Biological deodorization device

Abstract

The utility model provides a biological deodorization device, which belongs to the technical field of gas purification and comprises a deodorization box body, a liquid injection pipe group, a circulating pipe group and a liquid discharge pipe group, a filler tank and a liquid storage tank which are spaced up and down and are communicated with each other are arranged in the deodorization box body, and a supporting layer is arranged between the filler tank and the liquid storage tank; a gas inlet and a gas outlet are correspondingly formed in two ends of the top of the deodorization box; the outflow end of the liquid injection pipe group is communicated with the deodorization box body; a first circulating pump is arranged on the liquid injection pipe group; the liquid injection pipe group is used for injecting a spraying liquid and a nutrient solution into the deodorization box body; the inflow end of the circulating pipe group is communicated with the liquid storage tank, and the outflow end extends into the top of the filler tank; a second circulating pump is arranged on the circulating pipe group; the flow inlet end of the liquid discharge pipe group is communicated with the liquid storage tank; and the liquid discharge pipe group is communicated with a waste liquid pool. According to the biological deodorization device provided by the utility model, the injection paths of the spraying liquid and the nutrient liquid are separated from the injection path of the circulating liquid, so that the influence of impurities on the deodorization box body can be reduced.

Description

Technical Field

[0001] This utility model belongs to the field of gas purification technology, and more specifically, it relates to a biological deodorization device. Background Technology

[0002] Pharmaceutical and chemical production processes generate large amounts of wastewater, and the wastewater treatment process produces a large amount of waste gas containing harmful and odorous gases such as hydrogen sulfide and ammonia. Therefore, biological deodorization technology is often used to treat the waste gas. Specifically, on the one hand, spray liquid needs to be injected into the biological deodorization device, and by continuously circulating the spray liquid, the gaseous pollutants are converted into liquid phases. On the other hand, the organic components in the pollutants are captured by biological packing material, thereby purifying the gas.

[0003] To maintain the liquid level in the biological deodorization device, it is necessary to replenish it with water. However, the spray liquid after multiple cycles will carry impurities. In the existing technology, the replenishing liquid and the circulating liquid are often directly connected to the same set of container tanks and injection pumps for the two processes of replenishing water and spraying circulating liquid. Therefore, not only are impurities easily accumulated in the container tank, but the replenishing liquid can also easily carry impurities back into the biological deodorization device when passing through the container tank, thus affecting the deodorization effect of the biological packing. Utility Model Content

[0004] The purpose of this invention is to provide a biological deodorization device, which aims to solve the technical problem that existing biological deodorization devices are prone to introducing impurities into the device during the injection of replenishing liquid, thus affecting the deodorization effect of the biological packing.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a biological deodorization device, comprising:

[0006] The deodorizing chamber has an internally spaced and interconnected packing tank and a liquid storage tank, with a support layer between the packing tank and the liquid storage tank; the top of the deodorizing chamber has an air inlet and an exhaust outlet at both ends.

[0007] The liquid injection pipe assembly has an outlet end connected to the deodorizing box; the liquid injection pipe assembly is equipped with a first circulation pump; the liquid injection pipe assembly is used to inject spray liquid and nutrient solution into the deodorizing box.

[0008] The circulation pipe assembly has an inlet end connected to the storage tank and an outlet end extending into the top of the packing tank; a second circulation pump is installed on the circulation pipe assembly; and

[0009] The inlet end of the drain pipe assembly is connected to the storage tank; the outlet end of the drain pipe assembly is connected to the waste liquid tank.

[0010] In one possible implementation, a first spray pipe assembly is installed inside the deodorizing chamber, and the outlet ends of the injection pipe assembly and the circulation pipe assembly are both connected to the deodorizing chamber through the first spray pipe assembly.

[0011] In some embodiments, the first spray pipe assembly includes:

[0012] The main spray pipe has its inlet end connected to the outlet end of the liquid injection pipe group and the outlet end of the circulation pipe group, respectively, and its outlet end extends into the deodorization box.

[0013] The branch pipe has its inlet end connected to the extension end of the main spray pipe; the branch pipe extends along the length of the deodorizing box; and multiple rotating nozzles are spaced apart along the axial direction of the branch pipe.

[0014] For example, each of the main spray pipes is provided with a first control valve.

[0015] In some embodiments, multiple sets of circulation pipe groups are provided, and the multiple sets of circulation pipe groups are spaced apart along the length direction of the deodorization box; multiple sets of first spray pipe groups are provided, and the multiple sets of first spray pipe groups are connected to the multiple sets of circulation pipe groups in a one-to-one correspondence, and the multiple sets of first spray pipe groups are all connected to the liquid injection pipe group.

[0016] In one possible implementation, a second spray pipe assembly and a third spray pipe assembly are installed inside the deodorization box. The outlet end of the injection pipe assembly is connected to the deodorization box through the second spray pipe assembly, and the outlet end of the circulation pipe assembly is connected to the deodorization box through the third spray pipe assembly.

[0017] In one possible implementation, the injection tubing assembly includes:

[0018] The water inlet pipe has a water tank connected to its inlet end, and the water tank is used to connect to the water replenishment system.

[0019] A nutrient tube is arranged in parallel with the water injection pipe; the inlet end of the nutrient tube is connected to the nutrient solution tank.

[0020] The first circulation pump is installed on both the water injection pipe and the nutrient pipe.

[0021] In some embodiments, the water injection pipe is connected to the water tank through multiple connecting pipes, and each connecting pipe is equipped with a set of the first circulation pump.

[0022] For example, each of the connecting pipes is provided with a second control valve; the nutrient pipe is provided with a third control valve.

[0023] In one possible implementation, the biological deodorization device further includes a buffer sedimentation tank, and the drain pipe assembly includes:

[0024] The first drain pipe has its inlet end connected to the storage tank and its outlet end inserted into the bottom of the buffer sedimentation tank.

[0025] The second drain pipe has its inlet end connected to the upper side of the buffer sedimentation tank, and its outlet end used to connect to the waste liquid tank.

[0026] Compared with the prior art, the solution shown in this application embodiment firstly provides a storage tank, which allows the circulating liquid to undergo initial sedimentation, thus preventing impurities from circulating within the circulation pipe group. Simultaneously, the bottom circulating liquid containing more impurities is discharged through the drain pipe group, reducing the accumulation of impurities in the deodorization box. In addition, by correspondingly setting up injection pipe groups and circulation pipe groups, a separate input mode for circulating liquid, spray liquid, and nutrient solution is established. Furthermore, by separately setting up a first circulation pump and a second circulation pump, the injection paths of spray liquid and nutrient solution are separated from the injection path of circulating liquid, preventing the spray liquid and nutrient solution from introducing impurities into the deodorization box after entering the circulation liquid path, thereby reducing the impact of impurities on the deodorization box. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of the biological deodorization device provided in an embodiment of the present invention.

[0029] In the diagram: 1. Deodorizing chamber; 11. Packing tank; 12. Storage tank; 13. Air inlet; 14. Exhaust outlet; 15. Pretreatment tank; 16. Support layer; 2. Injection pipe assembly; 21. First circulation pump; 22. Water injection pipe; 23. Nutrient pipe; 24. Connecting pipe; 25. Second control valve; 26. Third control valve; 27. Nutrient solution tank; 3. Circulation pipe assembly; 31. Second circulation pump; 4. Drainage pipe assembly; 41. Waste liquid tank; 42. First drain pipe; 43. Second drain pipe; 44. Buffer sedimentation tank; 5. First spray pipe assembly; 51. Main spray pipe; 52. Branch pipe; 53. Rotary nozzle; 54. First control valve; 6. Water tank. Detailed Implementation

[0030] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0031] It should be noted that when an element is referred to as being "set on" another element, it can be directly on or indirectly on that other element. It should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships 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.

[0032] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a number" means two or more, unless otherwise explicitly specified.

[0033] Please see Figure 1 The biological deodorization device provided by this utility model is described below. The biological deodorization device includes a deodorization chamber 1, an injection pipe assembly 2, a circulation pipe assembly 3, and a drain pipe assembly 4. The deodorization chamber 1 is provided with a packing pool 11 and a storage pool 12 that are spaced apart and interconnected, and a support layer 16 is provided between the packing pool 11 and the storage pool 12. An air inlet 13 and an exhaust outlet 14 are respectively provided at both ends of the top of the deodorization chamber 1. The outlet end of the injection pipe assembly 2 is connected to the deodorization chamber 1. A first circulation pump 21 is provided on the injection pipe assembly 2. The injection pipe assembly 2 is used to inject spray liquid and nutrient solution into the deodorization chamber 1. The inlet end of the circulation pipe assembly 3 is connected to the storage pool 12, and the outlet end extends into the top of the packing pool 11. A second circulation pump 31 is provided on the circulation pipe assembly 3. The inlet end of the drain pipe assembly 4 is connected to the storage pool 12. The outlet end of the drain pipe assembly 4 is connected to the waste liquid pool 41.

[0034] It should be noted that when there is a lot of sludge and impurities settled at the bottom of the deodorization chamber 1, the long-term accumulation of the sludge and impurities will cause the sludge and impurities to transform into an anaerobic state, producing an odor, which will affect the deodorization effect of the biological packing.

[0035] It should be understood that the injection pipe assembly 2 can be specifically used to inject spray liquid and nutrient solution into the deodorization box 1 to ensure the supply of substances required during the deodorization process; the circulation pipe assembly 3 can circulate the liquid in the storage tank 12 to the top of the packing tank 11, which helps to improve the contact efficiency between the liquid phase and the gas phase and better convert gaseous pollutants into liquid phase; the drain pipe assembly 4 facilitates the discharge of used liquid into the waste liquid tank 41, and at the same time facilitates the initial settling of the spray liquid in the storage tank 12, reducing the circulation of impurities and avoiding excessive accumulation of impurities in the device.

[0036] By adding aerobic sludge nutrient solution into the deodorization chamber 1 through the first circulation pump 21, the sludge concentration and sludge activity in the biological packing material inside the deodorization chamber 1 can be guaranteed.

[0037] Specifically, the packing tank 11 is divided into a pretreatment tank 15 and a biological packing tank 11. Both the pretreatment tank 15 and the biological packing tank 11 are connected to the storage tank 12. The pretreatment tank 15 is used to pretreat odor pollutants, and the biological packing tank 11 is used to eliminate odor pollutants through biological absorption and transformation.

[0038] Furthermore, the device also includes a pretreatment system and a pre-spray pipe assembly. The pretreatment system includes a pre-storage tank, a pre-spray main pipe and multiple pre-spray branch pipes, a circulation pump on the pre-spray main pipe and a rotary nozzle on the pre-spray branch pipes. Optionally, two sets of circulation pumps are provided on the pre-spray main pipe, with one set in operation and the other set on standby, and a set of control valves is provided at the outlet end of each set of circulation pumps.

[0039] It should be understood that after the device is assembled, spray liquid needs to be injected into the deodorizing chamber 1 through the injection pipe assembly to bring the liquid level in the deodorizing chamber 1 to a preset height, and a preset amount of nutrient solution needs to be injected; and before introducing odorous gas, the circulation pipe assembly 3 needs to be opened to ensure the spray liquid circulation, thereby forming a circulating liquid, which then circulates through the circulation pipe assembly 3; after the device has been working for a period of time, when the liquid level drops below the preset range, it needs to be replenished through the water replenishment system. In this application, spray liquid can be injected again through the injection pipe assembly to achieve liquid level replenishment and correction.

[0040] Compared with the prior art, the biological deodorization device provided by this utility model firstly includes a storage tank 12, which allows the circulating liquid to undergo initial sedimentation in the storage tank 12 to prevent impurities from circulating in the circulation pipe group 3. At the same time, the bottom circulating liquid containing more impurities is discharged by the drain pipe group 4 to reduce the accumulation of impurities in the deodorization box 1. In addition, by correspondingly setting the injection pipe group 2 and the circulation pipe group 3, a separate liquid input mode for circulating liquid, spray liquid and nutrient solution is established. By setting the first circulation pump 21 and the second circulation pump 31 respectively, the injection path of spray liquid and nutrient solution is separated from the injection path of circulating liquid, so as to prevent the spray liquid and nutrient solution from entering the circulation liquid path and bringing impurities into the deodorization box 1, thereby reducing the impact of impurities on the deodorization box 1.

[0041] Please see Figure 1 In some possible embodiments, a first spray pipe assembly 5 is installed inside the deodorizing box 1, and the outlet end of the injection pipe assembly 2 and the outlet end of the circulation pipe assembly 3 are both connected to the deodorizing box 1 through the first spray pipe assembly 5.

[0042] By setting up a first spray pipe, spraying liquid, nutrient solution and circulating liquid can be sprayed, expanding the contact area between liquid and gaseous pollutants and improving deodorization efficiency.

[0043] By setting the first spray pipe group 5, the need to set multiple dispersed spray structures in the deodorization box 1 is avoided, reducing the complexity of the equipment. It also allows the spray liquid, nutrient solution and circulating liquid to be distributed more evenly in the deodorization box 1, ensuring that the entire packing pool 11 area can be effectively sprayed, thereby improving the removal effect of pollutants in the gas.

[0044] Please see Figure 1 In some embodiments, the first spray pipe group 5 includes a main spray pipe 51 and a branch pipe 52; the inlet end of the main spray pipe 51 is connected to the outlet end of the liquid injection pipe group 2 and the outlet end of the circulation pipe group 3 respectively, and the outlet end extends into the deodorization box 1; the inlet end of the branch pipe 52 is connected to the inlet end of the main spray pipe 51; the branch pipe 52 extends along the length direction of the deodorization box 1; a plurality of rotating nozzles 53 are spaced apart along the axial direction on the branch pipe 52.

[0045] Through the coordinated action of the main spray pipe 51 and the branch pipe 52, the spray liquid and circulating liquid can be evenly distributed along the entire length of the deodorization chamber 1. When dealing with a long deodorization chamber 1, this ensures that the packing material in each area can come into contact with sufficient liquid, thereby improving the overall deodorization effect.

[0046] By setting multiple rotating nozzles 53, on the one hand, the spraying range of the circulating liquid and the spraying liquid can be expanded; on the other hand, the rotating nozzles 53 can make the sprayed liquid form a rotating spray shape, thereby increasing the contact area between the liquid and the gas.

[0047] Please see Figure 1 For example, each main spray pipe 51 is provided with a first control valve 54.

[0048] By setting the first control valve 54, the flow rate in the corresponding main spray pipe 51 can be easily controlled. According to the deodorization needs of different areas in the deodorization box 1, the flow rate of the corresponding main spray pipe 51 can be adjusted. Specifically, when the concentration of odor pollutants in a certain area is high, the flow rate of the corresponding main spray pipe 51 in that area can be appropriately increased to increase the supply of circulating liquid, thereby removing pollutants more effectively.

[0049] Please see Figure 1 In some embodiments, multiple sets of circulation pipe groups 3 are provided, and the multiple sets of circulation pipe groups 3 are spaced apart along the length direction of the deodorization box 1; multiple sets of first spray pipe groups 5 are provided, and the multiple sets of first spray pipe groups 5 are connected to the multiple sets of circulation pipe groups 3 in a one-to-one correspondence, and the multiple sets of first spray pipe groups 5 are all connected to the liquid injection pipe group 2.

[0050] By setting multiple sets of circulation pipe groups 3, the spraying and circulation can be more evenly distributed along the length of the deodorizing chamber 1. For example, for a large deodorizing chamber 1, multiple sets of circulation pipe groups 3 and the first spray pipe group 5 can ensure that the biological packing material inside the entire deodorizing chamber 1 can be fully sprayed and circulated, avoiding poor deodorization in local areas and comprehensively improving the overall performance of the deodorizing device.

[0051] Since each group of circulation pipes 3 corresponds to a group of second circulation pumps 31, each group can be controlled independently, thus forming a closed internal circulation at each group of circulation pipes 3. The operation of each group of second circulation pumps 31 is not affected by other second circulation pumps 31, which facilitates continuous spraying of each corresponding area inside the biofilter bed composed of biological packing material, ensuring continuous circulation in each area.

[0052] Please see Figure 1 In some possible embodiments, a second spray pipe assembly and a third spray pipe assembly are installed inside the deodorization box 1. The outlet end of the liquid injection pipe assembly 2 is connected to the deodorization box 1 through the second spray pipe assembly, and the outlet end of the circulation pipe assembly 3 is connected to the deodorization box 1 through the third spray pipe assembly.

[0053] By setting up a second spray pipe group and a third spray pipe group respectively, the flow paths of the liquid injection pipe group 2 and the circulation pipe group 3 can form an independent spray model, which can replenish the spray liquid while the circulating liquid is being sprayed, thus effectively improving work efficiency; preferably, this structure is suitable for occasions where the deodorization box 1 has a large volume.

[0054] Optionally, the structures of the second and third spray pipe groups can be the same as those of the first spray pipe group 5.

[0055] Please see Figure 1 In some possible embodiments, the injection pipe assembly 2 includes a water injection pipe 22 and a nutrient pipe 23; the inlet end of the water injection pipe 22 is connected to a water tank, which is used to communicate with the water replenishment system; the nutrient pipe 23 is arranged in parallel with the water injection pipe 22; the inlet end of the nutrient pipe 23 is connected to the nutrient solution tank 27; wherein, both the water injection pipe 22 and the nutrient pipe 23 are equipped with a first circulation pump 21.

[0056] The inlet end of the water injection pipe 22 is connected to the water tank for water replenishment, and the inlet end of the nutrient pipe 23 is connected to the nutrient solution tank 27. This separate arrangement ensures that the water replenishment and nutrient solution replenishment processes are independent of each other. In actual operation, the flow rates of the water injection pipe 22 and the nutrient pipe 23 can be controlled separately according to the growth requirements of the biological packing material in the deodorization chamber 1 and the required deodorization effect. This ensures that the biological packing material has sufficient water and nutrients, while avoiding some problems that may arise from the mixing of nutrient solution and water, such as uneven nutrient solution concentration affecting the activity of the biological filter bed formed by the biological packing material.

[0057] Please see Figure 1 In some embodiments, the water injection pipe 22 is connected to the water tank through multiple connecting pipes 24, and each connecting pipe 24 is equipped with a set of first circulation pumps 21.

[0058] By installing a set of first circulation pumps 21 on each connecting pipe 24, the reliability of liquid injection into the water injection pipe 22 is increased. If one of the circulation pumps or connecting pipes 24 fails, the other circulation pumps and connecting pipes 24 can still work normally, ensuring that the water injection pipe 22 can continuously inject water into the deodorizing box 1, and avoiding the deodorizing device from failing to operate normally due to the failure of the water injection pipe 22.

[0059] Please see Figure 1 For example, each connecting pipe 24 is provided with a second control valve 25; the nutrient pipe 23 is provided with a third control valve 26.

[0060] By setting the second control valve 25 and the third control valve 26 accordingly, the flow rate in the connecting pipe 24 and the feeding pipe 23 can be effectively controlled, and adjustments can be made as needed.

[0061] Please see Figure 1 In some possible embodiments, the biological deodorization device further includes a buffer sedimentation tank 44, and the drain pipe group 4 includes a first drain pipe 42 and a second drain pipe 43; the inlet end of the first drain pipe 42 is connected to the storage tank 12, and the outlet end is inserted into the bottom of the buffer sedimentation tank 44; the inlet end of the second drain pipe 43 is connected to the upper side of the buffer sedimentation tank 44, and the outlet end is used to connect to the waste liquid tank 41.

[0062] By setting up a buffer sedimentation tank 44, the waste liquid discharged from the storage tank 12 can be pre-treated. This allows some larger particulate impurities in the waste liquid to settle in the buffer sedimentation tank 44, preventing direct discharge into the waste liquid tank 41 and causing blockage. It also facilitates the recovery or subsequent treatment of useful components in the waste liquid, improving the rationality and environmental friendliness of the entire biological deodorization device's waste liquid treatment.

[0063] The first drain pipe 42 is equipped with a fourth control valve, and the second drain hanging pipe is equipped with a fifth control valve. The fourth and fifth control valves are used to control the flow rate on the corresponding pipes.

[0064] Optionally, this application also includes a control component, and a level gauge, a pH meter, and a pressure sensor on the corresponding pipeline installed inside the biological deodorization chamber 1. The control component is electrically connected to the level gauge, pH meter, and pressure sensor to acquire information on the liquid level, pressure, and corresponding pH levels within the deodorization chamber 1. Furthermore, the control component is electrically connected to the first control valve 54, the second control valve 25, the third control valve 26, the fourth control valve, and the fifth control valve, and is also electrically connected to the circulating pump structure. The control component adjusts the opening and closing of the corresponding circulating pump by adjusting the valve opening of the corresponding control valve, thereby adjusting the flow rate on the corresponding pipeline, thus achieving intelligent continuous spraying. Specifically, the control component includes a central processing unit, a storage unit, and a data processing unit, and is an integrated structure of multiple control elements. Each control element is used to implement the aforementioned control processes. The control principle and structure are existing technologies and will not be elaborated further here.

[0065] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A biological deodorizing device, characterized by, The application relates to a deodorization box body (1) which comprises a filler pool (11) and a liquid storage pool (12) which are spaced apart and communicate with each other, a support layer (16) is arranged between the filler pool (11) and the liquid storage pool (12), air inlets (13) and air outlets (14) are arranged at the top of the deodorization box body (1), a liquid injection pipe group (2) is arranged in communication with the deodorization box body (1), a first circulating pump (21) is arranged on the liquid injection pipe group (2), the liquid injection pipe group (2) is used for injecting spraying liquid and nutrient liquid into the deodorization box body (1), a circulating pipe group (3) is arranged in communication with the liquid storage pool (12) and extends into the filler pool (11), a second circulating pump (31) is arranged on the circulating pipe group (3), and a liquid discharge pipe group (4) is arranged in communication with the liquid storage pool (12) and is connected with a waste liquid pool (41). The deodorization box body (1) is provided with a first spraying pipe group (5), the liquid injection pipe group (2) and the circulating pipe group (3) are connected with the deodorization box body (1) through the first spraying pipe group (5). The first spraying pipe group (5) comprises a main spraying pipe (51) which is connected with the liquid injection pipe group (2) and the circulating pipe group (3), a branch pipe (52) which is connected with the main spraying pipe (51) and extends along the length direction of the deodorization box body (1) and is provided with a plurality of rotating nozzles (53) which are arranged along the axial direction of the branch pipe (52), and a first control valve (54) which is arranged on each main spraying pipe (51). The circulating pipe group (3) is provided with a plurality of groups, the first spraying pipe group (5) is provided with a plurality of groups and is connected with the circulating pipe group (3) in one-to-one correspondence, and the first spraying pipe group (5) is connected with the liquid injection pipe group (2). The deodorization box body (1) is provided with a second spraying pipe group and a third spraying pipe group, the liquid injection pipe group (2) is connected with the deodorization box body (1) through the second spraying pipe group, and the circulating pipe group (3) is connected with the deodorization box body (1) through the third spraying pipe group.

2. The biological deodorizing device according to claim 1, wherein The liquid injection pipe group (2) comprises a water injection pipe (22) which is connected with a water tank (6) and is connected with a water supplement system, a nutrient pipe (23) which is arranged in parallel with the water injection pipe (22) and is connected with a nutrient liquid tank (27), and the first circulating pump (21) which is arranged on the water injection pipe (22) and the nutrient pipe (23).

3. The biological deodorizing device according to claim 2, wherein The water injection pipe (22) and the water tank (6) are connected through a plurality of connecting pipes (24), and the first circulating pump (21) is arranged on each connecting pipe (24). ​ ​ 4. The biological deodorizing device according to claim 3, wherein ​ 5. The biological deodorizing device according to claim 2, wherein ​ 6. The biological deodorizing device according to claim 1, wherein ​ 7. The biological deodorizing device according to claim 1, wherein ​ ​ ​ ​ 8. The biological deodorizing device according to claim 7, wherein ​ 9. The biological deodorizing device according to claim 8, wherein A second control valve (25) is arranged on each of the connecting pipes (24); and a third control valve (26) is arranged on the nutrient pipe (23).

10. The biological deodorizing device according to claim 1, wherein The biological deodorization device further comprises a buffer sediment tank (44), and the liquid discharge pipe group (4) comprises: A first liquid discharge pipe (42) having an inlet end communicating with the liquid storage pool (12) and an outlet end penetrating into a bottom of the buffer sediment tank (44); A second liquid discharge pipe (43) having an inlet end connected to an upper side of the buffer sediment tank (44) and an outlet end used for communicating with a waste liquid pool (41).

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