main body 1. The space between the inner top wall of the main body 1 and the water surface can be used as a gas collection area to reduce equipment maintenance points and facilitate operation. The exhaust pipe 17 can discharge the gas from the gas collection area.

[0034] The multi-stage upflow self-circulating anaerobic reactor also includes an outlet weir 16, located downstream of the settling chamber 6. The treated water overflows into the outlet weir 16 and is then discharged from the outlet pipe 9 of the main body 1. For example, a scum baffle 19 can also be installed in the settling chamber 6 to prevent scum from entering the outlet weir 16, thus ensuring the effectiveness of the effluent.

[0035] The multi-stage upflow self-circulating anaerobic reactor also includes a manhole 18, which is located on the top of the main body 1, so that people can enter and exit the main body 1 through the manhole 18 for easy maintenance.

[0036] During operation, under the pressure of the pump body, external water enters the main reaction chamber 2 after passing through the water acceleration device. Then, the water in the main reaction chamber 2 enters the secondary reaction chamber 3 from the bottom through the first water channel 12. The water flows upward from the secondary reaction chamber 3, and a portion of the water flows back to the main reaction chamber 2 through the return bucket 7. The remaining water overflows from the top of the secondary reaction chamber 3 into the guide channel 4. The water in the guide channel 4 flows downward and enters the tertiary reaction chamber 5 through the second water channel 13 at the bottom. Then, the water in the tertiary reaction chamber 5 flows upward and enters the settling chamber 6. In the settling chamber 6, a portion of the water flows back to the main reaction chamber 2 through the return bucket 7, and the remaining water is discharged from the outlet pipe 9.

[0037] In summary, the multi-stage upflow self-circulating anaerobic reactor in this application is more integrated, can adapt to various application scenarios on a smaller scale, and also reduces the height of the equipment and the amount of underground or other civil engineering work.

[0038] The multi-stage upflow self-circulating anaerobic reactor in this application has a higher sludge layer height, better stability, and is conducive to sludge filtration, thereby improving the treatment effect.

[0039] The multi-stage upflow self-circulating anaerobic reactor described in this application can have a main body 1 made of steel or concrete. The shape of the main body 1 can be an existing rectangle, or a circle, polygon, etc.

[0040] The multi-stage upflow self-circulating anaerobic reactor in this application uses large-diameter nozzles for water distribution, which can avoid clogging and facilitate energy diversion and mixing.

[0041] The multi-stage upflow self-circulating anaerobic reactor described in this application provides a more thorough treatment effect compared to a single-stage upflow anaerobic reactor.

[0042] The multi-stage upflow self-circulating anaerobic reactor in this application does not require an internal gas-liquid separator or a complex three-phase separator, thus reducing maintenance costs.

[0043] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A multi-stage upflow self-circulating anaerobic reactor, characterized in that, include: The main body (1) is a vertical tank structure; along the flow direction of the water body, the main body (1) is provided with a main reaction chamber (2), a secondary reaction chamber (3), a flow guide channel (4), a tertiary reaction chamber (5) and a settling chamber (6) in sequence. A return hopper (7) is provided in the secondary reaction chamber (3) and / or the settling chamber (6) to return the water in the secondary reaction chamber (3) and / or the settling chamber (6) to the main reaction chamber (2); An anti-turbulence plate (702) is provided at the opening (701) of the return bucket (7), with the top of the anti-turbulence plate (702) higher than the opening (701) of the return bucket (7). The anti-turbulence plate (702) divides the opening (701) of the return bucket (7) into multiple independent water inlet zones to avoid the collision and turbulence caused by the water flowing back from different positions on the edge of the return bucket (7).

2. The multi-stage upflow self-circulating anaerobic reactor according to claim 1, characterized in that, The shape of the opening (701) of the reflux hopper (7) includes one or more of the following: circular, square, and rectangular.

3. The multi-stage upflow self-circulating anaerobic reactor according to claim 2, characterized in that, When the opening (701) of the return bucket (7) is circular, the anti-turbulence plate (702) includes two plates arranged in a cross shape to divide the circular opening (701) into four independent fan-shaped water inlet zones.

4. The multi-stage upflow self-circulating anaerobic reactor according to claim 2, characterized in that, When the opening (701) of the return bucket (7) is square, the anti-turbulence plate (702) includes two plates arranged in a cross shape, and the anti-turbulence plate (702) is distributed along the diagonal of the square opening (701) to divide the square opening (701) into four independent triangular water inlet zones.

5. The multi-stage upflow self-circulating anaerobic reactor according to claim 2, characterized in that, When the opening (701) of the return bucket (7) is rectangular, the anti-turbulence plate (702) includes two sets of vertically distributed plate surfaces and a bridging plate. The two sets of vertically distributed plate surfaces in the anti-turbulence plate (702) are connected to the corners of the rectangular opening (701). The bridging plate in the anti-turbulence plate (702) is set parallel to the long side of the rectangular opening (701), and its two ends are connected to the corners of the two sets of vertically distributed plate surfaces, so as to divide the rectangular opening (701) into two independent triangular water inlet areas and two independent trapezoidal water inlet areas.

6. The multi-stage upflow self-circulating anaerobic reactor according to claim 1, characterized in that, The bottom of the anti-turbulence plate (702) extends to the reduced diameter position of the return hopper (7).

7. The multi-stage upflow self-circulating anaerobic reactor according to claim 1, characterized in that, The main reaction chamber (2), secondary reaction chamber (3), flow channel (4) and tertiary reaction chamber (5) are concentrically arranged within the main body (1), and from the center of the main body (1) outwards are the main reaction chamber (2), secondary reaction chamber (3), flow channel (4) and tertiary reaction chamber (5); The settling chamber (6) is located on the outer ring of the main body (1) and above the tertiary reaction chamber (5).

8. The multi-stage upflow self-circulating anaerobic reactor according to claim 7, characterized in that, It also includes the first water body channel (12) and the second water body channel (13); The first water channel (12) is located near the bottom of the main body (1) and connects the main reaction chamber (2) and the secondary reaction chamber (3). The second water channel (13) is located near the bottom of the main body (1) and connects the flow channel (4) with the third-stage reaction chamber (5).

9. The multi-stage upflow self-circulating anaerobic reactor according to claim 7, characterized in that, The water in the secondary reaction chamber (3) overflows from the top into the guide channel (4).

10. The multi-stage upflow self-circulating anaerobic reactor according to claim 1, characterized in that, When the secondary reaction chamber (3) is equipped with the reflux hopper (7), the opening (701) of the reflux hopper (7) is located upstream of the secondary reaction chamber (3); When the settling chamber (6) is equipped with the reflux hopper (7), the opening (701) of the reflux hopper (7) is located upstream of the settling chamber (6).

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