Novel biological filter deodorization device

Abstract

The utility model discloses a novel biological filter deodorization device which comprises a biological filter body, a partition plate I, a partition plate II, an elbow pipe, a coarse grating plate, a polypropylene ball layer, an air duct, a filler unit and a variable temperature unit, and the partition plate I and the partition plate II are fixedly connected to the inner walls of the upper end and the lower end of the biological filter body respectively; an elbow pipe is arranged in the biological filter body, a coarse grating plate is welded and fixed to a pipe opening in the front end of the elbow pipe, the upper portion of the coarse grating plate is filled with a polypropylene ball layer which is bundled into a bag, and the elbow pipe is fixedly connected with the upper end of the second partition plate and the inner wall of the upper end of the biological filter body; an air duct is arranged in the biological filter body through a partition plate I and a partition plate II, a filler unit is arranged in one side of the biological filter body, and a variable temperature unit is arranged at one end of the outer part of the biological filter body, so that the high-efficiency treatment effect of stink components such as H2S and NH3 in the biological filter body is maintained.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas deodorization, in particular to a novel biological filter deodorization device. Background Art

[0002] The deodorization device of the biofilter is mainly composed of a pre-wash section and a biological section. Focusing on different fillers and deodorizing microbial strains, the technical means to improve the deodorization efficiency of the biofilter are studied. The pre-wash section of the filter continuously sprays and humidifies the incoming air to provide suitable water living conditions for the microbial strains in the biofilter body. At the same time, the spray water in the pre-wash section can also be replaced by drip filtration treatment with functional microbial liquid to relieve the pressure of the biological section to treat high-concentration waste gas. In the early stage of the operation of the biofilter body, the functional microbial liquid is generally used to pre-grow the strain fillers. During this period, since the organic and inorganic combined fillers of the biological section are rich in the nutrients required by the functional microorganisms, at a suitable temperature (15-35°C), the growth and reproduction of functional bacteria can decompose the odor components into H2O and CO2, and convert them into energy substances required for their own growth.

[0003] However, the biofilter also has the problem of unstable operating efficiency. For example, in the air outlet pipe of the pre-wash section of the biofilter where some fans are running under negative pressure, the spray port of the pre-wash section is too close to the air outlet pipe. When the fan and the spray pipeline are running at the same time, the suction of the high-frequency fan will cause the bacterial liquid in the pre-wash section to enter the air supply pipe, resulting in a large loss of beneficial microorganisms. On the other hand, in the cold winter, the ambient temperature is low, and the growth and activity of microorganisms will be greatly inhibited. If the filter circulating water is heated by a resistance wire heater attached to the filter circulating water tank, it is easy to cause the heating rod of the resistance wire heater to be blocked by water impurities, requiring regular cleaning, increasing the cost of regular maintenance. At the same time, with the operation of the biofilter device, the acidic water will gradually corrode the heating rod, posing certain safety issues. In addition, the biofilter body usually uses bacterial microorganisms to carry out biofilm deodorization, and when the deodorization load or the living environment of the bacteria suddenly changes, the deodorization efficiency often tends to decline. Utility Model Content

[0004] The purpose of the utility model is to provide a novel biofilter deodorizing device to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a novel biofilter deodorizing device, comprising a biofilter body, partition one, partition two, an elbow pipe, a coarse grid plate, a polypropylene ball layer, an air duct, a filler unit and a temperature-changing unit, wherein the inner walls of the upper and lower ends of the biofilter body are respectively fixedly connected with partition one and partition two, an elbow pipe is arranged in the biofilter body, a coarse grid plate is welded and fixed to the front end of the elbow pipe, a polypropylene ball layer bundled into bags is placed on the upper part of the coarse grid plate, the elbow pipe is fixedly connected to the upper end of partition two and the inner wall of the upper end of the biofilter body, an air duct is arranged inside the biofilter body through partition one and partition two, a filler unit is arranged inside one side of the biofilter body, and a temperature-changing unit is arranged at one end outside the biofilter body.

[0006] The packing unit includes laying layer one, laying layer two, packing layer one and packing layer two. The number of packing layer one and packing layer two is three, and the packing layer two is laid on the upper end of packing layer one. The lower end of the lowest packing layer one is laid with laying layer one, and the upper end of the highest packing layer two is laid with laying layer two.

[0007] The material of the packing layer 1 is volcanic rock or ceramsite filler, the material of the packing layer 2 is bamboo charcoal or sawdust or bentonite filler, and the ratio of the packing layer 1 to the packing layer 2 is 1:1.

[0008] An air inlet pipe is arranged on one side of the biofilter body, a waterproof brim is arranged on one end of the air inlet pipe, an air outlet pipe is fixedly connected to one side of the upper end of the biofilter body, and a spray pipe 1 and a plurality of spray pipes 2 distributed at equal distances are arranged on the upper end wall of the biofilter body.

[0009] The temperature-changing unit comprises a water tank, a resistance wire heater, a water pipe 1, a water pipe 2, a thermal insulation cotton layer and a hose. A water tank is provided at one end of the biological filter body, and the water tank is connected to the biological filter body through water pipe 1 and water pipe 2 respectively. A hose is fixedly provided inside the carbon steel frame of the biological filter body. The ends of water pipe 1 and water pipe 2 away from the water tank are connected to the hose, and the inner side of the corrugated board on the exterior of the biological filter body is covered with a thermal insulation cotton layer.

[0010] A water pump is arranged on the outer wall of the water pipe 1, a resistance wire heater is arranged on the water tank, the material of the hose is silica gel, and a temperature probe is arranged in the water tank.

[0011] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0012] 1. The biofilter of the utility model focuses on microbial deodorization and uses an engineering improvement method to improve the survival and reproduction ability of microorganisms in the biofilter body under different habitat conditions, greatly reducing the loss of bacteria, thereby maintaining the efficient treatment of odor components such as H2S and NH3 in the biofilter body.

[0013] 2. In cold or hot seasons, the biological filter body can be heated or cooled regularly by passing a fixed silicone water pipe through the hollow part of the carbon steel skeleton of the biological filter body. This can avoid the risk of corrosion caused by using a resistance wire heater directly in the spray circulation water tank, and there is no need to regularly clean the fouling on the surface of the resistance wire heater. It can safely and efficiently create temperature conditions suitable for the survival of microorganisms.

[0014] 3. The packing combination of the biological section of the biofilter has sufficient organic and inorganic nutrients, which can quickly cultivate mixed microbial flocs, enhance the adaptability of environmental microorganisms to changes in waste gas treatment load, changes in waste gas components, and changes in the pH value of the circulating liquid, and ultimately cultivate, screen and separate more superior deodorizing microorganisms. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is a schematic diagram of the main structure of the deodorizing tower of the biological filter body of the utility model;

[0017] Figure 2 It is a schematic diagram of the left view of the outer frame of the deodorizing tower of the biological filter body of the utility model;

[0018] In the figure: 1. Biofilter body; 2. Partition 1; 3. Partition 2; 4. Elbow pipe; 5. Coarse grid plate; 6. Polypropylene ball layer; 7. Air duct; 8. Laying layer 1; 9. Laying layer 2; 10. Packing layer 1; 11. Packing layer 2; 12. Air inlet pipe; 13. Waterproof brim; 14. Air outlet pipe; 15. Spray pipe 1; 16. Spray pipe 2; 17. Water tank; 18. Resistance wire heater; 19. Water pipe 1; 20. Water pipe 2; 21. Insulation cotton layer; 22. Hose; 23. Temperature probe. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-Figure 2 The utility model provides a technical solution: a novel biofilter deodorizing device, comprising a biofilter body 1, a partition 1 2, a partition 2 3, an elbow pipe 4, a coarse grid plate 5, a polypropylene ball layer 6, an air duct 7, a filler unit and a temperature-changing unit. The inner walls of the upper and lower ends of the biofilter body 1 are respectively fixedly connected with a partition 1 2 and a partition 2 3. The biofilter body 1 is provided with an elbow pipe 4, and a coarse grid plate 5 is welded and fixed to the front end of the elbow pipe 4. The upper part of the coarse grid plate 5 is filled with lightweight fillers such as a polypropylene ball layer 6 bundled into bags, which is used to prevent the pre-washing section spray water from entering the suction pipe and causing the loss of functional microbial bacterial liquid. The elbow pipe 4 is fixedly connected to the upper end of the partition 2 3 and the inner wall of the upper end of the biofilter body 1. The biofilter body 1 is provided with an air duct 7 through the partition 1 2 and the partition 2 3. A filler unit is provided inside one side of the biofilter body 1, and a temperature-changing unit is provided at one end of the outer side of the biofilter body 1.

[0021] 2. In a preferred embodiment: the packing unit includes a laying layer 1 8, a laying layer 2 9, a packing layer 10 and a packing layer 2 11, the number of the packing layer 10 and the packing layer 2 11 is 3, and the packing layer 2 11 is laid on the upper end of the packing layer 10, the lower end of the lowermost packing layer 10 is laid with the laying layer 1 8, and the upper end of the uppermost packing layer 2 11 is laid with the laying layer 2 9.

[0022] 3. In a preferred embodiment: the material of the packing layer 10 is volcanic rock or expanded clay filler, the material of the packing layer 2 11 is bamboo charcoal or sawdust or bentonite filler, and the ratio of the packing layer 10 to the packing layer 2 11 is 1:1.

[0023] 4. In a preferred embodiment: an air inlet pipe 12 is provided on one side of the biofilter body 1, a waterproof brim 13 is provided on one end of the air inlet pipe 12, an air outlet pipe 14 is fixedly connected to one side of the upper end of the biofilter body 1, and a spray pipe 15 and a plurality of spray pipes 16 equidistantly distributed are provided on the upper end wall of the biofilter body 1.

[0024] During the biofilm formation process of the biofilter body 1, a certain amount of original bacterial solution is first added to the biofilter body 1 by mixed cultivation of fungi and bacteria or direct addition of activated sludge. On the basis of the original bacterial solution, carbon source nutrition is regularly added to rejuvenate functional bacteria such as fungi, bacteria, and activated sludge, expand their growth area in the filler, and quickly improve the activity of microorganisms in desulfurization and removal of odors such as ammonia. The filler unit is a combination of organic fillers and inorganic fillers, such as composite fillers of bamboo charcoal, sawdust, bentonite and expanded clay, volcanic rock, etc., so that the microorganisms provide rich organic and inorganic nutrients for the colonization of the bacteria in the later stage of biofilm formation, so that the reclaimed water or circulating water in the plant area can meet the growth needs of microorganisms.

[0025] 5. In a preferred embodiment: the temperature variable unit includes a water tank 17, a resistance wire heater 18, a water pipe 19, a water pipe 20, a thermal insulation cotton layer 21 and a hose 22. A water tank 17 is provided at one end of the biological filter body 1. The water tank 17 is connected to the biological filter body 1 through water pipe 19 and water pipe 20 respectively. A hose 22 is fixedly provided inside the carbon steel frame of the biological filter body 1. The ends of the water pipe 19 and the water pipe 20 away from the water tank 17 are connected to the hose 22. The inner side of the corrugated board of the exterior of the biological filter body 1 is covered with a thermal insulation cotton layer 21.

[0026] 6. In a preferred embodiment: a water pump is provided on the outer wall of the water pipe 19 , a resistance wire heater 18 is provided on the water tank 17 , the hose 22 is made of silica gel, and a temperature probe 23 is provided in the water tank 17 .

[0027] A silicone hose 22 is fixedly installed on the inner side of the heat preservation cotton layer 21 in the glass fiber reinforced plastic exterior corrugated board of the biofilter body 1 and along the carbon steel frame of the biofilter body 1. The silicone hose 22 is wrapped around the two sections of the biofilter body 1 according to the height from the bottom of the biofilter body 1 to the top of the filler. The silicone hose 22 is also extended into the external circulating heating water tank 17 of the biofilter body 1. The temperature can be raised or lowered in a regular cycle, which can avoid the risk of corrosion caused by directly using the resistance wire heater 18 in the spray circulating water tank 17. There is no need to regularly clean the fouling substances on the surface of the resistance wire heater 18, and the temperature conditions suitable for the survival of microorganisms can be created safely and efficiently.

[0028] The working principle of the utility model is as follows: 1. Since the air inlet direction of a general biological filter is "in from the bottom and out from the top", when the negative pressure fan and the upper spray of the filler are turned on at the same time, the circulating spray bacterial liquid is easy to leak out from the pre-wash section outlet pipe provided on one side of the biological filter body 1. By adding a downward elbow pipe 4 in front of the pre-wash section outlet pipe at the lower end of the spray pipe 15 of the biological filter body 1, a coarse grid plate 5 is welded and fixed at the pipe mouth end of the elbow pipe 4 near the filler, and light fillers such as polypropylene balls PP balls bundled into bags are placed on the upper part of the coarse grid plate 5. Under the premise of not changing the main flow direction of the gas, the spray circulating bacterial liquid is not easy to enter the outlet pipe, and will be blocked by the polypropylene balls and still flow into the filter tank, thereby avoiding the loss of the microbial bacterial liquid during operation.

[0029] 2. In the process of pre-filming through the biological section of the filter, the mixed cultivation of fungi and bacteria or the direct addition of activated sludge from the secondary sedimentation tank of a general sewage plant can improve the survival rate of the mixed bacteria in harsh environments such as strong acids or alkalis and the ability to deodorize stably. For example, fungi secrete mycelium to counteract the influence of the external environment on their own growth. First, a certain amount of original bacterial liquid and activated sludge are added to the biological filter body 1 and fed from the filling port at the top of the filter. On the basis of the original bacterial liquid, nutrients such as carbon sources, nitrogen sources and phosphorus sources are regularly added. Nutrient salts are added every 1-2 days. The nutrient salts are prepared in advance to make the composite functional microorganisms such as fungi, bacteria and activated sludge It can be rejuvenated in a short time, and its growth area in the filler can be gradually expanded, so as to improve the degradation activity of microorganisms in desulfurization and ammonia removal and the decomposition enzyme catalyzed chemical reaction process. The filler unit can be a combination of organic filler and inorganic filler, such as bamboo charcoal, sawdust, bentonite and expanded clay, volcanic rock and other composite fillers. According to the graded filler method: a layer of inorganic filler is laid, and then a layer of organic filler is laid on the upper layer, and the process is repeated. The total ratio of the two fillers is 1:1. The combined filler provides rich organic and inorganic nutrients for the colonization of the composite microbial floc in the later stage of biofilm formation, so that the reclaimed water or circulating water in the plant area in the later stage can meet the growth needs of microorganisms.

[0030] 3. The material of the thermal insulation layer inside the thermal insulation cotton layer 21 in the glass fiber reinforced plastic exterior corrugated board of the biofilter body 1 is a rock wool board, a B1 grade flame retardant material, and a silicone hose 22 is passed and fixed along the hollow part inside the carbon steel frame of the biofilter body 1. According to the height from the bottom of the biofilter body 1 to the top of the filler, the heating area of ​​the space on the top of the filler is saved, and energy is saved. Finally, the silicone hose 22 is surrounded by the two sections of the biofilter body 1. The silicone hose 22 is divided into two routes: water outlet and return water. The pipeline direction is "bottom in and top out". The two routes are extended into the external circulating heating water tank 17 of the biofilter body 1. The circulating water tank 17 is equipped with a resistance wire heater 18, a heat circulation water pump and a temperature probe 23. In winter, the resistance wire heater 18 in the circulating water tank 17 is started, and hot water is pumped into the hose 22 through the heat circulation water pump. Along the central part of the carbon steel frame and under the action of the thermal insulation cotton layer 21, the box body is continuously heated. In summer, the resistance wire heater 18 is normally closed. Due to solar radiation, heat release from microbial oxidation decomposition reactions, etc., the temperature inside the box insulation cotton layer 21 continues to rise. In order to ensure that the microorganisms grow at a suitable temperature, similarly, the cold water in the circulating water tank 17 can be pumped into the hose 22 to achieve the purpose of rapid cooling and heat exchange of the box.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A novel biofilter deodorization device, characterized in that: The invention comprises a biofilter body (1), a partition plate 1 (2), a partition plate 2 (3), an elbow pipe (4), a coarse grid plate (5), a polypropylene ball layer (6), an air duct (7), a filler unit and a temperature-changing unit. The inner walls of the upper and lower ends of the biofilter body (1) are respectively fixedly connected to the partition plate 1 (2) and the partition plate 2 (3). The biofilter body (1) is provided with an elbow pipe (4). The front end of the elbow pipe (4) is welded and fixed with a coarse grid plate (5). The upper part of the coarse grid plate (5) is filled with a polypropylene ball layer (6) packed in a bag. The elbow pipe (4) is fixedly connected to the upper end of the partition plate 2 (3) and the inner wall of the upper end of the biofilter body (1). The biofilter body (1) is provided with an air duct (7) through the partition plate 1 (2) and the partition plate 2 (3). The filler unit is provided inside one side of the biofilter body (1). The temperature-changing unit is provided at one end of the outer side of the biofilter body (1).

2. A novel biofilter deodorizing device according to claim 1, characterized in that: The packing unit comprises a laying layer 1 (8), a laying layer 2 (9), a packing layer 1 (10) and a packing layer 2 (11), wherein the number of the packing layer 1 (10) and the packing layer 2 (11) is three, and the packing layer 2 (11) is laid on the upper end of the packing layer 1 (10), the lower end of the lowermost packing layer 1 (10) is laid with the laying layer 1 (8), and the upper end of the uppermost packing layer 2 (11) is laid with the laying layer 2 (9).

3. A novel biofilter deodorizing device according to claim 2, characterized in that: The material of the packing layer one (10) is volcanic rock or ceramsite filler, and the material of the packing layer two (11) is bamboo charcoal or sawdust or bentonite filler. The ratio of the packing layer one (10) to the packing layer two (11) is 1:

1.

4. A novel biofilter deodorizing device according to claim 1, characterized in that: An air inlet pipe (12) is provided on one side of the biofilter body (1), a waterproof brim (13) is provided on one end of the air inlet pipe (12), an air outlet pipe (14) is fixedly connected to one side of the upper end of the biofilter body (1), and a spray pipe 1 (15) and a plurality of spray pipes 2 (16) distributed at equal distances are provided on the upper end wall of the biofilter body (1).

5. A novel biofilter deodorizing device according to claim 1, characterized in that: The temperature-changing unit comprises a water tank (17), a resistance wire heater (18), a water pipe 1 (19), a water pipe 2 (20), a heat-insulating cotton layer (21) and a hose (22); a water tank (17) is provided at one end of the biofilter body (1); the water tank (17) is connected to the biofilter body (1) via the water pipe 1 (19) and the water pipe 2 (20), respectively; a hose (22) is fixedly provided inside the carbon steel frame of the biofilter body (1); ends of the water pipe 1 (19) and the water pipe 2 (20) away from the water tank (17) are in communication with the hose (22); and the inner side of the corrugated board of the biofilter body (1) is covered with a heat-insulating cotton layer (21).

6. A novel biofilter deodorizing device according to claim 5, characterized in that: A water pump is provided on the outer wall of the water pipe 1 (19), a resistance wire heater (18) is provided on the water tank (17), the hose (22) is made of silica gel, and a temperature probe (23) is provided in the water tank (17).

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