Improved biological filter

Abstract

The utility model discloses an improved biological filter which comprises an exhaust fan, a spraying area, a demisting area, a spraying filler area, a spraying water pump, a water collecting area and a biological filter shell, the exhaust fan is communicated with an air inlet, the air inlet is positioned at the top of a humidifying filler area of the biological filter and is communicated with the spraying area, and the spraying area is communicated with the demisting area. And the spraying area is divided into a humidifying filler spraying area and a spraying filler spraying area according to filler properties. According to the utility model, the operation cost is low, nutrient substances can be recycled through the circulation of the spraying pump in the device, the whole operation is simple, the operation is safe, the scheme can realize automatic operation, the condition of microorganisms in the filler only needs to be manually and regularly checked, the MBBR filler area and the polyurethane filler area in the filler area are both placed in the stainless steel wire mesh, and the operation is convenient. And the filler can be taken out from the access hole and is convenient to replace, and water pump jamming and pipeline blockage caused by the fact that the filler falls into water can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of biological deodorization, in particular to an improved biological filter. Background Technique

[0002] When some non-renewable resources such as mineral resources and coal resources are utilized, a large amount of waste gas may be generated. Once these waste gases are discharged into the atmosphere, it will not only cause air pollution, but also affect people's physical health. The existing main treatment technologies for unorganized waste gas include thermal oxidation method, physicochemical method, low-temperature plasma method, plant extract method, biological filtration method, etc. Among them, the thermal oxidation method can effectively treat almost all pollutants, but it will produce secondary pollution; the physicochemical method has the advantages of wide treatment range and simple operation, etc., but secondary pollutants are generated, and the operation cost is relatively high; the low-temperature plasma method has a simple process, simple operation, low operation cost, wide adaptation range, and high degree of automation, but it is not applicable to flammable and explosive places, and the power consumption is large, and the operation cost is high; the biological filtration method has a low operation cost, is easy to automate control, and does not produce secondary pollution.

[0003] At present, the existing biological deodorization process belongs to the biological filtration method, which uses the biodegradation effect of microorganisms to absorb and degrade odor substances to achieve the purpose of deodorization. However, the existing biological filter needs to input a certain amount of carbon source and other nutrient sources during operation, and the maintenance and operation are relatively complex, resulting in a relatively high operation cost. Content of the Utility Model

[0004] The purpose of the utility model is to solve the problem in the prior art that a certain amount of carbon source and other nutrient sources need to be input, and the maintenance and operation are relatively complex, resulting in relatively high operation and labor costs, and an improved biological filter is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] An improved biological filter, including an exhaust fan, a spraying area, a demisting area, a spraying packing area, a spraying water pump, a water collection area and a biological filter housing. The exhaust fan is communicated with an air inlet, and the air inlet is located at the top of the humidifying packing area of the biological filter. The air inlet is communicated with the spraying area. The spraying area is divided into a humidifying packing spraying area and a spraying packing spraying area according to the nature of the packing. A humidifying packing area is arranged below the humidifying packing spraying area in the spraying area, and the humidifying packing area is mainly divided into a polyurethane packing area in the upper layer and an MBBR packing area in the lower layer. A spraying packing area is arranged below the spraying packing spraying area in the spraying area. The spraying water pump is communicated with a spraying component, and the water source of the spraying component is the sewage in the water collection area. The spraying component is distributed at the top of the spraying area, and the spraying component sprays the humidifying packing area and the spraying packing area below the spraying area.

[0007] Preferably, the MBBR packing area and the polyurethane packing area are separated from each other. The spray packing area is mainly filled with volcanic rock packing. The volcanic rock packing is not only loose and porous, has a large specific surface area, but also has a certain adsorption capacity, and is an excellent biological carrier.

[0008] Preferably, the exhaust fan conveys the extracted air, which passes through the humidifying packing area from top to bottom through the air inlet, enters the water collection area, and then enters the spray packing area from bottom to top.

[0009] Preferably, a liquid level sensor is installed in the water collection area. The liquid level sensor detects the liquid level in the water collection area. The liquid level height is measured by the liquid level sensor and water is replenished. The sewage in the water collection area is discharged regularly.

[0010] Preferably, both the MBBR packing area and the polyurethane packing area in the humidifying packing area below the spray area are placed in a stainless steel wire mesh to prevent the packing from falling into the water. And a maintenance opening is provided at a position of the biological filter housing close to the upper part of the humidifying packing area.

[0011] Preferably, a demister is arranged inside the demisting area. The treated waste gas passes through the demister at the top of the spray packing area and is discharged from the chimney.

[0012] Preferably, the water collection area feeds back the liquid level through the liquid level sensor. When the spray water pump starts, it needs to receive the liquid level signal of the liquid level sensor to replenish or drain water.

[0013] Compared with the prior art, the present utility model provides an improved biological filter, which has the following beneficial effects:

[0014] 1. For this improved biological filter, the operation cost is relatively low. This equipment does not need to add or only needs to add a small amount of nutrients. The spray water source is the sewage in the water collection area, which circulates in the device through the spray pump. The nutrients can be recycled. At the same time, ammonia, organic substances, etc. in the waste gas are dissolved in the water and can also be used as nutrients for biological strains. Moreover, the overall operation is simple and the operation is safe. This scheme can realize automatic operation. Only the condition of microorganisms in the packing needs to be checked regularly by manual. And both the MBBR packing area and the polyurethane packing area in the packing area are placed in a stainless steel wire mesh. A maintenance opening is provided at a position of the biological filter housing close to the upper part of the humidifying packing area, and the packing can be taken out from the maintenance opening, which is convenient for replacement and can avoid the packing falling into the water and causing the water pump to jam and the pipeline to be blocked.

[0015] 2. For this improved biological filter, the treatment effect is good. The incoming gas first passes through the humidifying packing area, where the gas is preliminarily filtered and dissolved. Then it reacts in the spray packing area later. The packing filled in the two packing areas has an extremely high specific surface area and can attach a large number of microorganisms. At the same time, the polyurethane packing also has a high water absorption capacity and can fully absorb the gas that is easily soluble in water. Therefore, the treatment efficiency is relatively high. Description of the Drawings

[0016] Figure 1 This is a schematic structural diagram of an improved biological filter proposed by the present utility model.

[0017] In the figure: 1, exhaust fan; 2, air inlet; 3, MBBR packing area; 4, polyurethane packing area; 5, spraying area; 6, spraying assembly; 7, demisting area; 8, spraying packing area; 9, spraying water pump; 10, water collection area; 11, liquid level sensor; 12, biological filter housing; 13, volcanic rock packing. Detailed Implementation Manner

[0018] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0019] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0020] Refer to Figure 1, An improved biological filter, comprising an exhaust fan 1, a spray zone 5, a demisting zone 7, a spray packing zone 8, a spray water pump 9, a water collection zone 10 and a biological filter housing 12. The exhaust fan 1 is connected to an air inlet 2, and the air inlet 2 is connected to the spray zone 5. The spray zone 5 is divided into a humidifying packing spray zone and a spray packing spray zone according to the nature of the packing. Below the humidifying packing spray zone in the spray zone 5, there is a humidifying packing zone, and the humidifying packing zone is mainly divided into a polyurethane packing zone 4 in the upper layer and an MBBR packing zone 3 in the lower layer. Both the MBBR packing zone 3 and the polyurethane packing zone 4 in the humidifying packing zone below the spray zone 5 are placed in a stainless steel wire mesh. And a maintenance opening is provided at a position of the biological filter housing 12 close to the upper part of the humidifying packing zone. Under the normal operation condition of the exhaust fan 1, the packing presents a certain loose state in the stainless steel container, and the container of the packing can be drawn out of the reactor device and can be opened and closed. When opened, the biological condition of the packing can be manually checked. When closed, it can withstand a certain impact and the packing will not scatter, effectively avoiding the problem that the packing scatters and blocks the water pump and pipelines. Below the spray packing spray zone in the spray zone 5, there is a spray packing zone 8. The MBBR packing zone 3 and the polyurethane packing zone 4 are separated from each other. The spray packing zone 8 is mainly filled with volcanic rock packing 13. The volcanic rock packing 13, as a biological carrier, can increase the contact area and improve the efficiency of biological treatment. At the same time, the volcanic rock also has an adsorption capacity, which can improve the treatment efficiency of the biological filter. The spray water pump 9 is connected to a spray assembly 6, and the spray assembly 6 is distributed at the top of the spray zone 5. The spray assembly 6 sprays the humidifying packing zone and the spray packing zone 8 below the spray zone 5. The humidifying packing zone also serves as an air inlet zone. The upper layer packing, polyurethane sponge packing, at this place has good water absorption and a large specific surface area. Therefore, the spray density here is relatively large. When the waste gas passes through this place, the waste gases such as hydrogen sulfide and ammonia that are easily soluble in water can be fully absorbed. In addition, the lower layer packing in the humidifying packing zone also selects MBBR packing with a large specific surface area, which can increase the gas-liquid contact area and improve the efficiency of subsequent biological treatment. The exhaust fan 1 conveys and extracts air, which passes through the humidifying packing zone from top to bottom through the air inlet 2 and then enters the water collection zone 10 and then enters the spray packing zone 8 from bottom to top. A liquid level sensor 11 is installed in the water collection zone 10. The water collection zone 10 feeds back the liquid level through the liquid level sensor 11. When the spray water pump 9 starts, it needs to receive the liquid level signal of the liquid level sensor 11 to supplement water or drain water. The liquid level sensor 11 detects the liquid level in the water collection zone 10. A demister is arranged inside the demisting zone 7.

[0021] Refer to Figure 1As described above, the spray water is sprayed from the upper part of the packing, and passes through multiple packing layers in the humidifying packing area from top to bottom in sequence, then enters the volcanic rock packing layer in the spray packing area, and finally passes through the demister at the top of the device and is discharged up to the standard through the chimney. The waste gas transported by the exhaust fan 1 first enters the humidifying packing area through the air inlet 2, which is also the air inlet area. In the humidifying packing area, the components of the waste gas that are easily soluble in water are dissolved in the water. After passing through the humidifying packing area, the remaining components come into contact with the microorganisms attached to the surface of the volcanic rock packing 13 in the spray packing area 8 and are decomposed and utilized by the microorganisms. At the same time, due to the action of the air flow, the packing will loosen, so the phenomenon of short circuit will not occur. The gas flowing from bottom to top makes full contact in the spray packing area. After the action of the microorganisms, the qualified gas is discharged from the top.

[0022] In the present utility model, during use, the waste gas is transported to the air inlet 2 through the exhaust fan 1 and enters the humidifying packing area, where the gas is preliminarily filtered and dissolved. Then it enters the MBBR packing area 3 and the polyurethane packing area 4. Both the MBBR packing area 3 and the polyurethane packing area 4 have an extremely high specific surface area and can attach a large number of microorganisms. At the same time, the spray density here is relatively large, and the waste gas such as hydrogen sulfide and ammonia that are easily soluble in water can be fully absorbed when the waste gas passes through here. In addition, the lower packing in the humidifying packing area also selects the MBBR packing area 3 with a relatively large specific surface area, which can increase the gas-liquid contact area and improve the efficiency of subsequent biological treatment. Then it enters the volcanic rock packing 13 in the spray packing area 8 through the water collection area 10. The volcanic rock packing 13 has an extremely high specific surface area and a relatively small specific gravity. As a biological carrier, it can increase the contact area and improve the efficiency of biological treatment. At the same time, due to the action of the air flow, the packing will loosen, so the phenomenon of short circuit will not occur, and the volcanic rock also has an adsorption capacity, which can improve the treatment efficiency of the biological filter.

[0023] As mentioned above, the above is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. An improved biological filter, comprising an exhaust fan (1), a spray zone (5), a demisting zone (7), a spray packing zone (8), a spray water pump (9), a water collection zone (10) and a biological filter housing (12), characterized in that, The exhaust fan (1) is connected to an air inlet (2), and the air inlet (2) is connected to a spraying area (5). The spraying area (5) is divided into a humidifying packing spraying area and a spraying packing spraying area according to the packing properties. A humidifying packing area is provided below the humidifying packing spraying area in the spraying area (5), and the humidifying packing area is mainly divided into a polyurethane packing area (4) in the upper layer and an MBBR packing area (3) in the lower layer. A spraying packing area (8) is provided below the spraying packing spraying area in the spraying area (5). The spraying water pump (9) is connected to a spraying component (6), and the spraying component (6) is distributed at the top of the spraying area (5). The spraying component (6) sprays the humidifying packing area and the spraying packing area (8) below the spraying area (5).

2. The improved biological filter according to claim 1, wherein The MBBR packing area (3) and the polyurethane packing area (4) are separated from each other, and the spraying packing area (8) is mainly filled with volcanic rock packing (13).

3. An improved biological filter according to claim 1, characterized in that, The exhaust fan (1) conveys the extracted air, which passes through the humidifying packing area from top to bottom through the air inlet (2) and then enters the water collection area (10), and then enters the spraying packing area (8) from bottom to top.

4. An improved biological filter according to claim 1, characterized in that, A liquid level sensor (11) is installed in the water collection area (10), and the liquid level sensor (11) detects the liquid level in the water collection area (10).

5. An improved biological filter according to claim 1, characterized in that, Both the MBBR packing area (3) and the polyurethane packing area (4) in the humidifying packing area below the spraying area (5) are placed in a stainless steel wire mesh, and a maintenance opening is provided at a position of the biological filter housing (12) close to the upper part of the humidifying packing area.

6. An improved biological filter according to claim 1, characterized in that, An eliminator is provided inside the demisting area (7).

7. An improved biological filter according to claim 1, characterized in that, The water collection area (10) feeds back the liquid level through the liquid level sensor (11), and when the spraying water pump (9) starts, it needs to receive the liquid level signal of the liquid level sensor (11) to supplement or drain water.

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