Aerobic granular sludge process reaction tank

Abstract

The utility model discloses an aerobic granular sludge process reaction tank, which relates to the technical field of sewage biochemical treatment equipment, and comprises a tank body, and a water outlet component, a sludge discharge component, an aeration component and a water inlet component which are arranged on the tank body, the aeration assembly, the water inlet assembly, the sludge discharge assembly and the water outlet assembly are sequentially arranged in the reaction area from bottom to top, the reaction area is rectangular, the drainage area is located on the side edge of the reaction area, the water outlet assembly comprises a water outlet groove, the water outlet groove is erected on the tank body, one end of the water outlet groove is communicated with the drainage area, and the other end of the water outlet groove is communicated with the sludge discharge assembly. The cross section of the water outlet groove is in a U shape, the upper end face of the water outlet groove is parallel to the horizontal plane, an inner groove of the water outlet groove is obliquely formed, and the side, close to the drainage area, of the inner groove of the water outlet groove is lower than the side, away from the drainage area, of the inner groove of the water outlet groove.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage biochemical treatment equipment, in particular to an aerobic granular sludge process reaction tank. Background Art

[0002] Aerobic granular sludge process is an emerging sewage treatment process. It is a sewage treatment technology with great economic and social benefits due to its advantages such as small footprint, low investment cost, low operating cost, and simultaneous nitrogen and phosphorus removal. However, due to the uniqueness of this process, its water inlet, water outlet, and sludge discharge methods are different from the existing activated sludge method and biofilm method. The aerobic granular sludge process requires a special reaction tank structure to achieve its relatively lower operating cost and better treatment effect. Utility Model Content

[0003] The utility model aims to provide an aerobic granular sludge process reaction tank in view of the shortcomings of the existing technology.

[0004] An aerobic granular sludge process reaction tank comprises a tank body, and a water outlet assembly, a sludge discharge assembly, an aeration assembly and a water inlet assembly arranged on the tank body, wherein the tank body comprises a reaction zone and a drainage zone, wherein the aeration assembly, the water inlet assembly, the sludge discharge assembly and the water outlet assembly are arranged in the reaction zone in sequence from bottom to top, wherein the reaction zone is arranged in a rectangular shape, and the drainage zone is located at the side of the reaction zone.

[0005] The water outlet assembly includes 2-6 water outlet grooves, and the structures of the multiple water outlet grooves are the same. The multiple water outlet grooves are evenly spaced and arranged on the pool body. The lower side of the grooves in the multiple water outlet grooves is arranged in the drainage area. The cross section of the water outlet groove is arranged in a U shape, and the outlet water level is maintained between the high and low points of the notch on the top of the water outlet weir plate;

[0006] An extension portion is arranged on the side of the water outlet trough located in the drainage area, and a drainage port opening downward is arranged on the side of the extension portion away from the reaction area.

[0007] Furthermore, the inner groove of the water outlet trough is arranged to be inclined, and the height of the inner groove of the water outlet trough close to the drainage area is lower than the height of the inner groove of the water outlet trough far from the drainage area.

[0008] Furthermore, water outlet weir plates are arranged on both sides of the water outlet trough.

[0009] Furthermore, the height between the high and low points of the notch at the top of the outlet weir plate is the outlet water level height.

[0010] Furthermore, the water outlet weir plate is provided with a plurality of oval holes, and bolts are passed through the oval holes on the water outlet weir plate to fix it on the water outlet trough.

[0011] Furthermore, triangular, trapezoidal or rectangular notches are arranged on the water outlet weir plate.

[0012] Furthermore, the reaction zone is arranged in a rectangular parallelepiped, the drainage zone is arranged on one side of a short side of the reaction zone, and the plurality of water outlet troughs are parallel to one side of a long side of the reaction zone.

[0013] Furthermore, a drainage pipe is provided on the drainage area.

[0014] Furthermore, it also includes a drainage pipeline, which is installed between the water outlet component and the mud discharge component.

[0015] Furthermore, the aeration assembly includes an aeration vertical pipe, an aeration plate horizontal mounting pipe and an aeration plate, the aeration plate horizontal mounting pipe includes an outer ring pipe and an inner branch pipe, the aeration vertical pipe is connected to the outer ring pipe, the outer ring pipe is arranged in a rectangular ring shape, a number of inner branch pipes are arranged, and the inner branch pipes are connected to the outer ring pipe, and a number of aeration plates are arranged, and the number of aeration plates are arranged at equal intervals on the inner branch pipes.

[0016] The advantages of the utility model compared with the prior art are:

[0017] First, in this scheme, the reaction zone is arranged in a rectangular shape, the drainage zone is located on the side of the reaction zone, and the water outlet component includes a water outlet trough, which is mounted on the tank body, and one end of the water outlet trough is connected to the drainage zone. The cross-section of the water outlet trough is arranged in a U shape, and the upper end surface of the water outlet trough is parallel to the horizontal plane. The upper outlet water in the reaction tank flows into the inner side of the water outlet trough through the baffles on both sides of the water outlet trough. The inner groove of the water outlet trough is arranged at an angle, and the height of the side of the inner groove of the water outlet trough close to the drainage zone is lower than the height of the side away from the drainage zone. The water in the water outlet trough is guided to the drainage zone for collection through the inclined setting of the water outlet trough.

[0018] Second: In this solution, water outlet weir plates are provided on both sides of the water outlet trough, and a number of oval holes are arranged on the water outlet weir plates. Bolts pass through the oval holes on the water outlet weir plates to fix them on the water outlet trough. In this solution, the water outlet weir plates are provided to guide the upper water, and the oval holes provided can facilitate the staff to fine-tune the height of the water outlet weir plates.

[0019] Third: In this scheme, 2-6 water outlet troughs are arranged, and the structures of the multiple water outlet troughs are the same. The multiple water outlet troughs are evenly spaced on the tank body, and the lower sides of the grooves in the multiple water outlet troughs are all arranged in the drainage area. By arranging multiple water outlet troughs, the upper water can be discharged synchronously when the equipment is running, thereby ensuring that the water outlet component has sufficient drainage volume, and the multiple water outlet troughs arranged at equal intervals can evenly discharge the upper water in the reaction tank, further improving the drainage efficiency.

[0020] Fourthly, the reaction zone in this scheme is arranged in a rectangular parallelepiped, the drainage zone is arranged on one side of the short side of the reaction zone, and the plurality of water outlet troughs are parallel to one side of the long side of the reaction zone, thereby improving the structural compactness of the equipment and ensuring that the upper water in the reaction zone can be discharged evenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of this scheme;

[0022] Figure 2 Schematic diagram of the internal structure of the middle pool;

[0023] Figure 3 This is a top view of the scheme;

[0024] Figure 4 It is a structural schematic diagram of the water outlet tank;

[0025] Figure 5 for Figure 4 A schematic diagram of the enlarged structure at A in the middle;

[0026] Figure 6 It is a side view of the water outlet tank;

[0027] Figure 7 A schematic diagram of the structure of the aeration component.

[0028] Figure numerals: tank body 1, reaction zone 11, drainage zone 12, drainage pipe 121, water outlet assembly 2, water outlet trough 21, drainage port 211, water outlet weir plate 22, waist-shaped hole 221, notch 222, mud discharge assembly 3, aeration assembly 4, aeration vertical pipe 41, aeration plate 42, outer ring pipe 43, inner branch pipe 44, water inlet assembly 5, drainage pipeline 6. DETAILED DESCRIPTION

[0029] Combined with Figure 1-7 As shown, an aerobic granular sludge process reaction tank includes a tank body 1, and an outlet assembly 2, a sludge discharge assembly 3, an aeration assembly 4 and an inlet assembly 5 arranged on the tank body 1. The tank body 1 includes a reaction area 11 and a drainage area 12. The aeration assembly 4, the inlet assembly 5, the sludge discharge assembly 3 and the outlet assembly 2 are arranged in the reaction area 11 from bottom to top. The sewage is transported to the reaction area 11 through the inlet assembly 5, and the sewage in the tank body 1 is aerated through the aeration assembly 4. After the sewage is treated, the upper effluent is discharged through the outlet assembly 2, and the sludge precipitated in the reaction tank is discharged through the sludge discharge assembly 3.

[0030] Preferably, the reaction zone 11 is arranged in a rectangular shape, the drainage zone 12 is located on the side of the reaction zone 11, and the water outlet component 2 includes a water outlet trough 21, the water outlet trough 21 is mounted on the tank body 1, and one end of the water outlet trough 21 is connected to the drainage zone 12, the cross section of the water outlet trough 21 is arranged in a U shape, and the upper end surface of the water outlet trough 21 is parallel to the horizontal plane. During the operation of the reaction tank, sewage is input from the bottom of the tank body 1, and the water level of the upper water outlet located above the tank body 1 is raised. At this time, the upper water outlet will flow into the inner side of the water outlet trough 21 through the baffles on both sides of the water outlet trough 21 parallel to the horizontal plane. The inner groove of the water outlet trough 21 is inclined, and the height of the side of the inner groove of the water outlet trough 21 close to the drainage area 12 is lower than the height of the side away from the drainage area 12. The inclined setting of the water outlet trough 21 guides the outlet water therein to the drainage area 12 for collection. A drain port 211 is provided on the side of the water outlet trough 21 in the drainage area 12, and the upper outlet water collected in the water outlet trough 21 is guided to the drainage area 12 through the drain port 211. In this scheme, a drain pipe 121 is provided on the drainage area 12, and the upper outlet water collected in the drainage area 12 can be discharged through the drain pipe 121.

[0031] Preferably, an extension portion is provided on the water outlet trough 21 on one side of the drainage area 12, and a drainage port 211 opening downward is provided on the side of the extension portion away from the reaction area 11. The extension portion is provided in the water outlet trough 21 in the present embodiment, so that the drainage position of the water outlet trough 21 can be extended, thereby preventing the water flowing out of the water outlet trough 21 from directly flushing onto the wall or pipe of the drainage area 12, thereby improving the service life of the wall or pipe of the drainage area 12.

[0032] Preferably, water outlet weir plates 22 are provided on both sides of the water outlet trough 21, and a plurality of oval holes 221 are arranged on the water outlet weir plates 22. Bolts pass through the oval holes 221 on the water outlet weir plates 22 to fix them on the water outlet trough 21. In this scheme, the water outlet weir plates 22 are provided to guide the upper water, and the oval holes 221 can facilitate the staff to fine-tune the setting height and inclination angle of the water outlet weir plates 22.

[0033] Furthermore, a triangular notch 222 is arranged on the water outlet weir plate 22. During operation, the upper water will flow into the inner side of the water outlet trough 21 through the triangular notch 222 on the water outlet weir plate 22, thereby improving the filtering of impurities in the water by the water outlet weir plate 22 and preventing floating impurities from entering the water outlet trough 21.

[0034] Optionally, 2-6 water outlet grooves 21 are provided, and the structures of the multiple water outlet grooves 21 are the same. The multiple water outlet grooves 21 are evenly spaced on the tank body 1, and the lower side of the grooves in the multiple water outlet grooves 21 is arranged in the drainage area 12. By providing multiple water outlet grooves 21, the upper water outlet can be discharged synchronously when the equipment is running, thereby ensuring that the water outlet component 2 has sufficient drainage, and the multiple water outlet grooves 21 arranged at equal intervals can evenly discharge the upper water outlet in the reaction tank, further improving the drainage efficiency;

[0035] On this basis, the present solution is preferably configured with four water outlet troughs 21 , which are arranged in parallel and at equal intervals in the tank body 1 , and the discharge of the upper effluent in the reaction tank can be satisfied through the four water outlet troughs 21 .

[0036] Preferably, the reaction zone 11 is arranged in a rectangular parallelepiped, the drainage zone 12 is arranged on one side of the short side of the reaction zone 11, and the multiple water outlet troughs 21 are parallel to one side of the long side of the reaction zone 11, so as to improve the structural compactness of the equipment and ensure that the upper water in the reaction zone 11 can be discharged evenly.

[0037] Optionally, the present solution further includes a drainage pipeline 6 installed between the water outlet component 2 and the mud discharge component 3. The drainage pipeline 6 can be used to discharge the upper liquid in the reaction tank, thereby lowering the liquid level in the reaction zone 11.

[0038] It can be selected that the aeration assembly 4 includes an aeration vertical pipe 41, an aeration plate horizontal installation pipe and an aeration plate 42, the aeration plate horizontal installation pipe includes an outer ring pipe 43 and an inner branch pipe 44, the aeration vertical pipe 41 is connected to the outer ring pipe 43, the outer ring pipe 43 is arranged in a rectangular frame shape, a plurality of inner branch pipes 44 are arranged, and the plurality of inner branch pipes 44 are arranged at equal intervals on the outer ring pipe 43, the inner branch pipe 44 is connected to the outer ring pipe 43, a plurality of aeration plates 42 are arranged, and the plurality of aeration plates 42 are arranged at equal intervals on the plurality of inner branch pipes 44, an externally arranged aeration pump is connected to the aeration vertical pipe 41, and an airflow is transported to the aeration plate horizontal installation pipe through the aeration vertical pipe 41, and an airflow is evenly guided to the plurality of inner branch pipes 44 through the outer ring pipe 43, and an airflow is output through the aeration plates 42 arranged on the plurality of inner branch pipes 44 to generate aeration;

[0039] The contour of the outer ring pipe 43 in the present scheme is set according to the size of the reaction zone 11, so as to ensure that the inner branch pipe 44 and the plurality of aeration plates 42 thereon can evenly aerate the mud-water mixture in the reaction zone 11. Optionally, multiple outer ring pipes 43 can be set in the present scheme, and the multiple outer ring pipes 43 are respectively connected to the aeration vertical pipe 41, so as to further achieve uniform and thorough aeration of the sludge in the reaction zone 11.

[0040] When the present solution is used, the sewage is transported to the reaction zone 11 of the reaction tank through the water inlet component 5, and then the aeration component 4 is started to aerate and oxygenate the input sewage through the aeration component 4, so that the sewage and the activated sludge are fully mixed and contacted, and the organic pollutants in the sewage are degraded by microorganisms. After the aeration is completed, the mud and water are separated by standing. At this time, the sludge in the reaction tank will settle to the lower position of the reaction zone 11, and the purified sewage, that is, the supernatant, is located at the upper position of the reaction zone 11. Then the water inlet component 5 is opened again, and the untreated sewage is input through the water inlet component 5. The input of sewage makes the reaction tank The water level in the reaction zone 11 continues to rise, and the supernatant flows through the outlet weir plate 22 to the several outlet troughs 21 respectively. The supernatant is led to the drainage area 12 through the several outlet troughs 21, and the outlet water in the drainage area 12 is discharged through the drain pipe 121. After the discharge of the upper outlet water is completed, the water inlet component 5 is closed, and the drainage pipeline 6 is started to discharge the water on the upper side of the reaction zone 11. At this time, the water level in the reaction zone 11 is reduced, and the aeration component 4 is started to aerate the sewage in the reaction zone 11 again. When the sludge content in the reaction tank is high, the sludge discharge component 3 is started, and the sludge in the reaction tank is discharged through the sludge discharge component 3.

[0041] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0044] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An aerobic granular sludge process reaction tank, characterized in that: The invention comprises a tank body (1), and a water outlet assembly (2), a mud discharge assembly (3), an aeration assembly (4) and a water inlet assembly (5) arranged on the tank body (1); the tank body (1) comprises a reaction zone (11) and a drainage zone (12); the aeration assembly (4), the water inlet assembly (5), the mud discharge assembly (3) and the water outlet assembly (2) are arranged in sequence from bottom to top in the reaction zone (11); the reaction zone (11) is arranged in a rectangular shape; the drainage zone (12) is located on the side of the reaction zone (11); The water outlet assembly (2) comprises 2 to 6 water outlet grooves (21), the multiple water outlet grooves (21) have the same structure, the multiple water outlet grooves (21) are evenly spaced and arranged on the pool body (1), the lower side of the grooves in the multiple water outlet grooves (21) are all arranged in the drainage area (12), the cross section of the water outlet grooves (21) is arranged in a U shape, and the upper end surface of the water outlet grooves (21) is parallel to the horizontal plane; An extension portion is provided on the water outlet trough (21) at one side of the drainage area (12), and a drainage outlet (211) opening downward is provided on the side of the extension portion away from the reaction area (11).

2. The aerobic granular sludge process reaction tank according to claim 1, characterized in that: The inner groove of the water outlet trough (21) is arranged in an inclined manner, and the height of the inner groove of the water outlet trough (21) on the side close to the drainage area (12) is lower than the height of the side away from the drainage area (12).

3. The aerobic granular sludge process reaction tank according to claim 1, characterized in that: Water outlet weir plates (22) are arranged on both sides of the water outlet trough (21).

4. The aerobic granular sludge process reaction tank according to claim 3, characterized in that: The outlet water level is maintained between the high and low points of the notch at the top of the outlet weir plate (22).

5. The aerobic granular sludge process reaction tank according to claim 3, characterized in that: The water outlet weir plate (22) is provided with a plurality of oval holes (221), and bolts are passed through the oval holes (221) on the water outlet weir plate (22) to fix the water outlet weir plate (22) on the water outlet trough (21).

6. The aerobic granular sludge process reaction tank according to claim 3, characterized in that: A triangular, trapezoidal or rectangular notch (222) is arranged on the top of the water outlet weir plate (22).

7. The aerobic granular sludge process reaction tank according to claim 1, characterized in that: The reaction zone (11) is arranged in a rectangular parallelepiped, the drainage zone (12) is arranged on one side of a short side of the reaction zone (11), and the plurality of water outlet grooves (21) are parallel to one side of a long side of the reaction zone (11).

8. The aerobic granular sludge process reaction tank according to claim 1, characterized in that: The drainage area (12) is provided with a drainage pipe (121).

9. The aerobic granular sludge process reaction tank according to claim 1, characterized in that: It also includes a drainage pipeline (6), which is installed between the water outlet component (2) and the mud discharge component (3).

10. The aerobic granular sludge process reaction tank according to claim 1, characterized in that: The aeration assembly (4) comprises an aeration vertical pipe (41), an aeration plate horizontal installation pipe and an aeration plate (42); the aeration plate horizontal installation pipe comprises an outer ring pipe (43) and an inner branch pipe (44); the aeration vertical pipe (41) is connected to the outer ring pipe (43); the outer ring pipe (43) is arranged in a rectangular ring shape; a plurality of inner branch pipes (44) are arranged at equal intervals on the outer ring pipe (43); the inner branch pipes (44) are connected to the outer ring pipe (43); a plurality of aeration plates (42) are arranged at equal intervals on the plurality of inner branch pipes (44).

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