Sewage treatment device and system

Abstract

The invention provides a sewage treatment device and system, and relates to the technical field of environmental protection equipment, and the sewage treatment device comprises a shell, a filter part and a sterilization assembly. A precipitation bin and a filtering bin are defined in the shell, the filtering bin is communicated with the precipitation bin through a communicating opening, and a second outlet is formed in the end, away from the communicating opening, of the filtering bin. The sterilization assembly is located between the filtering piece and the second outlet. The sterilization assembly comprises a diffusion part, a material conveying pipe and a jet flow part, one end of the jet flow part communicates with the material conveying pipe, the end, away from the material conveying pipe, of the jet flow part faces the diffusion part, the diffusion part is provided with a plurality of diffusion holes, and the surface of the diffusion part is coated with a reaction coating. The sewage treatment device is used for precipitating and filtering sewage, is compact in structure and high in space utilization rate, carries out chemical reaction in real time to produce reaction products to sterilize and purify the sewage, and can also directly disinfect the sewage, so that the sewage purification treatment effect of the sewage treatment device is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental protection equipment, and more particularly, to a sewage treatment device and system. Background Art

[0002] Sewage treatment refers to the use of physical, chemical or biological methods to remove pollutants in wastewater such as domestic sewage and industrial wastewater, so that the water quality meets the discharge standards or reuse requirements. In the process of sewage treatment, the sedimentation and filtration components of common sewage treatment devices are independently arranged, the pipeline is relatively complex, and the sterilization and purification effect on sewage treatment is poor. Summary of the Invention

[0003] The purpose of the present invention is to provide a sewage treatment device and system, which has a compact structure, high space utilization rate, is convenient to utilize hydraulic conditions, and the reactants react with the reaction coating coated on the diffusion member in real time to produce reaction products for sterilizing and purifying sewage. In addition, the reactants can also directly disinfect the sewage, further improving the purification effect of the sewage treatment device on sewage.

[0004] The first aspect of the present invention provides a sewage treatment device, which includes: A housing, a sedimentation chamber and a filtration chamber are defined in the housing. An inlet and a first outlet are respectively arranged at opposite ends of the sedimentation chamber. The filtration chamber is connected to the sedimentation chamber through a communication port, and a second outlet is arranged at one end of the filtration chamber away from the communication port; A filter member, which is arranged in the filtration chamber; A sterilization component, which is arranged in the sedimentation chamber, and the sterilization component is arranged opposite to the filter member, and the sterilization component is located between the filter member and the second outlet; The sterilization component includes a diffusion member, a feed pipe and a jet member. One end of the jet member is connected to the feed pipe, and the end of the jet member away from the feed pipe is arranged towards the diffusion member. The diffusion member is provided with a plurality of diffusion holes, and the surface of the diffusion member is coated with a reaction coating.

[0005] In a possible embodiment of the present invention, the number of the sedimentation chambers is plural, and the plural sedimentation chambers are respectively located at opposite ends of the housing along a first direction.

[0006] In a possible embodiment of the present invention, adjacent two sedimentation chambers are separated by a first partition board, and the first partition board is detachably connected to the housing.

[0007] In a possible embodiment of the present invention, the housing is further provided with a second partition board, the communication port is located on the second partition board, the number of the filter chambers is two, the sedimentation chamber includes a first sedimentation chamber and a second sedimentation chamber, both of the two filter chambers are located between the first sedimentation chamber and the second sedimentation chamber, one of the filter chambers corresponds to a plurality of the first sedimentation chambers through the second partition board, and the other filter chamber corresponds to a plurality of the second sedimentation chambers through the second partition board.

[0008] In a possible embodiment of the present invention, the number of the first outlets is two, and the two first outlets respectively correspond to the first sedimentation chamber and the second sedimentation chamber.

[0009] In a possible embodiment of the present invention, the two filter chambers are independently arranged and parallel to each other.

[0010] In a possible embodiment of the present invention, the sedimentation chamber is provided with a feeding part, the end of the feeding part is provided with the first outlet, the cross-sectional area of the feeding part gradually decreases in the direction from the liquid inlet to the first outlet, and the cross-sectional area of the feeding part is the smallest at the position of the first outlet.

[0011] In a possible embodiment of the present invention, the number of the jet parts is multiple, and the multiple jet parts are installed at intervals along a second direction on the feeding pipe, and the second direction is perpendicular to the first direction.

[0012] In a possible embodiment of the present invention, the filter element is provided with a filter adsorption layer.

[0013] The second aspect of the present invention provides a sewage treatment system, including the sewage treatment device in any one of the above embodiments.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: for a sewage treatment device and system provided by the present invention, sewage enters the sedimentation chamber through the liquid inlet for sedimentation, the precipitates such as sludge can be discharged through the first outlet, the sedimented sewage enters the filter chamber through the communication port, and the filter element preliminarily filters the sewage in the filter chamber, so as to perform sedimentation filtration on the sewage. The structure is compact and the space utilization rate is high. The feeding pipe of the sterilization component is used to input reactants such as ozone, and the reactants form a high-pressure air flow through the jet parts and are ejected onto the diffusion part. The diffusion holes of the diffusion part are convenient for increasing the contact area, and the diffusion part is installed in the filter chamber to facilitate the use of hydraulic conditions. The reactants react with the reaction coating coated on the diffusion part in real time to produce reaction products for sterilizing and purifying the sewage. In addition, the reactants can also directly disinfect the sewage, so that the sewage and the reactants are fully mixed to ensure the purification effect, and further improve the purification treatment effect of the sewage treatment device on the sewage. Description of the Drawings

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and thus should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0016] Figure 1 Schematic diagram of the three-dimensional structure of the sewage treatment device provided in some embodiments of the present invention Figure 1 ; Figure 2 Schematic diagram of the three-dimensional structure of the sewage treatment device provided in some embodiments of the present invention Figure 2 ; Figure 3 Schematic diagram of the three-dimensional structure of the sterilization component of the sewage treatment device provided in some embodiments of the present invention.

[0017] Main element symbol description; 100 - Sewage treatment device; 110 - Housing; 111 - Sedimentation tank; 1111 - Liquid inlet; 1112 - First outlet; 1113 - First sedimentation chamber; 1114 - Second sedimentation chamber; 112 - Filtration tank; 1121 - Second outlet; 113 - Communication port; 114 - First partition; 115 - Second partition; 116 - Feeding part; 120 - Filter element; 130 - Sterilization component; 131 - Diffusion part; 1311 - Diffusion hole; 132 - Feeding pipe; 133 - Jet part; X - First direction; Y - Second direction; Z - Third direction. Specific embodiments

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0020] It should be noted that like reference numerals and letters refer to like items in the following figures; thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

[0021] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is customarily placed during use. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0022] In addition, terms such as "horizontal", "vertical", "hanging" do not mean that the components are required to be absolutely horizontal or hanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but may be slightly inclined.

[0023] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "arranged", "installed", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] The following will, with reference to the drawings, elaborate on some embodiments of the present invention. Without conflict, the following embodiments and the features in the embodiments may be combined with each other.

[0025] Reference Figure 1 As shown, an embodiment of the present application provides a sewage treatment device 100, which includes a housing 110, a filter element 120, and a sterilization assembly 130.

[0026] Specifically, in combination with Figure 2 and Figure 3As shown, a sedimentation chamber 111 and a filtration chamber 112 are defined within the housing 110. A liquid inlet 1111 and a first outlet 1112 are provided at opposite ends of the sedimentation chamber 111, respectively. The filtration chamber 112 is connected to the sedimentation chamber 111 via a communication port 113. A second outlet 1121 is provided at one end of the filtration chamber 112 away from the communication port 113. The filter element 120 is disposed within the filtration chamber 112. Sewage enters the sedimentation chamber 111 through the liquid inlet 1111 for sedimentation. Sediments such as sludge that have been precipitated can be discharged through the first outlet 1112. The precipitated sewage enters the filtration chamber 112 through the communication port 113. The filter element 120 performs preliminary filtration on the sewage within the filtration chamber 112. The filter element 120 includes at least a ceramsite filler layer, thereby performing sedimentation and filtration on the sewage. The structure is compact and space utilization is high.

[0027] In this embodiment, the sterilization component 130 is disposed in the sedimentation bin 111 , and the sterilization component 130 is disposed opposite to the filter element 120 , and the sterilization component 130 is located between the filter element 120 and the second outlet 1121 . The sterilization component 130 includes a diffuser 131, a delivery pipe 132 and a jet component 133. One end of the jet component 133 is connected to the delivery pipe 132, and the jet component 133 is arranged toward the diffuser 131 at one end away from the delivery pipe 132. The diffuser 131 is provided with a plurality of diffusion holes 1311, and the surface of the diffuser 131 is coated with a reactive coating. Accordingly, the delivery pipe 132 of the sterilization component 130 is used to input reactants such as ozone, and the reactants form a high-pressure airflow through the jet component 133 and are sprayed onto the diffuser 131. The diffusion holes 1311 of the diffuser 131 are used to increase the contact area. The diffuser 131 is installed in the filter bin 112 to utilize hydraulic conditions. The reactants and the reactive coating coated on the diffuser 131 react chemically in real time to produce reaction products to sterilize and purify the sewage. In addition, the reactants can also directly disinfect the sewage, so that the sewage and the reactants are fully mixed to ensure the purification effect.

[0028] It is understandable that the reactant can be ozone, which destroys the biological structure of microorganisms through its strong oxidizing properties to achieve the purpose of sterilizing and disinfecting sewage. Titanium dioxide (TiO2) acts as a solid-phase catalyst, and its surface active sites can adsorb ozone (O3), promote the decomposition of O3 or react with water, hydroxyl (OH⁻), etc. to generate highly oxidizing hydroxyl radicals (OH), which will produce a catalytic oxidation effect, improve the utilization rate of the reactant ozone, trigger a free radical chain reaction, enhance the oxidative degradation ability of organic pollutants, and thus improve the sterilization and disinfection effect.

[0029] Sewage treatment process of the sewage treatment device 100: First, the sewage enters the sedimentation chamber 111 through the liquid inlet 1111. The sedimentation chamber 111 preliminarily sediments the sewage, causing solids such as sludge in the sewage to sink and be discharged through the first outlet 1112, while maintaining the liquid level in the sedimentation chamber 111 higher than that in the filtration chamber 112. The upper clarified liquid in the sedimentation chamber 111 flows into the filtration chamber 112 through the communication port 113. The filter element 120 in the filtration chamber 112 preliminarily filters the clarified liquid, screening out suspended particles and improving the cleanliness of the clarified liquid. The initially filtered liquid after passing through the filter element 120 passes through the diffuser 131. At this time, reactants such as ozone are input through the feed pipe 132, and the reactants form a high-pressure gas flow through the jet element 133 and are ejected onto the diffuser 131. The reactants react with the reaction coating coated on the diffuser 131 in real time to produce reaction products. When the initially filtered liquid passes through the diffuser 131, the initially filtered liquid comes into full contact with the diffusion holes 1311 of the diffuser 131. The ozone and reaction products at the position of the diffuser 131 act synergistically to disinfect the initially filtered liquid. The treated clarified liquid is discharged from the sewage treatment device 100 through the second outlet 1121, completing the treatment of the sewage.

[0030] Reference Figure 1 and Figure 2 As shown, the sewage treatment device 100 has a first direction X, a second direction Y, and a third direction Z, where the first direction X, the second direction Y, and the third direction Z are perpendicular to each other pairwise. Exemplarily, the first direction X is taken as the length direction of the sewage treatment device 100, the second direction Y is taken as the width direction of the sewage treatment device 100, and the third direction Z is taken as the height direction of the sewage treatment device 100. It can be understood that the above definitions are only for facilitating the understanding of the relative position relationships of various parts in the sewage treatment device 100 and should not be construed as a limitation to this application.

[0031] In one embodiment, optionally, reference Figure 1 As shown, the number of the sedimentation chambers 111 is plural. Along the first direction X, the plural sedimentation chambers 111 are respectively located at opposite ends of the housing 110, so as to facilitate the sedimentation and sludge discharge operations of the independently provided sedimentation chambers 111. A certain sedimentation chamber 111 can be cleaned and maintained separately, and the plural sedimentation chambers 111 will not affect or hinder each other, ensuring that the sewage treatment process of the sewage treatment device 100 can proceed continuously.

[0032] In one embodiment, optionally, as Figure 1As shown, the precipitation chamber 111 is provided with a blanking part 116. The end of the blanking part 116 is provided with the first outlet 1112. The cross-sectional area of the blanking part 116 gradually decreases in the direction from the liquid inlet 1111 to the first outlet 1112. The cross-sectional area of the blanking part 116 is the smallest at the position of the first outlet 1112. The tapered cross-sectional area design of the blanking part 116 realizes the accelerated flow of the liquid through Bernoulli's principle, improves the liquid flow rate at the first outlet 1112, avoids the deposition of suspended particles in the sewage in the blanking part 116, and reduces the risk of blockage.

[0033] In summary, the sewage of the sewage treatment device 100 enters the precipitation chamber 111 through the liquid inlet 1111 for precipitation. The precipitates such as sludge can be discharged through the first outlet 1112. The precipitated sewage enters the filtration chamber 112 through the communication port 113. The filter element 120 preliminarily filters the sewage in the filtration chamber 112, and then performs precipitation filtration on the sewage. The structure is compact and the space utilization rate is high. The feed pipe 132 of the sterilization component 130 is used to input reactants such as ozone. The reactants are ejected onto the diffusion part 131 in the form of a high-pressure air flow through the jet part 133. The diffusion holes 1311 of the diffusion part 131 are convenient for increasing the contact area. The diffusion part 131 is installed in the filtration chamber 112 to facilitate the use of hydraulic conditions. The reactants react with the reaction coating applied on the diffusion part 131 in real time to produce reaction products to sterilize and purify the sewage. In addition, the reactants can also directly disinfect the sewage, so that the sewage and the reactants are fully mixed to ensure the purification effect, and further improve the purification effect of the sewage treatment device 100 on the sewage.

[0034] Reference Figures 1 to 3 As shown, an embodiment of the present application provides another sewage treatment device 100, which includes a housing 110, a filter element 120, and a sterilization component 130.

[0035] Specifically, in combination with Figure 2 and Figure 3As shown, a sedimentation chamber 111 and a filtration chamber 112 are defined within the housing 110. An inlet 1111 and a first outlet 1112 are respectively provided at opposite ends of the sedimentation chamber 111. The filtration chamber 112 is connected to the sedimentation chamber 111 through a communication port 113. A second outlet 1121 is provided at one end of the filtration chamber 112 away from the communication port 113. The filter element 120 is disposed within the filtration chamber 112. Sewage enters the sedimentation chamber 111 through the inlet 1111 for sedimentation. Sediments such as sludge can be discharged through the first outlet 1112. The sedimented sewage enters the filtration chamber 112 through the communication port 113. The filter element 120 preliminarily filters the sewage within the filtration chamber 112. The filter element 120 at least includes a ceramsite filler layer, thereby performing sedimentation filtration on the sewage. The structure is compact and the space utilization rate is high. Additionally, the filter element 120 is further provided with a biodegradation layer, and the biodegradation layer can degrade some organic pollutants. For example, the COD removal rate is about 10%-15%.

[0036] In this embodiment, the sterilization assembly 130 is disposed within the sedimentation chamber 111, and the sterilization assembly 130 is disposed opposite to the filter element 120, and the sterilization assembly 130 is located between the filter element 120 and the second outlet 1121. The sterilization assembly 130 includes a diffuser 131, a feed pipe 132, and a jet element 133. One end of the jet element 133 is connected to the feed pipe 132, and the end of the jet element 133 away from the feed pipe 132 is disposed towards the diffuser 131. The diffuser 131 is provided with a plurality of diffusion holes 1311, and a reaction coating is coated on the surface of the diffuser 131. Correspondingly, the feed pipe 132 of the sterilization assembly 130 is used to input reactants such as ozone. The reactants are ejected onto the diffuser 131 through the jet element 133 to form a high-pressure air flow. For example, the jet element 133 can be a jet nozzle to accelerate the ozone to an air flow with a rate of 15-20 m / s. The diffusion holes 1311 of the diffuser 131 are used to increase the contact area. The diffuser 131 is installed within the filtration chamber 112 to facilitate the use of hydraulic conditions. The contact reaction time between the reactants and the diffuser 131 is greater than or equal to 30 s. The reactants react with the reaction coating coated on the diffuser 131 in real time to produce reaction products for sterilizing and purifying the sewage. Additionally, the reactants can also directly disinfect the sewage to ensure sufficient mixing of the sewage and the reactants to guarantee the purification effect.

[0037] Exemplarily, the diffuser 131 is a diffuser plate, and the material of the diffuser plate can be ceramic. Of course, the diffuser plate can also be made of other materials. A plurality of diffusion holes 1311 are arranged in an array structure on the diffuser plate. The feed pipe 132 is connected to a reactant generator and a power pump. The reactants in the reactant storage member are pumped out through the feed pipe 132. The air flow output pressure of the feed pipe 132 is 0.05 MPa to 0.1 MPa, so that the reactants form a high-pressure air flow through the jet member 133. The high-pressure air flow generated by the jet member 133 impacts the diffusion holes 1311 of the diffuser plate, and the high-pressure air flow can be dispersed into microbubbles to increase the contact area of the reactants. The particle size of the micron-sized bubbles is about 50 μm - 200 μm.

[0038] In one embodiment, optionally, referring to Figure 1 As shown, the number of the sedimentation tanks 111 is plural. Along the first direction X, the plural sedimentation tanks 111 are respectively located at opposite ends of the housing 110, so as to facilitate the sedimentation and sludge discharge operations of the independently arranged sedimentation tanks 111. A certain sedimentation tank 111 can be cleaned and maintained separately, and the plural sedimentation tanks 111 will not affect and hinder each other, ensuring that the sewage treatment process of the sewage treatment device 100 can be carried out continuously. Exemplarily, the number of the sedimentation tanks 111 can be two, four, six or eight, and no specific limitation is made here.

[0039] Furthermore, as Figure 2 shown, adjacent two of the sedimentation tanks 111 are separated by a first partition 114. The first partition 114 is detachably connected to the housing 110, that is, the first partition 114 is used to separate adjacent two sedimentation tanks 111, so that the adjacent two sedimentation tanks 111 are independently arranged and sediment and discharge sludge for the sewage. The first partition 114 can be detached, so as to facilitate the connection of the adjacent two sedimentation tanks 111, and perform grid treatment or centralized treatment according to different sewage treatment requirements, improving the flexibility of sewage treatment.

[0040] In one embodiment, optionally, referring to Figure 2As shown, the housing 110 is further provided with a second partition 115. The communication port 113 is located on the second partition 115. The number of the filtration chambers 112 is two. The sedimentation chamber 111 includes a first sedimentation chamber 1113 and a second sedimentation chamber 1114. Both of the two filtration chambers 112 are located between the first sedimentation chamber 1113 and the second sedimentation chamber 1114. One filtration chamber 112 corresponds to multiple first sedimentation chambers 1113 through the second partition 115, and the other filtration chamber 112 corresponds to multiple second sedimentation chambers 1114 through the second partition 115. Accordingly, the second partition 115 is used to separate the filtration chamber 112 and the sedimentation chamber 111. The sedimentation chamber 111 is communicated with the filtration chamber 112 through the communication port 113. Multiple sedimentation chambers 111 located at one end of the housing 110 are all first sedimentation chambers 1113, and multiple sedimentation chambers 111 located at the other end of the housing 110 are all second sedimentation chambers 1114. The two filtration chambers 112 respectively correspond to the first sedimentation chamber 1113 and the second sedimentation chamber 1114, so that the sludge in multiple first sedimentation chambers 1113 can flow into one filtration chamber 112, and the sludge in multiple second sedimentation chambers 1114 can flow into the other filtration chamber 112. The overall structure is relatively compact, reducing the space occupancy rate. Further, the second partition 115 and the first partition 114 are adjacent side surfaces of the sedimentation chamber 111. Exemplarily, the opening height of the communication port 113 is greater than the height of the filter element 120, so that the sewage entering the filtration chamber 112 can be filtered by the filter element 120.

[0041] Optionally, refer to Figure 1 As shown, the number of the first outlets 1112 is two. The two first outlets 1112 respectively correspond to the first sedimentation chamber 1113 and the second sedimentation chamber 1114. In other words, multiple first sedimentation chambers 1113 correspond to one first outlet 1112, so that the sludge in multiple first sedimentation chambers 1113 can be discharged through the first outlet 1112, and multiple second sedimentation chambers 1114 correspond to one first outlet 1112, so that the sludge in multiple second sedimentation chambers 1114 can be discharged through the first outlet 1112.

[0042] Optionally, the two filtration chambers 112 are independently arranged, and the two filtration chambers 112 are parallel to each other. And the two filtration chambers 112 are independently arranged to avoid the situation that the communication between the two filtration chambers 112 causes turbulent flow and affects or hinders. The sewage enters the filtration chamber 112 for filtration to ensure the sewage treatment effect.

[0043] In one embodiment, optionally, as Figure 1As shown, the precipitation tank 111 is provided with a blanking part 116. The end of the blanking part 116 is provided with the first outlet 1112. The cross-sectional area of the blanking part 116 gradually decreases in the direction from the liquid inlet 1111 to the first outlet 1112. The cross-sectional area of the blanking part 116 is the smallest at the position of the first outlet 1112. The tapered cross-sectional area design of the blanking part 116 realizes the accelerated flow of the liquid through Bernoulli's principle, improves the liquid flow rate at the first outlet 1112, avoids the deposition of suspended particles in the sewage in the blanking part 116, and reduces the risk of blockage. Exemplarily, the blanking part 116 can be a conical funnel structure. Additionally, the blanking part 116 can also be a segmented reduced-diameter structure, such as being divided into multiple decreasing regions.

[0044] In one embodiment, optionally, in combination Figure 2 and Figure 3 As shown, the number of the jet parts 133 is multiple. The multiple jet parts 133 are installed at intervals along the second direction Y on the material conveying pipe 132. The second direction Y is perpendicular to the first direction X, that is, the multiple jet parts 133 are arranged at intervals along the width direction of the sewage treatment device 100 on the material conveying pipe 132. The ozone conveyed by the material conveying pipe 132 forms a high-speed air flow and is ejected through the jet parts 133, realizing the full mixing of ozone and water, ensuring that ozone has sufficient contact area, and improving the reaction utilization rate of ozone.

[0045] In one embodiment, optionally, as Figure 2 shown, the filter element 120 is provided with a filter adsorption layer. The filter adsorption layer of the filter element 120 is located above the diffusion part 131. Since there is residual ozone in the filter tank 112, the filter adsorption layer of the filter element 120 is used for the residual ozone, achieving the purpose of treating the residual ozone in the sewage treatment and avoiding leakage into the environment. Exemplarily, the material of the filter adsorption layer is activated carbon or decomposition catalyst, realizing the adsorption and decomposition of the residual ozone.

[0046] The embodiment of the present invention also provides a sewage treatment system. The sewage treatment system includes the sewage treatment device 100 in the above embodiment. The sewage treatment system including the sewage treatment device 100 has all the beneficial effects of the sewage treatment device 100, which will not be elaborated here in detail.

[0047] In all the examples shown and described here, any specific value should be construed as merely exemplary, not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0048] The above-described embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention.

Claims

1. A sewage treatment device, characterized in that, Comprising: A housing, within which a sedimentation chamber and a filtration chamber are defined. At opposite ends of the sedimentation chamber, a liquid inlet and a first outlet are respectively provided. The filtration chamber is connected to the sedimentation chamber through a communication port. At one end of the filtration chamber away from the communication port, a second outlet is provided; A filter element, which is disposed within the filtration chamber; A sterilization assembly, which is disposed within the sedimentation chamber and is disposed opposite to the filter element, and the sterilization assembly is located between the filter element and the second outlet; The sterilization assembly includes a diffuser, a feed pipe, and a jetting member. One end of the jetting member is connected to the feed pipe, and the end of the jetting member away from the feed pipe is disposed towards the diffuser. The diffuser is provided with a plurality of diffusion holes, and a reaction coating is applied on the surface of the diffuser.

2. The sewage treatment device according to claim 1, characterized in that, The number of the sedimentation chambers is plural, and along a first direction, the plural sedimentation chambers are respectively located at opposite ends of the housing.

3. The sewage treatment device according to claim 2, characterized in that, Adjacent two of the sedimentation chambers are separated by a first partition, and the first partition is detachably connected to the housing.

4. The sewage treatment device according to claim 2, characterized in that, The housing is further provided with a second partition, the communication port is located at the second partition, the number of the filtration chambers is two, the sedimentation chambers include a first sedimentation chamber and a second sedimentation chamber, both of the two filtration chambers are located between the first sedimentation chamber and the second sedimentation chamber, one filtration chamber corresponds to a plurality of the first sedimentation chambers through the second partition, and the other filtration chamber corresponds to a plurality of the second sedimentation chambers through the second partition.

5. The sewage treatment device according to claim 4, characterized in that, The number of the first outlets is two, and the two first outlets respectively correspond to the first sedimentation chamber and the second sedimentation chamber.

6. The sewage treatment device according to claim 4, characterized in that, The two filtration chambers are independently provided and are parallel to each other.

7. The sewage treatment device according to any one of claims 1 to 6, characterized in that, The sedimentation chamber is provided with a feeding portion, the end of the feeding portion is provided with the first outlet, and the cross-sectional area of the feeding portion gradually decreases in the direction from the liquid inlet to the first outlet, and the cross-sectional area of the feeding portion is the smallest at the position of the first outlet.

8. The sewage treatment device according to any one of claims 1 to 6, characterized in that, The number of the jetting members is plural, and the plural jetting members are installed on the feed pipe at intervals along a second direction, and the second direction is perpendicular to the first direction.

9. The sewage treatment device according to any one of claims 1 to 6, characterized in that, The filter element is provided with a filter adsorption layer.

10. A sewage treatment system, characterized in that, Including the sewage treatment device according to any one of claims 1 to 9.

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