CN216549880U

CN216549880U - Advection formula air supporting pond

Info

Publication number: CN216549880U
Application number: CN202123244144.6U
Authority: CN
Inventors: 邓凤云
Original assignee: Shandong Hua Xue Environmental Protection & Technology Co ltd
Current assignee: Shandong Hua Xue Environmental Protection & Technology Co ltd
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-05-17
Anticipated expiration: 2031-12-22

Abstract

The utility model discloses a horizontal flow type air flotation tank, which belongs to the technical field of sewage treatment equipment and comprises a sedimentation tank and an air dissolving tank which are connected, wherein the sedimentation tank is provided with a water inlet and a first water outlet, and the sedimentation tank is internally provided with a first baffle; a gas dissolving pipe is arranged in the gas dissolving tank, a second baffle is arranged above the gas dissolving pipe, a slag scraping assembly is arranged above the second baffle, a sludge cavity is arranged below the slag scraping assembly, and a second water outlet is arranged below the sludge cavity; a cover plate is arranged above the gas dissolving pool, an air outlet pipeline is arranged on the cover plate, and the air outlet pipeline is connected with an activated carbon box; the utility model can effectively precipitate the impurities with larger particles and larger specific gravity in the sewage by utilizing the sedimentation tank and the first baffle plate inside the sedimentation tank; the treatment effect on suspended matters can be improved by utilizing the dissolved air pool and the second baffle plate in the dissolved air pool; the cover plate, the air outlet pipeline and the activated carbon box can be used for filtering air; improves the sewage treatment effect and is green and environment-friendly.

Description

Advection formula air supporting pond

Technical Field

The utility model relates to the technical field of sewage treatment equipment, in particular to a horizontal flow type air floatation tank.

Background

The horizontal flow type air floatation tank is a solid-liquid separation device commonly used in the sewage treatment industry, can effectively remove suspended matters, grease and colloid substances in sewage, and is one of main devices for sewage pretreatment.

The existing advection type air flotation tank mainly comprises a dissolved air pump, a tank body, a slag scraping assembly and the like. The dissolved air water can be generated under the action of the dissolved air pump and is released into the sewage through the dissolved air pipe in the pool body; when the pressure of the dissolved air water is reduced, the air in the dissolved air water can be released to form micro bubbles of 20-40um, and the micro bubbles can be combined with suspended matters in the sewage to ensure that the specific gravity of the suspended matters is smaller than that of the water and gradually float to the water surface to form scum; the scum scraping component on the water surface can scrape the floated scum into the sludge cavity; the sewage from which the suspended matters are removed can flow out from the lower part of the tank body.

However, because the impurities in the sewage are complex, especially some impurities with larger particles and larger specific gravity exist in the sewage, the impurities are often difficult to float under the action of the microbubbles, most of the impurities are precipitated at the bottom of the tank body, and a small part of the impurities are combined with the microbubbles and then suspended in the tank, so that the treatment effect of the sewage is influenced; meanwhile, a large amount of micro bubbles in the dissolved air can be directly discharged into the air, the micro bubbles can form toxic and harmful gas or peculiar smell gas when contacting with sewage, the ecological environment is influenced,

therefore, it is an urgent problem to solve at the present stage to design a advection type air flotation tank that can effectively remove the impurities with larger particles and larger specific gravity and can not directly discharge the toxic and harmful gases or the peculiar smell gases.

SUMMERY OF THE UTILITY MODEL

For the problems in the prior art, the utility model utilizes the sedimentation tank and the first baffle plate inside the sedimentation tank, so that impurities with larger particles and larger specific gravity in sewage can be effectively precipitated and prevented from entering the dissolved air tank; the gas dissolving pool and the second baffle plate in the gas dissolving pool can improve the combination time of the micro-bubbles and the suspended matters and improve the treatment effect on the suspended matters; the cover plate, the air outlet pipeline and the activated carbon box can be used for effectively filtering the gas, so that the discharged gas is not toxic or harmful or has peculiar smell; simple structure, convenient operation has improved the treatment effect to sewage to green.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a horizontal flow type air flotation tank which comprises a sedimentation tank and an air dissolving tank which are connected, wherein a water inlet is formed in one side of the sedimentation tank, which is far away from the air dissolving tank, a first water outlet is formed in one side of the sedimentation tank, which is connected with the air dissolving tank, a plurality of first baffle plates are arranged in the sedimentation tank, and the first baffle plates are inclined downwards along the direction close to the air dissolving tank; a dissolved air pipe is arranged in the dissolved air tank, a plurality of air outlet holes are formed in the dissolved air pipe, the dissolved air pipe is connected with a dissolved air pump, a second baffle is arranged above the dissolved air pipe, the second baffle inclines upwards along the direction far away from the sedimentation tank, a slag scraping assembly is arranged above the second baffle, a sludge cavity is arranged at the position, below the slag scraping assembly, of one side, far away from the sedimentation tank, of the dissolved air tank, and a second water outlet is formed below the sludge cavity; the cover plate is arranged above the gas dissolving pool and covers the first water outlet and the gas dissolving pool, and an air outlet pipeline is arranged on the cover plate and connected with an activated carbon box.

As a preferred technical scheme, a first sludge outlet is formed in the lower end of one side, away from the gas dissolving tank, of the sedimentation tank, and a sludge scraping assembly is arranged at the position, below the first baffle, in the sedimentation tank.

As a preferred technical scheme, the mud scraping component comprises a first scraper blade, the first scraper blade is movably connected with the side wall of the sedimentation tank, the lower edge of the first scraper blade is attached to the bottom wall of the sedimentation tank, the first scraper blade can move in the direction close to or far away from the gas dissolving tank, and the first scraper blade is connected with a driving component for driving the first scraper blade to move.

As a preferable technical solution, the water inlet is lower than the lower edge of the first water outlet, the lower edges of the water inlet and the first water outlet are both lower than the upper edge of the first baffle, and the included angle of the horizontal plane of the first baffle is set to be 50-75 °.

As a preferred technical scheme, a cover plate for covering the sedimentation tank is arranged on the sedimentation tank, and a gap between the cover plate and the side wall of the sedimentation tank forms the first water outlet.

In a preferred embodiment, the number of the dissolved air tubes is plural, and the plural dissolved air tubes are uniformly distributed in the dissolved air pool.

As a preferred technical scheme, the surface of the second baffle is a curved surface, and the included angle between the tangent line of the curved surface and the horizontal plane is gradually reduced and then gradually increased along the direction far away from the sedimentation tank.

As a preferable technical scheme, a plurality of through holes are formed in the second baffle, and the through holes are inclined upwards along the direction far away from the sedimentation tank.

As a preferred technical scheme, the slag scraping component comprises a conveyor belt and a plurality of second scraping plates arranged on the conveyor belt.

As a preferable technical scheme, a second sludge outlet is formed in the bottom of the gas dissolving pool.

The beneficial effects of the utility model are as follows:

1. according to the utility model, the sedimentation tank and the first baffle plate in the sedimentation tank can effectively precipitate impurities with larger particles and larger specific gravity in the sewage and avoid the impurities from entering the dissolved air tank; the gas dissolving pool and the second baffle plate in the gas dissolving pool can improve the combination time of the micro-bubbles and the suspended matters and improve the treatment effect on the suspended matters; the cover plate, the air outlet pipeline and the activated carbon box can be used for effectively filtering the gas, so that the discharged gas is not toxic or harmful or has peculiar smell; simple structure, convenient operation has improved the treatment effect to sewage to green.

2. The utility model can effectively discharge the sludge deposited at the bottom of the sedimentation tank in time by utilizing the sludge scraping component, ensures that the sewage entering the dissolved air tank does not contain impurities with larger particles and larger specific gravity any more, and has simple structure and simple and convenient operation.

3. The through holes of the second baffle plate can effectively disturb the flowing direction of sewage in the dissolved air pool, further improve the contact chance of the sewage and the micro-bubbles, improve the probability of combining the micro-bubbles with suspended matters and improve the sewage treatment effect.

Drawings

FIG. 1 is a schematic view of the overall structure of an advection type air-floating tank of the present invention.

In the figure: 1-a sedimentation tank, 11-a water inlet, 12-a first water outlet, 13-a first sludge outlet, 14-a first scraper, 15-a cover plate, 2-a gas dissolving tank, 21-a sludge cavity, 22-a second water outlet, 23-a second sludge outlet, 3-a first baffle, 4-a gas dissolving pipe, 5-a second baffle, 51-a through hole, 61-a conveyor belt, 62-a second scraper, 7-a cover plate, 71-a gas outlet pipeline and 72-an activated carbon box.

Detailed Description

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

Referring to fig. 1, the utility model provides a horizontal flow type air flotation tank, which comprises a sedimentation tank 1 and a dissolved air tank 2 which are connected, wherein a water inlet 11 is arranged at one side of the sedimentation tank 1 away from the dissolved air tank 2, and sewage firstly enters the sedimentation tank 1 through the water inlet 11; a first water outlet 12 is arranged on one side of the sedimentation tank 1 connected with the gas dissolving tank 2, a plurality of first baffles 3 are arranged in the sedimentation tank 1, the first baffles 3 incline downwards along the direction close to the gas dissolving tank 2, under the action of the first baffles 3, sewage has a downward inclined flow trend in the sedimentation tank 1, the sedimentation effect of impurities with larger particles and larger specific gravity can be improved, and sewage without the impurities with larger particles and larger specific gravity can flow into the gas dissolving tank 2 through the first water outlet 12; a dissolved air pipe 4 is arranged in the dissolved air pool 2, a plurality of air outlets are arranged on the dissolved air pipe 4, the dissolved air pipe 4 is connected with a dissolved air pump, and the dissolved air water is uniformly released into the dissolved air pool 2 along the dissolved air pipe 4 and through the air outlets under the action of the dissolved air pump; a second baffle 5 is arranged above the gas dissolving pipe 4, the second baffle 5 inclines upwards along the direction far away from the sedimentation tank 1, and under the action of the second baffle 5, sewage has an upward flow trend in the gas dissolving tank 2, so that the contact chance of the sewage and micro-bubbles can be improved; a slag scraping assembly is arranged above the second baffle 5, a sludge cavity 21 is arranged at the position, below the slag scraping assembly, of one side, far away from the sedimentation tank 1, of the gas dissolving tank 2, a second water outlet 22 is arranged below the sludge cavity 21, and the slag scraping assembly can scrape scum floating on the surface of the sewage into the sludge cavity 21; the cover plate 7 is arranged above the gas dissolving pool 2, the cover plate 7 covers the first water outlet 12 and the gas dissolving pool 2, the cover plate 7 is provided with a gas outlet pipeline 71, the gas outlet pipeline 71 is connected with an activated carbon box 72, and the cover plate 7 collects gas released from the sedimentation tank 1 and the gas dissolving pool 2 into the gas outlet pipeline 71 and can effectively purify the discharged gas after being filtered by the activated carbon box 72, so that the environment-friendly gas dissolving pool is green and environment-friendly.

In this embodiment, referring to fig. 1, a first sludge outlet 13 is disposed at a lower end of one side of the sedimentation tank 1 away from the gas dissolving tank 2, a sludge scraping assembly is disposed at a position below the first baffle 3 in the sedimentation tank 1, and sludge deposited at the bottom of the sedimentation tank 1 and composed of impurities with larger particles and larger specific gravity can be discharged from the first sludge outlet 13 under the action of the sludge scraping assembly; further, the sludge scraping component can comprise a first scraper 14, the first scraper 14 is movably connected with the side wall of the sedimentation tank 1, the lower edge of the first scraper 14 is attached to the bottom wall of the sedimentation tank 1, the first scraper 14 can move in the direction close to or far away from the dissolved air tank 2, the first scraper 14 is connected with a driving component for driving the first scraper 14 to move, and when the driving component drives the first scraper 14 to move, sludge at the bottom of the sedimentation tank 1 can be pushed to the first sludge outlet 13; specifically, the driving assembly may be an air cylinder or an electric push rod, and the first scraper 14 may be driven to move by the expansion of the air cylinder or the electric push rod.

It should be noted that, referring to fig. 1, the water inlet 11 should be lower than the lower edge of the first water outlet 12, and the lower edges of the water inlet 11 and the first water outlet 12 are both lower than the upper edge of the first baffle 3, so as to ensure that the sewage entering the sedimentation tank 1 can be guided by the first baffle 3; preferably, the included angle of the horizontal plane of the first baffle 3 is set to be 50-75 degrees, so that a good flow guide effect on sewage can be achieved.

In this embodiment, referring to fig. 1, a cover plate 15 covering the sedimentation tank 1 is disposed on the sedimentation tank 1, and a first water outlet 12 is formed in a gap between the cover plate 15 and a side wall of the sedimentation tank 1, so that the sewage and air in the sedimentation tank 1 can be discharged only from the first water outlet 12.

In this embodiment, referring to fig. 1, a plurality of air dissolving tubes 4 are provided, and the plurality of air dissolving tubes 4 are uniformly distributed in the air dissolving pool 2, so as to ensure that the air dissolving water can be uniformly released in the air dissolving pool 2.

In this embodiment, referring to fig. 1, the surface of the second baffle 5 is a curved surface, and an included angle between a tangent line of the curved surface and a horizontal plane gradually decreases and then gradually increases along a direction away from the sedimentation tank 1, so that the retention time of microbubbles in the dissolved air tank 2 can be further increased, the flowing direction of the sewage can be guided, the contact chance between the microbubbles and the suspended matter can be improved, and the combination effect of the microbubbles and the suspended matter can be improved; further, be equipped with a plurality of through-holes 51 on the second baffle 5, through-hole 51 is along the direction tilt up of keeping away from sedimentation tank 1, and through-hole 51 can effectual disturbance sewage flow direction in dissolving gas pond 2, and further improvement sewage and the contact chance of microbubble improve the probability that the microbubble combines the suspended solid.

In this embodiment, referring to fig. 1, the scum scraping assembly includes a conveyor belt 61 and a plurality of second scrapers 62 disposed on the conveyor belt 61, and the second scrapers 62 are driven by the conveyor belt to move so as to scrape scum on the surface of the sewage.

In this embodiment, referring to fig. 1, the bottom of the dissolved air pool 2 is provided with a second sludge outlet 23, and sludge deposited at the bottom of the dissolved air pool 2 can be discharged from the second sludge outlet 23.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A horizontal flow type air floatation tank is characterized by comprising a sedimentation tank and an air dissolving tank which are connected, wherein a water inlet is formed in one side of the sedimentation tank, which is far away from the air dissolving tank, a first water outlet is formed in one side of the sedimentation tank, which is connected with the air dissolving tank, a plurality of first baffle plates are arranged in the sedimentation tank, and the first baffle plates are inclined downwards along the direction close to the air dissolving tank; a dissolved air pipe is arranged in the dissolved air tank, a plurality of air outlet holes are formed in the dissolved air pipe, the dissolved air pipe is connected with a dissolved air pump, a second baffle is arranged above the dissolved air pipe, the second baffle inclines upwards along the direction far away from the sedimentation tank, a slag scraping assembly is arranged above the second baffle, a sludge cavity is arranged at the position, below the slag scraping assembly, of one side, far away from the sedimentation tank, of the dissolved air tank, and a second water outlet is formed below the sludge cavity; the cover plate is arranged above the gas dissolving pool and covers the first water outlet and the gas dissolving pool, and an air outlet pipeline is arranged on the cover plate and connected with an activated carbon box.

2. The advection-type air flotation tank as claimed in claim 1, wherein a first sludge outlet is formed at the lower end of one side of the sedimentation tank, which is far away from the air dissolution tank, and a sludge scraping assembly is arranged in the sedimentation tank at a position below the first baffle.

3. The advection-type air flotation tank as claimed in claim 2, wherein the mud scraping assembly comprises a first scraper movably connected with the side wall of the sedimentation tank, the lower edge of the first scraper is attached to the bottom wall of the sedimentation tank, the first scraper can move in a direction close to or away from the dissolved air tank, and the first scraper is connected with a driving assembly for driving the first scraper to move.

4. The advection-type air-flotation tank as claimed in claim 1, wherein the water inlet is lower than the lower edge of the first water outlet, the lower edges of the water inlet and the first water outlet are lower than the upper edge of the first baffle, and the included angle of the horizontal plane of the first baffle is set to be 50-75 °.

5. The advection-type air flotation tank according to claim 1, wherein a cover plate is arranged on the sedimentation tank and covers the sedimentation tank, and a gap between the cover plate and the side wall of the sedimentation tank forms the first water outlet.

6. The horizontal-flow air-flotation tank as claimed in claim 1, wherein the dissolved air tube is provided in a plurality of numbers, and the dissolved air tubes are uniformly distributed in the dissolved air tank.

7. The advection type air-flotation tank as claimed in claim 1, wherein the surface of the second baffle is a curved surface, and the included angle between the tangent of the curved surface and the horizontal plane gradually decreases and then gradually increases along the direction away from the sedimentation tank.

8. The advection-type air-flotation tank according to claim 1 or 7, wherein a plurality of through holes are arranged on the second baffle, and the through holes are inclined upwards along a direction away from the sedimentation tank.

9. The horizontal-flow air flotation tank as claimed in claim 1, wherein the slag scraping assembly comprises a conveyor belt and a plurality of second scraping plates arranged on the conveyor belt.

10. The advection-type air flotation tank as claimed in claim 1, wherein a second sludge outlet is formed at the bottom of the air flotation tank.