A multi-stage hydraulic circulation clarifier

Abstract

This utility model relates to the field of wastewater treatment technology and provides a multi-stage hydraulic circulation clarifier, comprising: a main body, which is a vertical tank structure; a coagulation chamber, a flocculation chamber, and a settling chamber arranged sequentially within the main body along the water flow direction; a return hopper, disposed within the settling chamber, to return water from the settling chamber to the flocculation chamber; and an anti-turbulence plate, disposed at the opening of the return hopper, with its top 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 prevent turbulence caused by the collision of water flowing back from different positions along the edge of the return hopper. In this multi-stage hydraulic circulation clarifier, the anti-turbulence plate divides the opening of the return hopper into multiple independent inlet zones. When the returning water passes over the edge of the return hopper opening, it enters the hopper from different inlet zones, preventing turbulence caused by the collision of water flowing back from different positions. This results in a more stable sludge layer in the settling chamber, which is beneficial for improving the treatment effect.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a multi-stage hydraulic circulation clarifier. Background Technology

[0002] Existing water treatment devices mainly consist of an inlet pipe, a reactor body, and an outlet pipe. The reactor body contains a coagulation chamber, a flocculation chamber, and a settling chamber. To return the downstream sludge to the upstream, a return hopper is usually installed in the settling chamber. When wastewater returns, it leaps over the edge of the return hopper and enters the hopper. However, when the returning water from different positions on the edge of the return hopper meets and collides, it easily generates turbulence, affecting the stability of the sludge bed in the settling chamber and reducing the treatment efficiency. Utility Model Content

[0003] Therefore, the technical problem to be solved by this utility model is that the turbulence generated when the returning water at different positions on the edge of the return bucket of the existing water treatment device meets and collides is easy to generate, which affects the stability of the sludge bed and reduces the treatment effect. Thus, a multi-stage hydraulic circulation clarifier is provided.

[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 hydraulic circulation clarifier, comprising: a main body, which is a vertical tank structure; a coagulation chamber, a flocculation chamber, and a settling chamber are sequentially arranged within the main body along the water flow direction; a return hopper, disposed in the settling chamber, to return the water in the settling chamber to the flocculation chamber; and an anti-turbulence plate, disposed at the opening of the return hopper, the top of the anti-turbulence plate being 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 flocculation chamber and the settling chamber are arranged concentrically within the main body, with the flocculation chamber located in the inner circle and the settling chamber located in the outer circle; a portion of the space within the main body where the settling chamber is located is separated as the coagulation chamber.

[0011] Furthermore, multiple reflux hoppers are spaced apart within the settling chamber along its circumferential direction, with the opening of each reflux hopper located upstream of the settling chamber.

[0012] Furthermore, the multi-stage hydraulic circulation clarifier also includes a first water channel and a second water channel; the first water channel is located near the top of the main body and connects the coagulation chamber and the flocculation chamber; the second water channel is located near the bottom of the main body and connects the flocculation chamber and the settling chamber.

[0013] Furthermore, the multi-stage hydraulic circulation clarifier also includes a sludge discharge pipe, one end of which is connected to the return bucket, and the other end extends to the outside of the main body.

[0014] The technical solution of this utility model has the following advantages: The multi-stage hydraulic circulation clarifier provided by this utility model features an anti-turbulence plate at the opening of the return hopper. This anti-turbulence plate divides the opening of the return hopper into multiple independent inlet zones. When the returning water leaps over the edge of the return hopper opening, 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 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 hydraulic circulation clarifier in an embodiment of the present invention from one perspective; Figure 2 This is a schematic diagram of the multi-stage hydraulic circulation clarifier in one embodiment of the present invention; Figure 3 This is a schematic diagram of the reflux bucket in the multi-stage hydraulic circulation clarifier in this embodiment of the present invention; Figure 4 This is a top view of the reflux bucket in a multi-stage hydraulic circulation clarifier according to one embodiment of the present invention; Figure 5 This is a top view of the reflux bucket in a multi-stage hydraulic circulation clarifier according to another embodiment of the present invention; Figure 6 This is a top view of the reflux bucket in a multi-stage hydraulic circulation clarifier according to another embodiment of the present invention.

[0017] Figure label: 1. Main body; 2. Coagulation chamber; 3. Flocculation chamber; 4. Settling chamber; 5. Return hopper; 501. Hopper opening; 502. Anti-turbulence plate; 6. Water inlet pipe; 7. First water body channel; 8. Second water body channel; 9. Throat pipe; 10. Accelerating nozzle; 11. Water inlet pipe; 12. Water outlet pipe; 13. Water collection pipe; 14. Water outlet weir; 15. Sludge discharge pipe. 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 well as Figure 3 As shown, this embodiment provides a multi-stage hydraulic circulation clarifier, including: a main body 1, which is a vertical tank structure; a coagulation chamber 2, a flocculation chamber 3, and a settling chamber 4 are sequentially arranged within the main body 1 along the water flow direction; a return hopper 5, disposed within the settling chamber 4, to return the water in the settling chamber 4 to the flocculation chamber 3; and an anti-turbulence plate 502, disposed at the opening 501 of the return hopper 5, the top of the anti-turbulence plate 502 being higher than the opening 501 of the return hopper 5; the anti-turbulence plate 502 divides the opening 501 of the return hopper 5 into multiple independent water inlet zones to prevent the water flowing back from different positions along the edge of the return hopper 5 from colliding and causing turbulence. The opening 501 refers to the part located at the top of the return hopper 5 for water inlet.

[0023] The multi-stage hydraulic circulation clarifier provided in this embodiment has an anti-turbulence plate 502 installed at the opening 501 of the return hopper 5. The anti-turbulence plate 502 divides the opening 501 of the return hopper 5 into multiple independent inlet zones. When the return water jumps over the edge of the opening 501 of the return hopper 5, it enters the hopper from different inlet zones, thus avoiding the collision and turbulence caused by the return water from different locations meeting. This makes the sludge layer in the settling chamber 4 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 the water.

[0024] The shape of the opening 501 of the reflux hopper 5 includes one or more of the following: circular, square, and rectangular.

[0025] like Figure 4As shown, the shape of the anti-turbulence plate 502 is adapted to the shape of the inlet 501. When the inlet 501 of the return bucket 5 is circular, the anti-turbulence plate 502 includes two plates arranged in a cross shape, and the edges of the two plates are connected to the inner wall of the inlet 501, which can divide the circular inlet 501 into four independent fan-shaped water inlet zones.

[0026] like Figure 5 As shown, when the opening 501 of the return hopper 5 is square, the anti-turbulence plate 502 includes two plates arranged in a cross shape, and the anti-turbulence plate 502 is distributed along the diagonal of the square opening 501. For example, the edge of the anti-turbulence plate 502 can be connected to the corner of the opening 501, which can divide the square opening 501 into four independent triangular water inlet areas.

[0027] like Figure 6 As shown, when the opening 501 of the return hopper 5 is rectangular, the anti-turbulence plate 502 includes two sets of vertically distributed plate surfaces and a bridging plate. Both sets of vertically distributed plate surfaces in the anti-turbulence plate 502 are connected to the corners of the rectangular opening 501. The bridging plate in the anti-turbulence plate 502 is arranged parallel to the long side of the rectangular opening 501, and its two ends are respectively connected to the corners of the two sets of vertically distributed plate surfaces, thereby dividing the rectangular opening 501 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 502 divides the rectangular opening 501 into two independent isosceles triangular inlet areas and two independent isosceles trapezoidal inlet areas.

[0028] With this configuration, each side of the hopper opening 501 of the return hopper 5 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 502 extends to the reduced diameter position of the return hopper 5.

[0030] Specifically, in this multi-stage hydraulic circulation clarifier, the space within the main body 1 can be divided into different functional chambers by setting partitions. For example, the partitions can be annular or rectangular, thus separating different functional chambers. In terms of layout, the flocculation chamber 3 and the settling chamber 4 are arranged concentrically within the main body 1, with the flocculation chamber 3 located in the inner circle and the settling chamber 4 in the outer circle. A portion of the space within the outer circle containing the settling chamber 4 is designated as the coagulation chamber 2. The multi-stage hydraulic circulation clarifier also includes a first water channel 7 and a second water channel 8. The first water channel 7 is located near the top of the main body 1 and connects the coagulation chamber 2 and the flocculation chamber 3; the second water channel 8 is located near the bottom of the main body 1 and connects the flocculation chamber 3 and the settling chamber 4. For example, both the first water channel 7 and the second water channel 8 can have several deflection channels to achieve a smooth and gentle inflow by changing the flow direction of the water, thereby reducing turbulence. The water in the coagulation chamber 2 overflows from the top into the flocculation chamber 3 after being deflected by the first water channel 7. For example, a water inlet pipe 6 can be installed at the outlet of the first water channel 7, with its outlet extending to the bottom of the flocculation chamber 3. Multiple return hoppers 5 are spaced apart within the settling chamber 4 along its circumferential direction, with the opening 501 of each return hopper 5 located upstream of the settling chamber 4. This arrangement allows water to return from the upstream of the settling chamber 4, diluting the high-concentration influent after mixing. Furthermore, increasing the water volume increases the upward flow velocity of the water in the flocculation chamber 3, keeping the anaerobic sludge in suspension, which is beneficial for the anaerobic sludge to fully contact and react with the wastewater. Moreover, the return flow in the settling chamber 4 reduces its load, facilitating sedimentation. Moreover, the advantage of anaerobic sludge recirculation is that it can come into contact with raw water, allowing it to grow rapidly and increasing sludge concentration and the amount of water treated.

[0031] The multi-stage hydraulic circulation clarifier also includes a sludge discharge pipe 15, one end of which is connected to the return hopper 5, and the other end extends to the outside of the main body 1. This configuration allows for the timely discharge of sludge deposited in the return hopper 5 as needed.

[0032] The multi-stage hydraulic circulation clarifier also has a water acceleration device installed in the coagulation chamber 2, including several stages of acceleration nozzles 10 and throats 9. The inlet of the acceleration nozzle 10 is connected to the water inlet pipe 11, and the outlet of the acceleration nozzle 10 extends to the inlet of the throat 9. External water enters the coagulation chamber 2 from the water inlet pipe 11, and after being accelerated by the acceleration nozzles 10, it enters the throat 9. The water rises along the throat 9 and then spreads outwards from the top of the throat 9. After falling to the bottom of the coagulation chamber 2, the water enters the flocculation chamber 3 through the first water channel 7.

[0033] The water acceleration device can also be installed in the flocculation chamber 3, including several stages of acceleration nozzles 10 and throat pipes 9. The inlet of the acceleration nozzle 10 is connected to the water inlet pipe 6 installed at the outlet of the first water channel 7. The outlet of the acceleration nozzle 10 extends to the inlet of the throat pipe 9. The water in the coagulation chamber 2 enters the flocculation chamber 3 from the drinking water pipe, and enters the throat pipe 9 after being accelerated by the acceleration nozzles 10. The water rises along the throat pipe 9 and then spreads and falls to the surrounding area at the top of the throat pipe 9. After falling to the bottom of the flocculation chamber 3, the water enters the sedimentation chamber 4 through the second water channel 8.

[0034] The outlet of the return hopper 5 can be connected to the acceleration nozzle 10 in the flocculation chamber 3 after it extends into the flocculation chamber 3, so that the returned water can also be accelerated.

[0035] The multi-stage hydraulic circulation clarifier also includes a water collection pipe 13 and an outlet weir 14, both of which are located downstream of the settling chamber 4. The treated water enters the outlet weir 14 from the water collection pipe 13. The main body 1 is also equipped with an outlet pipe 12, which is connected to the outlet weir 14. The water in the outlet weir 14 is discharged from the outlet pipe 12.

[0036] During use, under the pressure of the pump body, the external water enters the coagulation chamber 2 after passing through the water acceleration device. Then, a portion of the water in the coagulation chamber 2 enters the flocculation chamber 3 through the first water channel 7. Then, a portion of the water in the flocculation chamber 3 enters the settling chamber 4 through the second water channel 8. Then, a portion of the water in the settling chamber 4 flows back to the flocculation chamber 3 through the return bucket 5, and the remaining water is discharged from the outlet pipe 12.

[0037] In summary, the multi-stage hydraulic circulation clarifier 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 hydraulic circulation clarifier in this application has a higher sludge layer height and better stability, which is conducive to sludge filtration and improves the treatment effect.

[0039] The multi-stage hydraulic circulation clarifier in this application can have a main body 1 made of steel or concrete. The shape of the main body 1 can be a rectangle, a circle, a polygon, or other shapes.

[0040] The multi-stage hydraulic circulation clarifier in this application uses large-diameter nozzles for water distribution, which can avoid clogging and facilitate energy diversion and mixing.

[0041] 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 hydraulic circulation clarifier, 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 coagulation chamber (2), a flocculation chamber (3) and a settling chamber (4) in sequence. A return hopper (5) is installed inside the settling chamber (4) to return the water in the settling chamber (4) to the flocculation chamber (3); An anti-turbulence plate (502) is installed at the opening (501) of the return bucket (5), with the top of the anti-turbulence plate (502) higher than the opening (501) of the return bucket (5). The anti-turbulence plate (502) divides the opening (501) of the return bucket (5) 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 (5).

2. The multi-stage hydraulic circulation clarifier according to claim 1, characterized in that, The shape of the opening (501) of the reflux hopper (5) includes one or more of the following: circular, square, and rectangular.

3. The multi-stage hydraulic circulation clarifier according to claim 2, characterized in that, When the opening (501) of the return bucket (5) is circular, the anti-turbulence plate (502) includes two plates arranged in a cross shape to divide the circular opening (501) into four independent fan-shaped water inlet zones.

4. The multi-stage hydraulic circulation clarifier according to claim 2, characterized in that, When the opening (501) of the return bucket (5) is square, the anti-turbulence plate (502) includes two plates arranged in a cross shape, and the anti-turbulence plate (502) is distributed along the diagonal of the square opening (501) to divide the square opening (501) into four independent triangular water inlet zones.

5. The multi-stage hydraulic circulation clarifier according to claim 2, characterized in that, When the opening (501) of the return bucket (5) is rectangular, the anti-turbulence plate (502) 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 (502) are connected to the corners of the rectangular opening (501). The bridging plate in the anti-turbulence plate (502) is set parallel to the long side of the rectangular opening (501), 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 (501) into two independent triangular water inlet areas and two independent trapezoidal water inlet areas.

6. The multi-stage hydraulic circulation clarifier according to claim 1, characterized in that, The bottom of the anti-turbulence plate (502) extends to the reduced diameter position of the return hopper (5).

7. The multi-stage hydraulic circulation clarifier according to claim 1, characterized in that, The flocculation chamber (3) and the settling chamber (4) are arranged in concentric circles within the main body (1), with the flocculation chamber (3) located in the inner circle and the settling chamber (4) located in the outer circle. The outer ring of the main body (1) where the settling chamber (4) is located is separated into a space as the coagulation chamber (2).

8. The multi-stage hydraulic circulation clarifier according to claim 7, characterized in that, Multiple return buckets (5) are arranged at intervals in the settling chamber (4) along the circumferential direction of the settling chamber (4), and the opening (501) of each return bucket (5) is located upstream of the settling chamber (4).

9. The multi-stage hydraulic circulation clarifier according to claim 7, characterized in that, It also includes the first water body channel (7) and the second water body channel (8); The first water channel (7) is located near the top of the main body (1) and connects the coagulation chamber (2) and the flocculation chamber (3). The second water channel (8) is located near the bottom of the main body (1) and connects the flocculation chamber (3) and the sedimentation chamber (4).

10. The multi-stage hydraulic circulation clarifier according to claim 1, characterized in that, It also includes a sludge discharge pipe (15), one end of which is connected to the return hopper (5), and the other end extends to the outside of the main body (1).

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