A device for denitrification of sewage

Abstract

The utility model relates to sewage treatment field especially sewage denitrification treatment device, including aerobic tank, the fixedly connected with main pipe in aerobic tank, the fixedly connected with a plurality of annular pipes on main pipe, a plurality of annular pipes all with aerobic tank coaxial, every annular pipe all is set up a plurality of injection ports, a plurality of annular pipes are evenly distributed from below to above on main pipe, the middle part of aerobic tank is provided with the casing, the rotatable connection is established in casing and the shaft, the fixedly connected with the impeller on the shaft, the air inlet is seted up on casing upper end, main pipe one end is fixedly connected on the lateral wall of casing, the fixedly connected with crossbeam on aerobic tank upper end, the fixedly connected with drive motor on crossbeam, the output shaft on drive motor is fixedly connected with the shaft, casing is fixedly connected on crossbeam, the treatment device of the application can make bubble and sewage contact fully, avoid appearing the phenomenon that dead angle cannot contact bubble.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment, and in particular to a wastewater denitrification treatment device. Background Technology

[0002] Wastewater denitrification treatment involves discharging wastewater into an aerobic tank and then adding nitrifying bacteria. Under aerobic conditions, the nitrifying bacteria oxidize ammonia nitrogen into nitrite nitrogen and nitrate nitrogen. During aerobic treatment, the wastewater needs to be aerated to ensure sufficient contact between the wastewater and air. Conventional devices insert an exhaust pipe into the wastewater to allow the air bubbles to come into contact with it. However, this method cannot ensure sufficient contact between the air bubbles and the wastewater, is time-consuming, and due to the large area of ​​the aerobic tank, dead zones may occur where the air bubbles cannot reach the tank, affecting the overall effectiveness of aerobic treatment and thus slowing down the overall progress of wastewater treatment. Utility Model Content

[0003] In view of this, the technical problem to be solved by this utility model is to provide a wastewater denitrification treatment device. The treatment device of this application can make the bubbles fully contact the wastewater and avoid the phenomenon that the bubbles cannot contact the dead corners.

[0004] A wastewater denitrification treatment device includes an aerobic tank, a main pipe fixedly connected inside the aerobic tank, and multiple annular pipes fixedly connected to the main pipe. The multiple annular pipes are all coaxial with the aerobic tank, and each annular pipe has multiple spray holes.

[0005] Multiple annular pipes are evenly distributed from bottom to top on the main pipe.

[0006] The aerobic tank has a shell in the middle, and a rotating shaft is rotatably connected inside the shell. An impeller is fixedly connected to the rotating shaft. An air inlet is opened at the upper end of the shell, and one end of the main pipe is fixedly connected to the side wall of the shell.

[0007] A crossbeam is fixedly connected to the upper end of the aerobic tank, and a drive motor is fixedly connected to the crossbeam. The rotating shaft is fixedly connected to the output shaft of the drive motor, and the shell is fixedly connected to the crossbeam.

[0008] Two stirring blades are fixedly connected to the lower end of the rotating shaft.

[0009] Both stirring blades are spiral-shaped.

[0010] Multiple nozzles are located on the outside of the annular tube.

[0011] A filter screen is fixedly connected to the upper end of the housing, and the filter screen covers the air inlet.

[0012] The filter screen is made of nylon mesh.

[0013] The filter screen is made of steel wire mesh. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0015] Figure 1 This is a schematic diagram of the overall structure of a wastewater denitrification treatment device.

[0016] Figure 2 This is a schematic diagram of the ring-shaped tube structure;

[0017] Figure 3 This is a schematic diagram of the impeller structure. Detailed Implementation

[0018] The present invention will be described in detail with reference to the accompanying drawings of the embodiments thereof.

[0019] A wastewater denitrification treatment device includes an aerobic tank 301. A main pipe 107 is fixedly connected to the aerobic tank 301 by bolts. Multiple annular pipes 201 are welded onto the main pipe 107. The multiple annular pipes 201 are all coaxial with the aerobic tank 301. Multiple spray holes 202 are opened on each annular pipe 201.

[0020] See Figure 1-2 ,

[0021] When using the treatment device, the staff first discharges the sewage into the aerobic tank 301, and then adds nitrifying bacteria to the sewage. Under aerobic conditions, the nitrifying bacteria oxidize ammonia nitrogen into nitrite nitrogen and nitrate nitrogen. During aerobic treatment, in order to ensure that the sewage comes into full contact with the air, the sewage needs to be aerated. The conventional device is to insert the exhaust pipe into the sewage so that the air bubbles come into contact with the sewage. However, this method cannot ensure that the air bubbles come into full contact with the sewage, which is time-consuming. Due to the large area of ​​the aerobic tank, dead corners are prone to occur, which prevent the air bubbles from coming into contact with the sewage, affecting the overall effect of aerobic treatment and thus slowing down the overall progress of sewage treatment.

[0022] During use, the treatment device of this application introduces air into the main pipe 107, which disperses the air into multiple annular pipes 201. Since the multiple annular pipes 201 are annular and coaxial with the aerobic tank 301, they can cover every corner of the aerobic tank 301. When air is ejected through multiple nozzles 202, the air bubbles are evenly dispersed through the nozzles 202, thus ensuring full contact with the wastewater and avoiding dead zones where the air bubbles cannot reach the wastewater. The impact force generated when the air bubbles are discharged accelerates the flow rate of the wastewater, achieving a stirring effect, thereby improving the efficiency of aerobic treatment, shortening the aerobic treatment time, and improving the overall quality of wastewater treatment.

[0023] Multiple annular pipes 201 are evenly distributed from bottom to top on the main pipe 107.

[0024] See Figure 2 ,

[0025] When the bubbles are ejected through the multiple nozzles 202 on the multiple annular pipes 201, the bubbles can spread throughout the interior of the aerobic tank 301. Furthermore, since the multiple annular pipes 201 are evenly distributed from bottom to top on the main pipe 107, the defect that the bubbles cannot contact the lower layer of sewage can also be compensated.

[0026] The aerobic tank 301 has a shell 101 in the middle. Inside the shell 101, a rotating shaft 106 is rotatably connected via a bearing. An impeller 102 is fixedly connected to the rotating shaft 106 via bolts. An air inlet 103 is opened at the upper end of the shell 101. One end of the main pipe 107 is welded to the side wall of the shell 101.

[0027] See Figure 3 ,

[0028] When wastewater needs to be aerated, the operator controls the rotating shaft 106 inside the housing 101 to rotate. The rotating shaft 106 drives the impeller 102 to rotate. When the impeller 102 rotates, it uses centrifugal force to discharge the air inside the housing 101 through the main pipe 107. At the same time, a negative pressure is generated inside the housing 101, and air enters the housing 101 through the air inlet 103 at the upper end of the housing 101, so as to achieve the function of continuously discharging air and generating bubbles.

[0029] A crossbeam 302 is fixedly connected to the upper end of the aerobic tank 301. A drive motor 303 is fixedly connected to the crossbeam 302. A rotating shaft 106 is fixedly connected to the output shaft of the drive motor 303. The shell 101 is fixedly connected to the crossbeam 302.

[0030] See Figure 1 ,

[0031] When the drive motor 303 is powered on, it drives the rotating shaft 106 to rotate, which in turn drives the impeller 102 to rotate, thus achieving the exhaust function. The crossbeam 302 serves to support the drive motor 303.

[0032] Two stirring blades 105 are fixedly connected to the lower end of the rotating shaft 106 by bolts.

[0033] See Figure 3 ,

[0034] While the impeller 102 rotates to discharge the bubbles, the rotating shaft 106 can also drive the two stirring blades 105 to rotate, thereby agitating the sewage, promoting sewage flow, and allowing the sewage to come into full contact with nitrifying bacteria and bubbles, further improving sewage treatment efficiency.

[0035] Both stirring blades 105 are spiral-shaped.

[0036] See Figure 3 ,

[0037] When the spiral stirring blades 105 rotate, the two stirring blades 105 work together to make the sewage at the bottom flow upward, thereby promoting the circulation of sewage and promoting the upward movement of sediment at the bottom of the sewage, further improving the sewage treatment efficiency.

[0038] Multiple nozzles 202 are located on the outside of the annular pipe 201.

[0039] See Figure 2 ,

[0040] The bubbles are ejected through the outside of the annular pipe 201, thereby further avoiding the phenomenon that the bubbles cannot reach the dead corners inside the aerobic tank 301, so that the bubbles cover the aerobic tank 301.

[0041] A filter screen 104 is fixedly connected to the upper end of the housing 101 by bolts, and the filter screen 104 covers the air inlet 103.

[0042] See Figure 3 ,

[0043] The filter 104 serves to filter the air and prevent foreign objects from falling into the housing 101 and affecting the impeller 102.

[0044] Filter 104 is made of nylon mesh.

[0045] See Figure 3 ,

[0046] Nylon mesh is lightweight, corrosion-resistant, rust-proof, and easy to clean and replace.

[0047] Filter 104 is made of steel wire mesh.

[0048] See Figure 3 ,

[0049] Steel wire mesh has the characteristics of rust prevention and high hardness, and can withstand some heavy objects, preventing objects from falling and damaging the filter screen 104.

Claims

1. A wastewater denitrification treatment device, characterized in that: It includes an aerobic tank, a main pipe is fixedly connected inside the aerobic tank, and multiple annular pipes are fixedly connected to the main pipe. All the annular pipes are coaxial with the aerobic tank, and each annular pipe has multiple spray holes.

2. The wastewater denitrification treatment device according to claim 1, characterized in that: Multiple annular pipes are evenly distributed from bottom to top on the main pipe.

3. The wastewater denitrification treatment device according to claim 1, characterized in that: The aerobic tank has a shell in the middle, and a rotating shaft is rotatably connected inside the shell. An impeller is fixedly connected to the rotating shaft. An air inlet is opened at the upper end of the shell, and one end of the main pipe is fixedly connected to the side wall of the shell.

4. The wastewater denitrification treatment device according to claim 3, characterized in that: A crossbeam is fixedly connected to the upper end of the aerobic tank, and a drive motor is fixedly connected to the crossbeam. The rotating shaft is fixedly connected to the output shaft of the drive motor, and the shell is fixedly connected to the crossbeam.

5. A wastewater denitrification treatment device according to claim 4, characterized in that: Two stirring blades are fixedly connected to the lower end of the rotating shaft.

6. The wastewater denitrification treatment device according to claim 5, characterized in that: Both stirring blades are spiral-shaped.

7. The wastewater denitrification treatment device according to claim 1, characterized in that: Multiple nozzles are located on the outside of the annular tube.

8. The wastewater denitrification treatment device according to claim 3, characterized in that: A filter screen is fixedly connected to the upper end of the housing, and the filter screen covers the air inlet.

9. A wastewater denitrification treatment device according to claim 8, characterized in that: The filter screen is made of nylon mesh.

10. A wastewater denitrification treatment device according to claim 8, characterized in that: The filter screen is made of steel wire mesh.

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