Biological membrane rapid denitrification integrated equipment

Abstract

The utility model discloses biological membrane rapid denitrification integrated equipment, which solves the problems of large occupied area and inconvenience in installation of biological membrane denitrification equipment in the prior art, and comprises a biological membrane rapid denitrification unit or at least two biological membrane rapid denitrification units which are connected in series, the biological membrane rapid denitrification unit comprises an integrated steel structure box body and at least two aerobic tanks which are arranged in the box body and are connected in series along the water flow direction; a filler is arranged in the aerobic tank, a microporous aeration pipe is laid at the bottom of the aerobic tank, and the microporous aeration pipe is connected with an aeration branch pipe; wherein the water inlet end of the box body on the water inlet side is connected with a water inlet pipe, the water outlet end of the box body on the water outlet side is provided with a water outlet groove and an equipment area, the water outlet groove is connected with the water outlet pipe, the equipment area is internally provided with aeration equipment, the aeration equipment is connected with an aeration main pipe, and the aeration main pipe is connected with an aeration branch pipe.

Description

An integrated rapid denitrification device for biofilm Technical Field

[0001] This utility model belongs to the field of water treatment technology, specifically relating to a denitrification device. Background Technology

[0002] Eutrophication is a water pollution phenomenon caused by the excessive discharge of nutrients such as nitrogen and phosphorus into water bodies. Eutrophication is mainly due to the discharge of exogenous nutrients, with nitrogen being one of the main contributing factors. Therefore, controlling nitrogen-containing pollutants is crucial for the remediation of eutrophication.

[0003] Currently, biofilm technology is the most widely used river water treatment process. Biofilm denitrification equipment usually requires one or more aerobic tanks and needs to be constructed on-site, which results in a large footprint and inconvenient installation. Summary of the Invention [Summary of the Utility Model]

[0004] To address the shortcomings of existing technologies, the present invention aims to provide an integrated rapid denitrification device for biofilm, thereby solving the problems of large footprint and inconvenient installation of existing biofilm denitrification devices.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] An integrated rapid denitrification device for biofilm includes one rapid denitrification unit or at least two rapid denitrification units connected in series. Each rapid denitrification unit comprises an integrated steel structure housing and at least two aerobic tanks connected in series along the water flow direction within the housing. The aerobic tanks contain packing material, and microporous aeration pipes are laid at the bottom of the aerobic tanks, connected to aeration branch pipes. The housing on the inlet side is connected to an inlet pipe at the inlet end, which is connected to the first aerobic tank upstream. The housing on the outlet side is equipped with an outlet trough and an equipment area at the outlet end. The outlet trough is connected to the last aerobic tank downstream, and is connected to an outlet pipe. The equipment area contains aeration equipment connected to a main aeration pipe, which is connected to an aeration branch pipe.

[0007] Preferably, the container is a shipping container.

[0008] Preferably, the tank on the water outlet side is provided with a door at the water outlet end.

[0009] Preferably, the enclosure is equipped with a hoisting structure.

[0010] Preferably, the aerobic tank includes a fixed frame and baffles installed on the fixed frame, wherein the fixed frame is a frame structure welded from stainless steel profiles.

[0011] Preferably, the bottom of the box is provided with a bottom support, and the fixed frame of the aerobic tank is fixed to the bottom support by bolts.

[0012] Preferably, the biofilm rapid denitrification unit is equipped with an online detection instrument.

[0013] Preferably, the equipment area is equipped with a remote control device.

[0014] Preferably, each aerobic tank is equipped with an interception net on the effluent side.

[0015] Preferably, the packing material is suspended in the aerobic tank and moves with the water.

[0016] The present invention adopts the above technical solution and has the following beneficial effects:

[0017] This invention provides an integrated rapid denitrification device for biofilm, comprising one rapid denitrification unit or at least two rapid denitrification units connected in series. Each rapid denitrification unit includes an integrated steel structure housing and at least two aerobic tanks connected in series along the water flow direction within the housing. The housing on the effluent side has an equipment area at the effluent end, which houses aeration equipment and other electrical equipment, monitoring instruments, remote control devices, etc. Because the aerobic tanks, aeration equipment, and related equipment are integrated into the integrated steel structure housing, installation is simple: the integrated steel structure housing is transported to the site, hoisted into place, and the inlet and outlet water connections are connected. The equipment has a high degree of integration and a small footprint (the actual 5000-ton capacity unit occupies only 65m²). 2 It features low height (not subject to height restrictions), convenient installation, low requirements for installation site (only equipment foundation is needed, no need to consider overturning issues, etc.), and short construction period, solving the problems of large footprint and inconvenient installation of existing biofilm denitrification equipment.

[0018] Packing material is placed in the aerobic tank, and microporous aeration pipes are laid at the bottom of the tank to aerate and oxygenate the sewage. The sewage in the tank is in a state of agitation, and the packing material is in a state of up and down rolling in the tank to ensure that the sewage and packing material are in full contact. This avoids the defects of uneven contact between sewage and packing material, improves oxygen transfer efficiency by more than 30%, and biofilm-sewage contact efficiency by more than 50%, greatly reducing aeration energy consumption.

[0019] In addition, it can be equipped with various online detection instruments and remote control devices to achieve fully automatic operation and operation data feedback under unattended conditions.

[0020] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. Figure Description

[0021] The utility model will be further described below with reference to the accompanying drawings:

[0022] Figure 1 is a schematic plan view of the bottom structure of an integrated rapid denitrification device for biofilm according to this utility model;

[0023] Figure 2 is a cross-sectional view of AA in Figure 1;

[0024] Figure 3 is a cross-sectional view of BB in Figure 1;

[0025] Figure 4 is a cross-sectional view of CC in Figure 1;

[0026] Figure 5 is a cross-sectional view of DD in Figure 1;

[0027] Figure 6 shows the plan layout of the aeration pipes;

[0028] Attached reference numerals: 1. Box body, 11. Aerobic tank, 111. Microporous aeration pipe, 112. Aeration branch pipe, 113. Interception net, 12. Water outlet trough, 13. Equipment area, 14. Aeration equipment, 15. Main aeration pipe, 16. Electrical control equipment, 17. Connecting water pipe, 18. Aeration connecting pipe. Detailed Implementation Methods

[0029] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0030] Those skilled in the art will understand that, without conflict, the features in the following embodiments and implementations can be combined with each other.

[0031] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as "inner," "outer," "front," and "rear," which indicate orientation or positional relationship, are based solely on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device / component referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] Furthermore, in this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0035] Referring to Figures 1 to 6, this embodiment provides an integrated biofilm rapid denitrification device, including one biofilm rapid denitrification unit or at least two biofilm rapid denitrification units connected in series. The biofilm rapid denitrification unit includes an integrated steel structure box 1 and at least two aerobic tanks 11 connected in series along the water flow direction inside the box. The aerobic tank 11 is filled with packing material, and a microporous aeration pipe 111 is laid at the bottom of the aerobic tank. The microporous aeration pipe 111 is connected to an aeration branch pipe 112. The box on the inlet side is connected to an inlet pipe at the inlet end, and the inlet pipe is connected to the first aerobic tank upstream. The box on the outlet side is provided with an outlet trough 12 and an equipment area 13 at the outlet end. The outlet trough 12 is connected to the last aerobic tank downstream, and the outlet trough 12 is connected to an outlet pipe. The equipment area 13 is provided with an aeration device 14, an electrical control device 16, etc. The aeration device 14 is connected to the aeration main pipe 15, and the aeration main pipe 15 is connected to the aeration branch pipe 112.

[0036] When multiple biofilm rapid denitrification units are connected in series, they share a single aeration system. The aeration main pipes are segmented, with each biofilm rapid denitrification unit having its own set of aeration main pipes. An aeration connecting pipe 18 is installed between the aeration main pipes of two connected biofilm rapid denitrification units. Similarly, a connecting water pipe 17 is installed between the aerobic tanks of two connected biofilm rapid denitrification units.

[0037] In this embodiment, the container 1 is a shipping container, which facilitates standardization and market procurement to accelerate production and reduce costs, while also simplifying transportation and hoisting. For example, the dimensions of the container 1 are L×W×H=18×2.5×2.5m. The container 1 is equipped with a hoisting structure, which can be the same as that of a shipping container. In addition, the container on the water outlet side has a door at the water outlet end to facilitate the installation and maintenance of equipment within the equipment area.

[0038] Specifically, the aerobic tank 11 includes a fixed frame and baffles installed on the fixed frame. The fixed frame is a frame structure welded from stainless steel profiles, and the baffles are then fixed to the bottom and sides of the frame structure by welding or bolts. Additionally, a bottom support is provided at the bottom of the tank, and the fixed frame of the aerobic tank is bolted to the bottom support. This facilitates quick installation of the aerobic tank inside the tank.

[0039] In addition, the biofilm rapid denitrification unit is equipped with online monitoring instruments. A remote control device is also installed within the equipment area. This allows for the integration of various online monitoring instruments and remote control devices, enabling fully automated operation without human intervention and providing operational data feedback. Existing technologies can be used for the online monitoring instruments and remote control devices. An interception net 113 is installed on the effluent side of each aerobic tank. The packing material is suspended within the aerobic tank and moves with the water.

[0040] Because the aerobic tank, aeration equipment, and related equipment are integrated into a single steel structure enclosure, installation is simple: just transport the enclosure to the site, hoist it into place, and connect the inlet and outlet water connections. The equipment boasts high integration and a small footprint (in actual use, the 5000-ton capacity unit occupies only 65m²). 2 It features low height (not subject to height restrictions), convenient installation, low requirements for installation site (only equipment foundation is needed, no need to consider overturning issues, etc.), and short construction period, solving the problems of large footprint and inconvenient installation of existing biofilm denitrification equipment.

[0041] Packing material is placed in the aerobic tank, and microporous aeration pipes are laid at the bottom of the tank to aerate and oxygenate the sewage. The sewage in the tank is in a state of agitation, and the packing material is in a state of up and down rolling in the tank to ensure that the sewage and packing material are in full contact. This avoids the defects of uneven contact between sewage and packing material, improves oxygen transfer efficiency by more than 30%, and biofilm-sewage contact efficiency by more than 50%, greatly reducing aeration energy consumption.

[0042] The above description is merely a specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of the utility model will be included within the scope of the claims.

Claims

1. An integrated rapid denitrification device for biofilms, characterized in that: The device includes one or more rapid biofilm denitrification units, or at least two such units connected in series. Each rapid biofilm denitrification unit comprises an integrated steel structure housing and at least two aerobic tanks connected in series along the water flow direction within the housing. The aerobic tanks contain packing material, and microporous aeration pipes are laid at the bottom of the aerobic tanks, connected to aeration branch pipes. The housing on the inlet side is connected to an inlet pipe that connects to the first upstream aerobic tank. The housing on the outlet side has an outlet trough and an equipment area at the outlet end. The outlet trough connects to the last downstream aerobic tank and is connected to an outlet pipe. The equipment area contains aeration equipment connected to a main aeration pipe, which in turn connects to aeration branch pipes.

2. The integrated device for rapid denitrification of biofilm according to claim 1, characterized in that: The container is a shipping container.

3. The integrated device for rapid denitrification of biofilm according to claim 1, characterized in that: The tank on the water outlet side is equipped with a door at the water outlet end.

4. The integrated device for rapid denitrification of biofilm according to claim 1, characterized in that: The enclosure is equipped with a hoisting structure.

5. The integrated rapid denitrification device for biofilms according to claim 1, characterized in that: The aerobic tank includes a fixed frame and baffles installed on the fixed frame. The fixed frame is a frame structure welded from stainless steel profiles.

6. The integrated device for rapid denitrification of biofilm according to claim 5, characterized in that: The bottom of the box is provided with a bottom support, and the fixed frame of the aerobic tank is fixed to the bottom support with bolts.

7. The integrated rapid denitrification device for biofilms according to claim 1, characterized in that: The rapid denitrification unit of the biofilm is equipped with online detection instruments.

8. The integrated device for rapid denitrification of biofilm according to claim 1, characterized in that: The equipment area is equipped with a remote control device.

9. The integrated device for rapid denitrification of biofilm according to claim 1, characterized in that: Each aerobic tank is equipped with an interception net on the effluent side.

10. The integrated device for rapid denitrification of biofilm according to claim 1, characterized in that: The packing material is suspended in the aerobic tank and moves with the water.

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