A sulfur autotrophic denitrification biological filter

Abstract

This utility model relates to a sulfur autotrophic denitrification biological filter, belonging to the field of biological filter technology. It includes a tank, with a water supply component on the left side continuously supplying liquid to the tank, a treatment component inside the tank for water treatment, a drainage pipe fixedly connected to the right side of the tank, and an overflow pipe fixed to the top of the tank, penetrating the top and right side walls and extending to the outside of the tank. A pressure control component on the top of the tank controls the internal air pressure. This sulfur autotrophic denitrification biological filter can quickly remove air from the tank through the pressure control component, ensuring efficient reaction when water to be treated is discharged into the tank, thus improving utilization efficiency. A cleaning section allows for backwashing of the treatment component, cleaning impurities adhering to its surface and ensuring subsequent performance.

Description

Technical Field

[0001] This utility model relates to the field of biological filter technology, specifically a sulfur autotrophic denitrification biological filter. Background Technology

[0002] Sulfur autotrophic denitrification biological filters are a biological treatment technology for deep denitrification of wastewater. In an oxygen-deficient environment, sulfur autotrophic denitrifying bacteria use elemental sulfur or sulfides as electron donors to achieve efficient denitrification.

[0003] For example, Chinese patent (publication number: CN223150381U) discloses a denitrification filter, comprising: a filter body and sulfur autotrophic denitrification packing. The filter body contains a connected mixing zone and a packing zone, which are sequentially distributed along the length or width of the filter body. The mixing zone has an inlet; the packing zone has an outlet. Wastewater to be treated flows in through the inlet and sequentially passes through the mixing zone and the packing zone before exiting the filter body through the outlet. The sulfur autotrophic denitrification packing is located within the packing zone and is used to perform sulfur autotrophic denitrification treatment on the flowing wastewater. When wastewater flows through the sulfur autotrophic denitrification packing, the denitrification of nitrate nitrogen in the wastewater is converted into nitrogen gas through the denitrification action of sulfur autotrophic denitrifying microorganisms, using sulfur or reduced sulfides as electron donors. This achieves high nitrogen removal efficiency, eliminates the need for organic carbon source addition, and results in low operating costs.

[0004] However, the device cannot control the gas pressure. Since the sulfur autotrophic denitrification filter media can only work smoothly in the absence of oxygen, the oxygen content is very important for the reaction. Therefore, a sulfur autotrophic denitrification biological filter is proposed to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a sulfur-autotrophic denitrification biological filter, which has advantages such as effective gas pressure control and solves the problems mentioned in the background.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sulfur autotrophic denitrification biological filter, comprising a tank, a water supply component that continuously supplies liquid to the tank on the left side of the tank, a treatment component that can treat the water on the inner side of the tank, a drainage pipe that is fixedly connected to the right side of the tank, an overflow pipe that penetrates the top wall and the right side wall of the tank and extends to the outside of the tank, and a pressure control component that can control the air pressure inside the tank is provided on the top of the tank;

[0007] The air pressure control assembly includes a reverse cover fixed to the top of the housing, an air pump fixed to the top of the reverse cover, the output end of the air pump penetrating through the top wall of the reverse cover, an air pressure sensor and an oxygen sensor being provided on the inner top wall of the reverse cover, a buffer frame being fixed to the inner top wall of the reverse cover, and the input end of the air pump extending into the buffer frame.

[0008] Furthermore, the water supply assembly includes a support frame fixed to the left side wall of the tank, the inner bottom wall of the support frame is provided with a cleaning section extending into the tank, and the top of the support frame is provided with an input section extending into the tank.

[0009] Furthermore, the cleaning unit includes a primary liquid pump fixed to the inner bottom wall of the support frame. The right side of the primary liquid pump is fixedly connected to a main pipe that penetrates the left side wall of the housing. The other end of the main pipe is fixedly connected to a connecting pipe, and the right side of the connecting pipe is fixedly connected to multiple branch pipes.

[0010] Furthermore, each of the branch pipes is fixedly connected to multiple nozzles at its top, and the other end of each branch pipe is fixed to the right wall of the housing.

[0011] Furthermore, the input section includes a secondary liquid pump fixed to the top of the support frame. A water inlet pipe is fixedly connected to the right side of the secondary liquid pump, penetrating the left side wall of the housing. A filter box is fixed to the top of the support frame and to the left of the secondary liquid pump. A cover plate is fixed to the top of the filter box by bolts. Two stepped holes are opened on the top of the filter box, and a lifting structure is provided in each stepped hole. A filter element is threaded to the inner left wall of the filter box. The right side of the filter box is fixedly connected to the secondary liquid pump, and the left side of the filter box is fixedly connected to the liquid inlet pipe.

[0012] Furthermore, the processing component includes two barrier nets, both of which are fixed to the left and right side walls of the inner cavity of the box. Gauze is attached to the opposite side of the two barrier nets, and sulfur autotrophic denitrification filter media is filled to the opposite side of the two gauze.

[0013] Furthermore, the top of the box is provided with multiple vent holes, and the drainage pipe is equipped with a valve.

[0014] Furthermore, each of the lifting structures includes a support spring fixed to the bottom wall of the stepped hole, a stop plate fixed to the top of each support spring, and a limiting rod movably connected to the inner side wall of the stepped hole fixed to the bottom of each stop plate.

[0015] Compared with the prior art, this utility model provides a sulfur autotrophic denitrification biological filter, which has the following beneficial effects:

[0016] 1. This sulfur-autotrophic denitrification biological filter can quickly remove air from the tank through a pressure control component, ensuring efficient reaction when the water to be treated is discharged into the tank, thus improving its utilization efficiency.

[0017] 2. This sulfur-autotrophic denitrification biological filter can use a cleaning section to backwash the treatment components, thereby cleaning the impurities attached to the surface of the treatment components and ensuring the subsequent use effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a three-dimensional anatomical view of the lifting structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the processing component of this utility model.

[0021] In the diagram: 1. Box body, 2. Water supply assembly, 201. Support frame, 202. Cleaning section, 2021. Primary liquid pump, 2022. Main pipeline, 2023. Connecting pipeline, 2024. Branch pipe, 203. Input section, 2031. Secondary liquid pump, 2032. Inlet pipe, 2033. Filter box, 2034. Cover plate, 2035. Filter element, 2036. Lifting structure, 3. Treatment assembly, 301. Barrier net, 302. Gauze, 303. Sulfur self-trophic denitrification filter media, 4. Drainage pipeline, 5. Overflow pipe, 6. Air pressure control assembly, 601. Inverted cover, 602. Air pump, 603. Air pressure sensor, 604. Oxygen sensor, 605. Buffer frame. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1 to 2 This embodiment of a sulfur autotrophic denitrification biological filter includes a tank 1. A water supply component 2 is provided on the left side of the tank 1 to continuously supply liquid to the tank 1. A treatment component 3 is provided on the inner side of the tank 1 to treat the water. A drainage pipe 4 is fixedly connected to the right side of the tank 1. An overflow pipe 5 is fixedly provided on the top of the tank 1, penetrating the top wall and the right side wall of the tank 1 and extending to the outside of the tank 1. A pressure control component 6 is provided on the top of the tank 1 to control the air pressure inside the tank 1.

[0024] In addition, the water supply assembly 2 includes a support frame 201 fixed to the left side wall of the tank 1. The support frame 201 can provide sufficient support for the cleaning section 202 and the input section 203. The inner bottom wall of the support frame 201 is provided with a cleaning section 202 extending into the tank 1. The cleaning section 202 can clean the processing assembly 3 to ensure that the processing assembly 3 can work stably for a long time. The top of the support frame 201 is provided with an input section 203 extending into the tank 1. The input section 203 is used to supply liquid into the tank 1.

[0025] It should be further explained that the cleaning unit 202 includes a primary liquid pump 2021 fixed to the inner bottom wall of the support frame 201. A water pipe is fixedly connected to the left side of the primary liquid pump 2021, and water is continuously supplied to the primary liquid pump 2021 through the water pipe. A main pipe 2022 penetrating the left side wall of the box 1 is fixedly connected to the right side of the primary liquid pump 2021. The main pipe 2022 and the connecting pipe 2023 both serve to connect, ensuring that the branch pipes 2024 are full of water, so that the water can be sprayed out smoothly with the nozzles. The other end of the main pipe 2022 is fixedly connected to the connecting pipe 2023. Multiple branch pipes 2024 are fixedly connected to the right side of the connecting pipe 2023. Multiple nozzles are fixedly connected to the top of each branch pipe 2024. The other end of each branch pipe 2024 is fixed to the inner right wall of the box 1.

[0026] In addition, the input section 203 includes a secondary liquid pump 2031 fixed to the top of the support frame 201. The secondary liquid pump 2031 provides power for the flow of the liquid to be treated. A water inlet pipe 2032 is fixedly connected to the right side of the secondary liquid pump 2031, penetrating the left side wall of the housing 1. A filter box 2033 is fixed to the top of the support frame 201 and to the left of the secondary liquid pump 2031. The filter box 2033 plays a certain role in water storage and, together with the filter element 2035, performs preliminary filtration of the water. The top of the filter box 2033 is fixed with a cover plate 2034 by bolts. The top of the filter box 2033 has two stepped holes, and each stepped hole is equipped with a lifting structure 2036. When the bolts on the cover plate 2034 are removed, the filter element 2035 is threadedly connected to the inner left wall of the filter box 2033 under the action of the lifting structure 2036. The right side of the filter box 2033 is fixedly connected to the secondary liquid pump 2031, and the left side of the filter box 2033 is fixedly connected to the liquid inlet pipe.

[0027] Understandably, each lifting structure 2036 includes a support spring fixed to the bottom wall of the stepped hole. The support spring is in a compressed state, and under the elastic force of the support spring, it can cause the abutment plate to continuously abut against the cover plate 2034. The abutment force can also increase the connection force of the bolts on the cover plate 2034. The top of each support spring is fixed with an abutment plate, and the bottom of each abutment plate is fixed with a limiting rod that is movably connected to the inner side wall of the stepped hole.

[0028] In this embodiment, the water supply component 2 provides a stable water supply to the tank 1, which not only ensures that the liquid to be treated flows steadily into the tank 1, but also allows for the smooth cleaning of the processing component 3, making it simple and convenient to use.

[0029] Please refer to it again. Figure 1 and Figure 3 To ensure the normal operation of the device, the processing component 3 in this embodiment includes two barrier nets 301. The two barrier nets 301 can ensure that the liquid flows smoothly and provide support for the sulfur autotrophic denitrification filter material 303. Both barrier nets 301 are fixed to the left and right side walls of the inner cavity of the box 1. Gauze 302 is attached to the opposite side of the two barrier nets 301, and the opposite side of the two gauze 302 is filled with sulfur autotrophic denitrification filter material 303. Multiple ventilation holes are opened on the top of the box 1, and a valve is installed on the drainage pipe 4 to control the flow of liquid in or out of the drainage pipe 4.

[0030] In addition, the air pressure control component 6 includes a reverse cover 601 fixed to the top of the housing 1. An air pump 602 is fixed to the top of the reverse cover 601. The air pump 602 can provide power for gas flow. The output end of the air pump 602 passes through the top wall of the reverse cover 601. An air pressure sensor 603 and an oxygen sensor 604 are provided on the inner top wall of the reverse cover 601. An air pressure sensor 603 is also provided on the back of the housing 1. The two air pressure sensors 603 can compare the air pressure inside and outside the housing 1 to further ensure air pressure stability. A buffer frame 605 is fixed to the inner top wall of the reverse cover 601. The input end of the air pump 602 extends into the buffer frame 605.

[0031] In this embodiment, the liquid is processed by the processing component 3 and then discharged through the drainage pipe 4. The air pressure control component 6 can not only discharge the gas smoothly, but also help to ensure the air pressure inside the box 1 is stable.

[0032] It is understandable that the water supply component 2, the treatment component 3 and the air pressure control component 6 work together to ensure that the liquid in the tank 1 is processed smoothly and effectively.

[0033] All electrical components mentioned in this article are electrically connected to the controller and power supply. The control method of this utility model is controlled by the controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, this utility model is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail.

[0034] The working principle of the above embodiments is as follows:

[0035] In operation, the water to be treated is first pumped into the filter box 2033 by the secondary liquid pump 2031. Then, the liquid is initially filtered by the filter element 2035 to intercept large particulate impurities. The secondary liquid pump 2031 then pumps the liquid into the tank 1, where it is treated by the sulfur autotrophic denitrification filter media 303 on the treatment component 3. Finally, the water is discharged through the drain pipe 4. While the treatment component 3 is treating the liquid in the tank 1, the pressure sensor 603 and the oxygen sensor 604 detect the pressure and oxygen content in the tank 1 to further improve the stability of the liquid treatment by the treatment component 3.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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 such a 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.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A sulphur autotrophic denitrification biofilter comprising a tank (1), characterised in that: The left side of the box (1) is provided with a water supply component (2) that continuously provides liquid to the box (1). The inside of the box (1) is provided with a treatment component (3) that can treat water. The right side of the box (1) is fixedly connected with a drain pipe (4). The top of the box (1) is fixed with an overflow pipe (5) that penetrates the top wall of the box (1) and the right side wall of the box (1) and extends to the outside of the box (1). The top of the box (1) is provided with a pressure control component (6) that can control the air pressure inside the box (1). The air pressure control assembly (6) includes a reverse cover (601) fixed to the top of the housing (1), an air pump (602) fixed to the top of the reverse cover (601), the output end of the air pump (602) penetrating the top wall of the reverse cover (601), an air pressure sensor (603) and an oxygen sensor (604) provided on the inner top wall of the reverse cover (601), a buffer frame (605) fixed on the inner top wall of the reverse cover (601), and the input end of the air pump (602) extending into the buffer frame (605).

2. The sulfur autotrophic denitrification biofilter according to claim 1, characterized in that: The water supply assembly (2) includes a support frame (201) fixed to the left side wall of the tank (1), the inner bottom wall of the support frame (201) is provided with a cleaning part (202) extending into the tank (1), and the top of the support frame (201) is provided with an input part (203) extending into the tank (1).

3. The sulfur autotrophic denitrification biological filter according to claim 2, characterized in that: The cleaning unit (202) includes a primary liquid pump (2021) fixed to the inner bottom wall of the support frame (201). The right side of the primary liquid pump (2021) is fixedly connected to a main pipe (2022) that penetrates the left side wall of the box (1). The other end of the main pipe (2022) is fixedly connected to a connecting pipe (2023). The right side of the connecting pipe (2023) is fixedly connected to multiple branch pipes (2024).

4. The sulfur autotrophic denitrification biofilter according to claim 3, characterized in that: Each of the branch pipes (2024) has multiple nozzles fixedly connected to its top, and the other end of each of the branch pipes (2024) is fixed to the right wall of the inner wall of the housing (1).

5. The sulfur autotrophic denitrification biofilter according to claim 2, characterized in that: The input section (203) includes a secondary liquid pump (2031) fixed to the top of the support frame (201). The right side of the secondary liquid pump (2031) is fixedly connected to an inlet pipe (2032) that penetrates the left side wall of the housing (1). A filter box (2033) is fixedly located on the top of the support frame (201) and to the left of the secondary liquid pump (2031). A cover plate (2034) is fixedly attached to the top of the filter box (2033) by bolts. Two stepped holes are opened on the top of the filter box (2033). Each stepped hole is provided with a lifting structure (2036). A filter element (2035) is threadedly connected to the inner left wall of the filter box (2033). The right side of the filter box (2033) is fixedly connected to the secondary liquid pump (2031), and the left side of the filter box (2033) is fixedly connected to an inlet pipe.

6. The sulfur autotrophic denitrification biofilter according to claim 1, characterized in that: The processing component (3) includes two barrier nets (301), both of which are fixed to the left and right side walls of the inner cavity of the box (1). Gauze (302) is attached to the opposite side of the two barrier nets (301), and sulfur autotrophic denitrification filter media (303) is filled to the opposite side of the two gauze (302).

7. The sulfur autotrophic denitrification biofilter according to claim 1, characterized in that: The top of the box (1) is provided with multiple ventilation holes, and the drainage pipe (4) is provided with a valve.

8. The sulfur autotrophic denitrification biofilter according to claim 5, characterized in that: Each of the lifting structures (2036) includes a support spring fixed to the bottom wall of the stepped hole, a stop plate fixed to the top of each support spring, and a limiting rod movably connected to the inner side wall of the stepped hole fixed to the bottom of each stop plate.

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