Circulating type air purification device for odor volatilized by sewage

Abstract

The utility model discloses a circulating type air purification device for odor volatilized by sewage, which is used for purifying unorganized discharged odor and comprises a fan pipeline, an air pipe and a pipeline fan, an air inlet of the air pipe is arranged above a sewage tank, and an air outlet of the air pipe is arranged in an odor environment; the pipeline fan is located in the pipeline and used for providing power for circulating airflow in the odor environment. The air purification module communicates with the air pipe; the air purification module comprises a photocatalysis unit, and the photocatalysis unit is used for removing volatile organic pollutants in unorganized discharged odor and conducting sterilization and disinfection. The circulating type air purification device can effectively remove volatile odor generated by sewage exposure in a sewage treatment plant, especially in a sewage room, a lifting pump room, a grating treatment room, a mud extrusion workshop and other spaces, and has the effects of disinfection and sterilization at the same time.

Description

Technical Field

[0001] The utility model relates to air purification equipment, in particular to a circulating air purification device for volatilizing odor from sewage. Background Art

[0002] The so-called sewage odor is caused by the fact that the decomposition of organic matter in the sewage consumes oxygen and the oxygen consumption cannot be compensated in time, resulting in anaerobic fermentation and the production of certain gases, which may take the form of fish odor, ammonia odor, rotten meat odor, rotten egg odor, feces odor, etc. Sewage contains some odorous components that can give sewage a specific odor, such as H 2 S, it will have the smell of rotten eggs, and the corruption of microorganisms in sewage, especially algae, will produce a fishy smell. In addition, industrial sewage contains certain volatile organic substances with special odors, which will also cause sewage to have a bad smell. For example, sewage containing phenol has a special phenol smell. The main components of sewage station waste gas are determined by the composition of wastewater. For example, wastewater contains a large amount of volatile organic matter such as ammonia nitrogen, acetone, and non-methane total hydrocarbons. The characteristics of unorganized waste gas are low emission height and there is not enough time and space for diffusion and dilution, so it enters people's living environment and causes harm to the human body. There are many production links of pollutants, and the pollution sources are relatively scattered, making centralized treatment difficult.

[0003] Sewage treatment stations are also divided into industrial and non-industrial sewage treatment stations. Non-industrial sewage refers to the domestic sewage of urban residents, and sewage discharged by various public facilities such as schools, hospitals, and commercial institutions. During the sewage treatment process, sewage treatment plants or treatment stations may expose sewage. At this time, the volatile odor in the sewage will pollute the sewage room, lift pump room, grille treatment room, and mud squeezing workshop. Since these polluted odors are organic compounds containing nitrogen, sulfur, hydrogen, oxygen and other elements, ammonia, hydrogen sulfide and other gases with strong irritating odors will be produced through complex chemical reactions. The odor is often the result of the action of these mixed gases. These odorous gases not only have irritating odors that cause discomfort to the human body, but also endanger human health if the concentration is too high.

[0004] In recent years, photocatalytic purification technology has become an environmental pollution control technology with good application prospects due to its mild reaction conditions, good stability, and thorough purification effect. 2 ) has good photocorrosion resistance and catalytic activity, and is stable, inexpensive, readily available, non-toxic and harmless. It is currently recognized as the best photocatalyst.

[0005] Titanium dioxide photocatalysts are usually used in powder form. In practical applications, titanium dioxide needs to be fixed on a carrier to overcome the shortcomings of suspended phase titanium dioxide photocatalysts. At present, the carrier materials mainly include glass carriers such as glass sheets, glass fiber meshes, etc., ceramic carriers such as alumina ceramic sheets, honeycomb ceramic columns, foam ceramics, etc., and metal carriers such as titanium sheets, stainless steel plates, nickel foams, etc. The usual loading method is the titanium colloid loading method or the method of adding titanium oxide grains to the binder loading method, and then sintering at high temperature to prepare a loaded photocatalyst.

[0006] In order to improve the air quality in sewage treatment plants, there is an urgent need for an efficient purification facility for the volatile odor of sewage, so as to manufacture equipment with a deodorizing function, especially a circulating air treatment device with an air purification unit manufactured using the principle of photocatalytic purification.

[0007] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0008] The purpose of the utility model is to provide a circulating air purification device with a deodorizing function, which can effectively remove the volatile odors generated by the exposure of sewage in sewage treatment plants, especially in sewage rooms, lift pump rooms, grid processing rooms and mud squeezing workshops, and has the effect of disinfection and sterilization.

[0009] To achieve the above-mentioned purpose, the utility model provides a circulating air purification device for volatilized odor of sewage, which is used to purify the odor of unorganized emission, including: a fan pipeline, which further includes an air duct and a pipeline fan, the air inlet of the air duct is arranged above the sewage tank, and the air outlet is arranged in the odor environment; the pipeline fan is located in the pipeline, and is used to provide power for the circulating airflow in the odor environment; an air purification module, which is connected to the air duct; the air purification module includes a photocatalytic unit, and the photocatalytic unit is used to remove volatile organic pollutants in the odor of unorganized emission and sterilize.

[0010] Furthermore, in the above technical solution, the photocatalytic unit includes: a photocatalytic plate, which is a foam ceramic plate loaded with photocatalytically active components; a plurality of ultraviolet LED light sources, which are UVA band LED light sources and are evenly distributed on the bars of the grille light board, and the grille light board is arranged parallel to the photocatalytic plate for irradiating the photocatalytic plate.

[0011] Furthermore, in the above technical solution, the air inlets can be arranged symmetrically in a row along the sewage tank, and the air inlets can be inclined toward the sewage. A metal primary filter can be provided at the air inlet.

[0012] Furthermore, in the above technical solution, the air duct may adopt parallel pipelines, and each parallel branch is provided with a photocatalytic unit; accordingly, each parallel branch is provided with a duct fan matching the number of photocatalytic units.

[0013] Furthermore, in the above technical solution, the air purification module can be a rectangular frame structure; the photocatalytic unit is arranged obliquely relative to the airflow direction. The grille light plate can be arranged in two pieces, which are arranged on both sides of the photocatalytic plate and are separated from the photocatalytic plate by a distance.

[0014] Furthermore, in the above technical solution, two groups of photocatalytic units are provided in each rectangular parallelepiped frame structure and arranged in a herringbone pattern.

[0015] Furthermore, in the above technical solution, the rectangular frame structure may also include a HEPA filter; the HEPA filter is arranged at the rear end of the airflow of the photocatalytic unit and is perpendicular to the airflow direction.

[0016] Furthermore, in the above technical solution, the open porosity of the foam ceramic plate can be 70% to 90%, and the pore density can be 8 to 60 ppi.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] 1) The airflow direction of the air inlet in the air purification module is tilted with the photocatalytic plate, which not only saves the volume of the entire air purification module, but also increases the wind flow area per unit cross section of the photocatalytic plate, reduces wind resistance, and effectively improves the filtration efficiency;

[0019] 2) The photocatalytic unit can effectively remove pungent organic pollutant gases such as ammonia and hydrogen sulfide from the odor emitted by domestic sewage, and can also play a role in sterilization and disinfection;

[0020] 3) The air ducts are arranged as parallel pipes, and each parallel branch is equipped with an air purification module, which can improve the adaptability of different unorganized emission sites and improve the treatment efficiency;

[0021] 4) By providing two groups of photocatalytic units in each air duct branch and arranging the two groups of photocatalytic units in a herringbone pattern, the filtering efficiency of the photocatalytic units can be further improved.

[0022] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, and at the same time to make the above and other purposes, technical features and advantages of the utility model easier to understand, one or more preferred embodiments are listed below and described in detail with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1It is a schematic diagram of the structure of a circulating air purification device for volatilizing odor from sewage according to the utility model (showing the arrangement of the purification device).

[0024] Figure 2 It is a schematic diagram of the structure of a circulating air purification device for volatilizing odor from sewage of the utility model (showing the internal structure of the air inlet and the air purification module).

[0025] Figure 3 It is an enlarged view of the air purification module in the utility model (showing the photocatalytic unit and the HEPA filter).

[0026] Figure 4 It is a cross-sectional schematic diagram of a circulating air purification device for volatilizing odor from sewage according to the utility model (showing the airflow direction).

[0027] Description of main reference numerals:

[0028] 1-sewage tank, 2-air inlet, 21-coarse filter, 3-air duct, 4-air purification module, 40-HEPA filter, 41-foam ceramic plate, 42-grille light board, 5-duct fan, 6-air outlet. DETAILED DESCRIPTION

[0029] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.

[0030] Unless explicitly stated otherwise, throughout the specification and claims, the term “comprise” or variations such as “include” or “comprising”, etc., will be understood to include the stated elements or components but not to exclude other elements or components.

[0031] In this document, for the convenience of description, spatial relative terms such as "below", "below", "down", "above", "above", "upper", etc. may be used to describe the relationship between one element or feature and another element or feature in the accompanying drawings. It should be understood that the spatial relative terms are intended to include different orientations of the object in use or operation in addition to the orientation depicted in the figure. For example, if the object in the figure is turned over, the element described as being "below" or "below" other elements or features will be oriented "above" the element or feature. Therefore, the exemplary term "below" can include both below and above. Objects may also have other orientations (rotated 90 degrees or other orientations) and the spatial relative terms used in this document should be interpreted accordingly.

[0032] In this document, the terms "first", "second", etc. are used to distinguish two different elements or parts, and are not used to limit a specific position or relative relationship. In other words, in some embodiments, the terms "first", "second", etc. can also be interchangeable.

[0033] The utility model of the circulating air purification device for volatile odor of sewage is used to purify the odor of unorganized emission. Unorganized emission refers to the unorganized and intermittent emission in the non-closed process. The unorganized odor of the utility model mainly refers to the odor emitted into the environment when non-industrial sewage is exposed. For example, sewage rooms, lifting pump rooms, grille treatment rooms and mud squeezing workshops in domestic sewage treatment plants or treatment stations often have sewage exposed. The utility model of the circulating air purification device is mainly suitable for odor purification in such places. It has the most obvious purification effect on organic pollutants in the odor and has the effect of sterilization and disinfection.

[0034] like Figure 1 , 2 As shown, the circulating purification device includes: a fan pipeline and an air purification module 4, the fan pipeline further includes an air duct 3 and a duct fan 5, the air inlet of the air duct 3 is arranged above the sewage tank 1 in a place such as a sewage room, so that the odor emitted by the flowing sewage can enter the air duct 3 through the air inlet 2 at the first time under a negative pressure state. The air outlet 6 is also arranged in the odor environment, so that an internal air circulation can be formed in a place similar to a sewage room to avoid polluting the outdoor environment. The duct fan 5 is located in the air duct pipeline, which is used to provide power for the circulating airflow in the odor environment and form a negative pressure at the air inlet 2. The air purification module 4 is connected to the air duct 3, and the air purification module 4 includes a photocatalytic unit, which is used to remove volatile organic pollutants in the odor emitted by unorganized emission and sterilize.

[0035] Further Figure 1 , 2 As shown, preferably but not restrictively, the air inlets 2 are arranged symmetrically in a row along the sewage tank 1, and the air inlets are inclined toward the sewage, that is, inclined toward the inside of the sewage tank 1, so that the odor emitted by the sewage can be more effectively collected, and each group of air inlets can be evenly spaced. Furthermore, a metal primary filter 21 is provided at the air inlet, which can effectively filter large particles at the front end of the airflow.

[0036] Further Figure 1 , 2 As shown, places with unorganized emissions such as sewage rooms generally have larger spaces and the air purification treatment capacity in different places will also vary greatly. When using standard power duct fans 5 to treat sewage odor in places of different areas, the air ducts 3 can be arranged as parallel pipelines, and each parallel branch is provided with an air purification module 4, that is, each branch is provided with a photocatalytic unit, and the number of duct fans 5 matches the number of photocatalytic units.

[0037] Further Figure 3 As shown, the photocatalytic unit includes: a photocatalytic plate and a plurality of ultraviolet LED light sources. Preferably, but not restrictively, the photocatalytic plate is a foam ceramic plate 41 loaded with photocatalytically active components. The plurality of ultraviolet LED light sources are UVA band LED light sources (not shown in the figure) and are evenly distributed on the bars of the grille light plate 42. The grille light plate 42 is arranged parallel to the foam ceramic plate 41 for irradiating the foam ceramic plate 41. The air purification module 4 is a rectangular frame structure, and the foam ceramic plate 41 is arranged in the frame structure. The grille light plate 42 can be made of two pieces, which are arranged on both sides of the foam ceramic plate 41 and are separated from the foam ceramic plate 41 by a distance. The design of the distance is suitable for the LED light source to fully irradiate the foam ceramic plate 41.

[0038] Further Figure 3 As shown, the photocatalytic unit as a whole is tilted relative to the airflow direction. Compared with the vertical setting, the inclined setting increases the wind flow area on the cross section of the unit photocatalytic plate and reduces the wind resistance, which can effectively improve the filtration efficiency. At the same time, the intake air flow will form vortices at the openings of the foam ceramic plate 41 to strengthen the contact between the gas and the catalyst. Preferably, but not restrictively, two groups of photocatalytic units can be set in each rectangular frame structure and arranged in a herringbone shape (not fully shown in the figure, a complete group of photocatalytic units is shown, including a foam ceramic plate 41 and two grille light plates 42, and the other group can only see the grille light plates 42 on one side). By arranging two groups of photocatalytic units in each air duct branch and arranging the two groups of photocatalytic units in a herringbone shape, the filtration efficiency can be further improved.

[0039] Furthermore, the open porosity of the foam ceramic plate 41 is 70% to 90%, and the pore density is 8 to 60 ppi. Preferably, but not restrictively, the photocatalytic foam ceramic plate 41 adopts an open-pore foam structure of a foam alumina-based carrier, and the photocatalyst is a foam alumina-based carrier loaded with TiO 2 Photocatalyst. Among photocatalysts, TiO 2 The particles are embedded and dispersed on the outer surface of the photocatalyst. 2 In the grains, the TiO 2 Grains account for more than 70%.

[0040] In one or more exemplary embodiments of the present invention, the ultraviolet LED light source is preferably a point light source. More preferably, the wavelength of the ultraviolet LED light source is 365nm. The use of an ultraviolet LED light source in the UVA band can improve photoelectric efficiency and reduce energy loss. The wavelength of ultraviolet light emitted by the ultraviolet LED light source is 280 to 390nm, which can be a single wavelength or a mixed wavelength.

[0041] Further Figure 3 As shown, preferably but not restrictively, the rectangular parallelepiped frame structure of the air purification module 4 also includes a HEPA filter 40, which is arranged at the rear end of the airflow of the photocatalytic unit and perpendicular to the airflow direction.

[0042] Further Figure 4 As shown, under the driving action of the duct fan 5 of each duct branch, the air inlet is in a negative pressure suction state, and the odor emitted by the sewage in the sewage tank 1 is sucked into the air inlet 2 at the first time. The metal coarse filter 21 at the air inlet 2 can filter large particles. The coarsely filtered odor enters the air purification module 4 through the air duct 3, and the odor airflow tilts into the foam ceramic plate 41 under the irradiation of the LED light source. Each branch airflow is filtered and purified by two groups of photocatalytic plates and then vertically enters the HEPA filter 40. After effective filtration by the air purification module 4, the airflow returns to the sewage site from the air outlet 6 to achieve air circulation filtration.

[0043] The photocatalytic unit of the utility model adopts a method of tilting the airflow direction of the air intake relative to the photocatalytic plate, which not only saves the volume of the entire air purification module, but also increases the wind flow area per unit photocatalytic plate cross section, reduces wind resistance, and can effectively improve the filtration efficiency. The photocatalytic unit in the air purification module can perform efficient circulation purification treatment on the environment with unorganized odor emission. The utility model of the circulating air purification device with deodorization function can have good photocatalytic degradation performance and has good application prospects.

[0044] The foregoing description of specific exemplary embodiments of the utility model is for the purpose of illustration and illustration. These descriptions are not intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the utility model and various different options and changes. Any simple modifications, equivalent changes and modifications made to the above exemplary embodiments should fall within the scope of protection of the utility model.

Claims

1. A circulating air purification device for volatilizing odor from sewage, characterized in that: Used to purify odor from unorganized emissions, including: A fan pipeline further comprises an air duct and a pipeline fan, wherein the air inlet of the air duct is arranged above the sewage tank, and the air outlet is arranged in the odor environment; the pipeline fan is located in the pipeline and is used to provide power for the circulating airflow in the odor environment; An air purification module is connected to the air duct; the air purification module includes a photocatalytic unit, and the photocatalytic unit is used to remove volatile organic pollutants in the unorganized odor and sterilize.

2. The circulating air purification device for volatilizing odor from sewage according to claim 1 is characterized in that: The photocatalytic unit comprises: A photocatalytic plate, which is a foam ceramic plate loaded with photocatalytically active components; A plurality of ultraviolet LED light sources are UVA band LED light sources and are evenly distributed on the bars of a grille light plate. The grille light plate is arranged in parallel with the photocatalytic plate and is used for irradiating the photocatalytic plate.

3. The circulating air purification device for volatilizing odor from sewage according to claim 1 or 2, characterized in that: The air inlets are symmetrically arranged in a row along the sewage trough, and the air inlets are inclined toward the sewage direction.

4. The circulating air purification device for volatilizing odor from sewage according to claim 3 is characterized in that: A metal primary filter is provided at the air inlet.

5. The circulating air purification device for volatilizing odor from sewage according to claim 1 or 2, characterized in that: The air duct adopts parallel pipelines, and each parallel branch is provided with the photocatalytic unit; accordingly, each parallel branch is provided with the pipeline fan matching the number of the photocatalytic units.

6. The circulating air purification device for volatilizing odor from sewage according to claim 2, characterized in that: The air purification module is a rectangular parallelepiped frame structure; the photocatalytic unit is arranged obliquely relative to the airflow direction.

7. The circulating air purification device for volatilizing odor from sewage according to claim 6, characterized in that: The grille light panels are divided into two pieces, which are arranged on both sides of the photocatalytic plate and are spaced a distance from the photocatalytic plate.

8. The circulating air purification device for volatilizing odor from sewage according to claim 7, characterized in that: The photocatalytic units are provided in two groups in each of the rectangular parallelepiped frame structures and are arranged in a herringbone pattern.

9. The circulating air purification device for volatilizing odor from sewage according to claim 6, characterized in that: The rectangular parallelepiped frame structure also includes a HEPA filter; the HEPA filter is arranged at the rear end of the airflow of the photocatalytic unit and is perpendicular to the airflow direction.

10. The circulating air purification device for volatilizing odor from sewage according to claim 2, characterized in that: The open porosity of the foam ceramic plate is 70% to 90%, and the pore density is 8 to 60 ppi.

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