阅读说明：本技术 一种净化设备及其两室式气提设备 (Purifying equipment and two-chamber type air stripping equipment thereof ) 是由 张广学 潘海燕 于 2019-10-30 设计创作，主要内容包括：本发明公开了一种净化设备及其两室式气提设备,包括设置在生物池内的曝气装置、第一隔墙和第二隔墙,第一隔墙和第二隔墙之间形成提升室,曝气装置延伸至提升室内；还包括设置在生物池内的第三隔墙,第三隔墙位于第二隔墙远离第一隔墙的一侧,第三隔墙与第二隔墙之间形成释气室；第二隔墙的底部与生物池的底面不接触,以供释气室与提升室连通后污泥自释气室流动至提升室内。本发明所提供的两室式气提设备,通过增设第三隔墙和释气室,不仅达到了节能的效果,可以满足日常工程运行工况所需的与气提装置相通功能区之间,污泥浓度差异化梯度控制的技术难题,省去了现有技术中的气体扩散装置,减少维护和维修,有效节省成本。(The invention discloses a purifying device and a two-chamber type air stripping device thereof, which comprise an aeration device, a first partition wall and a second partition wall, wherein the aeration device, the first partition wall and the second partition wall are arranged in a biological pond, a lifting chamber is formed between the first partition wall and the second partition wall, and the aeration device extends into the lifting chamber; the biological pond also comprises a third partition wall arranged in the biological pond, the third partition wall is positioned on one side of the second partition wall, which is far away from the first partition wall, and a gas release chamber is formed between the third partition wall and the second partition wall; the bottom of the second partition wall is not contacted with the bottom surface of the biological pond, so that the sludge flows into the lifting chamber from the air release chamber after the air release chamber is communicated with the lifting chamber. The two-chamber type gas stripping equipment provided by the invention has the advantages that the third partition wall and the gas releasing chamber are additionally arranged, so that the energy-saving effect is achieved, the technical problem of sludge concentration differential gradient control between functional areas communicated with the gas stripping device and required by the operation working conditions of daily engineering can be met, the gas diffusion device in the prior art is omitted, the maintenance and the repair are reduced, and the cost is effectively saved.)

1. A two-chamber air stripping device comprises an aeration device (11), a first partition wall (2) and a second partition wall (3) which are arranged in a biological pond (1), wherein a lifting chamber (5) is formed between the first partition wall (2) and the second partition wall (3), and the lifting chamber (5) is positioned in an aeration zone; the device is characterized by further comprising a third partition wall (4) arranged in the biological pond (1), wherein the third partition wall (4) is positioned on one side, away from the first partition wall (2), of the second partition wall (3), a gas release chamber (6) is formed between the third partition wall (4) and the second partition wall (3), and the gas release chamber (6) is positioned in an aeration area; the bottom of the second partition wall (3) is not in contact with the bottom surface of the biological pond (1) so that sludge flows from the air releasing chamber (6) into the lifting chamber (5) after the air releasing chamber (6) is communicated with the lifting chamber (5).

2. The two-compartment stripping apparatus according to claim 1, characterized in that the second partition (3) has a higher top height than the first partition (2) and the third partition (4); the bottoms of the first partition wall (2) and the third partition wall (4) are both contacted with the bottom surface of the biological pond (1); the top height of the third partition wall (4) is lower than the liquid level height, and the top height of the first partition wall (2) is smaller than the top height of the third partition wall (4).

3. The two-compartment stripping apparatus according to claim 2, characterized in that the top of the second partition wall (3) projects above the liquid level.

4. The two-chamber stripping apparatus according to claim 1, characterized in that the bottom of the second partition wall (3) is provided with an inclined portion when the aeration device (11) extends to the gas release chamber (6) to prevent the gas generated by the aeration device (11) from entering the gas release chamber (6), and the bottom of the inclined portion is not in contact with the bottom surface of the biological pond (1).

5. The two-chamber stripping apparatus according to any of claims 1 to 4, characterized in that a stirring device is also provided in the biological pond (1), which stirring device is located on the side of the third partition wall (4) remote from the second partition wall (3).

6. The two-compartment gas stripping apparatus according to claim 5, wherein the agitator is an air agitator with adjustable air output.

7. The two-compartment air stripping apparatus according to claim 6, characterized in that the air stirring device comprises a main air supply duct (10-1), a branch air supply duct (10-3) communicating with the main air supply duct (10-1), an aeration duct (10-4) communicating with the branch air supply duct (10-3), and a control valve (10-2) for regulating the air volume.

8. The two-compartment gas stripping apparatus according to claim 7, characterized in that the control valve (10-2) is mounted on top of the main air supply duct (10-1) above the liquid level.

9. A purification apparatus comprising a biological tank and a two-chamber stripping apparatus, characterized in that the two-chamber stripping apparatus is a two-chamber stripping apparatus according to any one of claims 1 to 8.

Technical Field

The invention relates to the field of water treatment equipment, in particular to two-chamber type gas stripping equipment. Furthermore, the application relates to a purification device comprising the two-chamber stripping device.

Background

At present, the sewage treatment backflow mostly adopts the backflow of a mechanical pump, but because the number of easily damaged parts is large, the maintenance workload is large, the power consumption is high, the backflow ratio is small, the biological treatment efficiency and the removal effect are mostly small due to the backflow ratio and are difficult to promote, and therefore a new device which is more economic, has small maintenance workload and low energy consumption is urgently needed to replace the prior device.

Disclosure of Invention

The invention aims to provide a two-chamber type air stripping device which can realize the lifting of muddy water mixed liquor on the premise of not additionally increasing energy consumption and can realize the differential operation of the sludge concentration of functional areas on the left side and the right side of an air stripping lifting area. It is another object of the present application to provide a purification apparatus comprising the two-chamber stripping apparatus described above.

In order to achieve the purpose, the invention provides the following technical scheme:

a two-chamber air stripping device comprises an aeration device, a first partition wall and a second partition wall which are arranged in a biological pond, wherein a lifting chamber is formed between the first partition wall and the second partition wall and is positioned in an aeration zone; the biological pond also comprises a third partition wall arranged in the biological pond, the third partition wall is positioned on one side of the second partition wall far away from the first partition wall, a gas release chamber is formed between the third partition wall and the second partition wall, and the gas release chamber is positioned in an aeration zone; the bottom of the second partition wall is not in contact with the bottom surface of the biological pond, so that sludge flows into the lifting chamber from the air releasing chamber after the air releasing chamber is communicated with the lifting chamber.

Preferably, the top height of the second partition wall is higher than the top heights of the first partition wall and the third partition wall; the bottoms of the first partition wall and the third partition wall are both in contact with the bottom surface of the biological pond; the top height of the third partition wall is lower than the liquid level height, and the top height of the first partition wall is smaller than the top height of the third partition wall.

Preferably, the top of the second partition wall extends above the liquid level.

Preferably, when the aeration device extends to the gas release chamber, the bottom of the second partition wall is provided with an inclined portion to prevent gas generated by the aeration device from entering the gas release chamber, and the bottom of the inclined portion is not in contact with the bottom surface of the biological pond.

Preferably, an air stirring device is further arranged in the biological pond and is positioned on one side, far away from the second partition wall, of the third partition wall.

Preferably, the air stirring device is an air stirring device with adjustable air output.

Preferably, the air stirring device comprises an air supply main pipe, an air supply branch pipe communicated with the air supply main pipe, an aeration pipe communicated with the air supply branch pipe, and a control valve for adjusting air volume.

Preferably, the control valve is installed at the top of the air supply main pipe and is located above the liquid level.

The application also provides a purification device, which comprises a biological pool and the two-chamber type gas stripping device.

The invention provides two-chamber type air stripping equipment, which comprises an aeration device, a first partition wall and a second partition wall, wherein the aeration device, the first partition wall and the second partition wall are arranged in a biological pond, a lifting chamber is formed between the first partition wall and the second partition wall, and the lifting chamber is positioned in an aeration zone; the biological pond also comprises a third partition wall arranged in the biological pond, the third partition wall is positioned on one side of the second partition wall, which is far away from the first partition wall, a gas release chamber is formed between the third partition wall and the second partition wall, and the gas release chamber is also positioned in an aeration zone; the bottom of the second partition wall is not in contact with the bottom surface of the biological pond, so that sludge flows into the lifting chamber from the air releasing chamber after the air releasing chamber is communicated with the lifting chamber. According to the two-chamber type gas stripping equipment provided by the invention, the third partition wall and the gas releasing chamber are additionally arranged, so that the energy-saving effect is achieved, the technical problem of sludge concentration differential gradient control between functional areas communicated with the gas stripping device and required by daily engineering operation working conditions can be met, the defects of the traditional gas stripping device are greatly overcome, an additionally arranged gas diffusion device in the prior art can be omitted, the maintenance and the repair are reduced, and the investment and the operation cost are effectively saved. The essential difference between the air lifting device and the existing air lifting device is that the existing air lifting device and the second functional area have to keep density difference to realize air lifting, and the air lifting device can realize air lifting only by the density difference between the lifting chamber and the air release chamber, so that the essential precondition is provided for replacing the existing air lifting device to additionally arrange the air diffusion device and realizing the sludge concentration differential operation of the first functional area and the second functional area.

The purifying equipment that this application provided is equipped with above-mentioned two room formula air stripping equipment, because two room formula air stripping equipment has above-mentioned technological effect, consequently, the purifying equipment who is equipped with this two room formula air stripping equipment should also have corresponding technological effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of a prior art purification apparatus;

FIG. 2 is a schematic structural view of one embodiment of a two-compartment stripping apparatus provided herein;

FIG. 3 is a schematic diagram of another embodiment of a two-compartment stripping apparatus according to the present invention;

wherein: the device comprises a biological pond (1), a first partition wall (2), a second partition wall (3), a third partition wall (4), a lifting chamber (5), an air release chamber (6), a first functional area (7), a second functional area (8), an air diffusion device (9), an air supply main pipe (10-1), a control valve (10-2), an air supply branch pipe (10-3), an aeration pipe (10-4) and an aeration device (11).

Detailed Description

The core of the invention is to provide the two-chamber type gas stripping equipment, the two-chamber type gas stripping equipment can save more than 30% of energy consumption, and can effectively reduce the maintenance workload. It is another core of the present application to provide a purification apparatus comprising the two-chamber stripping apparatus described above.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 2 and 3, fig. 2 is a schematic structural view of an embodiment of a two-chamber stripping apparatus according to the present invention; FIG. 3 is a schematic structural view of another embodiment of a two-compartment stripping apparatus according to the present invention.

In this embodiment, the two-compartment gas stripping apparatus comprises an aerator 11, a first partition 2, a second partition 3 and a third partition 4.

Wherein, the aeration device 11 is arranged in the biological pond 1 and is used for providing oxygen to the biological pond 1; first partition wall 2, second partition wall 3 and third partition wall 4 all are located biological pond 1, and third partition wall 4 is located one side that first partition wall 2 was kept away from to second partition wall 3, forms between first partition wall 2 and the second partition wall 3 and promotes room 5, forms an individual cavity between third partition wall 4 and the second partition wall 3, release chamber 6 promptly, and promotion room 5 and release chamber 6 all are located the aeration zone, and aeration equipment has all been laid to promotion room 5 and release chamber 6 bottom promptly.

Further, the bottom of the second partition wall 3 is not in contact with the bottom surface of the biological pond 1 and is not in contact with the third partition wall 4, so that after the air release chamber 6 is communicated with the lifting chamber 5, sludge flows from the air release chamber 6 into the lifting chamber 5.

It should be noted here that, because the aeration device 11 has a wide coverage, the aeration device 11 is generally laid on the bottom of the whole biological pond 1, that is, the aeration device 11 is also laid on the bottom of the air releasing chamber 6, and for the purpose of releasing air from the air releasing chamber 6, air generated in the aeration device 11 can be blocked from entering the air releasing chamber 6, specifically, when the aeration device 11 extends to the air releasing chamber 6, the bottom of the second partition wall 3 is provided with an inclined portion to prevent the air generated by the aeration device 11 from entering the air releasing chamber 6, and the bottom of the inclined portion is not in contact with the bottom surface of the biological pond 1.

According to the two-chamber type gas stripping equipment provided by the invention, the third partition wall 4 and the gas release chamber 6 are additionally arranged, so that the energy-saving effect is achieved, the technical problem of sludge concentration differential gradient control between functional areas communicated with the gas stripping device and required by daily engineering operation working conditions can be met, the defects of the traditional gas stripping device are greatly overcome, the gas diffusion device 9 in the prior art is omitted, the maintenance and the repair are reduced, and the cost is effectively saved.

In addition to the above embodiments, the height of the top of the second partition wall 3 is higher than the height of the top of the first partition wall 2 and the third partition wall 4; the bottoms of the first partition wall 2 and the third partition wall 4 are both contacted with the bottom surface of the biological pond 1; the height of the top of the third partition wall 4 is lower than the height of the liquid level, and the height of the top of the first partition wall 2 is lower than the height of the top of the third partition wall 4. The arrangement is that a U-shaped pipe is formed between the air releasing chamber 6 and the lifting chamber 5.

Specifically, as shown in fig. 2, in the process that the muddy water mixed liquid mixed with bubbles in the area of the biological pond 1 on the right side of the air releasing chamber 6, namely the second functional area 8, crosses the top end of the third partition wall 4 and enters the air releasing chamber 6 to move downwards, the bubbles are lighter and move upwards under the action of buoyancy, so that air and muddy water are separated in the air releasing chamber 6, and the air releasing effect is achieved; just because of the addition of the air release chamber 6, under the condition that the lifting chamber 5 is communicated with the bottom of the air release chamber 6, because the mud-water mixed liquid in the air release chamber 6 has less or no air bubbles, and because the bottom of the biological pond 1 is provided with the aeration equipment in the lifting chamber 5, the muddy water mixed liquid in the gas releasing chamber is mixed with a large amount of bubbles to cause the density of the lifting chamber 5 to be far lower than that of the gas releasing chamber 6, under the action of the U-shaped pipe principle, the muddy water mixed liquid entering the air releasing chamber 6 lifts the muddy water mixed liquid in the inner area of the lifting chamber 5, and forms a certain liquid level difference to force the muddy water mixed liquid in the inner area of the lifting chamber 5 to flow to the area of the biological pond 1 at the left side outside the lifting chamber 5, namely, the first functional area 7 generates continuous lifting power, so that the effect of lifting the muddy water by air lifting with air as a power source is achieved, and an additionally arranged air diffusion device required by the traditional air lifting device can be eliminated. Because the air diffusion device that is used for traditional air stripping device is mostly the perforation design mode that punches, its oxygen transmission efficiency is low, very extravagant energy consumption, but if do not add air diffusion device, then promote 5 insides in the room and can not produce again and promote power.

Preferably, the top of the second partition wall 3 extends to above the liquid level, and the mud-water mixed liquid in the air release chamber 6 and the lifting chamber 5 needs to be communicated through the bottom of the second partition wall 3, so that the liquid level lifting effect in the lifting chamber 5 is realized.

On the basis of the above embodiments, the biological pond 1 is further provided with a stirring device, the stirring device is located on one side of the third partition wall 4 far away from the second partition wall 3, the stirring device is used for mixing and stirring the liquid in the second functional area 8, so as to prevent the bottom of the liquid from depositing, and the concentration of the sludge in the biological pond of the second functional area can be changed by controlling the stirring air quantity of the stirring device.

Specifically, agitating unit is air mixing device of air output adjustable, through the valve, can make things convenient for the control of air output, adjusts the mud concentration height about the biological pond of second functional area.

On the basis of the above embodiments, the air stirring device comprises an air supply main pipe 10-1, an air supply branch pipe 10-3 communicated with the air supply main pipe 10-1, an aeration pipe 10-4 communicated with the air supply branch pipe 10-3, and a control valve 10-2 for adjusting air volume. Specifically, the main air supply pipe 10-1 can be connected with an air source, and the air stirring device only has the function of changing the stirring strength, so that only air needs to be supplied, and the main air supply pipe 10-1, the branch air supply pipes 10-3 and the aeration pipes 10-4 in the aeration device 11 can be directly selected for selection, so that the materials are convenient to obtain.

On the basis of the above embodiments, the control valve 10-2 is installed on the top of the main air supply pipe 10-1 and above the liquid level, so as to facilitate the operation.

In some in-situ upgrading and upgrading modification projects, the upgrading modification is usually satisfied by adopting a design mode of increasing the number of microorganisms in the unit tank, namely, the standard-reaching modification is satisfied by a mode of increasing the sludge concentration. However, in this way, the concentration of the sludge discharged from the first functional area 7 into the original secondary sedimentation tank will cause the phenomenon that the original secondary sedimentation tank may be overloaded and cannot normally operate. At the moment, as long as the sludge concentration of the sludge discharged into the first functional area 7 of the secondary sedimentation tank maintains the normal sludge concentration, and the sludge concentration of the second functional area 8 is far higher than the conventional sludge concentration control mode, the in-situ upgrading and transformation can be realized by the differentiated sludge concentration control mode, the normal operation of the original secondary sedimentation tank can not be influenced, and the normal reflux ratio required by air stripping can also be ensured. Sometimes, people also can meet the situation frequently, when the operation load is far lower than the design load, the larger aeration tank capacity easily causes sludge aging and flocculation, so the sludge needs to be treated by reducing the aeration tank capacity, the sludge concentration of the first functional area 7 can be reduced, the sludge concentration of the second functional area 8 can be increased, the sewage treatment plant can meet the requirement of normal standard discharge, and the operation energy consumption can be further reduced. For example, like the above-mentioned similar projects, because of the engineering project that needs differential operation to control the operation of sludge concentration, it is very difficult to achieve that each functional zone can differentially control the operation of sludge concentration with respect to the design mode of the gas stripping device shown in fig. one, because such design mode that the first functional zone 7 and the second functional zone 8 are interconnected and communicated through the lifting chamber of the conventional gas stripping device and the differential operation of sludge concentration of each functional zone cannot be independently controlled, the application range is greatly limited.

In one embodiment provided by the present application, as shown in fig. 2, due to the addition of the third partition wall 4, when the stirring intensity at the bottom of the second functional area 8 is sufficient, the sludge concentration at the bottom and the upper part of the second functional area 8 will be almost the same because the sludge in the second functional area 8 enters the air releasing chamber 6 from the top of the third partition wall 4, and the sludge in the second functional area 8 will turn over the top of the third partition wall 4, enter the lifting chamber 5 through the air releasing chamber 6, and then enter the first functional area 7 through the lifting chamber 5, so that the sludge concentration in the second functional area 8 and the sludge concentration in the first functional area 7 are almost not different; by utilizing the stirring device, the air stirring strength at the bottom of the second functional area 8 is gradually reduced, the sludge concentration at the upper part is not enough due to the insufficient stirring strength, and the sludge bed at the bottom is difficult to be completely expanded to the top, so that the phenomenon that the sludge concentration at the lower part is high and the sludge concentration at the upper part is low is presented, therefore, the method is easy to realize the effective control of the strength and the weakness of the air stirring strength in the second functional area 8, thereby achieving the control of the concentration of the sludge at the upper layer in the second functional area 8, finally realizing the concentration of the sludge entering the air releasing chamber 6, further realizing the final control of the concentration of the sludge in the first functional area 7, and finally achieving the technical problem of difficult sludge concentration differential gradient control between the first functional area 7 and the second functional area 8 communicated by the air lifting device.

The specific working implementation mode is as follows:

as shown in fig. 3: air conveyed by the blower through the air supply main pipe 10-1 is conveyed to the air stirring device at the bottom of the second functional area 8 through the air supply branch pipe 10-3 through the control valve 10-2; the amount of gas released by the air stirring device at the bottom of the second functional area 8 directly determines the expansion height of the sludge bed at the bottom of the second functional area 8 and also directly determines the sludge concentration at the top of the second functional area 8, so that the amount of gas input into the air stirring device at the bottom of the second functional area 8 through the control valve 10-2 is adjusted and controlled to realize the sludge concentration in the air releasing chamber 6 at the second functional area 8, and the sludge concentration difference gradient control of the first functional area 7 and the second functional area 8 is realized.

Meanwhile, the bottom parts of the air stripping chamber and the lifting chamber are provided with the aeration devices, and air released by the aeration devices can only enter the lifting chamber but cannot enter the air release chamber, so that a good necessary condition is created for the density difference formed between the lifting chamber and the air release chamber, and the air diffusion device does not need to be additionally arranged like the existing air stripping device, thereby wasting unnecessary lifting energy consumption.

Compared with the existing air lifting equipment, the air lifting equipment provided by the embodiment has the advantages that the third partition wall 4 and the air release chamber 6 are additionally arranged, so that the energy-saving effect is achieved, the technical problem of sludge concentration differential gradient control between functional areas which are required by daily engineering operation conditions and communicated with the air lifting device can be solved, the defects of the traditional air lifting device are greatly overcome, and meanwhile, air lifting can be achieved without additionally increasing energy consumption.

Besides the two-chamber air stripping device, the present application also provides a purification device comprising a biological pool and the two-chamber air stripping device, and the structure of other parts of the purification device refers to the prior art and is not repeated herein.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The two-compartment stripping apparatus provided by the present invention has been described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.