CN106904736B - Rigid-flexible combined aeration tank surface aeration device - Google Patents
Rigid-flexible combined aeration tank surface aeration device Download PDFInfo
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- CN106904736B CN106904736B CN201710190447.3A CN201710190447A CN106904736B CN 106904736 B CN106904736 B CN 106904736B CN 201710190447 A CN201710190447 A CN 201710190447A CN 106904736 B CN106904736 B CN 106904736B
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- rigid
- aeration
- aeration tank
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- blade
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/14—Activated sludge processes using surface aeration
- C02F3/18—Activated sludge processes using surface aeration the aerator having a horizontal axis
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
The invention provides a rigid-flexible combined aeration tank surface aeration device which comprises a hollow aeration tank (6), slide rails (1) oppositely and parallelly arranged at an opening of the aeration tank (6), a support frame (4) arranged on the slide rails (1), a connecting shaft (2) for connecting two edges of the support frame (4) vertical to the connecting shaft (2), a surface aerator (3) arranged in the support frame (4) and internally tangent to the slide rails (1), and a transmission device (5) arranged on the slide rails. Compared with the prior art, the invention has the beneficial effects that the rigid blades (3-1) are driven to interact with the liquid level through the back-and-forth swing of the transmission device (5), and the gas above the liquid level is automatically sucked into the liquid, so that the mixing efficiency of the air and the liquid in the aeration tank (6) is increased, and the high-efficiency mixing of the oxygen and the liquid is realized.
Description
Technical Field
The invention relates to an aeration device technology of an aeration tank, belonging to the technical field of rigid-flexible combined aeration tank surface aeration devices.
Background
At present, sewage is treated by an activated sludge method widely used in China, and the process flow comprises the steps of adjusting and distributing the sewage, adjusting pH, precipitating and decontaminating, adjusting the content of phosphorus and nitrogen and the like, then the sewage and return sludge enter an aeration tank, and the aeration tank is used for sewage treatment. The aeration tank provides a certain sewage retention time to meet the oxygen demand of aerobic microorganisms and the mixing condition of full contact with activated sludge. The aeration tank mainly comprises a tank body, an aeration air cylinder and a water inlet and a water outlet. Aeration methods mainly comprise blast aeration and mechanical aeration.
Blast aeration, also known as compressed air aeration, requires an additional aeration fan and a special aerator. The air is conveyed to the air diffusion device by an air compressor through a pipeline, the air diffusion device is fixedly arranged at the bottom of the pool, so that the air is dispersed in the sewage in a bubble mode, and different diffusion devices can be installed according to the requirement of the sewage to be treated. However, the conventional blast aeration device needs an air compressor to compress air, and an aeration pipeline is long and generally immovable, so that the aeration is not uniform along the length direction of the aeration pipe, and the oxygen utilization rate is low. In addition, the aeration pores are easily clogged with solid substances such as sludge, which also affects the efficiency of blast aeration. Mechanical aeration generally utilizes the stirring of the mechanical impeller installed in the aeration tank for oxygen in the air is dissolved in sewage, but the rotating speed of the impeller in the existing aeration tank is uncontrollable, the structure is more complex, and the existing device is urgently needed to be improved.
Therefore, in order to solve the above technical problems, it is necessary to provide a movable, speed-controllable, and simple-structured high-efficiency mixing aeration apparatus, so as to overcome the disadvantages of the prior art.
Disclosure of Invention
The technical problem is as follows: the invention aims to provide a rigid-flexible combined aeration tank surface aeration device, which solves the problems that the aeration device in the prior art has insufficient aeration capacity, needs an additional aeration fan, is easy to block aeration small holes, has poor water circulation flow power in an aeration tank, is uneven in mixing, has low oxygen utilization rate and the like.
The technical scheme is as follows: in order to solve the technical problem, the invention provides a rigid-flexible combined aeration tank surface aeration device which comprises a hollow aeration tank, slide rails oppositely and parallelly arranged at the opening of the aeration tank, a support frame arranged on the slide rails, a connecting shaft for connecting two sides of the support frame, which are vertical to the connecting shaft, a surface aerator arranged in the support frame and internally tangent to the slide rails, and a transmission device arranged on the slide rails, wherein the support frame is provided with a plurality of connecting shafts;
the surface aerator is positioned on the surface of the aeration tank, the supporting frame is connected with the transmission device, the surface aerator comprises at least two aeration devices, each aeration device is connected with a plurality of blades, a certain distance is reserved between each blade and each blade, each blade consists of an upper part and a lower part, the upper part is a rigid blade, the lower part is a flexible blade, part of the rigid blade on the upper part is exposed in the air, the rigid blade is driven to interact with the liquid level through the back-and-forth swing of the transmission device, and the gas above the liquid level is automatically sucked into the liquid.
Preferably, the rigid blades of the surface aerator are square or folded, and the rigid blades are perpendicular to the connecting shaft.
Preferably, the flexible blades are connected with rigid blades, two flexible blades are connected to each rigid blade, and the height of each flexible blade is 1-3 times that of each rigid blade.
Preferably, the height of the flexible blade is 1.2-2 times the height of the rigid blade.
Preferably, the flexible blade is made of polyvinyl chloride, chloroprene rubber, styrene butadiene rubber or silica gel.
Preferably, the transmission device is connected with the middle parts of two ends or the middle part of one side of the surface aerator support frame.
Preferably, the surface aerator connecting shaft is connected with a supporting frame, the supporting frame moves on a sliding rail, the whole movement is reciprocating movement, the movement is realized by a transmission device, and the single-pass movement distance is not more than 1/5 of the total length of the surface aerator.
Preferably, the surface aerator is moved at a speed of more than 0.5m/s, preferably 0.6-1.0 m/s.
Has the advantages that:
(1) the rigid-flexible combined aeration tank surface aeration device provided by the invention is simple in structure, and the traditional mode that the aeration device is fixed at the bottom of the aeration tank is replaced by connecting the aeration device with the support frame and placing the aeration device on the slide rail; when the aeration device breaks down, the spare aeration device can be directly replaced, and the fault aeration device can be cut, welded and maintained in a workshop, so that the time and the cost of installation and maintenance are saved, and the normal operation of the construction period is not influenced.
(2) The invention provides a rigid-flexible combined aeration tank surface aeration device which can drive a rigid blade to interact with a liquid surface by reciprocating on a slide rail through a transmission device, so that air above the liquid surface is automatically sucked below the liquid surface.
(3) The rigid-flexible combined aeration tank surface aeration device provided by the invention does not need an additional aeration fan, reduces additional equipment and has lower energy consumption.
(4) According to the rigid-flexible combined aeration tank surface aeration device provided by the invention, through the mutual combination of the rigid blades and the flexible blades, the water circulating flow capacity in the aeration tank is enhanced, so that air sucked under the liquid level is effectively redistributed in the aeration tank, and the utilization rate of the sucked air is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a surface aeration apparatus according to example 1;
FIG. 3 is a schematic view of a surface aeration apparatus according to example 2;
fig. 4 is a perspective view of the installation.
In the figure, 1 is a sliding rail, 2 is a connecting shaft, 3-1 is a rigid blade, 3-2 is a flexible blade, 4 is a supporting frame, 5 is a transmission device, and 6 is an aeration tank.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
A rigid-flexible combined aeration tank surface aeration device comprises a hollow aeration tank 6, a slide rail 1 oppositely and parallelly arranged at an opening of the aeration tank 6, a support frame 4 arranged on the slide rail 1, a connecting shaft 2 connecting the support frame 4 and two sides perpendicular to the connecting shaft 2, a surface aerator 3 arranged in the support frame 4 and internally tangent to the slide rail 1, and a transmission device 5 arranged on the slide rail;
the surface aerator 3 is positioned on the surface of an aeration tank 6, the support frame 4 is connected with the transmission device 5, the surface aerator 3 comprises at least two aeration devices, each aeration device is connected with a plurality of blades, a certain distance is reserved between each blade and the corresponding blade, each blade consists of an upper part and a lower part, the upper part is a rigid blade 3-1, the lower part is a flexible blade 3-2, part of the rigid blade 3-1 on the upper part is exposed in the air, and the rigid blade 3-1 is driven to interact with the liquid surface through the back-and-forth swing of the transmission device 5 so as to automatically suck the gas above the liquid surface into the liquid.
The rigid blades of the surface aerator 3 are square or folded, and the rigid blades 3-1 are perpendicular to the connecting shaft 2.
The flexible blades 3-2 are connected with the rigid blades 3-1, two flexible blades 3-2 are connected to each rigid blade 3-1, and the height of each flexible blade 3-2 is 1-3 times that of each rigid blade 3-1.
The height of the flexible blade 3-2 is 1.2-2 times of the height of the rigid blade 3-1.
The flexible blades 3-2 are made of polyvinyl chloride, chloroprene rubber, styrene butadiene rubber or silica gel.
The transmission device 5 is connected with the middle parts of two ends or the middle part of one side of the surface aerator support frame 4.
The surface aerator connecting shaft 2 is connected with a supporting frame 4, the supporting frame 4 moves on a sliding rail 1, the whole movement is reciprocating movement, the movement is realized by a transmission device, and the single-pass movement distance is not more than 1/5 of the total length of the surface aerator.
The surface aerator is moved at a speed of more than 0.5m/s, preferably 0.6-1.0 m/s.
Example 1:
for the rigid-flexible combined aeration tank surface aeration device, referring to fig. 1 and 2, the number of connecting shafts 2 of the surface aeration device is 2, the connecting shafts and rigid blades 3-1 form 90 degrees, and the rigid blades 3-1 are welded on the connecting shafts 1 in a square shape; the number of the rigid blades 3-1 connected to the connecting shaft 2 is 5, and the rigid blades 3-1 are uniformly distributed; the flexible blade 3-2 is in screw connection with the rigid blade 3-1, the height of the flexible blade 3-2 is 1.6 times that of the rigid blade 3-1, and the flexible blade 3-2 is made of polyvinyl chloride materials.
The transmission device is connected with the middle part of one side of the surface aeration device support frame 4, and under the drive of the motor, the transmission device drives the aeration device to reciprocate on the slide rail 1 back and forth, the movement speed is kept constant, and the movement speed is 0.7 m/s. To ensure the stability of the aeration device during movement, the single-pass travel distance of the aeration device is 1/5 times the length of the aeration device.
The working process of the invention is as follows: when the device works, the transmission device 5 works to drive the aeration device to reciprocate back and forth, and the activated sludge is uniformly mixed with air under the stirring of the aeration device, so that the utilization rate of oxygen is improved.
Example 2:
the same connecting shafts 2 and the same number of blades as those in the embodiment 1 are adopted, the same connecting mode as that in the embodiment 1 is adopted between the blades and the connecting shafts, and the flexible blades 3-2 are made of polyvinyl chloride materials. The rigid blades 3-1 are in a curved surface three-bend shape, and the rigid blades 3-1 are uniformly distributed; the height of the flexible blade 3-2 is 1.5 times that of the rigid blade 3-1. The working process and operating conditions of the invention remained the same as in example 1.
Example 3:
the connecting shafts 2 and the number of the blades are the same as those in embodiment 1, and the connecting modes between the blades and the connecting shafts are the same as those in embodiment 1. The rigid blades 3-1 are square, and the rigid blades 3-1 are uniformly distributed; the height of the flexible blade 3-2 is 1.6 times that of the rigid blade 3-1. The transmission device is connected with the middle part of one side of the surface aeration device support frame 4, and under the drive of the motor, the transmission device drives the aeration device to reciprocate on the slide rail 1 back and forth, the movement speed is kept constant, and the movement speed is 1.0 m/s. The working process and the operating conditions not mentioned of the present invention remain the same as in example 1.
The above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiment, but equivalent modifications or changes made by those skilled in the art according to the present disclosure should be included in the scope of the present invention as set forth in the appended claims.
Claims (6)
1. The utility model provides a combination formula aeration tank surface aeration equipment just gentle which characterized in that: the device comprises a hollow aeration tank (6), a slide rail (1) oppositely and parallelly arranged at an opening of the aeration tank (6), a support frame (4) arranged on the slide rail (1), a connecting shaft (2) connected with two edges of the support frame (4) and parallel to the slide rail (1), a surface aerator (3) arranged in the support frame (4) and vertical to the slide rail (1), and a transmission device (5) arranged on the slide rail;
the surface aerator (3) is positioned on the surface of the aeration tank (6), the support frame (4) is connected with the transmission device (5), the connecting shaft (2) comprises at least two surface aerators (3), a certain distance is reserved between the surface aerators (3), each surface aerator (3) consists of an upper part and a lower part, the upper part is a rigid blade (3-1), the lower part is a flexible blade (3-2), part of the rigid blade (3-1) at the upper part is exposed in the air, the rigid blade (3-1) is driven to interact with the liquid level through the back and forth swing of the transmission device (5), and the gas above the liquid level is automatically sucked into the liquid;
the rigid blade of the surface aerator (3) is square or folded, and the rigid blade (3-1) is vertical to the connecting shaft (2);
the flexible blades (3-2) are connected with the rigid blades (3-1), two flexible blades (3-2) are connected to each rigid blade (3-1), and the height of each flexible blade (3-2) is 1-3 times that of each rigid blade (3-1).
2. The rigid-flexible combined aeration tank surface aeration device according to claim 1, wherein the height of the flexible blades (3-2) is 1.2-2 times the height of the rigid blades (3-1).
3. The rigid-flexible combined aeration tank surface aeration device according to claim 1, wherein the flexible blades (3-2) are made of polyvinyl chloride, neoprene, styrene-butadiene rubber or silica gel.
4. The rigid-flexible combined aeration tank surface aeration device according to claim 1, wherein the transmission device (5) is connected with the middle part of two ends or the middle part of one side of the surface aerator support frame (4).
5. The rigid-flexible combined aeration tank surface aeration device according to the claim 1, characterized in that the surface aerator connecting shaft (2) is connected with a supporting frame (4), the supporting frame (4) moves on a sliding rail (1) and the whole movement is reciprocating movement, the movement is realized by a transmission device, and the single-pass movement distance is not more than 1/5 of the total length of the surface aerator.
6. The rigid-flexible combined aeration tank surface aeration device according to claim 1, wherein the speed of movement of the surface aerator is greater than 0.5 m/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710190447.3A CN106904736B (en) | 2017-03-27 | 2017-03-27 | Rigid-flexible combined aeration tank surface aeration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710190447.3A CN106904736B (en) | 2017-03-27 | 2017-03-27 | Rigid-flexible combined aeration tank surface aeration device |
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| Publication Number | Publication Date |
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| CN106904736A CN106904736A (en) | 2017-06-30 |
| CN106904736B true CN106904736B (en) | 2020-12-11 |
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| CN201710190447.3A Active CN106904736B (en) | 2017-03-27 | 2017-03-27 | Rigid-flexible combined aeration tank surface aeration device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107381673A (en) * | 2017-08-29 | 2017-11-24 | 金海珍 | A kind of flower cultivation is stranded water installations |
| CN108529770B (en) * | 2018-05-02 | 2024-05-24 | 杭州湾高科技有限公司 | Reciprocating intelligent aeration system |
| CN111439857A (en) * | 2020-05-20 | 2020-07-24 | 上海市园林设计研究总院有限公司 | Automatic change track under water and push away STREAMING water circulation oxygenation device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1167029A (en) * | 1980-03-17 | 1984-05-08 | Josef Muskat | Rotating-arm depending articulated paddle agitators operating in a water treatment basin |
| JPH1194789A (en) * | 1997-09-24 | 1999-04-09 | Hitachi Kiden Kogyo Ltd | Apparatus for preventing adhesion of impurities in measuring sensor |
| CN2668622Y (en) * | 2003-11-20 | 2005-01-05 | 同济大学 | Efficient surface-oxygenation aeration machine |
| CN2763261Y (en) * | 2005-01-27 | 2006-03-08 | 李开明 | Adjustable, low-noise and water-wheel type aeration equipment |
| CN103721606A (en) * | 2014-01-15 | 2014-04-16 | 重庆大学 | Rigidity and flexibility combined stirring paddle |
-
2017
- 2017-03-27 CN CN201710190447.3A patent/CN106904736B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1167029A (en) * | 1980-03-17 | 1984-05-08 | Josef Muskat | Rotating-arm depending articulated paddle agitators operating in a water treatment basin |
| JPH1194789A (en) * | 1997-09-24 | 1999-04-09 | Hitachi Kiden Kogyo Ltd | Apparatus for preventing adhesion of impurities in measuring sensor |
| CN2668622Y (en) * | 2003-11-20 | 2005-01-05 | 同济大学 | Efficient surface-oxygenation aeration machine |
| CN2763261Y (en) * | 2005-01-27 | 2006-03-08 | 李开明 | Adjustable, low-noise and water-wheel type aeration equipment |
| CN103721606A (en) * | 2014-01-15 | 2014-04-16 | 重庆大学 | Rigidity and flexibility combined stirring paddle |
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| CN106904736A (en) | 2017-06-30 |
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