Sewage anaerobic reactor

Abstract

The utility model discloses a sewage anaerobic reactor, which belongs to the technical field of biological sewage treatment, solves the problem that the sewage treatment effect is influenced as sludge of the sewage anaerobic reactor cannot be contacted with treated water during external circulation, and comprises a reactor shell, a reaction area is arranged in the reactor shell, and a water inlet is formed in the reaction area. A reaction area is arranged in the reactor shell, a sediment backflow area is arranged above the reaction area, a water distribution area is arranged below the reaction area, a sludge device is arranged in the reaction area and comprises a supporting frame, the supporting frame is arranged on the inner wall of the reactor shell, a connecting block is fixedly arranged on the supporting frame, and the connecting block is fixedly connected with the water distribution area. The connecting block is movably connected with a sludge internal circulation mechanism capable of rotating around the connecting block in a vertical plane, the sludge internal circulation mechanism comprises a rotating frame connected with the connecting block, and a plurality of circulation collecting plates are mounted on the rotating frame. The anaerobic reactor disclosed by the utility model has a sludge internal circulation function, can keep contact and reaction with treated water at any time, and is higher in efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment equipment, and particularly relates to a sewage anaerobic reactor. Background Art

[0002] A sewage anaerobic reactor is a high-speed anaerobic reactor that uses biological methods to treat wastewater. It is developed on the basis of the upflow anaerobic sludge bed, adopts an external circulation system and granular sludge technology, and is an improved type of the traditional expanded granular sludge bed reactor, belonging to an efficient anaerobic reactor. This reactor makes full use of the anaerobic granular sludge technology, provides sufficient upward flow velocity for the reactor through external circulation, maintains the expansion of the granular sludge bed and the mixing inside the reactor, and improves the treatment efficiency of the reactor. The sewage anaerobic reactor has structures such as a water distribution system, a reaction zone, a circulation system, a separator, a gas chamber, and a discharge system.

[0003] In the existing sewage anaerobic reactor, after the sludge precipitates after a certain period of reaction, the sludge also needs to be circulated, transported from the sedimentation area back to the bottom of the reactor, and then enter the reaction zone for circulation and re-contact with the treated water. However, when the sludge is transported in the circulation pipeline, it is in the external circulation system and cannot play a role in water treatment inside the reactor, shortening the contact time between the treated water and the sludge, resulting in a longer treatment time to ensure the treatment effect and increasing the cycle time required for the process. Summary of the Utility Model

[0004] The purpose of the utility model is as follows:

[0005] To solve the problem that the sludge of the sewage anaerobic reactor in the prior art cannot contact the treated water during external circulation, which affects the sewage treatment effect, a sewage anaerobic reactor is provided with a sludge internal circulation structure, so that the sludge is always inside the reactor, increasing the reaction contact time.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A sewage anaerobic reactor includes a reactor housing. A reaction zone is arranged inside the reactor housing, a sedimentation and reflux zone is arranged above the reaction zone, and a water distribution zone is arranged below the reaction zone. A sludge device is installed in the reaction zone. The sludge device includes a support frame, the support frame is installed on the inner wall of the reactor housing, a connecting block is fixedly installed on the support frame, and a sludge internal circulation mechanism that can rotate around the connecting block in a vertical plane is movably connected to the connecting block. The sludge internal circulation mechanism includes a rotating frame connected to the connecting block, and a plurality of circulation collecting plates are installed on the rotating frame.

[0008] Furthermore, the cross-section of the circulating collection plate is V-shaped, and a plurality of sludge collection cells are provided on the surface of the circulating collection plate. A plurality of precipitation auxiliary flow plates are installed in the precipitation and reflux zone, and the precipitation auxiliary flow plates are installed above the circulating collection plate and arranged along an inclined direction.

[0009] Furthermore, the rotating frame is circular, and the circulating collection plate is installed inside the circular rotating frame. There are four or six groups of the circulating collection plates arranged on the rotating frame.

[0010] Furthermore, a plurality of water distribution pipes are installed in the water distribution zone. A reflux discharge pipe is connected to the top of the side of the reactor housing. The reflux discharge pipe is connected to a buffer water tank. The buffer water tank is connected to a reflux pump. The reflux pump is respectively connected to a drain pipe and a reflux inlet pipe. An electric valve is installed on the reflux inlet pipe, and the reflux inlet pipe is communicated with the water distribution pipes.

[0011] Furthermore, a separation mechanism is installed above the precipitation and reflux zone. An air chamber is provided above the separation mechanism. An exhaust pipe is connected to the reactor housing at the top of the air chamber.

[0012] Furthermore, a sludge discharge pipe is connected to the bottom of the side of the reactor housing.

[0013] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0014] Through the sludge internal circulation mechanism of the present utility model, the sludge descending in the upper precipitation and reflux zone falls into the circulating collection plate of the internal circulation mechanism, and rotates to the lower part of the reaction zone with the circulating collection plate following the rotating frame, and falls downward under the action of gravity, contacts the treated water entering the reactor in the water distribution zone, and rises under the driving action of the water flow until it falls again in the precipitation and reflux zone, forming an internal circulation of the sludge, so that the sludge always remains inside the reactor to function, always remains in contact and reaction with the treated water, thereby significantly improving the sewage treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the overall structure diagram of the present utility model;

[0016] Figure 2 is the structure diagram of the sludge internal circulation mechanism of the present utility model;

[0017] Figure 3 is Figure 2 the side view of the sludge internal circulation mechanism of

[0018] Markings in the figure: 1 - Reactor shell, 2 - Reaction zone, 3 - Precipitation reflux zone, 4 - Water distribution zone, 5 - Support frame, 6 - Connecting block, 7 - Sludge internal circulation mechanism, 8 - Rotating frame, 9 - Circulation collection plate, 10 - Precipitation auxiliary flow plate, 11 - Water distribution pipe, 12 - Reflux discharge pipe, 13 - Buffer water tank, 14 - Reflux pump, 15 - Drain pipe, 16 - Reflux inlet pipe, 17 - Electric valve, 18 - Separation mechanism, 19 - Gas chamber, 20 - Exhaust pipe, 21 - Sludge discharge pipe. Detailed implementation mode

[0019] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0020] An anaerobic sewage reactor includes a reactor shell 1. A reaction zone 2 is arranged inside the reactor shell 1. A precipitation reflux zone 3 is arranged above the reaction zone 2. A water distribution zone 4 is arranged below the reaction zone 2. A sludge device is installed in the reaction zone 2. The sludge device includes a support frame 5. The support frame 5 is installed on the inner wall of the reactor shell 1. A connecting block 6 is fixedly installed on the support frame 5. A sludge internal circulation mechanism 7 that can rotate around the connecting block 6 in a vertical plane is movably connected to the connecting block 6. The sludge internal circulation mechanism 7 includes a rotating frame 8 connected to the connecting block 6. Multiple circulation collection plates 9 are installed on the rotating frame 8.

[0021] The cross-section of the circulation collection plate 9 is V-shaped. A plurality of sludge collection grids are arranged on the surface of the circulation collection plate 9. A plurality of precipitation auxiliary flow plates 10 are installed in the precipitation reflux zone 3. The precipitation auxiliary flow plates 10 are installed above the circulation collection plate 9 and are arranged along an inclined direction.

[0022] The rotating frame 8 is circular. The circulation collection plates 9 are installed inside the circular rotating frame 8. Four or six groups of circulation collection plates 9 are arranged on the rotating frame 8.

[0023] A plurality of water distribution pipes 11 are installed in the water distribution zone 4. The top of the side of the reactor shell 1 is connected with a reflux discharge pipe 12. The reflux discharge pipe is connected with a buffer water tank 13. The buffer water tank 13 is connected with a reflux pump 14. The reflux pump 14 is respectively connected with a drain pipe 15 and a reflux inlet pipe 16. An electric valve 17 is installed on the reflux inlet pipe 16. The reflux inlet pipe 16 is communicated with the water distribution pipe 11.

[0024] A separation mechanism 18 is installed above the precipitation reflux zone 3. A gas chamber 19 is arranged above the separation mechanism 18. The reactor shell 1 at the top of the gas chamber 19 is connected with an exhaust pipe 20.

[0025] The bottom of the side of the reactor shell 1 is connected with a sludge discharge pipe 21.

[0026] The working process of the anaerobic reactor of the present utility model is as follows:

[0027] The sewage to be treated (hereinafter referred to as the treated water) enters through the water distribution pipe 11 of the water distribution area 4 connected by an external water inlet pipe, and flows upward in the reactor, contacts the sludge therein, and reacts with the anaerobic microorganisms in the sludge to decompose and generate products such as gas. The sludge rises under the drive of the water flow until it reaches below the separation mechanism 18, separates from the treated water, stays in the precipitation and reflux area 3, descends under the action of the precipitation auxiliary flow plate 10, falls into the circulation collection plate 9 of the internal circulation mechanism, rotates with the rotating frame 8 to below the reaction area 2 through the circulation collection plate 9, falls downward under the action of gravity, contacts the treated water entering the reactor in the water distribution area 4 again, and rises upward under the drive of the water flow until it falls again in the precipitation and reflux area 3, forming an internal sludge circulation.

[0028] The treated water separated by the separation mechanism 18 at the top inside the reactor flows out from the reflux discharge pipe 12, is buffered by the buffer water tank 13, pumped out by the reflux pump 14, and flows into the reactor for secondary treatment or is discharged after the treatment is completed. The gas generated by the reaction stays in the gas chamber 19 at the top and is discharged through the exhaust pipe 20.

[0029] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A sewage anaerobic reactor, characterized in that: The invention comprises a reactor shell (1), wherein a reaction zone (2) is arranged in the reactor shell (1), a sedimentation reflux zone (3) is arranged above the reaction zone (2), and a water distribution zone (4) is arranged below the reaction zone (2). A sludge device is installed in the reaction zone (2), and the sludge device comprises a support frame (5), wherein the support frame (5) is installed on the inner wall of the reactor shell (1), a connecting block (6) is fixedly installed on the support frame (5), and a sludge internal circulation mechanism (7) is movably connected to the connecting block (6) and can rotate around the connecting block (6) in a vertical plane, and the sludge internal circulation mechanism (7) comprises a rotating frame (8) connected to the connecting block (6), and a plurality of circulation collection plates (9) are installed on the rotating frame (8).

2. The anaerobic sewage reactor according to claim 1, characterized in that: The cross section of the circulation collection plate (9) is V-shaped, and a plurality of sludge collection grids are provided on the surface of the circulation collection plate (9). A plurality of sedimentation auxiliary flow plates (10) are installed in the sedimentation reflow zone (3), and the sedimentation auxiliary flow plates (10) are installed above the circulation collection plate (9) and are arranged in an inclined direction.

3. The sewage anaerobic reactor according to claim 1, characterized in that: The rotating frame (8) is in the shape of a ring. The circulating collecting plates (9) are installed on the inner side of the rotating frame (8) in the shape of a ring. Four or six groups of circulating collecting plates (9) are arranged on the rotating frame (8).

4. The anaerobic sewage reactor according to claim 1, characterized in that: A plurality of water distribution pipes (11) are installed in the water distribution area (4); a reflux discharge pipe (12) is connected to the top of the side of the reactor shell (1); the reflux discharge pipe (12) is connected to a buffer water tank (13); the buffer water tank (13) is connected to a reflux pump (14); the reflux pump (14) is respectively connected to a drain pipe (15) and a reflux discharge pipe (16); an electric valve (17) is installed on the reflux discharge pipe (16); and the reflux discharge pipe (16) is in communication with the water distribution pipe (11).

5. The sewage anaerobic reactor according to claim 1, characterized in that: A separation mechanism (18) is installed above the precipitation reflux zone (3), an air chamber (19) is arranged above the separation mechanism (18), and an exhaust pipe (20) is connected to the reactor shell (1) at the top of the air chamber (19).

6. The sewage anaerobic reactor according to claim 1, characterized in that: The bottom of the side of the reactor shell (1) is connected with a mud discharge pipe (21).

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