Device for removing total nitrogen in wastewater

Abstract

The utility model belongs to the field of wastewater treatment, and discloses a device for removing total nitrogen in wastewater, which comprises a pretreatment tank, a filter component for filtering treatment is arranged in the pretreatment tank, and the right side surface of the pretreatment tank is connected with an electric catalytic oxidation component through a first connecting pipe; the electrical catalytic oxidation assembly is connected with a biological denitrification assembly through a second connecting pipe. The filter assembly comprises two filter plates, and the bottom surfaces of the filter plates are in contact with the bottom of the inner wall of the pretreatment tank. According to the device, large-particle impurities in wastewater can be intercepted through the arranged filtering assembly, the subsequent wastewater treatment work is prevented from being influenced, and particularly, through the arranged second rubber connecting body, hollow pipe, limiting block, spring, connecting column and connecting rod, the large-particle impurities in the wastewater can be blocked in the process that the wastewater impacts the filtering plate; self-vibration of the filter plate is realized, and blockage is avoided.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment, and in particular to a device for removing total nitrogen from wastewater. Background Technology

[0002] Against the backdrop of rapid modern industrial development and accelerated urbanization, the total amount of wastewater discharged is constantly increasing, with total nitrogen pollution becoming increasingly serious, posing a severe threat to the environment and human health.

[0003] In existing equipment, wastewater denitrification treatment requires filtration, but the screens in existing filtration devices are prone to clogging, which can affect subsequent treatment processes.

[0004] To address this issue, we propose a device for removing total nitrogen from wastewater. Utility Model Content

[0005] This utility model discloses a device for removing total nitrogen from wastewater, which is used to solve related technical problems in the background art.

[0006] The technical solution provided by this utility model is as follows: A device for removing total nitrogen from wastewater includes: a pretreatment tank, wherein a filter assembly for filtration is provided inside the pretreatment tank, and an electrocatalytic oxidation assembly is connected to the right side of the pretreatment tank through a first connecting pipe, and the electrocatalytic oxidation assembly is connected to a biological denitrification assembly through a second connecting pipe.

[0007] Preferably, the filtration assembly includes two filter plates. The bottom surface of each filter plate is in contact with the bottom of the inner wall of the pretreatment tank. The two filter plates are fixedly connected by a first rubber connector. The bottom surface of the second rubber connector is fixedly installed with the bottom of the inner wall of the pretreatment tank. A second rubber connector is fixedly installed on one side of each filter plate. The bottom surface of the second rubber connector is in contact with the bottom of the inner wall of the pretreatment tank. A hollow tube is fixedly installed on one side of the second rubber connector. The bottom end and outer wall of the hollow tube are fixedly installed with the inner wall of the pretreatment tank.

[0008] Preferably, the filter assembly further includes a connecting rod, which is fixedly installed with the filter plate. A connecting column is fixedly installed on the bottom surface of the connecting rod. The end of the connecting column away from the connecting rod is located inside the hollow tube. A limiting block is fixedly installed at the bottom end of the connecting column. The limiting block is slidably disposed with an annular groove opened in the inner wall of the hollow tube. A spring is fixedly installed on the top surface of the limiting block. The spring is sleeved on the outside of the connecting column, and the top end of the spring is fixedly installed with the top of the inner wall of the annular groove.

[0009] Preferably, the edge of the limiting block is spaced apart from the inner wall of the annular groove. This arrangement allows the limiting block to have a range of movement, which can improve the vibration effect under the impact of wastewater.

[0010] Preferably, the electrocatalytic oxidation assembly includes an electrolytic cell, the left side of which is connected to the right end of the first connecting pipe, and an anode plate and a cathode plate are fixedly installed on the inner wall of the electrolytic cell.

[0011] Preferably, an ion exchange membrane is disposed between the anode plate and the cathode plate. The ion exchange membrane is fixedly installed on the inner wall of the electrolytic cell. The ion exchange membrane can separate the anode plate and the cathode plate, prevent the products of the two electrodes from interfering with each other, and promote the directional migration of ions, thereby improving the electrolysis efficiency.

[0012] Preferably, the biological denitrification component includes a denitrification reaction tank, the left side of which is connected to the right end of a second connecting pipe, and the left end of the second connecting pipe is connected to the right side of an electrolytic cell. The inner wall of the denitrification reaction tank is provided with an anaerobic tank and an aerobic tank through a partition. The side of the partition has an opening. The anaerobic tank is filled with high-efficiency anaerobic granular sludge, and the aerobic tank is filled with biological packing material made of polyurethane.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) The present invention can intercept large particulate impurities in wastewater by setting the filter components, so as to avoid affecting the subsequent wastewater treatment work. In particular, the second rubber connector, hollow tube, limit block, spring, connecting column and connecting rod can make the filter plate vibrate itself during the impact of wastewater on the filter plate, so as to avoid clogging.

[0015] (2) The present invention can decompose organic nitrogen and ammonia nitrogen in wastewater by setting an electrocatalytic oxidation component, and then can achieve denitrification by setting a biological denitrification component. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a device for removing total nitrogen from wastewater according to this utility model;

[0017] Figure 2 This utility model relates to a device for removing total nitrogen from wastewater. Figure 1 A top-view structural diagram;

[0018] Figure 3 This utility model relates to a filter component used in a device for removing total nitrogen from wastewater.

[0019] Figure 4This is a schematic cross-sectional view of the hollow tube structure in a device for removing total nitrogen from wastewater according to this utility model.

[0020] Figure 5 This utility model relates to a device for removing total nitrogen from wastewater. Figure 4 Enlarged at point A in the image.

[0021] The attached figures are labeled as follows:

[0022] 1. Pretreatment tank; 11. Filter plate; 12. First rubber connector; 13. Second rubber connector; 14. Hollow tube; 15. Connecting column; 16. Connecting rod; 17. Limiting block; 18. Spring; 2. Electrolytic cell; 21. Anode plate; 22. Ion exchange membrane; 23. Cathode plate; 3. Denitrification reaction tank; 31. Baffle plate; 32. Anaerobic tank; 33. Aerobic tank; 4. First connecting pipe; 5. Second connecting pipe. Detailed Implementation

[0023] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0024] like Figure 1-5 As shown, a device for removing total nitrogen from wastewater includes: a pretreatment tank 1, characterized in that a filter assembly for filtration is provided inside the pretreatment tank 1, and an electrocatalytic oxidation assembly is connected to the right side of the pretreatment tank 1 through a first connecting pipe 4, and the electrocatalytic oxidation assembly is connected to a biological denitrification assembly through a second connecting pipe 5.

[0025] The filter assembly includes two filter plates 11. The bottom surface of each filter plate 11 contacts the bottom of the inner wall of the pretreatment tank 1. The two filter plates 11 are fixedly connected by a first rubber connector 12. The bottom surface of the second rubber connector 12 is fixedly installed to the bottom of the inner wall of the pretreatment tank 1. A second rubber connector 13 is fixedly installed on one side of each filter plate 11. The bottom surface of the second rubber connector 13 contacts the bottom of the inner wall of the pretreatment tank 1, and a hollow tube 14 is fixedly installed on one side of the second rubber connector 13. The bottom end and outer wall of the hollow tube 14 are fixedly installed to the inner wall of the pretreatment tank 1. The filter assembly also includes a connecting rod 16 for connecting... The rod 16 is fixedly installed with the filter plate 11. A connecting column 15 is fixedly installed on the bottom surface of the connecting rod 16. The end of the connecting column 15 away from the connecting rod 16 is located inside the hollow tube 14. A limiting block 17 is fixedly installed at the bottom end of the connecting column 15. The limiting block 17 is slidably arranged with the annular groove opened in the inner wall of the hollow tube 14. The edge of the limiting block 17 is spaced away from the inner wall of the annular groove. This arrangement allows the limiting block 17 to have a range of movement, which can improve the vibration effect under the impact of wastewater. A spring 18 is fixedly installed on the top surface of the limiting block 17. The spring 18 is sleeved on the outside of the connecting column 15, and the top of the spring 18 is fixedly installed with the top of the inner wall of the annular groove.

[0026] The electrocatalytic oxidation assembly includes an electrolytic cell 2. The left side of the electrolytic cell 2 is connected to the right end of the first connecting pipe 4. An anode plate 21 and a cathode plate 22 are fixedly installed on the inner wall of the electrolytic cell 2. An ion exchange membrane 22 is disposed between the anode plate 21 and the cathode plate 22. The ion exchange membrane 22 is fixedly installed to the inner wall of the electrolytic cell 2. The ion exchange membrane 22 can separate the anode plate 21 and the cathode plate 22 to prevent mutual interference between the two electrode products, while promoting the directional migration of ions and improving the electrolysis efficiency.

[0027] The biological denitrification component includes a denitrification reaction tank 3. The left side of the denitrification reaction tank 3 is connected to the right end of the second connecting pipe 5, and the left end of the second connecting pipe 5 is connected to the right side of the electrolytic cell 2. The inner wall of the denitrification reaction tank 3 is provided with an anaerobic tank 32 and an aerobic tank 33 through a partition 31. The side of the partition 31 has an opening. The anaerobic tank 32 is filled with high-efficiency anaerobic granular sludge, and the aerobic tank 33 is filled with biological packing material made of polyurethane.

[0028] Working principle: First, the wastewater enters the pretreatment tank 1 and is filtered through the filter plate 11. During the wastewater impact process, the filter plate 11 can be effectively vibrated, which can prevent the filter plate 11 from clogging and thus avoid affecting the filtration work. After being filtered by the filter plate 11, the wastewater enters the electrolysis tank 2 through the first connecting pipe 4, which can achieve efficient oxidation and decomposition of nitrogen compounds in the wastewater. After electrolysis and decomposition, the wastewater enters the denitrification reaction tank 3. Finally, under the action of efficient anaerobic granular sludge and biological packing, effective denitrification is achieved.

[0029] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this utility model and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0030] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A device for removal of total nitrogen from wastewater, comprising: The utility model provides a pretreatment pool (1), it is characterized in being provided with filter assembly for filtering treatment in the inside of the pretreatment pool (1), and the right side of the pretreatment pool (1) is connected with electrical catalytic oxidation assembly through first connecting pipe (4), and the electrical catalytic oxidation assembly is connected with biological denitrification assembly through second connecting pipe (5).

2. The device for removing total nitrogen in wastewater according to claim 1, characterized in that, The filter assembly comprises filter plates (11), the number of the filter plates (11) is two, the bottom surface of the filter plates (11) is arranged in contact with the bottom of the inner wall of the pretreatment pool (1), the two filter plates (11) are fixedly connected through first rubber connecting bodies (12), the bottom surface of the second rubber connecting body (12) is fixedly installed with the bottom of the inner wall of the pretreatment pool (1), one side of the filter plate (11) is fixedly installed with a second rubber connecting body (13), the bottom surface of the second rubber connecting body (13) is arranged in contact with the bottom of the inner wall of the pretreatment pool (1), and the second rubber connecting body (13) is fixedly installed with a hollow tube (14) on one side.

3. The device for removing total nitrogen in wastewater according to claim 2, wherein The filter assembly further comprises a connecting rod (16) fixedly installed with the filter plate (11), the bottom surface of the connecting rod (16) is fixedly installed with a connecting column (15), one end of the connecting column (15) away from the connecting rod (16) is located in the hollow tube (14), the bottom end of the connecting column (15) is fixedly installed with a limiting block (17), the limiting block (17) is arranged in sliding connection with the annular groove formed in the inner wall of the hollow tube (14), the top surface of the limiting block (17) is fixedly installed with a spring (18), the spring (18) is sleeved on the outside of the connecting column (15), and the top end of the spring (18) is fixedly installed with the top of the inner wall of the annular groove.

4. The device for removing total nitrogen in wastewater according to claim 3, characterized in that, The edge of the limiting block (17) is arranged at a distance from the inner wall of the annular groove.

5. The device for removing total nitrogen from wastewater according to claim 1, wherein The electrical catalytic oxidation assembly comprises an electrolytic tank (2), the left side of the electrolytic tank (2) is in communication with the right end of the first connecting pipe (4), and the inner wall of the electrolytic tank (2) is fixedly installed with an anode plate (21) and a cathode plate (22).

6. The device for removing total nitrogen in wastewater according to claim 5, wherein An ion exchange membrane (22) is arranged between the anode plate (21) and the cathode plate (22), and the ion exchange membrane (22) is fixedly installed with the inner wall of the electrolytic tank (2).

7. The device for removing total nitrogen from wastewater according to claim 1, wherein The biological denitrification assembly comprises a denitrification reaction tank (3), the left side of the denitrification reaction tank (3) is in communication with the right end of the second connecting pipe (5), the left end of the second connecting pipe (5) is in communication with the right side of the electrolytic tank (2), the inner wall of the denitrification reaction tank (3) is provided with an anaerobic tank (32) and an aerobic tank (33) through a partition plate (31), the side of the partition plate (31) is provided with an opening, the anaerobic tank (32) is filled with high-efficiency anaerobic granular sludge, and the aerobic tank (33) is filled with biological filler, and the filler is made of polyurethane.

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