Improved biological filter deodorization device

Abstract

The utility model discloses an improved deodorization device for a biological filter, which is characterized in that a space layer is arranged at the longitudinal middle position of a filler layer of a biological section of the biological filter, a uniform gas distribution pore plate is paved at the contact part of the lower part of the space layer and the filler layer, and a filler fixing grating is arranged at the contact part of the upper part of the space layer and the filler layer. According to the biological filter disclosed by the utility model, the empty space is arranged in the middle layer of the biological section filler by surrounding microorganism deodorization and adopting an engineering improvement method, so that the contact area between waste gas to be treated and microorganisms in the filter can be greatly increased, the gas and liquid wall flow phenomena are reduced, and the redistribution of the waste gas and spraying liquid is promoted; the survival and reproduction capabilities of microorganisms inside and on the surface of the filter material are enhanced, and the loss of strains is reduced, so that the efficient treatment of the biological filter on stink components such as H2S and NH3 is maintained.

Description

Technical Field

[0001] The utility model belongs to the technical field of biofilter deodorization, and particularly relates to an improved biofilter deodorization device. Background Art

[0002] The deodorization device of the biological filter tank is mainly composed of a pre-washing section and a biological section. The filler of the biological section is usually composed of organic filler and inorganic filler in a ratio of 1:1, and is laid as a whole in the form of graded filler until the filler reaches the specified height, thereby providing organic and inorganic nutrients for the growth and reproduction of microorganisms. However, in the long-term operation process, the filler of the biological section is easy to harden, resulting in an increase in the gap between the fillers, an increase in the load of the small-scale filler to treat odors, and a gas wall flow phenomenon, which ultimately leads to insufficient contact between the microorganisms on the surface and inside of the filler and the gas to be treated, resulting in poor deodorization effect. When the gas to be treated entering the biological section passes through the filler from bottom to top, it is also easy to escape from the filter tank from the position where the filler resistance is small, and the overall contact area with the filler is small, so it cannot be evenly treated by the microorganisms in the filler. Similarly, since the spray pipeline and nozzle are installed at the top of the biological section of the filter tank, the spray water is sprayed vertically from top to bottom. During the long-term operation of the equipment, it is also easy for the filler to not be completely wetted during the spraying process due to liquid wall flow or cross flow, causing the growth of microorganisms to be concentrated in a certain area and unable to derive and reproduce along the surface of the filler, which greatly reduces the deodorization effect.

[0003] Generally, inorganic fillers are laid first in the biological section of the biofilter, and then organic fillers are laid directly on top of the inorganic fillers. This filling method is simple and fast, the gaps between the fillers are relatively uniform, and the overall landfill density is high. It can be applied to general projects. However, this method has its shortcomings. During the operation of the equipment, it is impossible to understand the growth of biological film below the top filler - the surface where microorganisms are in direct contact with the exhaust gas or the height of the remaining fillers, nor is it possible to understand the compaction of the filler and the flow state of the gas. At the same time, if you want to sample the fillers at different time periods and different filler layer heights during the operation of the equipment, you also need to dig from the top, which is time-consuming and labor-intensive and basically impossible to achieve. Alternatively, if you want to detect and verify the gas removal effect and residual concentration at each filler layer height, it is also impossible to start.

[0004] In addition, inorganic fillers and organic fillers are stacked in layers as a whole, which is not conducive to the simultaneous absorption of organic and inorganic nutrients by microorganisms, resulting in poor growth and uneven distribution of microorganisms. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an improved biofilter deodorization device, in which a space layer is provided in the longitudinal middle position of the packing layer of the biological section of the biofilter, a uniformly distributed air hole plate is laid on the lower part of the space layer in contact with the packing layer, and a packing fixing grid is provided on the upper part of the space layer in contact with the packing layer.

[0006] Optionally, a plurality of filler loading tanks are provided in the biological section of the biofilter, and a process sampling support frame is provided outside the filler loading tank 3 .

[0007] Optionally, the filler loading slot is arranged on a sliding guide rail.

[0008] Optionally, the sliding guide rail is arranged along the width direction of the filter tank.

[0009] Optionally, a sampling port is provided on the filter tank body outside the filler loading tank.

[0010] Optionally, a draw hook is provided on the outer side of the filler loading groove.

[0011] Optionally, the sampling port is provided with a push-pull plate arranged along the outer surface of the filter tank, and the push-pull plate is provided with a hook.

[0012] Optionally, the organic filler and the inorganic filler are buried alternately in the same layer, and the filler loading groove is arranged in the organic filler and the inorganic filler arranged alternately.

[0013] Optionally, a spray pipe is provided in the space layer, a spray nozzle is arranged on the spray pipe, and the spray pipe is connected to a circulating water tank through a circulating water pump.

[0014] Optionally, the filler fixing grid is made of a glass fiber reinforced plastic square hole grid plate, and the uniformly distributed air hole plate is made of polypropylene.

[0015] Optionally, the filler loading tank is made of a stainless steel wire mesh, the top of the wire mesh is open, and the bottom supports the filter material; the process sampling support frame is made of stainless steel.

[0016] The utility model sets up a certain space layer at the center of the packing layer of the biological section of the biological filter tank, lays a uniformly distributed air hole plate at the lower part of the space layer in contact with the packing layer; and adds a packing fixing grid at the upper part of the space layer in contact with the packing layer; in this way, when the waste gas to be treated flows through the middle position of the packing layer, the gas can be redistributed evenly and contact with the microorganisms in the packing layer from bottom to top again.

[0017] By changing the overall filling method of the biological section of the filter tank to a "modular" stretchable filling loading slot method, similar to the installation method of activated carbon in an activated carbon box, a single filling loading slot is spliced ​​into a large biological filter biological section box. Each layer of filling loading slots is provided with sampling ports along the four sides of the filter section box, which can sample and measure fillings and gas samples of different heights. Each layer of filling loading slots is connected to each other along the width of the filter tank and installed on a slidable guide rail. The filling loading slots and sampling ports are provided with hooks on the outer surface of the filter tank, which can be conveniently pushed, pulled and opened in both directions. This installation method can realize the maintenance and replacement of the filling loading slots, and the sampling of fillings for the filter process. It is conducive to the intensive production of filling loading modules and is more conducive to the installation and use of the biological filter tank box.

[0018] In addition, organic fillers and inorganic fillers are separately landfilled between each layer of filler loading slots, so that microorganisms can use organic and inorganic nutrients at the same time and grow and reproduce better in the filler.

[0019] By setting up a spray pipeline and arranging spray nozzles in the space layer at the center of the biological section filler layer, and connecting the spray pipeline to the circulating water tank, a two-way spray is formed on the top and middle layers of the filter tank, increasing the spray area of ​​the filler that is not wetted due to wall flow and cross flow, and enhancing the biofilm performance of microorganisms. Beneficial Effects

[0020] 1. The biofilter of the utility model is centered on microbial deodorization. An overhead layer is set in the middle layer of the biological section filler by an engineering improvement method. This can greatly increase the contact area between the waste gas to be treated and the microorganisms in the filter, reduce the occurrence of gas and liquid wall flow, promote the redistribution of waste gas and spray liquid, enhance the survival and reproduction ability of microorganisms inside and on the surface of the filter material, reduce the loss of bacteria, and thus maintain the biofilter for H 2 S. NH 3 Efficient treatment of odorous components such as chlorinated polysaccharides.

[0021] 2. Compared with the existing biofilter bio-stage simple graded filter material landfill, it is transformed into a unitized framework for filler loading, which is conducive to the dispersion of microorganisms inside and on the surface of the filler to expand the cultivation area and maintain the aerobic respiration and good growth state of the microorganisms. During the operation of the equipment, the unitized carrier filler slot can be stretched in different directions. The bio-stage fillers and gas samples at different heights can be loaded through the "drawer-type" external sampling port of the filler slot, and representative samples can be selected for analysis. The filler biofilm condition and the gas treatment effect at different filler layer heights can be tracked and monitored at any time, providing excellent bacterial germplasm resources and data references for subsequent enrichment and screening of deodorizing microorganisms that are beneficial to the filler. In addition, each layer of filler loading slots is filled with organic fillers and inorganic fillers in intervals, so that microorganisms can simultaneously absorb organic and inorganic nutrients, grow and reproduce in the filler faster and better, and maintain the number of effective live bacteria in the biological treatment section. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is the front view of the improved biofilter deodorizing device of the utility model;

[0023] Figure 2 It is a side view of the outer frame of the improved biofilter deodorization device of the utility model;

[0024] Figure 3 This is an enlarged view of the packing loading slot area.

[0025] In the figure: 1-uniformly distributed air hole plate, 2-filler fixing grid surface, 3-filler loading slot, 4-sliding guide rail, 5-spray nozzle, 6-sampling support frame, 7-spray pipe, 8-air inlet, 9-air outlet, 10-organic filler, 11-inorganic filler, 12-circulating water pump, 13-circulating water tank. DETAILED DESCRIPTION

[0026] like Figure 1-3 As shown, the utility model discloses an improved biofilter deodorization device, in which a space layer is provided in the longitudinal middle position of the packing layer of the biological section of the biofilter, a uniformly distributed air hole plate 1 is laid on the lower part of the space layer in contact with the packing layer, and a packing fixing grid 2 is provided on the upper part of the space layer in contact with the packing layer.

[0027] A plurality of filler loading tanks 3 are provided in the biological section of the biofilter, and a process sampling support frame 6 is provided outside the filler loading tanks 3 .

[0028] The filler loading slot 3 is arranged on the sliding guide rail 4 .

[0029] The sliding guide rail 4 is arranged along the width direction of the filter tank.

[0030] A sampling port is provided on the filter tank body outside the filler loading tank 3 .

[0031] A draw hook is provided on the outer side of the filler loading slot 3 .

[0032] The sampling port is provided with a push-pull plate arranged along the outer surface of the filter tank, and the push-pull plate is provided with a draw hook.

[0033] The organic fillers 10 and the inorganic fillers 11 of each layer are buried alternately, and the filler loading grooves 3 are arranged in the organic fillers 10 and the inorganic fillers 11 arranged alternately.

[0034] A spray pipe 7 is provided in the space layer, a spray nozzle 5 is arranged on the spray pipe 7 , and the spray pipe 7 is connected to a circulating water tank 13 through a circulating water pump 12 .

[0035] The filler fixed grid 2 is made of a glass fiber reinforced plastic square hole grid plate, and the material of the uniformly distributed air hole plate 1 is polypropylene.

[0036] The filler loading tank 3 is made of a stainless steel wire mesh, the top of the wire mesh is open, and the bottom supports the filter material.

[0037] The process sampling support frame 6 is made of stainless steel.

[0038] The existing biofilter bio-stage filler is laid in an integral layered landfill manner. However, this ignores the observation of the growth and reproduction status of microorganisms during the operation of the equipment, and it is basically impossible to monitor and sample the process filler and gas concentrations at different heights.

[0039] The inventors added an overhead layer at the center of the biological section packing layer. The upper part of the space layer in contact with the packing is fixedly supported by a fiberglass grating plate, while the lower part of the space layer in contact with the packing is made of a uniformly distributed air hole plate made of polypropylene. On the one hand, the packing at the bottom of the space layer is compacted to prevent the packing from loosening due to compaction, which leads to an increase in the gap between the packings and the formation of wall flow. On the other hand, the gas flowing through is evenly redistributed to enhance the treatment effect of the upper packing of the filter tank on the exhaust gas. Similarly, the spray pipeline on the top of the filter tank sprays vertically from top to bottom. Due to the loose compaction of the lower packing, it is difficult to completely wet the packing. It is difficult for microorganisms to evenly penetrate directly from the top to the bottom of the filter material layer. By setting up a spray pipeline in the overhead layer, the redistribution of the bacterial liquid in the circulating water tank 13 is achieved, and the microorganisms can grow biofilm quickly and over a large area.

[0040] The structure of the pre-wash section of the biofilter of the present invention is not changed. By changing the overall layered filling method of the biosection of the filter into a "modular" stretchable filling loading slot method, similar to the installation method of activated carbon in an activated carbon box, a single filling loading slot is spliced ​​into a large box of the biosection of the biofilter. The unitized structure of the filling loading is conducive to the full contact between microorganisms and waste gas or oxygen, providing an aerobic space for their growth, and preventing the formation of an internal anaerobic state due to the compaction of the filter material. The filling loading slot is made of a stainless steel wire mesh, the top of the wire mesh is open, and the bottom supports the filter material. Each layer of the filling loading slot is provided with a sampling port along the four sides of the filter section box, that is, a square opening is provided at the lower right corner of each layer and each "drawer" filling on the outer surface of the filter, and the inside of the square opening is a separate cubic space that is nested in the stainless steel filling slot and extends to the center of the filling slot. A process sampling support frame 6 is welded at the upper and side parts of the cubic space and the connection part with the stainless steel filling slot to prevent the remaining filling in the slot from being scattered due to stretching during sampling, thereby hindering the recovery of the sampling port space. This space is designed to facilitate the sampling and measurement of representative samples of fillers and gases of different heights during the operation of the filter tank, and then load them into the stainless steel filler tank after completion. Each layer of filler loading tank is connected to each other along the width of the filter tank and installed on a sliding guide rail made of fiberglass. Each layer of the guide rail is welded and fixed on both sides of the filter tank body. The "drawer-type" filler loading tank and sampling port are provided with hooks on the outer surface of the filter tank, which can be pushed, pulled and opened in both directions. Sealing strips are installed on the outside and inside of the joint between the "drawer-type" filler loading tank and the filter tank body to prevent the spray water from overflowing from the joint during the spray operation of the filter tank body. This installation method can realize the maintenance and replacement of the filler loading tank and the sampling of fillers in the filter tank process, which is conducive to the intensive production of filler loading modules and the installation and use of the biofilter tank body.

[0041] In addition, each layer of filler loading slots is filled with organic fillers 10 and inorganic fillers 11 at intervals. The organic fillers can be bamboo charcoal or bark, while the inorganic fillers can be volcanic rocks or expanded clay. This allows microorganisms to utilize organic and inorganic nutrients at the same time. They can attach and grow over a large area inside different fillers, and the number of effective microorganisms remains stable.

[0042] The above specific implementations do not constitute a limitation on the protection scope of the present utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may occur depending on design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An improved biofilter deodorization device, characterized in that: A space layer is provided in the longitudinal middle of the packing layer of the biological section of the biological filter tank, a uniformly distributed air hole plate (1) is laid on the lower part of the space layer in contact with the packing layer, and a packing fixing grid (2) is provided on the upper part of the space layer in contact with the packing layer; a plurality of packing loading slots (3) are provided in the biological section of the biological filter tank, and a process sampling support frame (6) is provided outside the packing loading slots (3); the packing loading slots (3) are arranged on a sliding guide rail (4); and a sampling port is provided on the surface of the filter tank body outside the packing loading slots (3).

2. The improved biofilter deodorizing device according to claim 1, characterized in that: The sliding guide rail (4) is arranged along the width direction of the filter tank.

3. The improved biofilter deodorizing device according to claim 1, characterized in that: A draw hook is provided on the outside of the filler loading groove (3).

4. The improved biofilter deodorizing device according to claim 1, characterized in that: The organic filler (10) and the inorganic filler (11) are buried at intervals in the same layer, and the filler loading groove (3) is arranged in the organic filler (10) and the inorganic filler (11) arranged at intervals.

5. The improved biofilter deodorizing device according to claim 1, characterized in that: A spray pipe (7) is provided in the space layer, a spray nozzle (5) is arranged on the spray pipe (7), and the spray pipe (7) is connected to a circulating water tank (13) via a circulating water pump (12).

6. The improved biofilter deodorizing device according to claim 1, characterized in that: The filler fixed grid (2) is made of a glass fiber reinforced plastic square hole grid plate, and the material of the uniformly distributed air hole plate (1) is polypropylene.

7. The improved biofilter deodorizing device according to claim 1, characterized in that: The filler loading slot (3) is made of a stainless steel wire mesh, and the process sampling support frame (6) is made of stainless steel.

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