Micro-aerobic aeration stirring device for nitrosation tank

Abstract

The utility model belongs to the technical field of sewage treatment, and particularly relates to a nitrosation tank micro-aerobic aeration stirring device which comprises a nitrosation tank, an aeration stirring device is arranged in the nitrosation tank, the aeration stirring device comprises an aeration stirring unit and a filtering unit, the aeration stirring unit is arranged in the nitrosation tank, and the filtering unit is arranged in the nitrosation tank. And the distance is arranged above the nitrosation tank. According to the micro-aerobic aeration stirring device for the nitrosation tank, the aeration stirring unit and two-stage jet aeration are arranged, so that the device can suck more air and increase the absorbable oxygen content, and the mixing action of the mixing cavity is favorable for driving treated wastewater in a region, and is favorable for dispersing bubbles, enhancing gas-liquid mixing and improving the oxygen absorption rate; the convection and mixing effects of the water body are enhanced through the outflow pressure and speed of the pulse jet flow, and the problems of high energy consumption, non-uniform aeration, difficulty in controlling the dissolved oxygen level and the like existing in an aeration stirring device in a nitrosation tank in the background technology are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a micro-oxygen aeration and stirring device for a nitrite pool. Background Art

[0002] The nitrification tank is an important part of the sewage treatment process, which is mainly responsible for converting ammonia nitrogen (NH4+) into nitrite nitrogen (NO2-). This process is crucial for the subsequent denitrification process. The application of micro-aerobic aeration and stirring devices in nitrification tanks is aimed at providing sufficient dissolved oxygen to support the metabolic activities of microorganisms, while avoiding energy consumption caused by excessive aeration and enhanced activity of NOB (nitrite oxidizing bacteria), which is not conducive to the nitrification process.

[0003] The current aeration and stirring devices in nitrification tanks have problems such as high energy consumption, uneven aeration, and difficulty in controlling dissolved oxygen levels.

[0004] For this reason, we urgently need to provide a micro-oxygen aeration and stirring device for a nitrite pool. Utility Model Content

[0005] The utility model aims to provide a micro-oxygen aeration stirring device for a nitrite pool, so as to solve the problems of high energy consumption, uneven aeration, difficulty in controlling dissolved oxygen level, etc. of the aeration stirring device in the nitrite pool proposed in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a micro-oxygen aeration and stirring device for a nitrification pool, comprising a nitrification pool, wherein an aeration and stirring device is arranged inside the nitrification pool.

[0007] The aeration and stirring device comprises an aeration and stirring unit and a filtering unit. The aeration and stirring unit is arranged inside the nitrification pool, and the filtering unit is arranged above the nitrification pool.

[0008] The aeration and stirring unit includes an autocoupled water inlet system, a negative pressure air dissolving device, a negative pressure air suction device, an inlet distribution network, a negative pressure mixing device, installation pipe fittings, a network support device and an air inlet pipe. The autocoupled water inlet system is installed inside the nitrification tank, the negative pressure air dissolving device is connected to the left side of the autocoupled water inlet system, the negative pressure air suction device is connected to the top of the negative pressure air dissolving device, the inlet distribution network is connected to the left side of the negative pressure air suction device, the negative pressure mixing device is installed on both sides of the inlet distribution network, the installation pipe fittings are fixedly installed on the outside of the inlet distribution network, the network support device is fixedly installed at the bottom of the nitrification tank and the top is connected to the bottom of the inlet distribution network, and the air inlet pipe is installed on the top of the negative pressure air suction device.

[0009] Preferably, a filter unit, a shell, a filter screen and a handle are provided inside the air intake pipe. The shell is installed above the air intake pipe, the filter screen is fixedly installed at the bottom of the shell, and the handle is fixedly installed at the top of the shell.

[0010] Preferably, the negative pressure mixing flow device is threadedly connected to the mounting pipe fitting, so as to facilitate connecting the negative pressure mixing flow device to both sides of the water inlet distribution pipe network.

[0011] Preferably, the water inlet distribution pipe network can evenly distribute the dissolved air water to each area of ​​the nitrification pool, ensuring uniform dissolved oxygen in each area of ​​the nitrification pool.

[0012] Preferably, the water inlet distribution pipe network can be made into a multi-layer structure to more flexibly adapt to pools of different depths.

[0013] Preferably, the negative pressure suction device can flexibly control the air intake of the system to meet the needs of the micro-oxygen environment in the nitrite tank.

[0014] Preferably, a sealing gasket is installed at the connection between the handle and the air inlet pipe, and the sealing gasket is used to seal the gap between the handle and the air inlet pipe to prevent unfiltered air from entering the air inlet pipe and clogging the air inlet pipe.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The micro-oxygen aeration and stirring device for the nitrite pool is provided with an aeration and stirring unit. Through two-stage jet aeration, the device can inhale more air and increase the absorbable oxygen content. The mixing action of the mixing chamber is conducive to driving the treated wastewater in the area, and is also conducive to bubble dispersion, enhancing gas-liquid mixing, and improving the oxygen absorption rate. The outflow pressure and speed of the pulse jet enhance the convection and mixing effects of the water body, thereby solving the problems of high energy consumption, uneven aeration, and difficulty in controlling the dissolved oxygen level in the aeration and stirring device in the nitrite pool proposed in the background technology.

[0017] 2. The micro-oxygen aeration and stirring device of the nitrification tank has a simple structure and is easy to install and maintain. The aeration volume can be adjusted according to actual needs to adapt to different treatment requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the nitrite tank of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the connection between the water inlet distribution pipe network and the negative pressure mixing flow device of the utility model;

[0021] Figure 4 It is a structural schematic diagram of the connection between the auto-coupling water inlet system and the negative pressure air suction device of the utility model;

[0022] Figure 5 This is a disassembled view of the connection between the air intake pipe and the filter screen of the utility model.

[0023] In the figure: 1. nitrite tank; 201. auto-coupled water inlet system; 202. negative pressure aeration device; 203. negative pressure suction device; 204. water inlet distribution network; 205. negative pressure mixing flow device; 206. installation pipe fittings; 207. network support device; 208. air inlet pipe; 301. shell; 302. filter screen; 303. handle; 4. sealing gasket. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-Figure 5 , the utility model provides a technical solution:

[0026] Embodiment 1:

[0027] A micro-oxygen aeration and stirring device for a nitrification pool comprises a nitrification pool 1, wherein the aeration and stirring device is arranged inside the nitrification pool 1.

[0028] The aeration and stirring device comprises an aeration and stirring unit and a filtering unit. The aeration and stirring unit is arranged inside the nitrification tank 1 , and the filtering unit is arranged above the nitrification tank 1 .

[0029] The aeration and stirring unit includes an autocoupled water inlet system 201, a negative pressure air dissolving device 202, a negative pressure air suction device 203, an inlet distribution network 204, a negative pressure mixing device 205, a mounting pipe 206, a network support device 207 and an air inlet pipe 208. The autocoupled water inlet system 201 is installed inside the nitrification tank 1 to provide water inlet to the device and water pressure in the system. The negative pressure air dissolving device 202 is connected to the left side of the autocoupled water inlet system 201. The gas is fully mixed with the pressure circulating water through negative pressure air suction and air dissolution. The negative pressure air suction device 203 is connected to the top of the negative pressure air dissolving device 202. The negative pressure air suction device 203 can flexibly control the air intake of the system to meet the needs of the micro-oxygen environment in the nitrification tank 1. The inlet distribution network 204 is connected to the left side of the negative pressure air suction device 203 to transport the dissolved air sewage to the relevant area of ​​the nitrification tank 1 as needed. The water distribution network 204 can be made into a multi-layer structure to more flexibly adapt to pools of different depths. The water inlet distribution network 204 can evenly distribute the dissolved air water to each area of ​​the nitrification pool 1, ensuring that the dissolved oxygen in each area of ​​the nitrification pool 1 is uniform. The negative pressure mixing flow device 205 is installed on both sides of the water inlet distribution network 204, and the flow rate change of the end nozzle device is used to generate a secondary negative pressure effect, which drives the flow of sewage in the area and enhances the dissolved air effect. The negative pressure mixing flow device 205 is threadedly connected to the installation pipe fitting 206, which is convenient for connecting the negative pressure mixing flow device 205 to both sides of the water inlet distribution network 204. The installation pipe fitting 206 is fixedly installed on the outside of the water inlet distribution network 204. The network support device 207 is fixedly installed at the bottom of the nitrification pool 1 and the top is connected to the bottom of the water inlet distribution network 204. The air intake pipe 208 is installed on the top of the negative pressure suction device 203.

[0030] Embodiment 2:

[0031] On the basis of the first embodiment: a filter unit, a shell 301, a filter screen 302 and a handle 303 are arranged inside the air inlet pipe 208, the shell 301 is installed above the air inlet pipe 208, the filter screen 302 is fixedly installed at the bottom of the shell 301, and the handle 303 is fixedly installed at the top of the shell 301.

[0032] Embodiment three:

[0033] On the basis of the second embodiment: a sealing gasket 4 is installed at the connection between the handle 303 and the air inlet pipe 208, and the sealing gasket 4 is used to seal the gap between the handle 303 and the air inlet pipe 208 to prevent unfiltered air from entering the air inlet pipe 208 and clogging the air inlet pipe 208.

[0034] When in use, the sewage is pressure-transported to the negative pressure dissolving device 202 through the autocoupled water inlet system 201. Due to the negative pressure effect generated in the negative pressure dissolving device 202 by the Bernoulli principle, the air above the sewage liquid surface enters the negative pressure dissolving device 202 through the negative pressure suction device 203. The sewage after the gas and liquid are fully mixed is transported to the nitrification tank 1 through the water inlet distribution pipe network 204, and the pressure is passed through the negative pressure mixing device 205 to generate negative pressure, which drives the surrounding water body to be stirred, and at the same time, oxygen is added to each area in the tank. When the gas enters the negative pressure suction device 203 through the air inlet pipe 208, the incoming gas is filtered by the filter 302 to prevent impurities in the gas from entering the negative pressure suction device 203 and clogging the negative pressure suction device 203.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A micro-oxygen aeration and stirring device for a nitrification tank, comprising a nitrification tank (1), characterized in that: The nitrification tank (1) is provided with an aeration and stirring device inside; The aeration and stirring device comprises an aeration and stirring unit and a filtering unit, wherein the aeration and stirring unit is arranged inside the nitrification tank (1), and the filtering unit is arranged above the nitrification tank (1); The aeration and stirring unit comprises an autocoupled water inlet system (201), a negative pressure air dissolving device (202), a negative pressure air suction device (203), a water inlet distribution pipe network (204), a negative pressure mixing flow device (205), a mounting pipe (206), a pipe network support device (207) and an air inlet pipe (208); the autocoupled water inlet system (201) is installed inside the nitrification tank (1); the negative pressure air dissolving device (202) is connected to the left side of the autocoupled water inlet system (201); and the negative pressure air suction device (203) is connected to the negative pressure The top of the aeration device (202) is connected to the left side of the negative pressure suction device (203). The negative pressure mixing device (205) is installed on both sides of the water inlet distribution network (204). The installation pipe (206) is fixedly installed on the outside of the water inlet distribution network (204). The network support device (207) is fixedly installed on the bottom of the nitrification tank (1) and the top is connected to the bottom of the water inlet distribution network (204). The air inlet pipe (208) is installed on the top of the negative pressure suction device (203).

2. A micro-oxygen aeration stirring device for a nitrite pool according to claim 1, characterized in that: The air intake pipe (208) is provided with a filter unit, a shell (301), a filter screen (302) and a handle (303) inside, the shell (301) is installed above the air intake pipe (208), the filter screen (302) is fixedly installed at the bottom of the shell (301), and the handle (303) is fixedly installed at the top of the shell (301).

3. A micro-oxygen aeration stirring device for a nitrite pool according to claim 1, characterized in that: The negative pressure mixing flow device (205) is threadedly connected to the installation pipe (206).

4. A micro-oxygen aeration stirring device for a nitrite pool according to claim 1, characterized in that: The water inlet distribution pipe network (204) can evenly distribute the dissolved air water to various areas of the nitrite tank (1).

5. A micro-oxygen aeration stirring device for a nitrite pool according to claim 1, characterized in that: The water inlet distribution pipe network (204) can be made into a multi-layer structure to more flexibly adapt to pools of different depths.

6. A micro-oxygen aeration and stirring device for a nitrite pool according to claim 1, characterized in that: The negative pressure air suction device (203) can flexibly control the air intake volume of the system.

7. A micro-oxygen aeration stirring device for a nitrite pool according to claim 2, characterized in that: A sealing gasket (4) is installed at the connection between the handle (303) and the air inlet pipe (208).

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