Novel anaerobic ammonia oxidation granular sludge device

Abstract

The utility model discloses a novel anaerobic ammoxidation granular sludge device, which relates to the technical field of biological sewage treatment, and comprises a tank body, a primary three-phase separator and a secondary three-phase separator, a conical water distribution cover is arranged in the tank body, a water distribution pipe is arranged on the surface of the conical water distribution cover, and the secondary three-phase separator is arranged in the tank body. The water distribution pipe comprises a plurality of annular pipes and connecting pipes, the plurality of annular pipes are sequentially arranged on the conical water distribution cover from bottom to top from large to large, and every two annular pipes which are adjacent up and down are connected through the corresponding connecting pipe, so that the conical water distribution cover and the water distribution pipe are arranged, and the water distribution pipe is arranged on the conical water distribution cover in a conical manner; compared with a mode of arranging water distribution pipes on a two-dimensional plane in the prior art, more water distribution pipes can be arranged in the same occupied area through a conical three-dimensional pipe arrangement mode, so that more water outlet points are provided, the density is higher, the water flow distribution is more uniform, and the sewage treatment effect is better.

Description

Technical Field

[0001] This utility model relates to the field of wastewater biological treatment technology, specifically a novel anaerobic ammonia oxidation granular sludge device. Background Technology

[0002] In the field of wastewater denitrification, anaerobic ammonia oxidation (AAO) has become a popular wastewater treatment process in recent years. This process refers to the biochemical process in which anaerobic ammonia oxidizing bacteria react to produce nitrate nitrogen and nitrogen gas under anaerobic or hypoxic conditions, using ammonia nitrogen as an electron donor and nitrite nitrogen as an electron acceptor. Compared with traditional wastewater denitrification processes, AAO has advantages such as lower sludge production, no need for organic carbon sources and aeration, and no greenhouse gas production. It is a denitrification process with significant economic and environmental benefits at present.

[0003] The water distribution device plays a crucial role in the anammox granular sludge treatment plant. Its main function is to distribute wastewater evenly into the reactor, ensuring that the anammox granular sludge can grow uniformly. In existing anammox granular sludge treatment plants, the water distribution pipes are mostly laid out on a two-dimensional plane. The density of the water distribution holes is usually sparse due to space limitations. This results in uneven distribution of wastewater in the reaction tank, insufficient contact between the wastewater and anammox bacteria, and low reaction efficiency of the anammox reactor. Utility Model Content

[0004] The purpose of this invention is to provide a novel anaerobic ammonia oxidation granular sludge device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A novel anaerobic ammonia oxidation granular sludge device includes a tank, a primary three-phase separator, and a secondary three-phase separator. A conical water distribution hood is installed inside the tank, and water distribution pipes are installed on the surface of the conical water distribution hood. Each water distribution pipe includes several annular pipes and connecting pipes. The annular pipes are installed sequentially from largest to smallest on the conical water distribution hood, and adjacent annular pipes are connected by connecting pipes. One end of the water distribution pipe is connected to a wastewater pipe installed inside the tank below the conical water distribution hood. The primary three-phase separator and the secondary three-phase separator are installed sequentially from bottom to top inside the tank above the conical water distribution hood. A constant temperature layer is provided on the outer wall of the tank, and a constant temperature water pipe is installed within the constant temperature layer. The lower and upper ends of the constant temperature water pipe are connected to an inlet pipe and an outlet pipe, respectively. A circulating water pump is installed in the middle of the inlet pipe. The other ends of the inlet and outlet pipes are connected to the outlet and inlet of a constant temperature water tank located on one side of the tank, respectively.

[0007] As a further embodiment of this utility model: the sewage pipe is connected to the lowest annular pipe of the water distribution pipe.

[0008] As a further improvement of this utility model, each of the annular tubes has several water outlet holes at its bottom.

[0009] As a further improvement of this utility model, the constant temperature water tank is arranged in a spiral shape and closely attached to the outer wall of the tank body.

[0010] As a further improvement of this utility model, a ladder is installed on the outer wall of the tank.

[0011] As a further improvement of this utility model: a drain pipe is provided on one side of the upper part of the tank, and an exhaust pipe is installed on the top of the tank.

[0012] As a further embodiment of this utility model: a fluidized bed reaction chamber is provided between the conical water distribution hood and the first-stage three-phase separator; a deep purification reaction chamber is provided between the first-stage three-phase separator and the second-stage three-phase separator; and a gas chamber is provided between the top of the tank of the second-stage three-phase separator.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model sets up a conical water distribution cover and water distribution pipes. The water distribution pipes are arranged in a conical shape on the conical water distribution cover. Compared with the existing technology of arranging water distribution pipes on a two-dimensional plane, this utility model can arrange more water distribution pipes in the same area by using a conical three-dimensional pipe arrangement. This results in more water outlets and higher density, thus making the water flow distribution more uniform and the sewage treatment effect better.

[0015] 2. This utility model, by setting up a constant temperature layer, constant temperature water pipe, outlet pipe, inlet pipe, constant temperature water tank and circulating water pump, allows water in the constant temperature water tank to be transported to the constant temperature water pipe through the circulating water pump and inlet pipe. The constant temperature water pipe then transfers heat to the tank body, thereby maintaining a constant temperature inside the tank. This allows anaerobic bacteria inside the tank to multiply at a suitable temperature, resulting in better wastewater treatment. Attached Figure Description

[0016] Figure 1 This is a front sectional view of a novel anaerobic ammonia oxidation granular sludge device.

[0017] Figure 2 This is a schematic diagram of the overall structure of a novel anaerobic ammonia oxidation granular sludge device.

[0018] Figure 3 This is a novel anaerobic ammonia oxidation granular sludge device. Figure 1 A schematic diagram of the overall structure of the water pipe.

[0019] 1. Tank body; 2. Conical water distribution hood; 3. Water distribution pipe; 4. Sewage pipe; 5. Primary three-phase separator; 6. Secondary three-phase separator; 7. Fluidized bed reaction chamber; 8. Deep purification reaction chamber; 9. Gas chamber; 10. Constant temperature layer; 11. Constant temperature water pipe; 12. Water outlet pipe; 13. Water inlet pipe; 14. Constant temperature water tank; 15. Circulating water pump; 16. Exhaust pipe; 17. Ladder; 18. Connecting pipe; 19. Water outlet; 20. Drainage pipe; 21. Circular pipe; 22. Sludge discharge hole. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-3 In this embodiment of the invention, a novel anaerobic ammonia oxidation granular sludge device includes a tank 1, a primary three-phase separator 5, and a secondary three-phase separator 6. A conical water distribution hood 2 is installed inside the tank 1. A water distribution pipe 3 is installed on the surface of the conical water distribution hood 2. The water distribution pipe 3 includes several annular pipes 21 and connecting pipes 18. The annular pipes 21 are installed sequentially from largest to smallest on the conical water distribution hood 2. Adjacent annular pipes 21 are connected by connecting pipes 18. The water distribution pipe 3 is connected to one end of a sewage pipe 4 installed inside the tank 1 below the conical water distribution hood 2. The primary three-phase separator 5 and the secondary three-phase separator 6 are installed sequentially from bottom to top above the conical water distribution hood 2 inside the tank 1. Pipe 4 is connected to the lowest annular pipe 21 of the water distribution pipe 3. This connection allows sewage to flow from bottom to top in the water distribution pipe 3. Each annular pipe 21 has several outlet holes 19 at its bottom. The downward-facing outlet holes 19 reduce the probability of the outlet holes 19 being blocked by sludge, making it easier for the sludge to be flushed away by the sewage. The water distribution pipe 3 of this invention is arranged in a conical shape on the conical water distribution cover 2. Compared with the existing technology of arranging the water distribution pipe 3 on a two-dimensional plane, this invention uses a conical three-dimensional pipe arrangement method to arrange more water distribution pipes 3 in the same area, resulting in more outlet points and higher density, thus making the water flow distribution more uniform and the sewage treatment effect better.

[0022] Please see Figure 2A constant temperature layer 10 is provided on the outer wall of the tank body 1. A constant temperature water pipe 11 is provided inside the constant temperature layer 10. The lower and upper ports of the constant temperature water pipe 11 are connected to an inlet pipe 13 and an outlet pipe 12, respectively. A circulating water pump 15 is installed in the middle of the inlet pipe 13. The other end of the inlet pipe 13 and the other end of the outlet pipe 12 are connected to the outlet and inlet of a constant temperature water tank 14 located on one side of the tank body 1, respectively. The constant temperature water tank 14 is model TMJ-9715. The water in the constant temperature water tank 14 can be transported to the constant temperature water pipe 11 through the circulating water pump 15 and the inlet pipe 13. The heat is transferred to the tank body 1 through the constant temperature water pipe 11, thereby controlling the temperature inside the tank body 1. This allows the anaerobic bacteria inside the tank body 1 to multiply at a suitable temperature, thus improving the wastewater treatment effect.

[0023] The constant temperature water tank 14 is spirally attached to the outer wall of the tank body 1. The spiral arrangement allows for a larger contact area between the constant temperature water pipe 11 and the tank body 1, resulting in higher heat transfer efficiency.

[0024] Please see Figure 2 A ladder 17 is installed on the outer wall of the tank body 1. The ladder 17 allows maintenance personnel to easily climb onto the tank body 1 to connect the exhaust pipe 16 to the gas receiving or processing equipment, or to connect the drain pipe 20 to the water receiving equipment.

[0025] Please see Figure 1-2 A drain pipe 20 is provided on the upper side of the tank body 1. The drain pipe 20 is used to discharge the water after the reaction. An exhaust pipe 16 is installed on the top of the tank body 1. The exhaust pipe 16 is used to discharge the gas generated during the reaction. A sludge discharge hole 22 is installed on the lower side of the tank body 1. The sludge discharge hole 22 is used to discharge the sludge after use. The sludge discharge hole 22 is closed during use. A fluidized bed reaction chamber 7 is set between the conical water distribution hood 2 and the first-stage three-phase separator 5. A deep purification reaction chamber 8 is set between the first-stage three-phase separator 5 and the second-stage three-phase separator 6. A gas chamber 9 is set between the second-stage three-phase separator 6 and the top of the tank body 1. This part is the same as the existing UASB reactor structure and is known content.

[0026] The working principle of this utility model is as follows:

[0027] During use, external sewage is transported to tank 1 through sewage pipe 4, and then the sewage flows out through water distribution pipe 3 on conical water distribution hood 2. Anaerobic bacteria use NH3-N as electron donor and NO3-N as electron acceptor to convert ammonia nitrogen in the sewage into nitrogen gas. The nitrogen gas is discharged from exhaust pipe 16, and the treated water is discharged from drain pipe 20. During the sewage treatment process, circulating water pump 15 is turned on to transport water in constant temperature water tank 14 to constant temperature water pipe 11 through water inlet pipe 13. The hot water in constant temperature water tank 14 exchanges energy with tank 1 during the flow of constant temperature water pipe 11, so that the temperature in tank 1 and constant temperature water pipe 11 eventually become consistent or close to consistent. Then the water in constant temperature water pipe 11 flows back to constant temperature water tank 14 through water outlet pipe 12. When the returned water is lower than the constant temperature value set by constant temperature water tank 14, constant temperature water tank 14 will automatically heat the water to achieve constant temperature regulation.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A novel anaerobic ammonia oxidation granular sludge treatment device, comprising a tank (1), a primary three-phase separator (5), and a secondary three-phase separator (6), characterized in that: A conical water distribution hood (2) is installed inside the tank (1). A water distribution pipe (3) is installed on the surface of the conical water distribution hood (2). The water distribution pipe (3) includes several annular pipes (21) and connecting pipes (18). The several annular pipes (21) are installed sequentially from largest to smallest on the conical water distribution hood (2). Two adjacent annular pipes (21) are connected by connecting pipes (18). One end of the water distribution pipe (3) is connected to a sewage pipe (4) installed inside the tank (1) below the conical water distribution hood (2). The conical water distribution hood (2) is located inside the tank (1). A first-stage three-phase separator (5) and a second-stage three-phase separator (6) are installed sequentially from bottom to top on the upper part of the tank (1). A constant temperature layer (10) is provided on the outer wall of the tank (1). A constant temperature water pipe (11) is provided inside the constant temperature layer (10). The lower and upper ports of the constant temperature water pipe (11) are respectively connected to an inlet pipe (13) and an outlet pipe (12). A circulating water pump (15) is installed in the middle of the inlet pipe (13). The other end of the inlet pipe (13) and the other end of the outlet pipe (12) are respectively connected to the outlet and inlet of the constant temperature water tank (14) located on one side of the tank (1).

2. The novel anaerobic ammonia oxidation granular sludge device according to claim 1, characterized in that: The sewage pipe (4) is connected to the lowest annular pipe (21) in the water distribution pipe (3).

3. The novel anaerobic ammonia oxidation granular sludge device according to claim 1, characterized in that: Each of the annular tubes (21) has several water outlet holes (19) at its bottom.

4. The novel anaerobic ammonia oxidation granular sludge device according to claim 1, characterized in that: The constant temperature water tank (14) is spirally attached to the outer wall of the tank body (1).

5. A novel anaerobic ammonia oxidation granular sludge treatment device according to claim 1, characterized in that: A ladder (17) is installed on the outer wall of the tank (1).

6. A novel anaerobic ammonia oxidation granular sludge treatment device according to claim 1, characterized in that: A drain pipe (20) is provided on one side of the upper part of the tank (1), and an exhaust pipe (16) is installed on the top of the tank (1).

7. A novel anaerobic ammonia oxidation granular sludge treatment device according to claim 1, characterized in that: A fluidized bed reaction chamber (7) is provided between the conical water distribution hood (2) and the first-stage three-phase separator (5). A deep purification reaction chamber (8) is provided between the first-stage three-phase separator (5) and the second-stage three-phase separator (6). A gas chamber (9) is provided between the top of the tank body (1) and the second-stage three-phase separator (6).

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