Aeration tank for nitrogen and phosphorus removal of sewage

Abstract

The utility model relates to the technical field of aeration tanks, and provides an aeration tank for nitrogen and phosphorus removal of sewage, which comprises a tank body, a filtering structure is arranged in the tank body, an exhaust pipe is fixed on one side of the top end of the tank body, and a stirring structure is fixed on the other side of the top end of the tank body. By arranging the stirring structure, under the action of the bearing, the friction force between the driving gear and the driven gear and the tank body is reduced, through holes of the first stirring blade and the second stirring blade can reduce fluid resistance and reduce rotation energy consumption, and under the action of the first stirring blade and the second stirring blade, uniform mixing of sewage can be promoted; according to the aeration tank for nitrogen and phosphorus removal of sewage, sludge precipitation is prevented, and uniform distribution of oxygen in water is ensured, so that the sewage treatment speed is increased, the function of facilitating uniform distribution of the device is realized, and the working efficiency of the aeration tank for nitrogen and phosphorus removal of sewage in use is improved.

Description

Technical Field

[0001] This utility model relates to the field of aeration tank technology, and in particular to an aeration tank for denitrification and phosphorus removal in wastewater. Background Technology

[0002] Biological denitrification and phosphorus removal aeration tank is a sewage treatment device that uses aeration to promote the metabolic activities of microorganisms in sewage. It is mainly used in various types of sewage treatment processes. Through aeration, the metabolic activities of microorganisms in sewage are accelerated, thereby achieving the purpose of removing nitrogen and phosphorus from sewage. Therefore, an aeration tank for denitrification and phosphorus removal in sewage is used.

[0003] To address this issue, patent CN214571364U discloses a high-efficiency purification tank for wastewater phosphorus and nitrogen removal, relating to the field of phosphorus and nitrogen removal technology. This design aims to solve the problem that existing purification tanks for wastewater phosphorus and nitrogen removal suffer from limited functionality, inability to complete the entire purification process, and excessively long purification times, thus affecting efficiency. The first sedimentation tank has an inlet on one side, an anoxic tank on one side, a storage tank on one side of the anoxic tank, an aerobic tank at the bottom of the storage tank, a second sedimentation tank on one side of the aerobic tank, a third sedimentation tank at the bottom of the second sedimentation tank, and a filter tank at the bottom of the second sedimentation tank, with an outlet inside the filter tank.

[0004] Although the high-efficiency wastewater phosphorus and nitrogen removal purification tanks mentioned above are equipped with filter boxes that can filter and purify wastewater, their low operating efficiency is due to the inconvenience of stirring, ensuring uniform oxygen distribution in the water, and further hindering the improvement of wastewater treatment effects. Summary of the Invention

[0005] The purpose of this invention is to provide an aeration tank for wastewater denitrification and phosphorus removal, in order to solve the problem that existing aeration tanks for wastewater denitrification and phosphorus removal are inconvenient to stir.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an aeration tank for denitrification and phosphorus removal in wastewater, comprising a tank body;

[0007] The pool body is equipped with a filtration structure inside, an exhaust pipe is fixed to one side of the top of the pool body, and a stirring structure is fixed to the other side of the top of the pool body.

[0008] The stirring structure includes a shell fixed to the top of the tank. A first stirring rod is arranged inside the tank on one side below the shell, and a second stirring rod is arranged inside the tank on the other side below the shell. First stirring blades are evenly fixed on both sides of the first stirring rod, and second stirring blades are evenly fixed on both sides of the second stirring rod. The top of the first stirring rod extends into the inside of the shell and is fixed with a driving gear. The top of the second stirring rod extends into the inside of the shell and is fixed with a driven gear. Bearings are fixed to the bottom of both the driving gear and the driven gear. A drive motor is installed on the top of the shell above the driving gear.

[0009] A water inlet hopper is fixed to the top of one side of the pool body of the stirring structure.

[0010] When using this device, the addition of a stirring structure facilitates uniform distribution, thereby improving the working efficiency of the wastewater denitrification and phosphorus removal aeration tank; the addition of an aeration structure facilitates wastewater denitrification and phosphorus removal, thereby improving the applicability of the wastewater denitrification and phosphorus removal aeration tank; and the addition of a filtration structure facilitates purification, thereby improving the convenience of use of the wastewater denitrification and phosphorus removal aeration tank.

[0011] Preferably, a drain pipe is fixed to one side of the bottom of the pool, a base is fixed to the bottom of the pool on one side of the filtration structure, and an aeration structure is fixed to the top of the base.

[0012] Preferably, the aeration structure includes a filter box, an air inlet pipe, a stainless steel filter screen, a connecting pipe, a coil, and an aeration pipe. The coil is fixed to the top of the base, and the aeration pipes are evenly distributed through the top of the coil. A filter box is fixed to the outer wall of the tank on one side of the coil. A stainless steel filter screen is installed inside the filter box. An air inlet pipe is fixed to one side of the filter box, and a connecting pipe is fixed to the other side of the filter box. The stainless steel filter screen effectively filters out impurities and particulate matter in the gas, ensuring the purity and quality of the gas, preventing large particles from entering the interior of the coil, and avoiding damage or blockage to the aeration pipe.

[0013] Preferably, one end of the air inlet pipe is fixed with a flange, one end of the connecting pipe extends into the interior of the coil, a one-way valve is installed at the top of the aeration pipe, and the aeration pipes are arranged in a ring array at the top of the coil. Under the action of the one-way valve, gas enters the interior of the tank, thereby accelerating the metabolic activity of microorganisms in the wastewater, thus achieving the purpose of removing nitrogen and phosphorus from the wastewater.

[0014] Preferably, the output end of the drive motor extends into the interior of the housing and is fixedly connected to the top of the drive gear. The drive gear and the driven gear mesh with each other. The interiors of the first and second stirring blades are uniformly perforated with through holes. The bottom end of the bearing is fixedly connected to the top end of the tank body. Under the action of the bearing, the friction between the drive and driven gears and the tank body is reduced. The through holes in the first and second stirring blades reduce fluid resistance and rotational energy consumption. Under the action of the first and second stirring blades, uniform mixing of wastewater is promoted, sludge sedimentation is prevented, and oxygen is ensured to be evenly distributed in the water, thereby accelerating the wastewater treatment process.

[0015] Preferably, the filtration structure includes a fixing plate, a fixing frame, an activated carbon filter, and fixing bolts. The fixing frame is disposed inside the tank body, and its top extends to the outside of the tank body and is fixed with the fixing plate. Fixing bolts penetrate both sides of the fixing plate. The activated carbon filter is disposed inside the fixing frame. During the wastewater treatment process, under the action of the activated carbon filter, phosphorus and nitrogen compounds in the water can be removed through adsorption, while also adsorbing pollutants such as organic matter, odor, and color, thereby improving water quality.

[0016] Preferably, a handle is fixed to the top of the fixing plate, and the fixing plate and the pool body are fixedly connected by fixing bolts. Under the action of the fixing bolts, the fixing plate and the pool body can be fixed or separated, thereby enabling the activated carbon filter to be fixed or replaced.

[0017] The aeration tank for nitrogen and phosphorus removal in wastewater provided by this utility model has the following advantages:

[0018] By incorporating a stirring structure, the friction between the driving and driven gears and the tank body is reduced under the action of the bearings. The through holes of the first and second stirring blades reduce fluid resistance and reduce rotational energy consumption. Under the action of the first and second stirring blades, the wastewater can be mixed evenly, sludge can be prevented from settling, and oxygen can be evenly distributed in the water, thereby accelerating the wastewater treatment speed and realizing the function of easy uniform distribution of the device. This improves the working efficiency of the aeration tank for nitrogen and phosphorus removal in wastewater.

[0019] With its aeration structure and stainless steel filter screen, the system effectively filters out impurities and particulate matter from the gas, ensuring gas purity and quality. This prevents large particles from entering the coils and causing damage or blockage to the aeration pipes. The one-way valve allows gas to enter the tank, accelerating the metabolic activity of microorganisms in the wastewater and thus removing nitrogen and phosphorus. This device facilitates nitrogen and phosphorus removal from wastewater, improving its applicability in use.

[0020] By incorporating a filtration structure, the activated carbon filter removes phosphorus and nitrogen compounds from the water through adsorption during the wastewater treatment process. It also adsorbs organic matter, odors, and color pollutants, thereby improving water quality. The fixing bolts allow the fixing plate to be secured to or separated from the tank body, enabling the activated carbon filter to be fixed or replaced. This facilitates the purification process and enhances the ease of use of the wastewater denitrification and phosphorus removal aeration tank. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 This is a cross-sectional three-dimensional structural diagram of the present invention;

[0023] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0024] Figure 4 This is a three-dimensional cross-sectional structural diagram of the stirring structure of this utility model;

[0025] Figure 5 This is a three-dimensional cross-sectional structural diagram of the filter structure of this utility model.

[0026] The following are the annotations in the diagram: 1. Tank body; 2. Aeration structure; 201. Filter box; 202. Air inlet pipe; 203. Stainless steel filter screen; 204. Connecting pipe; 205. Coil; 206. Aeration pipe; 3. Water inlet hopper; 4. Stirring structure; 401. Drive motor; 402. Shell; 403. Drive gear; 404. Driven gear; 405. First stirring rod; 406. First stirring blade; 407. Second stirring rod; 408. Second stirring blade; 409. Bearing; 5. Filtration structure; 501. Fixing plate; 502. Fixing frame; 503. Activated carbon filter screen; 504. Fixing bolt; 6. Exhaust pipe; 7. Base; 8. Drain pipe. Detailed Implementation

[0027] 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.

[0028] Please see Figures 1-5This utility model provides an aeration tank for denitrification and phosphorus removal in wastewater, including a tank body 1. The tank body 1 is equipped with a filter structure 5. The filter structure 5 includes a fixing plate 501, a fixing frame 502, an activated carbon filter screen 503, and fixing bolts 504. The fixing frame 502 is located inside the tank body 1. The top of the fixing frame 502 extends to the outside of the tank body 1 and is fixed to the fixing plate 501. Fixing bolts 504 penetrate both sides of the inside of the fixing plate 501. The activated carbon filter screen 503 is installed inside the fixing frame 502. A handle is fixed to the top of the fixing plate 501. The fixing plate 501 and the tank body 1 are fixedly connected by fixing bolts 504.

[0029] Reference Figure 2 and Figure 5 As shown, by moving the fixing plate 501 with the handle, the fixing frame 502 is moved into the interior of the tank body 1 and abuts against the bottom of the tank body 1. Under the action of the fixing bolt 504, the fixing plate 501 can be fixed or separated from the tank body 1, thereby allowing the activated carbon filter 503 to be fixed or replaced. In the sewage treatment process, under the action of the activated carbon filter 503, phosphorus and nitrogen compounds in the water can be removed through the adsorption process, while pollutants such as organic matter, odor and color in the water can be adsorbed, thereby improving water quality.

[0030] An exhaust pipe 6 is fixed to one side of the top of the tank body 1, and a stirring structure 4 is fixed to the other side of the top of the tank body 1. The stirring structure 4 includes a shell 402 fixed to the top of the tank body 1. A first stirring rod 405 is arranged inside the tank body 1 below the shell 402, and a second stirring rod 407 is arranged inside the tank body 1 below the shell 402. First stirring blades 406 are evenly fixed on both sides of the first stirring rod 405, and second stirring blades 408 are evenly fixed on both sides of the second stirring rod 407. The top of the first stirring rod 405 extends into the interior of the shell 402 and is fixed with a drive gear 403. The top of the two stirring rods 407 extends into the interior of the housing 402 and is fixed with a driven gear 404. The bottom of both the driving gear 403 and the driven gear 404 are fixed with bearings 409. A drive motor 401 is installed on the top of the housing 402 above the driving gear 403. The output end of the drive motor 401 extends into the interior of the housing 402 and is fixedly connected to the top of the driving gear 403. The driving gear 403 and the driven gear 404 are meshed. The interior of the first stirring blade 406 and the second stirring blade 408 is uniformly perforated with through holes. The bottom of the bearing 409 is fixedly connected to the top of the tank body 1.

[0031] Reference Figure 2 and Figure 4As shown, when the drive motor 401 is started, it drives the active gear 403 to rotate at the top of the bearing 409, and simultaneously drives the driven gear 404 to rotate at the top of the bearing 409. Under the action of the bearing 409, the friction between the active gear 403 and the driven gear 404 and the tank body 1 is reduced. The active gear 403 drives the first stirring blade 406 to stir inside the tank body 1 through the first stirring rod 405, and the driven gear 404 drives the second stirring blade 408 to stir inside the tank body 1 through the second stirring rod 407. The through holes of the first stirring blade 406 and the second stirring blade 408 can reduce fluid resistance and reduce rotational energy consumption. Under the action of the first stirring blade 406 and the second stirring blade 408, the wastewater can be mixed evenly, sludge can be prevented from settling, and oxygen can be evenly distributed in the water, thereby accelerating the wastewater treatment speed.

[0032] A water inlet hopper 3 is fixed to the top of one side of the tank body 1 of the stirring structure 4, and a drain pipe 8 is fixed to one side of the bottom of the tank body 1. A base 7 is fixed to the bottom of one side of the tank body 1 of the filtration structure 5, and an aeration structure 2 is fixed to the top of the base 7. The aeration structure 2 includes a filter box 201, an air inlet pipe 202, a stainless steel filter screen 203, a connecting pipe 204, a coil 205, and an aeration pipe 206. The coil 205 is fixed to the top of the base 7, and the aeration pipe 206 is evenly inserted through the top of the coil 205. A filter box 201 is fixed on the outer wall of the pool body 1 on one side of the coil 205. A stainless steel filter screen 203 is installed inside the filter box 201. An air inlet pipe 202 is fixed on one side of the filter box 201, and a connecting pipe 204 is fixed on the other side of the filter box 201. A flange is fixed at one end of the air inlet pipe 202, and one end of the connecting pipe 204 extends into the interior of the coil 205. A one-way valve is installed on the top of the aeration pipe 206, and the aeration pipes 206 are arranged in a ring array on the top of the coil 205.

[0033] Reference Figure 2 and Figure 3 As shown, an external air pump connected to the flange allows gas to pass through a stainless steel filter screen 203 for filtration. The filtered gas then enters the interior of the coil 205 through the connecting pipe 204. Under the action of the stainless steel filter screen 203, impurities and particulate matter in the gas can be effectively filtered out, ensuring the purity and quality of the gas and preventing large particles from entering the interior of the coil 205, thus avoiding damage or blockage to the aeration pipe 206. Under the action of the one-way valve, the gas enters the interior of the tank 1, thereby accelerating the metabolic activity of microorganisms in the wastewater, thereby achieving the purpose of removing nitrogen and phosphorus from the wastewater.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sewage denitrification and phosphorus removal aeration tank, comprising a tank body (1); Its characterized in that: The inside of the tank body (1) is provided with a filter structure (5), one side of the top end of the tank body (1) is fixed with an exhaust pipe (6), and the other side of the top end of the tank body (1) is fixed with a stirring structure (4); The stirring structure (4) comprises a shell cover (402) fixed to the top end of the tank body (1), the inside of one side of the tank body (1) below the shell cover (402) is provided with a first stirring rod (405), the inside of the other side of the tank body (1) below the shell cover (402) is provided with a second stirring rod (407), the two sides of the first stirring rod (405) are uniformly fixed with first stirring blades (406), the two sides of the second stirring rod (407) are uniformly fixed with second stirring blades (408), the top end of the first stirring rod (405) extends into the inside of the shell cover (402) and is fixed with a driving gear (403), the top end of the second stirring rod (407) extends into the inside of the shell cover (402) and is fixed with a driven gear (404), the bottom ends of the driving gear (403) and the driven gear (404) are fixed with bearings (409), and the top end of the shell cover (402) above the driving gear (403) is installed with a driving motor (401). The top end of one side of the tank body (1) of the stirring structure (4) is fixed with a water inlet (3).

2. The aeration tank for denitrification and dephosphorization of sewage according to claim 1, characterized in that: One side of the bottom of the tank body (1) is fixed with a drain pipe (8), one side of the bottom of the tank body (1) of the filter structure (5) is fixed with a base (7), and the top end of the base (7) is fixed with an aeration structure (2).

3. The aeration tank for denitrification and dephosphorization of sewage according to claim 2, characterized in that: The aeration structure (2) comprises a filter box (201), an air inlet pipe (202), a stainless steel filter screen (203), a connecting pipe (204), a coil pipe (205) and an aeration pipe (206), the coil pipe (205) is fixed to the top end of the base (7), the top of the coil pipe (205) is uniformly penetrated by the aeration pipe (206), the outer wall of one side of the tank body (1) of the coil pipe (205) is fixed with the filter box (201), the inside of the filter box (201) is provided with the stainless steel filter screen (203), one side of the filter box (201) is fixed with the air inlet pipe (202), and the other side of the filter box (201) is fixed with the connecting pipe (204).

4. The aeration tank for denitrification and dephosphorization of sewage according to claim 3, characterized in that: One end of the air inlet pipe (202) is fixed with a flange, one end of the connecting pipe (204) extends into the inside of the coil pipe (205), the top of the aeration pipe (206) is installed with a check valve, and the aeration pipes (206) are arranged in an annular array on the top of the coil pipe (205).

5. The sewage denitrification and dephosphorization aeration tank according to claim 1, characterized in that: The output end of the driving motor (401) extends into the inside of the shell cover (402) and is fixedly connected with the top end of the driving gear (403), the driving gear (403) and the driven gear (404) are meshingly connected, the inside of each of the first stirring blades (406) and the second stirring blades (408) is uniformly penetrated by a through hole, and the bottom end of the bearing (409) is fixedly connected with the top end of the tank body (1).

6. The sewage nitrogen and phosphorus removal aeration tank according to claim 1, characterized in that: Said filter structure (5) includes fixed plate (501), fixed frame (502), activated carbon filter screen (503) and fixed bolt (504), the fixed frame (502) is arranged in the inside of pool body (1), the top of fixed frame (502) extends to the outside of pool body (1) and is fixed with fixed plate (501), both sides in the inside of fixed plate (501) are penetrated with fixed bolt (504), the inside of fixed frame (502) is provided with activated carbon filter screen (503).

7. The aeration tank for denitrification and dephosphorization of sewage according to claim 6, characterized in that: The top of fixed plate (501) is fixed with handle, and the fixed plate (501) and the pool body (1) are fixedly connected through the fixed bolt (504).

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