High-volume load concentric circle reactor

Abstract

The utility model discloses a high-volume load concentric circle reactor. Comprising an anoxic tank, an aerobic tank, a water distribution tank, an MBR membrane tank and a clean water tank, the aerobic tank is a closed reaction tank with a cylindrical box-shaped structure; the anoxic tank is of a box-shaped structure with an annular cross section, is arranged outside the aerobic tank in a sleeving manner and is arranged around the aerobic tank; the water distribution tank, the MBR membrane tank and the clean water tank are of box-shaped structures with fan-shaped cross sections and are arranged on the outer side of the anoxic tank; and the water distribution tank, the MBR membrane tank and the clean water tank can be spliced into a complete ring and are sleeved outside the anoxic tank. The concentric circle type arrangement is adopted, the common wall characteristic is effectively utilized, the arrangement is compact, the occupied area is saved, and the manufacturing cost is further reduced. The facility is small in occupied area and low in investment and operation cost.

Description

Technical Field

[0001] The utility model relates to the field of biochemical sewage treatment, in particular to a high volumetric load concentric circle reactor. Background Art

[0002] The reactor is a widely used biochemical equipment, such as the biochemical industrial wastewater treatment system disclosed in the invention patent with publication number CN116553729A.

[0003] However, the prior art usually sets up each functional reaction pool separately, which occupies a large area and has high investment cost.

[0004] Therefore, how to reduce the floor space of facilities, lower the construction cost, and reduce the investment and operating costs has become a technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0005] In view of the above-mentioned defects of the prior art, the utility model provides a high volumetric load concentric circle reactor, the purpose of which is to reduce the footprint of the facility, lower the construction cost, and reduce the investment and operating costs.

[0006] In order to achieve the above purpose, the utility model discloses a high volumetric load concentric reactor, which comprises an anoxic tank, an aerobic tank, a water distribution tank, an MBR membrane tank and a clear water tank.

[0007] Wherein, the aerobic tank is a closed reaction tank with a cylindrical structure;

[0008] The anoxic pool is a box-shaped structure with a ring-shaped cross section, which is arranged outside the aerobic pool and around the aerobic pool;

[0009] The water distribution tank, the MBR membrane tank and the clean water tank are all box-shaped structures with fan-shaped cross sections, and are arranged outside the anoxic tank;

[0010] The water distribution tank, the MBR membrane tank and the clean water tank can be spliced ​​into a complete ring, which is set outside the anoxic tank;

[0011] A lifting pump is provided between the anoxic pool and the aerobic pool, and the muddy-water mixture that has undergone anoxic reaction in the anoxic pool is input into the aerobic pool through the lifting pump;

[0012] In the aerobic pool, an aeration pipe is provided near the bottom, and a water outlet trough is provided near the top;

[0013] The aeration pipe is used to aerate the sewage in the aerobic tank;

[0014] The gaseous products produced after the reaction in the aerobic tank are respectively input into the water distribution tank and the MBR membrane tank through the air pipeline arranged on the top of the aerobic tank, and the muddy water mixture produced after the reaction enters the water outlet tank;

[0015] The gas phase product enters the water distribution tank for stirring;

[0016] The gas phase product enters the MBR membrane pool for membrane scrubbing;

[0017] The water outlet trough inputs the mud-water mixture into the water distribution tank through the water outlet trough pipeline;

[0018] The water distribution tank inputs a part of the mud-water mixture into the anoxic tank, and the other part into the MBR membrane tank;

[0019] The MBR membrane pool is provided with an MBR membrane, and the mud-water mixture is separated into mud and water by the MBR membrane;

[0020] The clean water formed after the mud-water mixture is separated from the water is input into the clean water tank through the water production pump, and the sludge formed after the mud-water mixture is separated from the water is input into the anoxic tank through the sludge return pump;

[0021] The clean water tank is provided with a water outlet pipe, through which the treated clean water is discharged.

[0022] Preferably, the anoxic tank is provided with a water inlet pipe, from which the sewage to be treated is obtained;

[0023] A submersible agitator is arranged in the anoxic tank.

[0024] Preferably, the aeration pipe is connected to an external aeration system via a pipeline.

[0025] Preferably, the air pipeline is provided with an air circuit back pressure valve, and the air outlet is regulated by the air circuit back pressure valve;

[0026] The water outlet trough pipeline is provided with a water channel back pressure valve.

[0027] Preferably, the mud-water mixture in the water distribution tank flows by gravity through a gravity channel into the anoxic tank.

[0028] Preferably, the pressure in the aerobic tank is between 0.1 MPa and 0.4 MPa, so as to remove organic matter and ammonia nitrogen.

[0029] More preferably, the pressure in the aerobic tank is 0.2 MPa.

[0030] Preferably, the sewage input into the anoxic tank, the mud-water mixture input from the water distribution tank, and the sludge input from the MBR membrane tank are denitrified in the anoxic tank.

[0031] Preferably, the MBR membrane pool is connected to a membrane pool aeration system, and the input mud-water mixture is aerated through the membrane pool aeration system.

[0032] Preferably, a backwash pipeline is provided between the clean water tank and the MBR membrane;

[0033] The backwash pipeline is provided with a backwash pump, through which the clean water in the clean water tank is pumped into the MBR membrane, and the MBR membrane is cleaned;

[0034] The backwash pipeline is connected with a citric acid cleaning agent dosing device and a sodium hypochlorite cleaning agent dosing device, and citric acid cleaning agent and sodium hypochlorite cleaning agent are added as needed.

[0035] Beneficial effects of the utility model:

[0036] The utility model adopts the concentric circle arrangement, effectively utilizes the common wall characteristics, has a compact arrangement, saves space, and further reduces the cost. The facility occupies a small area and reduces the investment and operation cost.

[0037] The concept, specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, characteristics and effects of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A schematic diagram of an embodiment of the utility model is shown.

[0039] Figure 2 The layout plan of the anoxic tank, aerobic tank, water distribution tank, MBR membrane tank and clear water tank in one embodiment of the utility model is shown.

[0040] Figure 3 A structural schematic diagram of an embodiment of the utility model is shown.

[0041] Figure 4 Show the utility model Figure 3 Schematic diagram of the AA-axis rotation section.

[0042] Figure 5 Show the utility model Figure 3 Schematic diagram of the mid-BB rotation section. DETAILED DESCRIPTION

[0043] Example

[0044] like Figures 1 to 5 As shown, a high volumetric load concentric circle reactor includes an anoxic tank 1, an aerobic tank 2, a water distribution tank 3, an MBR membrane tank 4 and a clear water tank 5.

[0045] Among them, the aerobic tank 2 is a closed reaction tank with a cylindrical box-shaped structure;

[0046] The anoxic pool 1 is a box-shaped structure with a circular cross section, which is arranged outside the aerobic pool 2 and around the aerobic pool 2;

[0047] The water distribution tank 3, the MBR membrane tank 4 and the clear water tank 5 are all box-shaped structures with fan-shaped cross sections, and are arranged outside the anoxic tank 1;

[0048] The water distribution tank 3, the MBR membrane tank 4 and the clean water tank 5 can be spliced ​​into a complete ring, which is set outside the anoxic tank 1;

[0049] A lifting pump 6 is provided between the anoxic pool 1 and the aerobic pool 2, and the muddy-water mixture that has undergone anoxic reaction in the anoxic pool 1 is input into the aerobic pool 2 through the lifting pump 6;

[0050] In the aerobic pool 2, an aeration pipe is provided near the bottom, and a water outlet trough 203 is provided near the top;

[0051] The aeration pipe is used to aerate the sewage in the aerobic tank 2;

[0052] The gaseous products produced after the reaction in the aerobic tank 2 are respectively input into the water distribution tank 3 and the MBR membrane tank 4 through the air pipeline 201 arranged at the top of the aerobic tank 2, and the muddy water mixed liquid produced after the reaction enters the water outlet tank 203;

[0053] The gas phase product enters the water distribution tank 3 for stirring;

[0054] The gas phase product enters the MBR membrane pool 4 for membrane scrubbing;

[0055] The water outlet tank 203 inputs the mud-water mixture into the water distribution tank 3 through the water outlet tank pipeline 204;

[0056] The water distribution tank 3 inputs part of the mud-water mixture into the anoxic tank 1, and the other part into the MBR membrane tank 4;

[0057] The MBR membrane pool 4 is provided with an MBR membrane 401, through which the muddy and water mixed liquid is separated into muddy and water;

[0058] The clean water formed after the mud-water mixture is separated from the water is input into the clean water tank 5 through the water production pump 8, and the sludge formed after the mud-water separation is input into the anoxic tank 1 through the sludge return pump 9;

[0059] The clean water tank 5 is provided with a water outlet pipe 501 , through which the treated clean water is discharged.

[0060] The utility model places the high-load aerobic pool 2 at the center and arranges it in concentric circles, effectively utilizing the common wall characteristics, making the layout compact, saving space, further reducing the construction cost, and reducing the facility footprint and investment and operation costs.

[0061] In some embodiments, the anoxic pool 1 is provided with a water inlet pipe 101, from which the sewage to be treated is obtained;

[0062] A submersible agitator 102 is provided in the anoxic pool 1 .

[0063] In some embodiments, the aeration pipe is connected to the external aeration system 7 via a pipeline.

[0064] In some embodiments, the air pipeline 201 is provided with an air circuit back pressure valve 202, and the air outlet is regulated by the air circuit back pressure valve 202;

[0065] The water outlet pipeline 204 is provided with a water back pressure valve 205 .

[0066] In some embodiments, the muddy-water mixture in the water distribution tank 3 flows by gravity through the gravity channel 301 into the anoxic tank 1 .

[0067] In some embodiments, the pressure in the aerobic tank 1 is between 0.1 MPa and 0.4 MPa, and organic matter and ammonia nitrogen are removed.

[0068] In some embodiments, the pressure in the aerobic tank 1 is 0.2 MPa.

[0069] In some embodiments, the sewage input into the anoxic tank 1 , the mud-water mixture input from the water distribution tank 3 , and the sludge input from the MBR membrane tank 4 are denitrified in the anoxic tank 1 .

[0070] In some embodiments, the MBR membrane pool 4 is connected to the membrane pool aeration system 402 , and the input mud-water mixture is aerated through the membrane pool aeration system 402 .

[0071] In some embodiments, a backwash pipeline 10 is provided between the clean water tank 5 and the MBR membrane 401;

[0072] The backwash pipeline 10 is provided with a backwash pump 11, and the clean water in the clean water tank 5 is pumped into the MBR membrane 401 through the backwash pump 11, so that the MBR membrane 401 is cleaned;

[0073] The backwash pipeline 10 is connected to a citric acid cleaning agent dosing device 12 and a sodium hypochlorite cleaning agent dosing device 13, and citric acid cleaning agent and sodium hypochlorite cleaning agent are added as needed.

[0074] In practical applications, the utility model is under a pressurized environment of 0.1MPa to 0.4MPa. According to the double membrane theory, the partial pressure of oxygen in the gas phase is increased, and the mass transfer efficiency of oxygen is greatly improved. In addition, in this environment, the aerobic microorganisms have tight flocs and high sludge concentration, and the utilization rate of oxygen is greatly improved, which can reach 30% to 35%, and the sludge concentration can reach 8g / L to 10g / L. It has been verified that the pollutant removal capacity of the reactor can reach a COD volumetric load of 5kgCOD / m3·d to 10kgCOD / m3·d, and ammonia nitrogen volumetric load of 1.5kgNH3-N / m3·d to 3.0kgNH3-N / m3·d.

[0075] The utility model can operate efficiently, and compared with the traditional aerobic aeration, it saves more than 50% of the processing volume and reduces the power consumption by 50%.

[0076] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A high volumetric load concentric reactor; comprising an anoxic tank (1), an aerobic tank (2), a water distribution tank (3), an MBR membrane tank (4) and a clear water tank (5); characterized in that: The aerobic tank (2) is a closed reaction tank with a cylindrical box-shaped structure; The anoxic pool (1) is a box-shaped structure with a ring-shaped cross section, which is arranged outside the aerobic pool (2) and around the aerobic pool (2); The water distribution tank (3), the MBR membrane tank (4) and the clean water tank (5) are all box-shaped structures with fan-shaped cross sections, and are arranged outside the anoxic tank (1); Furthermore, the water distribution tank (3), the MBR membrane tank (4) and the clean water tank (5) can be spliced ​​to form a complete ring, which is sleeved outside the anoxic tank (1); A lifting pump (6) is provided between the anoxic tank (1) and the aerobic tank (2), and the muddy-water mixed liquid that has undergone anoxic reaction in the anoxic tank (1) is input into the aerobic tank (2) through the lifting pump (6); In the aerobic pool (2), an aeration pipe is provided near the bottom, and a water outlet trough (203) is provided near the top; The aeration pipe is used to aerate the sewage in the aerobic tank (2); The aerobic tank (2) is connected to the water distribution tank (3) and the MBR membrane tank (4) respectively through an air pipeline (201) arranged on the top of the aerobic tank (2); The water outlet trough (203) is used to receive the muddy and water mixed liquid produced after the reaction in the aerobic tank (2); The water distribution tank (3) has a stirring function; The MBR membrane pool (4) has a membrane scrubbing function; The water outlet trough (203) is connected to the water distribution tank (3) via a water outlet trough pipeline (204); The water distribution tank (3) is connected to the anoxic tank (1) and the MBR membrane tank (4) respectively; The MBR membrane pool (4) is provided with an MBR membrane (401); The MBR membrane (401) is used to separate mud and water from the mud-water mixture entering the MBR membrane pool (4); A water production pump (8) is provided between the MBR membrane tank (4) and the clean water tank (5), and a sludge return pump (9) is provided between the MBR membrane tank (4) and the anoxic tank (1); The clean water tank (5) is provided with a water outlet pipe (501); The water outlet pipe (501) is used to discharge clean water.

2. The high volumetric load concentric reactor according to claim 1, characterized in that: The anoxic tank (1) is provided with a water inlet pipe (101), and the sewage to be treated is obtained from the water inlet pipe (101); A submersible agitator (102) is provided in the anoxic tank (1).

3. The high volumetric load concentric reactor according to claim 1, characterized in that: The aeration pipe is connected to an external aeration system (7) via a pipeline.

4. The high volumetric load concentric reactor according to claim 1, characterized in that: The air pipeline (201) is provided with an air circuit back pressure valve (202), and the air outlet is regulated by the air circuit back pressure valve (202); The water outlet trough pipeline (204) is provided with a water channel back pressure valve (205).

5. The high volumetric load concentric reactor according to claim 1, characterized in that: The muddy-water mixture in the water distribution tank (3) flows by gravity through the gravity channel (301) into the anoxic tank (1).

6. The high volumetric load concentric reactor according to claim 1, characterized in that: The pressure in the aerobic tank (1) is between 0.1 MPa and 0.4 MPa, and organic matter and ammonia nitrogen are removed.

7. The high volumetric load concentric reactor according to claim 6, characterized in that: The pressure in the aerobic tank (1) is 0.2 MPa.

8. The high volumetric load concentric reactor according to claim 1, characterized in that: The MBR membrane pool (4) is connected to a membrane pool aeration system (402), and the input mud-water mixture is aerated through the membrane pool aeration system (402).

9. The high volumetric load concentric reactor according to claim 1, characterized in that: A backwash pipeline (10) is provided between the clean water tank (5) and the MBR membrane (401); The backwash pipeline (10) is provided with a backwash pump (11), and the clean water in the clean water tank (5) is pumped into the MBR membrane (401) through the backwash pump (11), so that the MBR membrane (401) is cleaned; The backwash pipeline (10) is connected to a citric acid cleaning agent dosing device (12) and a sodium hypochlorite cleaning agent dosing device (13), and citric acid cleaning agent and sodium hypochlorite cleaning agent are added as needed.

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