CN219567722U

CN219567722U - Aeration device and sewage purification system

Info

Publication number: CN219567722U
Application number: CN202320121400.2U
Authority: CN
Inventors: 曾庆军; 毕世明
Original assignee: CCCC Fourth Harbor Engineering Institute Co Ltd
Current assignee: CCCC Fourth Harbor Engineering Institute Co Ltd
Priority date: 2023-01-30
Filing date: 2023-01-30
Publication date: 2023-08-22
Anticipated expiration: 2033-01-30

Abstract

The utility model discloses an aeration device and a sewage purification system, wherein the aeration device comprises: the aeration pipes are provided with a plurality of aeration openings, the aeration openings are sequentially distributed along the circumferential direction, and each aeration opening of each aeration pipe is arranged along the same direction towards one side of the aeration opening on the other adjacent aeration pipe. Can drive sewage to rotate through aeration flow, save the energy consumption and improve the aeration effect simultaneously. The utility model is applied to the field of sewage treatment equipment.

Description

Aeration device and sewage purification system

Technical Field

The utility model relates to the field of sewage treatment equipment, in particular to an aeration device and a sewage purification system.

Background

The active sludge process is one kind of sewage treating process with high efficiency, and the main principle is to inject high active sludge into sewage purifying tank and to aerate the sewage to reach sewage purifying effect. In the conventional sewage purification process by the activated sludge method, the treatment water of the purification tank is discharged into the precipitation tank, and then part of the precipitate of the precipitation tank is directly conveyed to the purification tank and used as activated sludge, so that BAP (organic matters produced by microbial metabolism, biomass Associated Products) and UAP (organic matters released by microbial death, utilizing Associated Products) generated in a large amount of aeration tanks flow back into the aeration tanks along with the organic matters in the sewage, thereby generating a large amount of surplus sludge. At present, the problem is not solved well.

In the sewage aeration process, if the aeration quantity is too small, the dissolved oxygen in the water is insufficient, and biological bacteria cannot normally survive, so that the sludge activity is inhibited, the nitrification is insufficient, the ammonia nitrogen exceeds the standard, and the water quality of the effluent is affected. On the other hand, too much aeration of sewage (overexposure) can produce similar phenomena. This is because overexposure can result in high nitrification in the aeration tank, which can result in too high nitrate concentrations in the wastewater mixture. And a large amount of nitrogen and ammonia gas are generated in the tank due to denitrification, meanwhile, the sludge is aged at an accelerated speed, the dead sludge is decomposed excessively and floats upwards, and a large amount of white small foam exists. Meanwhile, overexposure can lead to increased energy consumption of the sewage aeration blower, and unnecessary energy consumption is caused.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the aeration device which can drive sewage to rotate through aeration flow, thereby saving energy consumption and improving aeration effect.

An aeration device according to an embodiment of the first aspect of the present utility model includes:

the aeration pipes are provided with a plurality of aeration openings, the aeration openings are sequentially distributed along the circumferential direction, and each aeration opening of each aeration pipe is arranged along the same direction towards one side of the aeration opening on the other adjacent aeration pipe.

The aeration device according to the embodiment of the first aspect of the utility model has at least the following beneficial effects:

1. when the aeration pipe is placed at the bottom of the aeration tank for aeration, air flow sprayed out from the aeration port of the aeration pipe is emitted along the circumferential direction to drive liquid in the aeration tank to rotate along the circumferential direction so as to drive sewage in the aeration tank to integrally rotate, so that the aeration flow is fully contacted with the sewage, oxygen can be fully dissolved into the sewage, the dissolution efficiency is higher, an additional rotation disturbance device is not needed, and the energy is saved;

2. when the aeration pipe is used, the aeration flow floats upwards due to the buoyancy action air flow of air in water to form spiral air flow, and finally a vortex is formed in the aeration tank, so that the speed of the aeration flow can be judged by observing the size of the vortex, the aeration flow is conveniently adjusted, the aeration amount is located in a reasonable interval, and the sewage aeration effect is further improved.

According to some embodiments of the utility model, the central axis of the aeration port is arranged in the same direction as the corresponding circular tangent line.

According to some embodiments of the utility model, an angle formed between the central axis of the aeration port and the horizontal plane is alpha, and an angle between the central axis of the aeration port and the plane of the corresponding circular tangent line is beta.

According to some embodiments of the utility model, the aeration tubes are sequentially spaced apart in the circumferential direction.

A sewage purification system according to an embodiment of the second aspect of the present utility model includes the aeration device according to the embodiment of the first aspect.

The sewage purification system according to the second aspect of the embodiment of the present utility model has at least the following advantageous effects: can be efficiently aerated, and the energy consumption of aeration is lower.

According to some embodiments of the utility model, the pretreatment tank;

the aeration tank is communicated with the pretreatment tank, the aeration device is arranged in the tank, and the aeration device is used for being communicated with the air supply device;

the sedimentation tank is communicated with the aeration tank;

and the incubator is communicated with the precipitation tank and the aeration tank.

According to some embodiments of the utility model, a mud guard is arranged in the sedimentation tank for assisting in sedimentation of the sludge.

According to some embodiments of the utility model, the aeration tank has a spherical or cylindrical shape.

According to some embodiments of the utility model, the incubator further comprises a control assembly, wherein a water level sensor is arranged in the incubator and is electrically connected with the control assembly, and the control assembly is used for controlling the incubator to convey liquid into the aeration tank.

According to some embodiments of the utility model, the control device is a control panel integrated with a programmable controller, a microcontroller.

According to some embodiments of the utility model, the aeration device is provided in the incubator.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The utility model is further described with reference to the accompanying drawings and examples, in which:

fig. 1 is a schematic view showing the structure of an aeration apparatus according to an embodiment of the present utility model;

fig. 2 is a schematic flow chart of a sewage purification system according to an embodiment of the present utility model.

Reference numerals:

an aerator pipe 100; an aeration port 110;

a pretreatment tank 200;

an aeration tank 300; a gas supply device 310;

a precipitation tank 400;

an incubator 500; the water level sensor senses 510.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the direction or positional relationship indicated with respect to the description of the orientation, such as up, down, etc., is based on the direction or positional relationship shown in the drawings, is merely for convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a plurality means one and more, and a plurality means two and more. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1, an aeration apparatus according to an embodiment of the present utility model includes:

the aeration pipes 100 are provided with a plurality of aeration openings 110, the aeration openings 110 are distributed in sequence along the circumferential direction, and the aeration opening 110 of each aeration pipe 100 faces to one side of the aeration opening 110 on the other adjacent aeration pipe 100 along the same direction.

The plurality of air vents 110 are sequentially distributed along the circumferential direction, so that all the air vents 110 are formed into a circle along the connecting line of the circumferential direction.

It should be appreciated that when the aeration pipe 100 is placed at the bottom of the aeration tank 300 to perform aeration, the air flow sprayed from the aeration port 110 by the aeration pipe 100 is emitted along the circumferential direction to drive the liquid in the aeration tank 300 to rotate along the circumferential direction so as to drive the sewage in the aeration tank 300 to integrally rotate, so that the aeration flow is fully contacted with the sewage, oxygen can be fully dissolved into the sewage, the dissolution efficiency is higher, and an additional rotation disturbance device is not needed, so that the energy is saved;

it should be appreciated that when the aeration pipe 100 is in use, the aeration flow floats upwards due to the buoyancy of air in water to form a spiral airflow, and finally forms a vortex in the aeration tank 300, and the speed of the aeration flow can be judged by observing the vortex, so that the aeration flow is conveniently adjusted, the aeration amount is located in a reasonable interval, and the sewage aeration effect is improved.

Wherein, the aeration openings 110 of each aeration tube 100 are arranged along the same direction toward the side where the aeration openings 110 on another adjacent aeration tube 100 are located, wherein the same direction means that: all aeration ports 110 are oriented in the same direction in the clockwise or counterclockwise direction so that the direction of the air flow emitted therefrom is in the clockwise or counterclockwise direction to drive the sewage to rotate by the aeration flow.

Referring to fig. 1, the central axis of the aeration port 110 is disposed in the same direction as the corresponding circular tangent line.

Wherein, the corresponding circular tangent line refers to: the circle refers to the circle formed by the aeration openings 110, and a radial line passes through the position of the aeration openings 110 and the center of the circle, and a tangent line corresponding to the radial line is a corresponding circle tangent line.

It should be appreciated that when the central axis of the aeration port 110 is parallel to the circular tangent line, the aeration flow ejected from the aeration port can be directly ejected along the circular tangent line direction, the aeration flow can better apply a rotating force to the sewage, and no additional component force is generated to waste the thrust of the aeration flow to the sewage, so that the sewage can better rotate to form a vortex.

In some embodiments of the present utility model, the angle formed between the central axis of the aeration port 110 and the horizontal plane is α, and the angle between the central axis of the aeration port and the plane of the corresponding circular tangent line is β.

It should be understood that when an included angle is formed between the central axis of the aeration port 110 and the horizontal plane, the thrust of the aeration port 110 to the sewage can be decomposed into a force along the radial direction of the circle and a force along the tangential direction of the circle, wherein only the force along the tangential direction of the circle can push the sewage to rotate, the energy consumed by the sewage to rotate is higher, and the formed vortex is smaller.

In some embodiments of the present utility model, the aeration tubes 100 are sequentially spaced apart in the circumferential direction.

Specifically, the aeration pipes 100 may be separately disposed and connected to the air compression pump through separate pipes, or the aeration pipes 100 are connected to the same central circular pipe, and the aeration pipes 100 are uniformly spaced around the axis of the central circular pipe, and the central circular pipe is connected to the air compression pump.

It should be appreciated that when the aeration pipes 100 are sequentially and alternately distributed in the circumferential direction, the installation of the aeration pipes 100 is simpler, and only the aeration pipes 100 are required to be placed in the circumferential direction, and then the body aeration openings 110 are required to be adjusted to face clockwise or anticlockwise. However, when the aeration pipes 100 are linearly and alternately arranged in the same direction, each aeration pipe 100 has a corresponding fixing position to arrange the aeration openings 110 in the clockwise or counterclockwise direction, which is complicated to install and inconvenient to use.

Referring to fig. 2, a sewage purification system according to an embodiment of the second aspect of the present utility model includes an aeration device according to an embodiment of the first aspect.

It is understood that the aeration can be performed efficiently, and the energy consumption of the aeration is lower.

Referring to fig. 2, the sewage purification system further includes: a pretreatment tank 200;

an aeration tank 300 communicated with the pretreatment tank 200, wherein an aeration device is arranged in the tank and is used for being communicated with an air supply device 310;

a precipitation tank 400 in communication with the aeration tank 300;

the incubator 500 communicates with the precipitation tank 400 and the aeration tank 300.

Wherein the sewage refers to sewage containing organic matters, such as domestic sewage, factory drainage and the like.

It should be understood that the sewage first enters the pretreatment tank 200 to be precipitated, the pretreated sewage enters the aeration tank 300, pollutants such as organic matters are eliminated by using the metabolism of microorganisms such as aerobic bacteria in the aeration tank 300, the sewage enters the precipitation tank 400 after being purified by the aeration tank 300, first supernatant and first precipitated sludge are formed after precipitation, a part of the first supernatant and the first precipitated sludge enter the incubator 500 to be subjected to activation treatment, and the generated activated sludge is supplied to the aeration tank 300 to realize the purification of the sewage.

Wherein raw sewage to be purified first flows into the pretreatment tank 200, and the flow rate in the pretreatment tank 200 is reduced, and the sewage is separated from the sludge.

Wherein, the aeration tank 300 is composed of a tank body, an aeration device and an air supply device 310. The pretreated sewage and activated sludge flow into the aeration tank 300, and the mixed liquor is called a first mixed liquor. The aeration device is composed of the aeration pipe 100 of the first aspect, and the air supply device 310 is an air compression pump. The aeration pipe 100 is disposed in the aeration tank 300, and an air compression pump communicates with the aeration pipe 100 and supplies air into the tank.

Wherein the first mixed liquid purified by the aeration tank 300 flows into the precipitation tank 400, and forms a first supernatant and a first precipitated sludge after precipitation in the precipitation tank 400. A part of the first precipitated sludge enters the incubator 500, and the remaining part of the first precipitated sludge remains as activated sludge in the aeration tank 300, and the remaining first precipitated sludge is completely removed and discarded.

Wherein the incubator 500 is composed of a tank body and an aeration apparatus. The second supernatant and the second precipitated sludge are formed in the incubator 500 by precipitation, and both form a second mixed solution, and a part of the second supernatant and the second precipitated sludge remains in the incubator 500, and the second supernatant is discharged as purified water.

Wherein, incubator 500 can further cultivate the microorganism in the second mixed solution, and after microorganism breeds in a large number, carries it in aeration tank 300 again, and its incidental mud volume significantly reduces, has reduced environmental load, simultaneously, has improved the precipitation performance of mixed solution, is favorable to improving water purification efficiency.

In some embodiments of the present utility model, a mud guard is provided in the settling tank 400 to assist in settling the sludge.

It should be appreciated that by disposing the mud guard in the settling tank 400, when sewage flows into the settling tank 400, the mud in the sewage can collide with the mud guard, so that the sewage is difficult to flow together with the sewage, and the sewage is settled in the settling tank 400, so as to quickly settle the floating mud in the sewage.

In some embodiments of the present utility model, the in-tank shape of aeration tank 300 is a sphere or cylinder.

Wherein, when the shape in the tank is a cylinder, the aeration device is arranged on one end surface of the cylinder.

It is understood that when sewage rotates to form a vortex, the ball or the cylinder can not collide with the sewage excessively to cause vortex energy loss, compared with the aeration tank 300 of the rectangular body, the formation of the vortex is more facilitated, and after the vortex is formed, the sewage and the sludge can be fully mixed, so that the aeration effect is improved.

Referring to fig. 2, the incubator 500 further comprises a control assembly, wherein a water level sensor is arranged in the incubator 500 and is electrically connected with the control assembly, and the control assembly is used for controlling the incubator 500 to convey liquid into the aeration tank 300.

It should be understood that when the water level sensor 510 senses that the water level of the mixed solution in the incubator 500 reaches the first preset water level value, the control component controls the water pump to operate to convey the activated sludge to the aeration tank 300, and when the water level is reduced to the second preset water level value, the water pump stops operating, wherein the first preset water level value is higher than the second preset water level value, so as to control the water level in the incubator 500, and convey the activated sludge to the aeration tank 300, so that microorganisms in the aeration tank 300 are more, pollutants such as organic matters can be sufficiently eliminated, and the aeration effect is better.

Specifically, the control device is a control panel integrated with a programmable controller and a microcontroller.

Referring to fig. 2, an aeration device is provided in the incubator 500.

It should be appreciated that the aeration device within the incubator 500 allows for better survival of microorganisms within the incubator 500 for activated sludge and use in the aeration tank 300.

Wherein a nutrient solution may be added to the incubator 500 to further culture the microorganisms.

With reference to fig. 2, the following description is given by way of example with reference to a specific embodiment, and it should be understood that the following is only for aiding in understanding the present solution, and is not to be construed as limiting the present solution in any way.

In the pretreatment process of the pretreatment tank 200, the raw sewage W0 enters the pretreatment tank 200 and then is kept stand to separate sewage from sludge, and the separated sludge S1 is precipitated on the bottom sludge of the pretreatment tank 200.

In the 1 st aeration process, first, sewage W1 and activated sludge S1 formed after pretreatment flow into the aeration tank 300, and air is injected into the aeration tank 300 through the aeration device, which is driven by the air compression pump and supplies air into water through the air diffusion pipe.

The activated sludge S1 contains a large amount of microorganisms including aerobic microorganisms, and the organic matters in the mixed liquor L1 are decomposed by the oxidation of the microorganisms and form a lump-shaped precipitate together with the above microorganisms.

In the solid-liquid separation process, firstly, the mixed solution L1 purified by the aeration tank 300 enters a precipitation tank 400, then, the block solid soil in the mixed solution L1 is precipitated to the bottom of the tank body by standing, a supernatant W2 and precipitated sludge S2 are formed, the supernatant W2 is purified clear water and is directly discharged, and the precipitated sludge S2 contains aerobic microorganisms and BAP and UAP.

In the aeration process 2, first, a part of the supernatant W2 and the precipitated sludge S2 (forming the mixed solution L2) formed in the precipitation tank 400 are introduced into the incubator 500, and the aeration apparatus of the incubator 500 aerates the mixed solution L2, so that microorganisms capable of decomposing BAP and UAP in the mixed solution L2 are propagated and activated while metabolizing BAP and UAP.

In the aeration process 2, nutrient substances can be provided for microorganisms by adding nutrient solution or sludge S0 into the mixed solution L2 in the incubator 500 so as to promote the cultivation of microorganisms.

In the supplying process, after the mixed liquor L2 is aerated and cultured in the incubator 500, the formed mixed liquor containing high activated sludge is referred to as L3, and is supplied to the aeration tank 300 by the water pump, and it should be noted that only a part of the produced mixed liquor L3 is supplied as activated sludge to the aeration tank 300 in the supplying process. In the 2 nd aeration process S4 and the supply process S5, the supernatant W2 and the precipitated sludge S2 in the precipitation tank 400 need to be repeatedly and continuously injected into the incubator 500 in order to be the amount of water and the amount of sludge therein.

The supply process S5 is implemented by transmitting an operation signal to the water feeding pump to operate when the water level sensor in the incubator 500 senses that the water level of the mixed liquid L3 reaches a specific value a, and pumping the mixed liquid L3 to the aeration tank 300, whereas, transmitting a stop operation signal to the water feeding pump to stop operating when the water level sensor senses that the water level drops to a specific value B. Wherein the specific value a is larger than the characteristic value B.

The conventional activated sludge process is to directly pass the precipitate of the precipitation tank 400 to the aeration tank 300 to be used as activated sludge, so that a large amount of BAP and UAP generated in the aeration tank 300 are returned to the aeration tank 300 together with organic matters in sewage, thereby generating a large amount of surplus sludge. Meanwhile, the existence of BAP and UAP can slow down the sedimentation process of solid substances, so that the sewage treatment efficiency is reduced. In the proposal provided by the utility model, the sediment S3 generated by the sedimentation tank 400 is injected into the aeration tank 300 after being aerated and cultured by the incubator 500, so that a large amount of BAP and UAP generated in the sedimentation tank 400 are decomposed and consumed in the incubator 500, the amount of sludge generated in the whole water purification process is greatly reduced, the environmental load is reduced, and meanwhile, the reduction of BAP and UAP improves the sedimentation performance of the mixed solution, thereby being beneficial to improving the water purification efficiency. In addition, the high-activity sludge produced by culture greatly improves the water purifying effect of the whole system.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims

1. An aeration device, comprising:

2. An aeration device according to claim 1, wherein: the central axis of the aeration port and the corresponding circular tangent line are arranged in the same direction.

3. An aeration device according to claim 1, wherein: the angle formed between the central axis of the air exposure port and the horizontal plane is alpha, and the angle between the central axis of the air exposure port and the plane of the corresponding circular tangent line is beta.

4. An aeration device according to claim 1, wherein: the aeration pipes are sequentially distributed at intervals along the circumferential direction.

5. A sewage purification system, characterized in that: an aeration device comprising any one of claims 1 to 4.

6. The wastewater purification system of claim 5, wherein:

a pretreatment tank;

the sedimentation tank is communicated with the aeration tank;

7. The wastewater purification system of claim 6, wherein: and a mud guard is arranged in the sedimentation tank and is used for assisting in sediment of the sludge.

8. The wastewater purification system of claim 6, wherein: the shape of the aeration tank is sphere or cylinder.

9. The wastewater purification system of claim 6, wherein: the device also comprises a control assembly, wherein a water level sensor is arranged in the incubator and is electrically connected with the control assembly, and the control assembly is used for controlling the incubator to convey liquid to the aeration tank.

10. The wastewater purification system of claim 6, wherein: the aeration device is arranged in the incubator.