Floating island type odor treatment device

Abstract

The invention relates to a floating island type odor treatment device which comprises at least one floating island type odor treatment unit, the density of the floating island type odor treatment unit is smaller than that of water, each floating island type odor treatment unit comprises a shell, a containing cavity is defined by the shell, through holes are formed in the surface of the shell, and the through holes are communicated with the containing cavity. Gas enters the accommodating cavity through the through hole and is discharged through the through hole; the biological deodorization filler is arranged in the accommodating cavity, and the biological deodorization filler comprises microorganisms for treating odor and filler for adhering the microorganisms. The floating island type odor treatment unit with the density smaller than that of water is formed by arranging the biological deodorization filler for treating odor in the shell with the surface through holes, so that low-cost, unpowered and unorganized emission environment-friendly biological deodorization can be realized, and the floating island type odor treatment unit can be widely applied to tank bodies with various shapes.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment technology, and in particular to a floating island type odor treatment device. Background Technology

[0002] Wastewater treatment plants, as a key component of urban infrastructure, play an irreplaceable role in purifying water quality, protecting the ecological environment, and promoting the recycling of water resources. However, throughout the entire wastewater treatment process, especially in stages such as influent lifting, bar filtration, grit removal, primary sedimentation, biological treatment (e.g., anaerobic and anoxic zones), sludge thickening, and dewatering, large amounts of malodorous gases are inevitably generated. These gases not only have extremely unpleasant odors but may also harm human health, causing strong complaints and resentment from surrounding residents and affecting social harmony.

[0003] With the increasing stringency of odor emission standards at municipal wastewater treatment plants, it is necessary to treat the generated odors to meet the plant boundary emission standards. Currently, the main method for odor treatment is to collect and deodorize the odors. This is achieved by covering and sealing large wastewater tanks, anaerobic-anoxic tanks, and biological aeration tanks, concentrating the odors within the covered space. Then, exhaust fans continuously draw the odors away and transport them to deodorization equipment, where they are then discharged in an organized manner through exhaust stacks. However, wastewater tanks and anaerobic-anoxic tanks have large areas and dimensions, making the covering and sealing costly. Furthermore, the continuous collection and transport of odors by fans consumes a significant amount of electricity. Summary of the Invention

[0004] To address the aforementioned technical problems, this application provides a floating island-type odor treatment device, comprising at least one floating island-type odor treatment unit, wherein the density of the floating island-type odor treatment unit is less than the density of water, and each floating island-type odor treatment unit comprises:

[0005] The shell encloses a receiving cavity, and the surface of the shell is provided with through holes, through which gas enters the receiving cavity and exits through the through holes;

[0006] Biological deodorizing packing material is placed inside the containment cavity. The biological deodorizing packing material includes microorganisms for treating odors and packing material for attaching microorganisms.

[0007] In one embodiment, the density of the floating island odor treatment unit is less than or equal to 350 kg / m³.

[0008] In one embodiment, the packing material includes buoyancy packing material and organic packing material, with the buoyancy packing material disposed on the side of the floating island odor treatment unit closer to the water surface and the organic packing material disposed on the side of the floating island odor treatment unit away from the water surface.

[0009] In one embodiment, the buoyancy filler includes inorganic pumice, and the organic filler includes fibrous natural organic matter and peat natural organic matter, wherein the peat natural organic matter is coated with fibrous natural organic matter.

[0010] In one embodiment, the microorganisms used to treat odors include heterotrophic bacteria.

[0011] In one embodiment, the housing includes an upper plate, a lower plate, and at least one side plate, and the upper plate, the lower plate, and the side plate are provided with a plurality of through holes.

[0012] In one embodiment, the multiple floating island odor treatment units are all identical in shape and size, and the shape of the housing includes at least one of cuboid, sphere, cylinder, and polyhedron.

[0013] In one embodiment, at least half of the floating island odor treatment unit floats above the water surface, and the height of the floating island odor treatment unit ranges from 200mm to 300mm, while the height above the water surface ranges from 100mm to 150mm.

[0014] In one embodiment, adjacent floating island odor treatment units are detachably connected to each other.

[0015] In one embodiment, multiple floating island-type odor treatment units of the floating island-type odor treatment device cover the entire surface of the pool.

[0016] This application provides a floating island-type odor treatment device, which forms a floating island-type odor treatment unit with a density less than water by setting biological deodorizing packing material for treating odors inside a shell with surface through holes. This can achieve low-cost, power-free, and fugitive emission environmentally friendly biological deodorization, and can be widely used in pools of various shapes. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0018] Figure 1 This is a top view schematic diagram of the floating island-type odor treatment device of this application;

[0019] Figure 2 This is a cross-sectional schematic diagram of the floating island-type odor treatment unit of this application.

[0020] Figure Labels

[0021] 100. Floating island type odor treatment unit

[0022] 110, Shell 120, Biological deodorizing packing

[0023] 111. Upper plate 112. Lower plate

[0024] 113. Side plate; 114. Connector

[0025] 101. Through hole

[0026] 121. Buoyancy packing; 122. Organic packing.

[0027] 1221. Peat-based natural organic matter 1222. Fibrous natural organic matter Detailed Implementation

[0028] To better understand the above-mentioned objectives, features, and advantages of this application, embodiments of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0029] Numerous specific details are set forth in the following description to provide a thorough understanding of this application, but this application may also be implemented in other ways than those described herein. Clearly, the embodiments described in the specification are only a portion of, and not all, of the embodiments of this application.

[0030] Currently, the main method for odor control in wastewater treatment plants is to collect and deodorize the odor. This is achieved by covering and sealing large wastewater tanks, anaerobic-anoxic tanks, and biological aeration tanks, concentrating the odor within the covered space. Then, exhaust fans continuously draw the odor away and transport it to deodorization equipment, where it is then discharged in an organized manner through exhaust stacks. However, wastewater tanks and anaerobic-anoxic tanks are large in area and size, making the covering and sealing costly. Furthermore, the continuous collection and transport of odor by fans consumes a significant amount of electricity.

[0031] To address the aforementioned problems, this application provides a floating island-type odor treatment device, referring to... Figure 1 and Figure 2 As shown, the floating island odor treatment device includes at least one floating island odor treatment unit 100, the density of which is less than that of water, and each floating island odor treatment unit 100 includes:

[0032] The shell 110 encloses a receiving cavity, and a through hole 101 is provided on the surface of the shell, through which gas enters the receiving cavity and is discharged.

[0033] Biological deodorizing packing 120 is disposed in the receiving cavity. Biological deodorizing packing 120 includes microorganisms for treating odors and packing for attaching microorganisms.

[0034] In one embodiment, refer to Figure 1As shown, a floating island-type odor treatment device typically includes multiple floating island-type odor treatment units 100, each covering a portion of the pool surface so that the formed floating island-type odor treatment device completely or almost completely covers the pool surface. To prevent odors from escaping from areas of the pool surface not covered by the floating island-type odor treatment device, the floating island-type odor treatment device should cover the pool surface as completely as possible, with a coverage area of ​​at least 90%. When the pool size is small, a single floating island-type odor treatment unit 100 can be used to completely cover the surface of the small pool.

[0035] In one embodiment, the shape of the floating island-type odor treatment unit 100 can be configured as needed, such as a cuboid, sphere, cylinder, or polyhedron. The shape of the floating island-type odor treatment device composed of multiple floating island-type odor treatment units 100 must be consistent with the shape of the surface of the covered pool, such as a rectangle, circle, or polygon. The shape of a single floating island-type odor treatment unit 100 can be the same as or different from the overall shape of the floating island-type odor treatment device; this application does not impose any restrictions on this.

[0036] In one embodiment, refer to Figure 2 As shown, the housing 110 includes an upper plate 111 and a lower plate 112 disposed opposite to each other. The lower plate 112 is used to contact the water surface, and the upper plate 111 is used to float above the water surface and contact the air. The upper plate 111 and the lower plate 112 are arranged parallel or nearly parallel, for example, the angle between the extension lines of the upper plate 111 and the lower plate 112 is less than 10°. The housing 110 also includes at least one side plate 113 disposed between the upper plate 111 and the lower plate 112. The upper plate 111 and the side plate 113 are fixedly connected or detachably connected by a connector 114, and the lower plate 112 and the side plate 113 are fixedly connected or detachably connected by a connector 114, so as to enclose the upper plate 111, the lower plate 112 and the side plate 113 to form a receiving cavity.

[0037] In one embodiment, the number of side plates 113 can be set as needed. For example, when the number of side plates 113 is 1, the formed shell 110 can be cylindrical; when the number of side plates 113 is 2, the formed shell 110 can be semi-cylindrical; when the number of side plates 113 is 3, the formed shell 110 can be triangular prism; when the number of side plates 113 is 4, the formed shell 110 can be a hexahedral structure, such as a cuboid or cube; and when the number of side plates 113 is 6, the formed shell 110 can be a hexagonal prism. Since the floating island odor treatment device includes multiple floating island odor treatment units 100, the floating island odor treatment units 100 used to form the same floating island odor treatment device are usually standardized, that is, the shape and size of each floating island odor treatment unit 100 used to form the same floating island odor treatment device are the same. To prevent odors from escaping between adjacent floating island-type odor treatment units 100, the housing 110 is typically designed in a shape that allows for close arrangement, such as a cuboid, cube, regular triangular prism, or regular hexagonal prism (honeycomb). (See reference...) Figure 2 As shown, the shell 110 has a hexahedral structure. The dimensions of the shell 110 can be designed according to the dimensions of the pool, such as a length of 0.5m, 1m, 1.5m, 2m, 3m, etc., a width of 0.3m, 0.5m, 1m, 1.5m, 2m, etc., and a height of 200mm, 250mm, 300mm, 500mm, etc. This application does not impose any restrictions on this.

[0038] In one embodiment, the floating island odor treatment device can be formed by arranging multiple floating island odor treatment units 100 without connection. For example, multiple floating island odor treatment units 100 are placed in a pool, and the multiple floating island odor treatment units 100 are closely arranged and cover the surface of the pool, thus forming a floating island odor treatment device. However, in order to facilitate the control of the state of the multiple floating island odor treatment units 100 on the pool surface and to prevent the floating island odor treatment units 100 from drifting freely on the pool surface, adjacent floating island odor treatment units are usually detachably connected to each other, so that the floating island odor treatment device is integrated into one unit, such as... Figure 1 As shown. Connecting multiple floating island-type odor treatment units 100 into one unit not only prevents the floating island-type odor treatment units 100 from drifting freely on the pool surface, but also facilitates control of the overall position or movement of the floating island-type odor treatment device. The detachable connection method allows for the connection of different numbers of floating island-type odor treatment units 100 in different ways according to the shape and size of different pools to meet the needs of covering the pool surface. Furthermore, when one or more floating island-type odor treatment units 100 malfunction or are damaged, the faulty unit can be removed individually for easy repair or replacement by staff.

[0039] In one embodiment, the surface of the housing 110 is provided with through holes 101 for water and air passage. Specifically, through holes 101 are provided on the upper plate 111, lower plate 112, and side plate 113 of the housing 110. The shape of the through holes 101 includes, but is not limited to, circles, squares, triangles, polygons, etc. The size of the through holes 101 should simultaneously meet the requirements of water and air passage and preventing the packing material inside the housing from falling out, and is usually set to 2cm to 5cm, such as 2cm, 3cm, 5cm, etc. The upper plate 111, lower plate 112, and side plate 113 of the housing 110 are provided with multiple through holes 101, and the arrangement of the through holes 101 includes, but is not limited to, matrix arrangement, staggered arrangement (e.g., rhomboid arrangement, honeycomb arrangement), concentric circle arrangement, etc., and this application does not limit this. Typically, odorous gases such as volatile gases from the surface of the sewage tank and aeration gases from the water enter the floating island odor treatment unit 100 through the through hole 101 of the lower plate 112. After being deodorized by the floating island odor treatment unit 100, the gases are discharged through the through hole 101 of the upper plate 111.

[0040] In one embodiment, a biological deodorizing packing material 120 is disposed within the accommodating cavity formed by the shell 110 for biological deodorization of odorous gases. The biological deodorizing packing material 120 includes microorganisms for treating odorous gases and packing material for attaching the microorganisms. The microorganisms for treating odorous gases can be autotrophic or heterotrophic bacteria, or a combination of both, to decompose hydrogen sulfide, ammonia, sulfides, skatole, volatile organic compounds, etc., in the odorous gases, thereby achieving deodorization. Furthermore, the inorganic salts generated during biological deodorization do not affect wastewater treatment. For example, under the action of microorganisms, hydrogen sulfide and ammonia can be decomposed into sulfates, nitrates, and water, thereby achieving deodorization.

[0041] For example, the packing includes buoyancy packing 121 and organic packing 122, wherein the buoyancy packing 121 is disposed on the side of the floating island odor treatment unit 100 near the water surface, and the organic packing 122 is disposed on the side of the floating island odor treatment unit 100 away from the water surface.

[0042] In one embodiment, the buoyancy filler 121 needs to be made of a material with low density, high buoyancy, and hydrophobic and breathable properties. Optionally, the buoyancy filler 121 may include, but is not limited to, inorganic pumice. Inorganic pumice, with its porous, lightweight, high specific surface area, and stable physicochemical properties, can provide a suitable environment for deodorizing microbial communities. Furthermore, inorganic pumice is naturally available, non-toxic, and harmless, and therefore has been widely used in the environmental protection field. (Refer to...) Figure 2 As shown, the buoyancy filler 121 is disposed inside the housing 110 on the side near the lower plate 112. It not only provides buoyancy for the floating island odor treatment unit 100, but also, with its hydrophobic properties, prevents the organic filler 122 from disintegrating after being soaked in water.

[0043] In one embodiment, taking heterotrophic bacteria as the deodorizing microorganisms as an example, the biological deodorizing filler 120 also needs to provide organic filler 122 to promote the growth and maintain the activity of heterotrophic bacteria. Peat-based natural organic matter 1221, with its abundant organic matter, unique physical structure, and chemical properties, provides a near-ideal environment for the growth and function of heterotrophic bacteria, extending the replacement cycle of the organic filler 122. Furthermore, peat-based natural organic matter 1221 is naturally available, non-toxic, and harmless, and is widely used as a highly efficient biological medium in the environmental protection field. However, peat-based natural organic matter 1221 easily disperses when exposed to water and is not suitable for direct contact with water. Therefore, this embodiment also provides fibrous natural organic matter 1222 as the organic filler 122. Fiberous natural organic matter 1222 can provide a good growth and attachment environment for heterotrophic bacteria and is not easily dispersed when exposed to water. Encapsulating peat-based natural organic matter 1221 with fibrous natural organic matter 1222 serves two purposes: firstly, it allows for the preparation of a molded organic filler 122, facilitating replacement; secondly, the fibrous natural organic matter 1222 is placed between the peat-based natural organic matter 1221 and the through-hole 101, and between the peat-based natural organic matter 1221 and the buoyancy filler 121, preventing the peat-based natural organic matter 1221 from being lost upon contact with water. (Refer to...) Figure 2 As shown, fibrous natural organic matter 1222 coats peat natural organic matter 1221 as organic filler 122, and is placed inside the shell 110 on the side near the upper plate 111. After biological deodorization of the odorous gas entering the shell 110 through the through hole 101, the gas is discharged through the through hole 101.

[0044] In one embodiment, the packing material needs to maintain a certain temperature and humidity to provide a suitable living environment for deodorizing microorganisms. Therefore, wastewater can enter the housing 110 through the through-holes 101 of the lower plate 112 or side plate 113, wetting the organic packing material 122 and helping it maintain temperature and humidity. Similarly, rainwater can enter the housing 110 through the through-holes 101 of the upper plate 111, wetting the organic packing material 122 and also helping it maintain temperature and humidity. Excess water can flow out through the through-holes 101, preventing water accumulation inside the housing 110, which also helps the organic packing material 122 maintain temperature and humidity.

[0045] In one embodiment, the density of the floating island-type odor treatment unit 100 formed by the shell 110, buoyancy packing 121, and organic packing 122 needs to be less than the density of water (1000 kg / m³). 3 This allows the floating island-type odor treatment unit 100 to float on the water surface. Optionally, the density of the floating island-type odor treatment unit is less than or equal to 350 kg / m³. 3This is to ensure that at least half of the floating island odor treatment unit 100 floats above the water surface. For example, when the height of the floating island odor treatment unit is in the range of 200mm to 300mm, the height above the water surface is in the range of 100mm to 150mm.

[0046] In one embodiment, to reduce the density of the floating island-type odor treatment unit 100, both the shell 110 and the packing material are made of lightweight materials. The materials used to form the shell 110 include, but are not limited to, weather-resistant plastic shell plates, which are not only low in density but also have stable physical and chemical properties, do not react with the wastewater in the tank, and have a long service life. The connectors 114 between the upper plate 111, lower plate 112, and side plates 113 are also made of lightweight materials such as plastic cable ties. The buoyancy packing 121 inside the shell 110 is made of lightweight inorganic pumice, and the organic packing 122 uses peat-based natural organic matter 1221 and fibrous natural organic matter 1222, both of which are lightweight biological deodorizing materials.

[0047] Floating island odor control devices can be applied to odor treatment in various tanks of wastewater treatment plants, such as sewage tanks, equalization tanks, emergency storage tanks, anaerobic-anoxic tanks, and aerobic tanks. Using floating island odor control devices eliminates the need to cover and seal the entire tank. The devices employ a non-powered deodorization method, eliminating the need for fans and avoiding significant power consumption. Furthermore, the deodorized emissions are unorganized, requiring no exhaust stacks. Therefore, using floating island odor control devices significantly reduces deodorization costs.

[0048] This application provides a floating island-type odor treatment device, which forms a floating island-type odor treatment unit with a density less than water by setting biological deodorizing packing material for treating odors inside a shell with surface through holes. This can achieve low-cost, power-free, and fugitive emission environmentally friendly biological deodorization, and can be widely used in pools of various shapes.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to the process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0050] The above descriptions are merely embodiments of this application, which enable those skilled in the art to understand and implement this application. Various modifications to the embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and features disclosed herein.

Claims

1. A floating island-type odor treatment device, characterized in that, It includes at least one floating island-type odor treatment unit, the density of which is less than that of water, and each of the floating island-type odor treatment units includes: A housing that encloses a receiving cavity, and a through hole provided on the surface of the housing, through which gas enters the receiving cavity and exits. A biological deodorizing packing material is disposed within the receiving cavity. The biological deodorizing packing material includes microorganisms for treating odors and packing material for attaching the microorganisms.

2. The floating island type odor treatment device according to claim 1, characterized in that, The density of the floating island-type odor treatment unit is less than or equal to 350 kg / m³. 3 .

3. The floating island type odor treatment device according to claim 1, characterized in that, The filler includes buoyancy filler and organic filler. The buoyancy filler is located on the side of the floating island odor treatment unit closer to the water surface, and the organic filler is located on the side of the floating island odor treatment unit away from the water surface.

4. The floating island type odor treatment device according to claim 3, characterized in that, The buoyancy filler includes inorganic pumice, and the organic filler includes fibrous natural organic matter and peat natural organic matter, wherein the peat natural organic matter is coated by the fibrous natural organic matter.

5. The floating island type odor treatment device according to claim 1, characterized in that, The microorganisms used to treat odors include heterotrophic bacteria.

6. The floating island type odor treatment device according to claim 1, characterized in that, The housing includes an upper plate, a lower plate, and at least one side plate, and each of the upper plate, lower plate, and side plate is provided with multiple through holes.

7. The floating island type odor treatment device according to claim 1, characterized in that, The multiple floating island-type odor treatment units are all identical in shape and size, and the shape of the shell includes at least one of cuboid, sphere, cylinder, and polyhedron.

8. The floating island type odor treatment device according to claim 7, characterized in that, At least half of the floating island-type odor treatment unit floats above the water surface, and the height of the floating island-type odor treatment unit ranges from 200mm to 300mm, while the height above the water surface ranges from 100mm to 150mm.

9. The floating island type odor treatment device according to claim 1, characterized in that, The adjacent floating island odor treatment units are detachably connected to each other.

10. The floating island type odor treatment device according to claim 1, characterized in that, The floating island odor treatment device has multiple floating island odor treatment units covering the entire surface of the pool.

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