Autotrophic-heterotrophic synergistic denitrification filter

Abstract

This utility model discloses an autotrophic-heterotrophic synergistic denitrification filter, relating to the field of denitrification and denitrification technology. It includes land with a cement square well excavated downwards within the land. A pool cover is fitted onto the top surface of the cement square well, with a vertical air outlet at one corner of the top surface of the pool cover. The cement square well and the pool cover are connected and fixed together by bolts. A filter mechanism is installed inside the cement square well, comprising a water collection component, a water and air distribution structure, and a filtration component. This utility model, through the coordination of the water collection component, the water and air distribution structure, and the filtration component, facilitates the coordinated completion of different tasks, rationally allocates water and air resources, and filters denitrification and denitrification wastewater, improving practicality and realizing the capability of autotrophic-heterotrophic synergistic denitrification and denitrification filtration. Furthermore, by filling the device with nitrogen through the water and air distribution structure, it prevents the wastewater from absorbing oxygen molecules and affecting the denitrification process, ultimately solving the problem of low sealing and insufficient anaerobic environment in existing facilities.

Description

Technical Field

[0001] This utility model relates to the field of denitrification technology, and in particular to an autotrophic-heterotrophic synergistic denitrification filter. Background Technology

[0002] Autotrophic-heterotrophic synergistic denitrification filter is a wastewater denitrification technology that combines the combined action of autotrophic and heterotrophic microorganisms, primarily used to remove nitrates and nitrites from wastewater. Its core principle is that the synergistic action of these two types of microorganisms ultimately converts nitrogenous pollutants into nitrogen gas, achieving highly efficient denitrification. Existing equipment typically only performs simple sealing of the filter, which, due to the presence of a large amount of air on the liquid surface, reduces the anaerobic reaction to some extent, allowing the denitrifying bacteria to absorb oxygen molecules and undergo oxidation reactions, producing pollutants. Therefore, this invention addresses these problems by improving existing equipment. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing an autotrophic-heterotrophic synergistic denitrification filter.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: an autotrophic-heterotrophic synergistic denitrification filter, comprising land, a cement square well excavated downwards inside the land, a pool cover mounted on the top surface of the cement square well, an air outlet vertically connected to one corner of the top surface of the pool cover, the cement square well and the pool cover being fixed together by fixing bolts, a filter mechanism being mounted inside the cement square well, the filter mechanism including a water collection component, a water and air distribution structure and a filtration component.

[0005] Preferably, the water collection assembly includes a cement filter tank, which is a square box structure with an open top. Backwash water troughs are symmetrically fixed to the left and right sides of the cement filter tank, and a cement water collection tank is fixed to the back of the cement filter tank. The back of the backwash water trough is connected to the cement water collection tank.

[0006] Preferably, the cement water collection tank has an opening on the top surface and a cement partition is horizontally fixed in the middle. The upper part of the cement partition is a still water zone, and the lower part of the cement partition is a backwash water zone. An inlet pipe is provided on one side of the still water zone, and a first outlet pipe is connected to one side of the backwash water zone. Both the inlet pipe and the first outlet pipe horizontally penetrate the cement square well and extend upwards to the top surface of the land.

[0007] Preferably, the water and air distribution structure includes a water inlet, which is a slot opened in the middle of the front face of the still water zone. A gate is vertically inserted inside the water inlet, and a slot is opened on the gate to match the water inlet. A cylinder extension end is fixedly connected to the upper end of the front face of the gate, and the lower end of the cylinder is fixedly connected to the top of the water inlet.

[0008] Preferably, a water outlet ditch is connected to one side of the bottom surface of the cement filter tank, and a second water outlet pipe is connected to the middle of the front end face of the water outlet ditch. The second water outlet pipe horizontally penetrates the cement square well and extends upward to the top surface of the land.

[0009] Preferably, the bottom surface of the cement filter tank is paved with multiple support plates. The support plates are kept at a certain height from the bottom surface of the cement filter tank by support columns. The support plates are directly sealed with sealant. Multiple filter nozzles are evenly installed and fixed on the support plates. Branch pipes are installed and fixed in the gaps between the filter nozzles. Multiple air jets are vertically connected to the upper side of the outer side of the branch pipes. The rear end of each branch pipe is connected to an air inlet pipe. The top end of the air inlet pipe passes through the cement square well and extends upward to the top surface of the soil.

[0010] Preferably, the filter assembly includes a bottom pebble layer, which is evenly laid on the top surface of the frame plate, and a microbial adhesion layer is laid on the top surface of the bottom pebble layer, with the water to be filtered above the microbial adhesion layer.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model, through the cooperation of water collection components, water and gas distribution structures and filtration components, facilitates the coordinated completion of different work contents, rationally allocates water and gas resources and denitrification wastewater, improves practicality, and realizes the ability of autotrophic and heterotrophic synergistic denitrification filtration; furthermore, by filling the device with nitrogen through the water and gas distribution structure, it avoids the wastewater absorbing oxygen molecules and affecting the denitrification work, and finally solves the problem of low sealing and insufficient anaerobic environment in existing facilities. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0013] Figure 1 This is a three-dimensional schematic diagram of the overall appearance of the device proposed in this utility model;

[0014] Figure 2 This is a three-dimensional schematic diagram of the filter mechanism proposed in this utility model;

[0015] Figure 3 This is a three-dimensional schematic diagram of the water collection component structure proposed in this utility model;

[0016] Figure 4 The present utility model proposes Figure 2 3D schematic diagram of part A in the middle;

[0017] Figure 5 Here is a three-dimensional schematic diagram of the water outlet channel structure proposed in this utility model:

[0018] Figure 6 Here is a three-dimensional schematic diagram of the water and air distribution structure proposed in this utility model:

[0019] Figure 7 The present utility model proposes Figure 6 3D diagram of part B:

[0020] Figure 8 This is a three-dimensional schematic diagram of the filter assembly structure proposed in this utility model.

[0021] Numbered in the diagram: 1. Land; 2. Cement square well; 3. Pool cover; 4. Air outlet; 5. Fixing bolt; 6. Cement filter; 7. Backwash water trough; 8. Cement water collection tank; 9. Cement partition; 10. Inlet pipe; 11. First outlet pipe; 12. Water outlet; 13. Gate; 14. Cylinder; 15. Outlet ditch; 16. Second outlet pipe; 17. Support plate; 18. Filter nozzle; 19. Branch pipe; 20. Air jet; 21. Air inlet pipe; 22. Bottom pebble layer; 23. Bacterial adhesion layer; 24. Water to be filtered. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example: See Figures 1 to 8 The autotrophic-heterotrophic synergistic denitrification filter of this utility model includes a land 1, a cement square well 2 excavated downward inside the land 1, a pool cover 3 mounted on the top surface of the cement square well 2, and an air outlet 4 vertically connected to one corner of the top surface of the pool cover 3. The cement square well 2 and the pool cover 3 are connected and fixed together by fixing bolts 5. A filter mechanism is installed inside the cement square well 2. The filter mechanism includes a water collection component, a water distribution and air distribution structure and a filtration component. The modular design facilitates quick maintenance of worn parts or the addition of functional components, thus improving practicality.

[0024] In this utility model, to solve the problem of low sealing performance and insufficient anaerobic environment in existing facilities, the following technical solution is adopted: The water collection component includes a cement filter tank 6, which is a square box structure with an open top. Backwash water troughs 7 are symmetrically fixed to the left and right sides of the cement filter tank 6, and a cement water collection tank 8 is fixed to the back of the cement filter tank 6. The back of the backwash water troughs 7 is connected to the cement water collection tank 8, collecting overflowing backwash water through the backwash water troughs 7 and storing it through the cement water collection tank 8. The top surface of the cement water collection tank 8 is open, and a cement partition 9 is horizontally fixed to the middle. The upper end of the cement partition 9 is a still water zone, and the lower end of the cement partition 9 is a backwash water zone. A [further details about the still water zone are missing]. There is an inlet pipe 10, and a first outlet pipe 11 connected to one side of the backwash zone. Both the inlet pipe 10 and the first outlet pipe 11 horizontally penetrate the cement square well 2 and extend upwards to the top surface of the soil 1. The water and air distribution structure includes a water inlet 12, which is a slot opened in the middle of the front face of the still water zone. A gate 13 is vertically inserted inside the water inlet 12. The gate 13 has a slot that matches the water inlet 12. The upper end of the front face of the gate 13 is fixedly connected to the telescopic end of a cylinder 14. The lower end of the cylinder 14 is fixedly connected above the water inlet 12. The gate 13 is raised by lowering the cylinder 14, so that the slot of the gate 13 aligns with the water inlet 12, thereby stabilizing the sediment in the still water zone. The water is distributed into the filter tank. A effluent channel 15 is connected to one side of the bottom surface of the cement filter tank 6. A second effluent pipe 16 is connected to the middle of the front end of the effluent channel 15. The second effluent pipe 16 horizontally penetrates the cement square well 2 and extends upwards to the top surface of the soil 1. Multiple support plates 17 are laid on the bottom surface of the cement filter tank 6. The support plates 17 are maintained at a certain height with the bottom surface of the cement filter tank 6 by support columns. The support plates 17 are directly sealed with sealant. Multiple filter nozzles 18 are evenly installed and fixed on the support plates 17. Branch pipes 19 are installed and fixed in the gaps between the filter nozzles 18. Multiple air jets 20 are vertically connected to the upper outer side of the branch pipes 19. The rear end of the branch pipes 19... All are connected to the air inlet pipe 21. The top of the air inlet pipe 21 passes through the cement square well 2 and extends upward to the top surface of the soil 1. Water is supplied to the second water outlet pipe 16 in conjunction with the air jet 20. After the air jet disperses the filter components, the aging bacteria and debris are washed away by backwashing. The filter components include a bottom pebble layer 22, which is evenly laid on the top surface of the frame plate 17. A bacterial attachment layer 23 is laid on the top surface of the bottom pebble layer 22. The water to be filtered 24 is above the bacterial attachment layer 23. The water to be filtered 24 denitrifies through the bacterial attachment layer 23, then passes through the bottom pebble layer 22 to block sludge, and finally enters the water outlet ditch 15 to become clean water.

[0025] Working principle: When using this utility model, first, power is supplied to all the equipment. Then, the air outlet 4, the air inlet pipe 21, and the air supply equipment are connected. Then, the water inlet pipe 10 and the water supply equipment are connected. Finally, the first water outlet pipe 11, the second water outlet pipe 16, and the water supply equipment are connected to start working. First, wastewater is introduced into the still water zone on the cement collection tank 8 through the water inlet pipe 10. After settling, the cylinder 14 is activated to lower the gate 13, aligning the opening of the gate 13 with the water outlet 12, thereby introducing the upper layer of water in the still water zone into the cement filter tank 6, which becomes the water to be filtered 24. First, the organic matter in the water to be filtered 24 reacts with the bacterial adhesion layer 23 to generate nitrogen and sludge and other impurities. Then, the impurities are blocked by the bottom pebble layer 22. After filtration, the final product passes through the filter nozzle 18 on the shelf 17 and enters the effluent trench 15, then is extracted through the second effluent pipe 16. During filtration, the air supply component ensures that the device is filled with a high concentration of nitrogen by introducing nitrogen into the air inlet pipe 21 and recovering nitrogen through the air outlet 4, thus ensuring an anaerobic environment. After the filtration is completed, the filter tank needs to be cleaned to rinse the filter components and aging bacteria. At this time, clean water is introduced into the second effluent pipe 16 and air is introduced into the air inlet pipe 21. First, a high-speed airflow is used to flush out the gaps, and then water is used to carry away impurities and bacteria. When the water overflows, the backwash water enters the backwash water tank 7 and finally enters the backwash water area at the bottom of the cement collection tank 8. Finally, it is extracted and recycled through the first effluent pipe 11.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An autotrophic-heterotrophic synergistic denitrification filter, comprising land (1), wherein a cement square well (2) is excavated downward inside the land (1), a pool cover (3) is fitted on the top surface of the cement square well (2), and an air outlet (4) is vertically connected to one corner of the top surface of the pool cover (3), and the cement square well (2) and the pool cover (3) are connected and fixed together by fixing bolts (5), characterized in that: The cement square well (2) is equipped with a filter pool mechanism inside, which includes a water collection component, a water and air distribution structure and a filter component.

2. The autotrophic-heterotrophic synergistic denitrification filter according to claim 1, characterized in that: The water collection assembly includes a cement filter tank (6), which is a square box structure with an open top. Backwash water tanks (7) are symmetrically fixed to the left and right sides of the cement filter tank (6), and a cement water collection tank (8) is fixed to the back of the cement filter tank (6). The back of the backwash water tank (7) is connected to the cement water collection tank (8).

3. The autotrophic-heterotrophic synergistic denitrification filter according to claim 2, characterized in that: The cement water collection tank (8) has an opening on the top surface and a cement partition (9) is horizontally fixed in the middle. The upper end of the cement partition (9) is a still water zone, and the lower end of the cement partition (9) is a backwash water zone. A water inlet pipe (10) is provided on one side of the still water zone, and a first water outlet pipe (11) is connected to one side of the backwash water zone. Both the water inlet pipe (10) and the first water outlet pipe (11) horizontally penetrate the cement square well (2) and extend upward to the top surface of the land (1).

4. The autotrophic-heterotrophic synergistic denitrification filter according to claim 1, characterized in that: The water and air distribution structure includes a water inlet (12), which is a slot opened in the middle of the front face of the still water zone. A gate plate (13) is vertically inserted inside the water inlet (12). The gate plate (13) has a slot opened on it to match the water inlet (12). The upper end of the front face of the gate plate (13) is fixedly connected to the telescopic end of a cylinder (14), and the lower end of the cylinder (14) is fixedly connected above the water inlet (12).

5. The autotrophic-heterotrophic synergistic denitrification filter according to claim 2, characterized in that: The bottom side of the cement filter pool (6) is connected to a water outlet ditch (15), and the middle of the front end face of the water outlet ditch (15) is connected to a second water outlet pipe (16). The second water outlet pipe (16) extends horizontally through the cement square well (2) and then extends upward to the top surface of the soil (1).

6. The autotrophic-heterotrophic synergistic denitrification filter according to claim 5, characterized in that: The bottom surface of the cement filter tank (6) is covered with multiple support plates (17). The support plates (17) are supported by columns to maintain a certain height with the bottom surface of the cement filter tank (6). The support plates (17) are directly sealed with sealant. Multiple filter nozzles (18) are evenly installed and fixed on the support plates (17). Branch pipes (19) are installed and fixed in the gaps between the filter nozzles (18). Multiple air jets (20) are vertically connected to the upper side of the outer side of the branch pipes (19). The rear end of each branch pipe (19) is connected to an air inlet pipe (21). The top end of the air inlet pipe (21) penetrates the cement square well (2) and extends upward to the top surface of the soil (1).

7. The autotrophic-heterotrophic synergistic denitrification filter according to claim 1, characterized in that: The filter assembly includes a bottom pebble layer (22), which is evenly laid on the top surface of the frame plate (17). A microbial attachment layer (23) is laid on the top surface of the bottom pebble layer (22), and the water to be filtered (24) is above the microbial attachment layer (23).

Images