Combined organic biological deodorization filler

Abstract

The present invention provides a combined organic biological deodorization filler, which comprises: a gas distribution layer, which comprises a gas distribution filler and a plurality of gas distribution pipes arranged at predetermined intervals, and each gas distribution pipe is located in the gas distribution filler and completely covered by the gas distribution filler; the organic filler layer is located above the gas distribution layer, the organic filler layer comprises coconut shred plate layers and peat layers, and the multiple coconut shred plate layers and the multiple peat layers are alternately stacked and evenly stacked to the designed height.

Description

Technical Field

[0001] The present invention relates to the technical field of biological deodorization, and provides a combined organic biological deodorizing filler, specifically a novel combined organic biological deodorizing filler. Background Art

[0002] During the treatment of municipal sewage sludge, most pollutants become gaseous and enter the atmosphere. The main components of these gases are nitrogen and carbon dioxide, and they also contain some hydrogen sulfide, ammonia, sulfide, skatole, volatile organic matter and other odor-causing gases. The odor will cause safety and personnel discomfort as well as NIMBY effect. The organic biological filler of the utility model is a new type of biological filler. The heterotrophic bacteria growing on the organic biological filler decompose the hydrogen sulfide, ammonia, sulfide, skatole and volatile organic matter in the odor to achieve the purpose of removing the odor. The deodorization principle is:

[0003]

[0004] Organic fillers are carbon sources for heterotrophic microorganisms, so fillers are consumables. Fixed filter media are set in the deodorization biofilter, and the odor is from bottom to top. The odor is constantly in contact with the filter media, and microorganisms multiply on the surface of the filter media, gradually forming a biofilm. The biofilm is an ecosystem composed of a variety of microorganisms. The filler needs to maintain a certain temperature, humidity, and acidity and alkalinity to provide a living environment and nutrition for heterotrophic microorganisms. VOC organic matter in the odor is also used as a carbon source nutrient for heterotrophic microorganisms, and is decomposed into inorganic salts and biological metabolites through biochemical reactions. Therefore, fillers are crucial for biological deodorization.

[0005] Heterotrophic biological flora mainly use organic pollutants and organic biological fillers as food, decomposing VOCs, sulfides and other substances to produce CO2 / CO3 -2 , nitrogen, water and salts. Heterotrophic biofilters can not only remove inorganic pollutants H2S and NH3, but also organic pollutants VOC. They are mainly used for treating odors with high VOC concentrations generated by sludge thermal drying, sludge composting, and sludge thermal hydrolysis. Under certain conditions, heterotrophic dominant bacteria naturally grow and can decompose sulfides, VOCs and other odor-causing substances.

[0006] Organic pollutants and organic biofillers serve as carbon sources for heterotrophic bacteria. Under the action of heterotrophic bacteria, biochemical reactions occur, and substances such as VOCs and sulfides are decomposed to produce CO2 / CO3 -2 , nitrogen, water and salts. To accelerate the growth of biological flora, N, P & K nutrient solution can also be added.

[0007] In the municipal sludge treatment process, the waste gas generated by the sludge drying process, sludge composting, and sludge thermal hydrolysis process contains a large amount of VOC components, and VOC contributes greatly to the odor intensity. Therefore, it is necessary to select heterotrophic biological deodorization technology that is effective in removing VOC. Heterotrophic biological deodorization technology has been verified by a large number of engineering practices and has a good removal effect on hydrogen sulfide, ammonia, methyl mercaptan and VOC.

[0008] A good filler carrier must meet the following requirements: allow a rich variety of microorganisms to grow; provide a large specific surface area for microorganisms to live and grow; have reasonable nutrients (N, P, K and trace elements); have good water absorption; have no odor; have good adsorption properties; have a uniform structure and high porosity; have readily available and inexpensive materials; be resistant to aging; have low operating resistance; and be simple to operate and maintain. Common organic fillers include soil, peat, compost, bark, etc.

[0009] Most of the existing biological deodorizing fillers are made of soil, peat, compost, bark and other materials, mixed and filled, and stacked in disorder. As a result, the filler pile is uneven, has high resistance, and has a very low organic content, which cannot provide good living conditions and sufficient organic carbon sources for heterotrophic bacteria. In addition, after a period of use, the filler has a higher resistance, the deodorizing effect is weakened, and even fails. Utility Model Content

[0010] In order to solve the problems existing in the above-mentioned prior art, the utility model provides a new type of combined organic biological deodorizing filler, the purpose of which is to provide a suitable living and breeding environment for heterotrophic microorganisms, and to meet the requirements of industrial application in terms of temperature, humidity, fluffiness, air permeability, flow uniformity, gas pressure loss, odor removal efficiency and lifespan.

[0011] The utility model provides a combined organic biological deodorizing filler, which is characterized by comprising an air distribution layer and an organic filler layer located above the air distribution layer.

[0012] Preferably, the air distribution layer includes: an air distribution filler, which adopts 20-30 mm gravel or shale as a hydrophobic material; and an air distribution pipe, which adopts fiberglass or PE pipes and is arranged in multiple numbers at predetermined intervals and is located in the air distribution filler and is completely covered by the air distribution filler.

[0013] Preferably, the air distribution pipe is provided with a plurality of air distribution holes, and the diameters of two adjacent air distribution holes are different; on a cross section perpendicular to the axis of the air distribution pipe where the air distribution holes on the air distribution pipe are located, a line connecting the center of the air distribution hole and the center of the cross section and a line connecting the center of an adjacent air distribution hole and the center of the cross section form an angle of 90°.

[0014] Preferably, the organic filler layer comprises: a pressed coconut fiber board layer containing pure natural coconut fiber; and a peat layer containing organic matter; a plurality of the coconut fiber board layers and a plurality of the peat layers are alternately stacked and evenly piled to a designed height.

[0015] Preferably, the thickness of the pressed coconut fiber board layer is 50-100 mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings required for use in the description of the embodiments or the prior art are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a cross-sectional view of a combined organic biological deodorizing filler;

[0019] Figure 2 This is a schematic diagram of the openings of the air distribution holes provided on the air distribution pipe.

[0020] In the figure: 1-air distribution pipe, 2-air distribution filler, 3-coconut fiber board layer, 4-peat layer, H1-air distribution layer, H2-organic filler layer. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purposes, features and advantages of the present disclosure, the embodiments of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0023] See also Figure 1-Figure 2 , reference numeral 1 is an air distribution pipe. Reference numeral 2 is an air distribution filler. Reference numeral 3 is a coconut fiber board layer. Reference numeral 4 is a peat layer. Reference numeral H1 is an air distribution layer. Reference numeral H2 is an organic filler layer.

[0024] The combined organic biological deodorizing filler of the utility model comprises: an air distribution layer H1; and an organic filler layer H2, which is located above the air distribution layer H1. Here, the air distribution layer is stacked above the organic filler layer.

[0025] The air distribution layer H1 includes: an air distribution filler 2, which is made of 20-30 mm gravel or shale as a hydrophobic material; and an air distribution pipe 1, which is made of glass fiber reinforced plastic or PE pipe and is provided with a plurality of ( Figure 1 5 in the figure), and are located in the air distribution filler 2 and are completely covered by the air distribution filler 2. In this way, the combination of the air distribution pipe 1 and the air distribution filler 2 realizes uniform distribution of the treated odor. It should be noted that the above number is not particularly limited and can also be appropriately set to other values ​​according to the actual needs.

[0026] In addition, the number of the air distribution pipes 1 can be designed according to the total gas volume. Furthermore, the material of the air distribution filler 2 is not limited to the above-mentioned gravel or shale, as long as it is a strong hydrophobic material.

[0027] like Figure 2 As shown, the air distribution pipe 1 is provided with a plurality of air distribution holes ( Figure 2 There are 2 in the figure), the diameters of two adjacent air distribution holes are different (for example, the diameter of one air distribution hole is φ12, and the diameter of the other air distribution hole is φ15); on the cross section perpendicular to the axis of the air distribution tube 1 where the air distribution holes on the air distribution tube 1 are located, the line between the center of the air distribution hole and the center of the cross section and the line between the center of the adjacent air distribution hole and the center of the cross section form a 90° angle. It should be noted that the angle is not limited to 90°, and can also be appropriately set to other angles according to the actual needs.

[0028] Here, the gas is discharged through the air distribution holes of the air distribution pipe 1, and the air distribution holes are evenly distributed along the length direction of the air distribution pipe 1. The air distribution pipe 1 is covered with air distribution fillers 2 with a particle size of 20-30mm, and the odor passes through the air distribution fillers 2 upward through the gaps between the air distribution fillers 2 and enters the biological filler layer. The air distribution pipe 1 is fixed to the floor of the deodorizing biological box with a pipe bracket, and then filled with air distribution fillers 2, and the air distribution pipe 1 is surrounded and covered by the air distribution fillers 2. The air distribution pipe 1 is fixed and cannot be moved.

[0029] Furthermore, the wind speed in the air distribution pipe 1 is 8-10m / s. The diameter of the air distribution holes can also be 15-20mm, distributed at 45° on both sides of the lower part of the air distribution pipe 1. The air speed of the air distribution holes is 15-20m / s, and the number of air distribution holes is determined according to the total air volume.

[0030] like Figure 1 As shown, the organic filler layer H2 includes: a coconut shred board layer 3; and a peat layer 4, which contains organic matter; multiple coconut shred board layers 3 and multiple peat layers 4 are alternately stacked and evenly piled to a designed height. In this way, the uniformity problem of the pile body is well solved.

[0031] Furthermore, the compression-molded coconut shreds board layer 3 is made of pure natural coconut shreds, which are combed, shaped, hot-pressed, and a small amount of adhesive is added. The thickness of the board is generally 50-100 mm.

[0032] In addition, the organic matter content in the peat layer 4 is greater than 80%. It should be noted that the organic matter content is not limited to greater than 80%, and can also be appropriately set to other values ​​according to actual needs, such as 85%-90%. The bulk density of the organic matter in the peat layer 4 is 178kg / m 3 The moisture content of the organic matter in the peat layer 4 is about 54%. The porosity of the organic matter in the peat layer 4 is greater than 25%. The saturation rate of the organic matter in the peat layer 4 is greater than 60%. The pH value of the organic matter in the peat layer 4 is 5.5-7.

[0033] Furthermore, the coconut fiber board layer and the peat layer are combined in a ratio of 50% each. After the combination, the filler has uniform air permeability and low resistance; uniform water retention and long-term uniform humidity of the filler; high organic matter content and long service life. It should be noted that the above ratio is not limited to 50%, and can also be appropriately set to other values ​​according to the actual needs.

[0034] In addition, the size of the coconut fiber board layer is customized according to the size of the biofilter.

[0035] In summary, the combination of air distribution pipe and air distribution filler layer is used to achieve uniform air distribution and small pressure loss. The heterotrophic biological structured filler technology based on the method of stacking prefabricated coconut fiber board layer and peat layer has the advantages of easy raw material availability, low resistance, high organic matter content, long service life, and easy installation. In addition, the heterotrophic combined filler can be widely used in various municipal sewage sludge odor treatment.

[0036] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0037] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions 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 cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0039] For those skilled in the art, any modifications and changes made according to the above-mentioned implementation methods of the utility model should be included in the protection scope of the utility model without departing from the purpose of the utility model.

Claims

1. A combined organic biological deodorizing filler, characterized in that: include: an air distribution layer, the air distribution layer comprising an air distribution filler and a plurality of air distribution tubes arranged at predetermined intervals, each of the air distribution tubes being located in the air distribution filler and being completely covered by the air distribution filler; and The organic filler layer is located above the air distribution layer, and the organic filler layer includes a coconut fiber board layer and a peat layer. A plurality of the coconut fiber board layers and a plurality of the peat layers are alternately stacked and evenly piled to a designed height.

2. The combined organic biological deodorizing filler according to claim 1, characterized in that: The air distribution filler uses 20-30 mm gravel or shale as a hydrophobic material; and The gas distribution pipe is made of glass fiber reinforced plastic or PE pipe.

3. The combined organic biological deodorizing filler according to claim 2 is characterized in that: The air distribution pipe is provided with a plurality of air distribution holes, and the diameters of two adjacent air distribution holes are different; On a cross section perpendicular to the axis of the air distribution pipe where the air distribution holes on the air distribution pipe are located, a line connecting the center of the air distribution hole and the center of the cross section and a line connecting the center of an adjacent air distribution hole and the center of the cross section form an angle of 90°.

4. The combined organic biological deodorizing filler according to claim 1, characterized in that: The thickness of the coconut fiber board layer is 50-100 mm.

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