A deodorization device for aerobic composting fermentation

Abstract

This utility model relates to the field of aerobic composting fermentation technology, specifically to a deodorization device for aerobic composting fermentation. It includes a spray tank with a spraying mechanism at the top, which sprays a microbial treatment liquid into the tank. One end of the spray tank has an air inlet pipe for air intake, and the other end has an air outlet pipe for exhaust. A water collection tank is located at the bottom of the spray tank. Multiple guide plate assemblies and a liquid storage plate are arranged between the air inlet and outlet pipes. Each guide plate assembly includes a first guide plate and a second guide plate arranged in parallel. A first gas channel is located at the upper part of the first guide plate, and a second gas channel is located at the lower part of the second guide plate. A liquid storage plate is located between the first and second guide plates to allow odorous gases to pass through, and the liquid storage plate is used to adsorb the microbial treatment liquid. This utility model extends the contact time between the odorous gas and the deodorizing medium, increases the contact area between the odorous gas and the deodorizing medium, and improves the efficiency of air deodorization.

Description

Technical Field

[0001] This utility model relates to the field of aerobic composting fermentation technology, specifically to a deodorization device for aerobic composting fermentation. Background Technology

[0002] With the acceleration of urbanization, the amount of sludge produced by sewage treatment plants continues to increase, making sludge treatment and disposal increasingly prominent issues. Aerobic composting, as a common sludge resource utilization technology, can transform organic matter into stable humus, achieving sludge reduction, harmlessness, and resource recovery. However, during aerobic composting, the decomposition of organic matter by microorganisms produces a large amount of odorous gases, mainly including hydrogen sulfide (H2S), ammonia (NH3), thiols, and volatile organic compounds (VOCs). These malodorous gases not only affect the surrounding environment but may also harm human health, thus requiring effective treatment.

[0003] Currently, deodorization methods in aerobic fermentation workshops for sludge composting are mainly divided into chemical deodorization and biological deodorization. Traditional biological filters or spray towers suffer from uneven gas distribution and insufficient contact between odorous gases and the deodorization media (water, microbial membranes), leading to unstable removal efficiency. There is an urgent need for a new type of deodorization device that allows for longer contact time between odorous gases and the deodorization media, resulting in higher deodorization efficiency and improved odor control efficiency to meet increasingly stringent environmental emission standards. Summary of the Invention

[0004] This invention addresses the problems of insufficient contact between odor and deodorizing medium and unstable deodorization efficiency in existing biological deodorization methods by providing a deodorization device for aerobic composting fermentation. This device extends the contact time between odor and deodorizing medium, increases the contact area between odor and deodorizing medium, and improves the efficiency of air deodorization.

[0005] An aerobic composting deodorization device includes a spray tank with a spraying mechanism at the top. The spraying mechanism sprays a microbial treatment liquid into the spray tank. One end of the spray tank has an air inlet pipe for air intake, and the other end has an air outlet pipe for exhaust. The microbial treatment liquid is used to absorb odorous gases such as hydrogen sulfide and ammonia. A water collection tank is provided at the bottom of the spray tank. Multiple guide plate assemblies and a liquid storage plate are provided between the air inlet of the air inlet pipe and the exhaust outlet of the air outlet pipe. A gas channel is formed between the guide plate assemblies and the inner wall of the spray tank. An inlet and outlet of a fluid channel are formed between the air inlet pipe and the air outlet pipe.

[0006] The baffle assembly includes a first baffle and a second baffle arranged in parallel. A first gas channel is provided at the upper part of the first baffle, and a second gas channel is provided at the lower part of the second baffle. A liquid storage plate is disposed between the first and second baffles to allow odorous gases to pass through. The liquid storage plate is used to adsorb the microbial treatment liquid. The baffle assembly is used to extend the residence time of odorous gases in the spray tank.

[0007] Furthermore, a circulation mechanism is provided at the bottom of the spray tank. The circulation mechanism includes a circulating water pump, a circulation pipe placed in a collection tank, and circulating nozzles installed on the circulation pipe. The inlet of the circulating water pump is inserted into the microbial treatment solution stored in the collection tank, and the outlet is connected to the circulation pipe. The circulation mechanism is used to increase the fluidity of the microbial treatment solution.

[0008] Furthermore, the circulation pipe has a "U"-shaped structure, and the circulation nozzles are evenly spaced on the side surface of the circulation pipe. The water sprayed from the circulation nozzles circulates at the bottom of the spray tank.

[0009] Furthermore, the spraying mechanism includes a spraying water pump, a suction pipe, a branch pipe, and atomizing nozzles mounted on the branch pipe. The inlet end of the spraying water pump is connected to the suction pipe, and the outlet end is connected to the branch pipe. The lower end of the suction pipe is inserted into the microbial treatment liquid stored in the collection tank. The spraying mechanism is used to spray mist into the spraying tank, increasing the contact area between air and water mist.

[0010] Furthermore, the spray tank is equipped with a removable cover on top, and a liquid storage plate is fixed to the lower surface of the cover. The liquid storage plate is used to absorb the microbial treatment liquid.

[0011] Furthermore, the liquid storage plate is made of non-woven fabric, and a counterweight strip for counterweighting is fixed to the lower end of the non-woven fabric. The non-woven fabric adsorbs the microbial treatment liquid and absorbs the odors that pass through it.

[0012] Furthermore, a slag collection trough is installed at one end of the water collection tank near the air inlet pipe. The depth of the slag collection trough is greater than the depth of the water collection tank, which facilitates the sedimentation of impurities into the slag collection trough.

[0013] Furthermore, the first and second guide plates are suspended within the spray tank. A ventilation slot is provided at the lower part of the second guide plate, and a first gas channel is formed between the top of the first guide plate and the top of the tank. A second gas channel is formed at the ventilation slot. An "S"-shaped airflow channel is formed within the spray tank through the first and second guide plates.

[0014] Furthermore, the microbial treatment solution is located at the bottom quarter of the first and second guide plates, and the ventilation slot is located at the bottom third of the second guide plate. The microbial treatment solution seals the lower ends of the first and second guide plates.

[0015] The beneficial effects of this utility model through the above technical solution are as follows:

[0016] This invention features a guide plate assembly and a liquid storage plate between the air inlet and outlet pipes, forming an "S"-shaped odor guiding channel inside the spray tank. The microorganisms attached to the liquid storage plate come into full contact with the odor passing through it, thus significantly extending the residence time of the odor in the spray tank and the contact area between the odor and the microbial treatment liquid, thereby improving the deodorization efficiency.

[0017] This invention features a spraying mechanism at the top of the spray tank and a circulation mechanism at the bottom, which allows the microbial treatment liquid inside the spray tank to circulate continuously, increasing the fluidity of the microbial treatment liquid, reducing pipe blockage caused by reagent precipitation, and better maintaining the activity of microorganisms. This reduces operating costs and simplifies the maintenance process. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the rear structure of this utility model;

[0019] Figure 2 This is a cross-sectional schematic diagram of the present invention. Figure 1 ;

[0020] Figure 3 This is a cross-sectional schematic diagram of the present invention. Figure 2 ;

[0021] The attached diagram is labeled as follows: 1 is the spray tank; 2 is the tank cover; 3 is the air inlet pipe; 4 is the air outlet pipe; 5 is the first guide plate; 6 is the second guide plate; 7 is the circulating water pump; 8 is the circulating pipe; 9 is the circulating nozzle; 10 is the spray water pump; 11 is the suction pipe; 12 is the metal filter screen; 13 is the sealing ring; 14 is the branch pipe; 15 is the atomizing nozzle; 16 is the liquid storage plate; 17 is the counterweight bar; and 18 is the slag collection tank. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0023] like Figures 1-3 As shown in the figure, this embodiment provides a deodorization device for aerobic composting fermentation, including a spray tank 1, wherein a circulating spraying mechanism, a guide plate group and a liquid storage plate 16 are provided in the spray tank 1.

[0024] The top of the spray tank 1 is provided with a detachable tank cover 2. One end of the spray tank 1 is provided with an air inlet pipe 3 for air intake and the other end is provided with an air outlet pipe 4 for exhaust. The air inlet pipe 3 and the air outlet pipe 4 form the inlet and outlet of a fluid channel. The bottom of the spray tank 1 is provided with a water collection tank, which contains a microbial treatment liquid for the absorption of hydrogen sulfide and ammonia.

[0025] The circulating spray mechanism includes a spray mechanism and a circulation mechanism, which are used to increase the fluidity of the microbial treatment solution.

[0026] A spraying mechanism is installed on the top of the spray tank 1. The spraying mechanism sprays microbial treatment liquid into the spray tank 1. The spraying mechanism includes a spray water pump 10, a suction pipe 11, a branch pipe 14, and atomizing nozzles 15 installed on the branch pipe 14. The spray water pump 10 is fixed to the upper surface of the tank cover 2. The inlet end of the spray water pump 10 is equipped with a suction pipe 11, and the lower end of the suction pipe 11 passes through the tank cover 2 and inserts into the microbial treatment liquid stored in the collection tank. The outlet end of the spray water pump 10 is connected to the branch pipe 14, such as... Figure 1 As shown, the outlet end of the spray water pump 10 is fixed with a main pipe, and multiple branch pipes 14 are arranged in parallel on the main pipe. Atomizing nozzles 15 are installed on the lower surface of the branch pipes 14, and the lower end of the atomizing nozzles 15 penetrates the pool cover 2 and extends into the spray pool 1, so that the outlet end of the spray water pump 10 can spray through the atomizing nozzles 15 installed on the lower surface of the branch pipes 14, which increases the contact area between air and water mist and improves the efficiency of air deodorization.

[0027] Specifically, a metal filter screen 12 is fitted onto the lower end of the suction pipe 11. The metal filter screen 12 is submerged in the microbial treatment liquid stored in the spray tank 1. A sealing ring 13 is interference-fitted onto the upper end of the metal filter screen 12, and the sealing ring 13 is interference-fitted onto the lower part of the suction pipe 11. The microbial treatment liquid entering the suction pipe 11 is filtered by the metal filter screen 12 installed at the lower end of the suction pipe 11, preventing large particles from entering and clogging the atomizing nozzle 15.

[0028] To improve the filtration effect, a sludge collection trough 18 is installed at one end of the water collection tank near the air inlet pipe 3. The depth of the sludge collection trough 18 is greater than the depth of the water collection tank, so that impurities can settle into the sludge collection trough 18.

[0029] The bottom of the spray tank 1 is equipped with a circulation mechanism, which includes a circulating water pump 7, a circulation pipe 8 placed in a water collection tank, and circulating nozzles 9 installed on the circulation pipe 8. Figure 3 As shown, the circulating water pump 7 is fixed outside the spray tank 1. The inlet of the circulating water pump 7 passes through the inner wall of the spray tank 1 and is inserted into the microbial treatment liquid stored in the collection tank. The outlet is connected to the circulation pipe 8. Specifically, the circulation pipe 8 has a "U"-shaped structure. The circulation nozzles 9 are evenly spaced on the side surface of the circulation pipe 8. The water sprayed from the circulation nozzles 9 circulates at the bottom of the spray tank 1, increasing the fluidity of the microbial treatment liquid.

[0030] Multiple guide plate groups are provided between the air inlet of the air inlet pipe 3 and the exhaust port of the air outlet pipe 4, and the guide plate groups form a gas channel with the inner wall of the spray tank 1.

[0031] The guide plate assembly includes a first guide plate 5 and a second guide plate 6 arranged in parallel. The first guide plate 5 has a first gas channel at its upper part and the second guide plate 6 has a second gas channel at its lower part, forming an "S"-shaped air guide channel.

[0032] Specifically, the first guide plate 5 and the second guide plate 6 are suspended in the spray tank 1. There is a gap between the upper part of the first guide plate 5 and the lower surface of the tank cover 2. The lower part of the second guide plate 6 is provided with a ventilation groove. As one possible implementation, such as... Figure 2 As shown, the lower third of the second guide plate 6 is broken, and the break point is the ventilation slot. A first gas channel is formed between the top of the first guide plate 5 and the top of the pool, and a second gas channel is formed at the ventilation slot. In this embodiment, three first guide plates 5 are arranged in parallel, and two second guide plates 6 are arranged in parallel, with the two second guide plates 6 and the three first guide plates 5 staggered.

[0033] A liquid storage plate 16 is provided between the first guide plate 5 and the second guide plate 6 to allow odorous gas to pass through. The liquid storage plate 16 is used to adsorb microbial treatment liquid.

[0034] Specifically, a liquid storage plate 16 is fixed to the lower surface of the pool cover 2. The liquid storage plate 16 is made of non-woven fabric, and a counterweight strip 17 for counterweighting is fixed to the lower end of the non-woven fabric. When the microbial treatment liquid is sprayed onto the surface of the non-woven fabric, the microorganisms adhere to the non-woven fabric. Thus, when air passes over the surface of the non-woven fabric, it is convenient for the microorganisms to adsorb hydrogen sulfide and ammonia, allowing the non-woven fabric to absorb hydrogen sulfide and ammonia in the air in combination with the spray, thereby improving the deodorization efficiency.

[0035] In use, the microbial treatment liquid is located at the bottom quarter of the first guide plate 5 and the second guide plate 6, and the ventilation slot is located at the bottom third of the second guide plate 6. This allows the microbial treatment liquid to block the lower ends of the first guide plate 5 and the second guide plate 6, facilitating the formation of an "S"-shaped airflow channel inside the spray tank 1 through the upper end of the first guide plate 5 and the lower part of the second guide plate 6. This prolongs the residence time of the air containing hydrogen sulfide and ammonia in the spray tank 1, making it easier for the hydrogen sulfide and ammonia to be absorbed by the sprayed microbial treatment liquid, thereby achieving the purpose of deodorization in the sludge plant fermentation workshop.

[0036] Meanwhile, the microbial treatment liquid is sprayed from the top-mounted atomizing nozzles 15, increasing the contact area between air and water mist. The non-woven fabric absorbs the microbial treatment liquid and the passing odors, and combined with the spray, it absorbs hydrogen sulfide and ammonia from the air, improving deodorization efficiency. The sprayed liquid enters the collection tank and is sprayed out through the circulation pipe 8 via circulation nozzles 9 installed at equal intervals on its surface, causing the microbial treatment liquid to circulate at the bottom of the spray tank 1, increasing its fluidity.

[0037] The embodiments described above are merely preferred embodiments of this utility model and are not intended to limit the scope of implementation of this utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the patent claims of this utility model should be included within the scope of the patent application of this utility model.

Claims

1. An odor removal device for aerobic compost fermentation, comprising a spraying pool (1), a spraying mechanism is arranged on the top of the spraying pool (1), the spraying mechanism sprays microbial treatment liquid into the spraying pool (1), one end of the spraying pool (1) is provided with an air inlet pipe (3) for air inlet, and the other end is provided with an air outlet pipe (4) for air outlet, characterized in that, A water collection pool is provided at the bottom of the spray tank (1). Multiple guide plate groups and liquid storage plates (16) are provided between the air inlet of the air inlet pipe (3) and the exhaust port of the air outlet pipe (4). A gas channel is formed between the guide plate group and the inner wall of the spray tank (1). The guide plate assembly includes a first guide plate (5) and a second guide plate (6) arranged in parallel. The first guide plate (5) has a first gas channel at its upper part and the second guide plate (6) has a second gas channel at its lower part. A liquid storage plate (16) for odor gas to pass through is provided between the first guide plate (5) and the second guide plate (6). The liquid storage plate (16) is used to adsorb microbial treatment liquid.

2. The deodorizing device for aerobic compost fermentation according to claim 1, characterized by The bottom of the spray tank (1) is provided with a circulation mechanism, which includes a circulating water pump (7), a circulation pipe (8) placed in the water collection tank, and a circulating nozzle (9) set on the circulation pipe (8). The inlet end of the circulating water pump (7) is inserted into the microbial treatment liquid stored in the water collection tank, and the outlet end is connected to the circulation pipe (8).

3. The deodorizing device for aerobic compost fermentation according to claim 2, characterized by The circulation pipe (8) has a "U" shaped structure, and the circulation nozzles (9) are evenly spaced on the side surface of the circulation pipe (8).

4. The deodorizing device for aerobic compost fermentation according to claim 1, characterized by The spraying mechanism includes a spraying water pump (10), a suction pipe (11), a branch pipe (14), and an atomizing nozzle (15) installed on the branch pipe (14). The inlet end of the spraying water pump (10) is connected to the suction pipe (11), and the outlet end is connected to the branch pipe (14). The lower end of the suction pipe (11) is inserted into the microbial treatment liquid stored in the water collection tank.

5. The deodorizing device for aerobic compost fermentation according to claim 1, characterized by The top of the spray tank (1) is provided with a detachable tank cover (2), and a liquid storage plate (16) is fixed on the lower surface of the tank cover (2).

6. The deodorizing device for aerobic compost fermentation according to claim 1, characterized by The liquid storage plate (16) is made of non-woven fabric, and a counterweight strip (17) for counterweighting is fixed at the lower end of the non-woven fabric.

7. The deodorizing device for aerobic compost fermentation according to claim 1, characterized by A slag collection trough (18) is installed at one end of the water collection pool near the air inlet pipe (3), and the depth of the slag collection trough (18) is greater than the depth of the water collection pool.

8. The deodorizing device for aerobic compost fermentation according to claim 1, characterized by The first guide plate (5) and the second guide plate (6) are suspended in the spray tank (1). A ventilation groove is provided at the lower part of the second guide plate (6). A first gas channel is formed between the top of the first guide plate (5) and the top of the tank, and a second gas channel is formed at the ventilation groove.

9. The deodorizing device for aerobic compost fermentation according to claim 8, characterized by The microbial treatment liquid is located at the bottom quarter of the first guide plate (5) and the second guide plate (6), and the ventilation slot is located at the bottom third of the second guide plate (6).

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