Denitrification treatment device

Abstract

The utility model relates to the technical field of wastewater treatment, in particular to a denitrification treatment device which comprises a reaction tank body, a motor is fixedly mounted on the bottom surface of the reaction tank body, and the shaft end of an output shaft of the motor rotationally penetrates through the reaction tank body into the reaction tank body and is fixedly connected with a turntable; an aeration assembly is fixedly mounted on the top surface of the turntable, and the top end of the aeration assembly extends to the upper part of the reaction tank body and is rotatably connected with a gas guide assembly in a penetrating manner; the plurality of aeration pipes rotate around the axis of the stirring shaft along with the rotation of the rotating disc, so that the plurality of aeration pipes perform circumferential dynamic aeration at the bottom of the reaction tank body, and the problem that the performance of the denitrification treatment device is influenced by possible dead zones and oxygen concentration gradient of the reaction tank body is effectively relieved; meanwhile, the dynamic aeration action of the aeration pipe is matched with the stirring action of the stirring blades, so that the uniform mixing effect of the wastewater sulfate reducing bacteria can be further improved, and the working performance of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, and specifically to a denitrification treatment device. Background Technique

[0002] The denitrification treatment technology is a technology that uses specific microorganisms to reduce the nitrates formed by nitrification into nitrogen gas or other harmless gases. This technology can be used to treat nitrate pollution in sewage to reduce the impact on the environment. The sulfur autotrophic denitrification technology is one of the commonly used denitrification technologies in the prior art.

[0003] The existing denitrification treatment devices generally include a tank body, in which a stirring mechanism and an air supply pipe are arranged. When in use, the wastewater is fed into the tank body, and the tank body contains suitable sulfate-reducing bacteria and oxygen. The sulfate-reducing bacteria use hydrogen sulfide and nitrate to react to generate sulfate, water and nitrogen gas. The sulfate-reducing bacteria oxidize hydrogen sulfide into sulfate and at the same time reduce nitrate into nitrogen gas. Among them, the setting of the stirring mechanism can ensure the full contact of hydrogen sulfide and nitrate in the wastewater and promote the progress of the reaction. The air supply pipe is usually arranged at the bottom of the tank body to ensure the oxygen content during the reaction process.

[0004] However, the existing denitrification treatment devices still have the following deficiencies when in use:

[0005] The air supply pipe is generally fixedly installed on the inner bottom surface of the tank body. The oxygen provided by the fixed air supply pipe is unevenly distributed, and there may be dead zones and oxygen concentration gradients in the tank body, which affects the performance of the denitrification treatment device. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a denitrification treatment device to solve the problems raised in the above background technique.

[0007] The purpose of the utility model can be realized by the following technical solutions:

[0008] A denitrification treatment device includes a reaction tank body. A support mechanism is fixedly connected to the periphery of the reaction tank body near the bottom. A sewage discharge pipe is fixedly connected to the bottom of the periphery of the reaction tank body in a through manner, and a gate valve is installed in the sewage discharge pipe; a motor is fixedly installed at the center position of the bottom surface of the reaction tank body. The output shaft end of the motor rotates through the reaction tank body to the inside of the reaction tank body. A thrust bearing wrapped around the output shaft of the motor is fixedly installed on the inner bottom surface of the reaction tank body. A turntable is fixedly installed on the top surface of the thrust bearing. The outer extension of the turntable is in sliding contact with the inner wall of the reaction tank body, and the center position of the bottom surface of the turntable is fixedly connected to the output shaft end of the motor;

[0009] Aeration components are fixedly installed on the top surface of the turntable. The top ends of the aeration components extend above the reaction tank body and are rotatably and penetratingly connected to air guiding components.

[0010] Furthermore, the aeration component includes a stirring shaft. The stirring shaft is of a hollow structure, and the top end of the stirring shaft is an open structure. The top end of the stirring shaft extends above the reaction tank body and is connected to the air guiding component. The bottom end of the stirring shaft is fixedly installed at the central position on the top surface of the turntable.

[0011] A plurality of aeration pipes that are circumferentially arrayed around the axis of the stirring shaft are fixedly connected to the periphery of the stirring shaft in a penetrating manner near its bottom end. A plurality of supports for limiting and supporting the aeration pipes are arranged between the aeration pipes and the top surface of the turntable.

[0012] Furthermore, a plurality of stirring blades are fixedly installed on the periphery of the stirring shaft and are arranged in the reaction tank body.

[0013] Furthermore, the air guiding component includes an aeration duct. One end of the aeration duct is fixedly installed with a rotating pipe connector. The end of the rotating pipe connector away from the aeration duct is rotatably connected to the top end of the stirring shaft. The aeration duct is rotatably and penetratingly connected to the stirring shaft through the rotating pipe connector. The end of the aeration duct away from the rotating pipe connector is connected to an external aeration pump.

[0014] Furthermore, a limiting component for restricting the rotation change of the aeration duct around the axis of the stirring shaft is fixedly installed on the top surface of the reaction tank body. The limiting component includes a support pillar fixedly installed on the top surface of the reaction tank body. The top end of the support pillar is fixedly installed with a U-shaped limiting seat that is clamped around the periphery of the lower part of the aeration duct.

[0015] Furthermore, a stabilizing component is fixedly installed on the top surface of the reaction tank body. The stabilizing component includes a rotating bearing located directly above the reaction tank body, and the rotating bearing is sleeved around the periphery of the stirring shaft. A plurality of support rods are fixedly connected between the outer side surface of the outer ring of the rotating bearing and the top surface of the reaction tank body.

[0016] Furthermore, the support mechanism includes a support ring fixedly installed on the periphery of the reaction tank body. A plurality of support feet that are circumferentially arrayed around the axis of the reaction tank body are fixedly connected to the outer side surface of the support ring.

[0017] The beneficial effects of the present utility model:

[0018] Multiple aeration pipes rotate around the axis of the stirring shaft as the turntable rotates, so that the multiple aeration pipes perform circumferential dynamic aeration at the bottom of the reaction tank body, effectively alleviating the problems that dead zones may appear in the reaction tank body and oxygen concentration gradients may occur, which affect the performance of the denitrification treatment device. At the same time, the dynamic aeration action of the aeration pipes cooperates with the stirring action of the stirring blades to further improve the mixing effect of sulfate-reducing bacteria in the wastewater, which is beneficial to improving the working performance of the device. Brief Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 is a three-dimensional schematic diagram of the overall structure of the present invention;

[0021] Figure 2 is a three-dimensional schematic diagram of the connection relationship between the aeration pipe and the stirring shaft in the present invention;

[0022] Figure 3 is Figure 2 the enlarged view of part A in

[0023] Among them, the reference numerals are as follows:

[0024] 1 - reaction tank body, 2 - support ring, 3 - support leg, 4 - motor, 5 - sewage pipe, 6 - stirring shaft, 7 - rotating bearing, 8 - support rod, 9 - rotating pipe connector, 10 - aeration duct, 11 - support column, 12 - U-shaped limit seat, 13 - turntable, 14 - aeration pipe, 15 - support, 16 - stirring blade. Detailed Embodiment

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0026] Embodiment 1:

[0027] Please refer to Figures 1 to 3, in the embodiment of the present utility model, a denitrification treatment device includes a reaction tank body 1. A support mechanism is fixedly connected to the periphery of the reaction tank body 1 near the bottom. A sewage discharge pipe 5 is fixedly connected to the bottom of the periphery of the reaction tank body 1 in a through manner, and a gate valve is installed in the sewage discharge pipe 5. A motor 4 is fixedly installed at the center of the bottom surface of the reaction tank body 1. The output shaft end of the motor 4 rotates through the reaction tank body 1 to the inside of the reaction tank body 1. A thrust bearing that wraps around the output shaft of the motor 4 is fixedly installed on the inner bottom surface of the reaction tank body 1. A turntable 13 is fixedly installed on the top surface of the thrust bearing. The outer extension of the turntable 13 is in sliding contact with the inner wall of the reaction tank body 1. A fixed connection is provided between the center position of the bottom surface of the turntable 13 and the output shaft end of the motor 4;

[0028] An aeration assembly is fixedly installed on the top surface of the turntable 13. The top end of the aeration assembly extends above the reaction tank body 1 and is rotatably connected through a through connection with a gas guiding assembly.

[0029] Among them, the aeration assembly includes a stirring shaft 6. The stirring shaft 6 is of a hollow structure, and the top end of the stirring shaft 6 is an open structure. The top end of the stirring shaft 6 extends above the reaction tank body 1 and is connected to a gas guiding assembly. The bottom end of the stirring shaft 6 is fixedly installed at the center position on the top surface of the turntable 13;

[0030] A plurality of aeration pipes 14 that are circumferentially arrayed around the axis of the stirring shaft 6 are fixedly connected to the periphery of the stirring shaft 6 in a through manner near its bottom end. A plurality of supports 15 for limiting and supporting the aeration pipes 14 are provided between the aeration pipes 14 and the top surface of the turntable 13.

[0031] Among them, a plurality of stirring blades 16 are also fixedly installed on the periphery of the stirring shaft 6 and are arranged in the reaction tank body 1.

[0032] Among them, the gas guiding assembly includes an aeration duct 10. A rotating pipe connector 9 is fixedly installed at one end of the aeration duct 10. The end of the rotating pipe connector 9 away from the aeration duct 10 is rotatably connected to the top end of the stirring shaft 6. The aeration duct 10 is rotatably connected to the stirring shaft 6 in a through manner through the rotating pipe connector 9. The end of the aeration duct 10 away from the rotating pipe connector 9 is connected to an external aeration pump.

[0033] Among them, a limiting component for restricting the rotation change of the aeration conduit 10 with the axis of the stirring shaft 6 as the axis is fixedly installed on the top surface of the reaction tank body 1. The limiting component includes a support column 11 fixedly installed on the top surface of the reaction tank body 1, and a U-shaped limiting seat 12 fixedly installed at the top of the support column 11 and clamped around the lower part of the aeration conduit 10. Through the arrangement of the support column 11 and the U-shaped limiting seat 12 in the limiting component, the aeration conduit 10 can be supported, thereby improving the connection stability between the rotating pipe connector 9 and the stirring shaft 6. At the same time, it can prevent the rotation movement of the stirring shaft 6 from causing the aeration conduit 10 to swing and shake, thereby improving the working stability of the present utility model.

[0034] Among them, the support mechanism includes a support ring 2 fixedly installed on the periphery of the reaction tank body 1, and a plurality of support feet 3 fixedly connected to the outer side surface of the support ring 2 and circumferentially arrayed around the axis of the reaction tank body 1.

[0035] When the present utility model is in use:

[0036] When injecting wastewater into the reaction tank body 1, the motor 4 is started. The motor 4 drives the turntable 13 to rotate, the turntable 13 drives the stirring shaft 6 to rotate, and the stirring shaft 6 drives the stirring blades 16 to stir the wastewater, thereby promoting the mixing efficiency and uniformity of the wastewater and sulfate-reducing bacteria. At the same time, an external aeration pump supplies air into the stirring shaft 6 through the aeration conduit 10, so that a plurality of aeration pipes 14 conduct aeration and oxygen supply at the bottom of the reaction tank body 1. During the process, the plurality of aeration pipes 14 also rotate around the axis of the stirring shaft 6 as the turntable 13 rotates, so that the plurality of aeration pipes 14 conduct circumferential dynamic aeration at the bottom of the reaction tank body 1, effectively alleviating the problems that the reaction tank body 1 may have dead zones and oxygen concentration gradients, which affect the performance of the denitrification treatment device. At the same time, the dynamic aeration action of the aeration pipes 14 in cooperation with the stirring action of the stirring blades 16 can further improve the mixing effect of the wastewater and sulfate-reducing bacteria, which is beneficial to improving the working performance of the device.

[0037] Embodiment 2:

[0038] Please refer to Figure 1 On the basis of Embodiment 1, a stabilizing component is fixedly installed on the top surface of the reaction tank body 1. The stabilizing component includes a rotating bearing 7 located directly above the reaction tank body 1, and the rotating bearing 7 is sleeved around the outer periphery of the stirring shaft 6. A plurality of support rods 8 are fixedly connected between the outer side surface of the outer ring of the rotating bearing 7 and the top surface of the reaction tank body 1.

[0039] Through the arrangement of the rotating bearing 7 and the support rods 8, the coaxiality of the stirring shaft 6 is limited at the upper part of the stirring shaft 6, ensuring the stability of the stirring shaft 6 during rotation and further improving the stability of the present utility model during operation.

[0040] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above-mentioned embodiments, and what is described in the above-mentioned embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed.

Claims

1. A denitrification treatment device, comprising a reaction tank body (1), a support mechanism is fixedly connected to the periphery of the reaction tank body (1) near the bottom, a sewage discharge pipe (5) is fixedly connected to the periphery of the reaction tank body (1) in a penetrating manner at the bottom, and a gate valve is installed in the sewage discharge pipe (5); characterized in that, A motor (4) is fixedly installed at the center position of the bottom surface of the reaction tank body (1). The shaft end of the output shaft of the motor (4) rotates through the reaction tank body (1) to the inside of the reaction tank body (1). A thrust bearing wrapped around the output shaft of the motor (4) is fixedly installed on the inner bottom surface of the reaction tank body (1). A turntable (13) is fixedly installed on the top surface of the thrust bearing. The outer extension of the turntable (13) is in sliding contact with the inner wall of the reaction tank body (1). A fixed connection is provided between the center position of the bottom surface of the turntable (13) and the shaft end of the output shaft of the motor (4). An aeration assembly is fixedly installed on the top surface of the turntable (13). The top end of the aeration assembly extends above the reaction tank body (1) and is rotatably connected through a through-type connection to a gas guide assembly.

2. The denitrification treatment device according to claim 1, characterized in that, The aeration assembly includes a stirring shaft (6). The stirring shaft (6) has a hollow structure, and the top end of the stirring shaft (6) is an open structure. The top end of the stirring shaft (6) extends above the reaction tank body (1) and is connected to the gas guide assembly. The bottom end of the stirring shaft (6) is fixedly installed at the center position on the top surface of the turntable (13). A plurality of aeration pipes (14) circumferentially arrayed about the axis of the stirring shaft (6) are fixedly connected in a through-type manner at a position near the bottom end of the outer periphery of the stirring shaft (6). A plurality of supports (15) for limiting and supporting the aeration pipes (14) are provided between the aeration pipes (14) and the top surface of the turntable (13).

3. The denitrification treatment device according to claim 2, wherein A plurality of stirring blades (16) arranged in the reaction tank body (1) are also fixedly installed on the outer periphery of the stirring shaft (6).

4. The denitrification treatment device according to claim 2, wherein, The gas guide assembly includes an aeration duct (10). One end of the aeration duct (10) is fixedly installed with a rotating pipe connector (9). The end of the rotating pipe connector (9) away from the aeration duct (10) is rotatably connected to the top end of the stirring shaft (6). The aeration duct (10) is rotatably connected in a through-type manner with the stirring shaft (6) through the rotating pipe connector (9). The end of the aeration duct (10) away from the rotating pipe connector (9) is connected to an external aeration pump.

5. The denitrification treatment device according to claim 4, wherein, A limiting assembly for restricting the rotation change of the aeration duct (10) about the axis of the stirring shaft (6) is fixedly installed on the top surface of the reaction tank body (1). The limiting assembly includes a support column (11) fixedly installed on the top surface of the reaction tank body (1). A U-shaped limiting seat (12) clamped around the lower part of the aeration duct (10) is fixedly installed at the top end of the support column (11).

6. The denitrification treatment device according to claim 2, wherein A stabilizing assembly is fixedly installed on the top surface of the reaction tank body (1). The stabilizing assembly includes a rotating bearing (7) located directly above the reaction tank body (1), and the rotating bearing (7) is sleeved around the outer periphery of the stirring shaft (6). A plurality of support rods (8) are fixedly connected between the outer side surface of the outer ring of the rotating bearing (7) and the top surface of the reaction tank body (1).

7. The denitrification treatment device according to claim 1, wherein The support mechanism includes a support ring (2) fixedly installed on the outer periphery of the reaction tank body (1). A plurality of supporting feet (3) circumferentially arrayed about the axis of the reaction tank body (1) are fixedly connected to the outer side surface of the support ring (2).

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