CN107840445B - Aeration system for biological contact oxidation pond - Google Patents
Aeration system for biological contact oxidation pond Download PDFInfo
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- CN107840445B CN107840445B CN201711033967.XA CN201711033967A CN107840445B CN 107840445 B CN107840445 B CN 107840445B CN 201711033967 A CN201711033967 A CN 201711033967A CN 107840445 B CN107840445 B CN 107840445B
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- Prior art keywords
- aeration
- pipe
- perforated
- rotary
- contact oxidation
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- 238000005273 aeration Methods 0.000 title claims abstract description 208
- 230000003647 oxidation Effects 0.000 title claims abstract description 24
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 238000005260 corrosion Methods 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000000945 filler Substances 0.000 abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 238000005243 fluidization Methods 0.000 abstract description 7
- 239000010802 sludge Substances 0.000 abstract description 7
- 238000009825 accumulation Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 7
- 238000005276 aerator Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- C02F3/10—Packings; Fillings; Grids
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention discloses an aeration system for a biological contact oxidation pond, which is characterized in that each aeration branch pipe is at least connected with a group of rotary aeration devices, each rotary aeration device comprises a rotary tee joint, the middle end of each rotary tee joint is provided with an upward hole and is connected with the aeration branch pipe through a bearing, one end of each rotary tee joint is connected with a first perforated aeration pipe, the other end of each rotary tee joint is connected with a second perforated aeration pipe, and the holes of the first perforated aeration pipe and the second perforated aeration pipe face to two sides respectively, so that gas reaction force generated by the rotary aeration devices during aeration pushes the perforated aeration pipes to form automatic rotation. The system is mainly applied to the biological pretreatment process of water treatment, and the rotary aeration pipe is arranged at the bottom of the tank, so that the aeration pipe is pushed to rotate by utilizing the gas reaction force generated during single-side aeration, the aeration area is enlarged, the effective fluidization of biological fillers can be ensured, and the sludge accumulation at the bottom of the tank can be avoided.
Description
Technical Field
The invention relates to an aeration system for a biological contact oxidation pond. The system is mainly applied to the biological pretreatment process of water treatment, and the rotary aeration pipe is arranged at the bottom of the tank, so that the aeration pipe is pushed to rotate by utilizing the gas reaction force generated during aeration, the aeration area is enlarged, the effective fluidization of biological fillers can be ensured, and the sludge at the bottom of the tank can be avoided.
Background
The biological contact oxidation pond is one of common treatment structures in water plants, enhances the removal of organic matters and ammonia nitrogen in water through biological action, and is therefore a widely used treatment structure in the feed water pretreatment process. To enhance the biological treatment effect, a biological filler is usually added to the tank and properly aerated. The biological filler mainly comprises a carrier and a biological film, and the activity of the biological filler is changed along with the continuous change of external conditions. In order to ensure the stability of the biological filler, an aeration system is usually arranged at the bottom of the biological contact oxidation tank. The aeration system not only has oxygenation function, but also has function of fluidization biological filler. The traditional aeration system is characterized in that perforated aeration pipes are arranged at the bottom of the tank, the fixed aeration pipes are large in distance, aeration blind areas are easy to appear, biological fillers are enabled to float on the water surface or to be deposited at the bottom of the tank, dead balls are changed into dead balls, the activity of biological membranes is reduced, and then the treatment effect of the biological contact oxidation tank is reduced. In addition, the aeration blind areas between the aeration pipes are easy to produce pool bottom mud, and the bottom mud is hardened for a long time, which is not beneficial to the normal operation of the biological contact oxidation pool. Therefore, it is important to improve the scientificity and rationality of the aeration system of the biological contact oxidation pond.
In addition, the traditional perforated aeration pipe adopts double-side holes and is fixed at the bottom of the tank, and the horizontal thrust generated by one-side aeration is counteracted by the horizontal thrust generated by the aeration at the other side, so that the work is not effectively done, and the energy waste is caused. Therefore, it is also important how to make full use of the aerodynamic forces generated during aeration to do useful work.
Disclosure of Invention
The invention aims to provide an aeration system for a biological contact oxidation pond, which can fully utilize the gas reaction force generated during aeration by a specific aeration pipe opening method to drive the aeration pipe to automatically rotate, ensure the effective fluidization of biological fillers and simultaneously avoid sludge accumulation at the bottom of the pond. The aeration system is suitable for various new or improved projects using biological contact oxidation technology.
In order to achieve the above object, the technical scheme of the present invention is as follows: the utility model provides an aeration system for biological contact oxidation pond, includes the aeration main pipe, a plurality of aeration branch pipes of being connected with the aeration main pipe, its characterized in that every aeration branch pipe is connected with a set of rotatory aeration equipment at least, rotatory aeration equipment includes a rotatory tee bend, rotatory tee bend's middle-end trompil up, through bearing and aeration branch pipe connection, rotatory tee bend's one end and first perforation aeration pipe connection, rotatory tee bend's the other end and second perforation aeration pipe connection, the trompil of first perforation aeration pipe and second perforation aeration pipe is towards both sides respectively for rotatory aeration equipment promotes perforation aeration pipe formation autogiration at the gaseous reaction force that produces when the aeration.
Further, the diameter of the perforated aerator pipe is 4-5 mm, and the direction of the perforated aerator pipe is 30-45 degrees downwards in the horizontal direction.
Further, the diameter of the aeration main pipe is DN, the DN value is 150mm to 200mm, and the diameter of the aeration branch pipe is 40mm to 50mm.
Further, the gas design flow rate in the first perforation aeration pipe and the second perforation aeration pipe is 5 m/s-10 m/s.
Furthermore, the bearing is made of corrosion-resistant and friction-resistant materials, preferably stainless steel or high-temperature ceramics.
Further, the opening position of the first perforated aeration pipe is l1=2a (X-1) +a, wherein X represents the X-th aeration hole from the center to the outer end, L1 is the distance from the aeration hole to the center, and a is the opening interval of the aeration hole, and is usually 5 cm to 20 cm; the opening position of the second perforated aeration pipe is L2=2aX, wherein X represents the X-th aeration hole from the center to the outer end, and L2 is the distance from the aeration hole to the center.
The aeration system can realize the automatic rotation of the perforated aeration pipe, and enlarges the aeration area under the condition that the arrangement modes of the aeration main pipe and the branch pipe are the same, thereby improving the uneven fluidization problem of biological fillers in the biological contact oxidation pond and avoiding the occurrence of the sludge accumulation phenomenon at the bottom of the pond. The number and the size of the rotary aeration devices are determined according to the size of the biological contact oxidation pond, and the aeration area is increased under the condition of the same aeration amount, so that the aeration blind area of the traditional fixed type perforated aeration pipe is reduced, the fluidization effect of biological fillers is improved, and the problem of sludge accumulation at the bottom of the biological contact oxidation pond is solved. The self-rotating aeration device is not limited in size, can be designed according to a specific pool type, has strong adaptability, has an aeration area close to full coverage, and can be used for not only newly building a pool type but also modifying the pool type.
Drawings
Fig. 1 is a plan view of an aeration system.
FIG. 2 is a cross-sectional view of the aeration system A-A.
FIG. 3 is a cross-sectional view of an aeration system B-B.
Fig. 4 is a detailed view of the aeration tube.
The drawings include: an aeration main pipe 1, an aeration branch pipe 2, a rotary aeration device 3, a bearing 4, aeration holes 5 and a rotary range 6 of the rotary aeration device.
Detailed Description
The invention is further described below with reference to the drawings and examples.
This embodiment of the invention is an aeration system for a biological contact oxidation tank, which mainly comprises a rotary aeration device 3 with a self-rotation function, an aeration main pipe 1, an aeration branch pipe 2 and a bearing 4. . The rotary aeration device 3 with the self-rotation function comprises a rotary tee joint, the opening of the middle section of the rotary tee joint faces upwards, and the rotary tee joint is connected with the branch pipe 2 through a bearing 4, so that the rotary aeration device 3 is positioned below the aeration branch pipe. The two sides of the rotary tee joint are respectively connected with the first perforation aeration pipe and the second perforation aeration pipe. The lengths of the first perforation aeration pipe and the second perforation aeration pipe are determined according to the distance between the aeration branch pipes, and the lengths of the first perforation aeration pipe and the second perforation aeration pipe are the same. The first perforation aeration pipe and the second perforation aeration pipe have different opening directions, and the distances between the opening positions and the center are complementary. The rotary tee joint and the perforated aeration pipe are connected in a socket-joint self-anchor mode, and the installation height of the aeration pipe air holes is guaranteed to be consistent through the limiter.
Further, one end openings of the first perforation aeration pipe and the second perforation aeration pipe are connected with the tee joint, a sealing plate is arranged at the other ends of the first perforation aeration pipe and the second perforation aeration pipe, end perforation is arranged on the sealing plate, and the perforated height of the end part is consistent with the perforated height of the second perforation aeration pipe of the first perforation aeration pipe.
The aeration main pipe and the aeration branch pipe form an aeration system framework. Wherein the diameter of the aeration main pipe is DN, the DN value is 150mm to 200mm, and the diameter of the aeration branch pipe is 40mm to 50mm. The aeration main pipe and the branch pipe are connected with each other by adopting the flat joint of the pipe top or the flat joint of the pipe center. The distance between the aeration branch pipes is 9X, and the X is 6 cm to 12 cm. The single branch pipe is provided with 1 to 2 sets of rotary aeration devices 3, the distance between the lines 6 of the rotary range of the rotary aeration devices 3 is X, and the rotary aeration devices can be properly amplified to avoid mutual collision.
The rotary aeration device 3 consists of a bearing, a rotary tee joint, a first perforated aeration pipe and a second perforated aeration pipe. Wherein the bearing is made of a material with higher corrosion resistance and abrasion resistance, such as stainless steel or high-temperature ceramic material. The first perforated aeration pipe and the second perforated aeration pipe are connected with the tee joint through socket self-anchor connection modes respectively, and the same installation height of the air holes of the perforated aeration pipes is guaranteed by adopting a limiting device. The diameters of the openings of the first perforation aeration pipe and the second perforation aeration pipe are 5mm, the opening direction is downward alpha degrees in the horizontal direction, the alpha value is 30, and the maximum amplification is 45. The first perforated aeration pipe and the second perforated aeration pipe have the same number of openings, but the positions of the openings at different distances from the center are respectively odd times X and even times X. Specifically, the opening position of the first perforated aeration pipe is l1=2a (X-1) +a, wherein X represents the X-th aeration hole from the center to the outer end, L1 is the distance from the aeration hole to the center, and a is the opening interval of the aeration hole, and is usually 5 cm to 20 cm; the opening position of the second perforated aeration pipe is L2=2aX, wherein X represents the X-th aeration hole from the center to the outer end, and L2 is the distance from the aeration hole to the center. The number of the openings of the single aeration pipe is determined according to the aeration quantity and the length of the perforated aeration pipe, and 4 air holes are formed in the single aeration pipe in fig. 3 for illustration only.
Preferably, the rotary tee joint is also provided with a speed limiting mechanism for limiting the rotating speed of the perforation aerator pipe to 10-50 revolutions per minute. On one hand, the rotary aeration pipes are prevented from rotating at different speeds due to the difference of friction coefficients, and on the other hand, the sealing material of the bearing 2 is prevented from being damaged due to the excessively high rotating speed.
Preferably, a first piston is arranged in the first perforated aeration pipe, a second piston is arranged in the second perforated aeration pipe, a reset spring is arranged between the first piston and the second piston, the surfaces of the first piston and the second piston form a brush shape, when high-pressure gas enters the perforated aeration pipe from an aeration air inlet pipe, the first piston and the second piston are pushed to move towards two sides, the first piston and the second piston can be accelerated to discharge water in the perforated aeration pipe outwards through an aeration hole when moving towards two sides, meanwhile, the brushes on the surfaces of the first piston and the second piston can clean the aeration hole, when the aeration is finished, the elasticity of the reset spring overcomes the resistance of the water, the first piston and the second piston move to the middle part of the perforated aeration pipe, and in order to ensure the normal operation, a limit block can be arranged on the inner wall of the perforated aeration pipe to limit the moving positions of the first piston and the second piston.
It differs from the prior art in that:
1. compared with the existing fixed perforated aerator pipe, the device provided by the invention realizes automatic rotation of the perforated aerator pipe by utilizing the gas driving force generated during aeration, increases the aeration range, reduces the aeration blind area, improves the fluidization of biological fillers, and reduces the sludge accumulation phenomenon at the bottom of the biological contact oxidation pond.
2. The perforated aeration pipe is connected with the aeration branch pipe through a bearing, and the bearing is made of a material with higher corrosion resistance and abrasion resistance, such as stainless steel or high-temperature ceramic material.
3. The aeration pipes with two types are adopted, the distances from the positions of the openings to the center are complementary, the aeration area can be further increased through rotation of the aeration pipes, and the sludge at the bottom of the tank is further removed.
4. The perforated aeration pipe adopts a socket self-anchor connection mode, and meanwhile, the installation height of the aeration pipe air holes is guaranteed to be consistent through the limiting device, so that the problem of uneven aeration caused by the installation error of the aeration pipe is reduced.
5. The direction of the opening of the aeration pipe is 30 degrees downwards in the horizontal direction, so that the rotary power can be provided for the aeration pipe, and the scouring effect of the bottom of the tank is simultaneously considered.
6. An air hole is arranged at the tail end of the aeration pipe, so that the influence range of the aeration pipe can be prolonged, and the aeration blind area can be further reduced.
7. The aeration device can be arranged in the biological contact oxidation pond, has light weight and simple and convenient installation, can be widely used for various newly-built or modified projects, and improves the aeration effect of the biological contact oxidation pond.
The foregoing is only a preferred embodiment of the invention. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit of the invention, the scope of which is set forth in the appended claims.
Claims (5)
1. The aeration system for the biological contact oxidation pond comprises an aeration main pipe and a plurality of aeration branch pipes connected with the aeration main pipe, and is characterized in that each aeration branch pipe is at least connected with a group of rotary aeration devices, each rotary aeration device comprises a rotary tee joint, the opening of the middle end of each rotary tee joint is upward and is connected with the aeration branch pipe through a bearing, one end of each rotary tee joint is connected with a first perforated aeration pipe, the other end of each rotary tee joint is connected with a second perforated aeration pipe, and the openings of the first perforated aeration pipe and the second perforated aeration pipe face to two sides respectively, so that gas reaction force generated by the rotary aeration devices during aeration pushes the perforated aeration pipes to form automatic rotation; the opening position of the first perforation aeration pipe is L1=2a (X-1) +a, wherein X represents the X-th aeration hole from the center to the outer end, L1 is the distance from the aeration hole to the center, and a is the opening interval of the aeration hole, and the value is 5 cm to 20 cm; the opening position of the second perforated aeration pipe is L2=2aX, wherein X represents the X-th aeration hole from the center to the outer end, and L2 is the distance from the aeration hole to the center; the tip that first perforation aeration pipe and second perforated aeration pipe is equipped with the shrouding, be provided with the tip perforation on the shrouding, adopt two types aeration pipe, trompil position is to center distance complementation, can further improve the aeration area through the aeration pipe rotation.
2. An aeration system for a biological contact oxidation pond according to claim 1, wherein the perforated aeration pipe has an opening diameter of 4-5 mm and an opening direction of 30-45 degrees downward in a horizontal direction.
3. An aeration system for a biological contact oxidation pond according to claim 1, wherein the diameter of the aeration main pipe is DN, DN is 150mm to 200mm, and the diameter of the aeration branch pipe is 40mm to 50mm.
4. An aeration system for a biological contact oxidation pond according to claim 1, wherein the gas design flow rate in the first perforated aeration pipe and the second perforated aeration pipe is 5 m/s-10 m/s.
5. An aeration system for a biological contact oxidation pond according to claim 1, wherein the bearing is made of corrosion-resistant and friction-resistant materials, and is made of stainless steel or high-temperature ceramics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711033967.XA CN107840445B (en) | 2017-10-30 | 2017-10-30 | Aeration system for biological contact oxidation pond |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711033967.XA CN107840445B (en) | 2017-10-30 | 2017-10-30 | Aeration system for biological contact oxidation pond |
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| Publication Number | Publication Date |
|---|---|
| CN107840445A CN107840445A (en) | 2018-03-27 |
| CN107840445B true CN107840445B (en) | 2023-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711033967.XA Active CN107840445B (en) | 2017-10-30 | 2017-10-30 | Aeration system for biological contact oxidation pond |
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| CN (1) | CN107840445B (en) |
Families Citing this family (1)
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| CN109650532A (en) * | 2019-02-14 | 2019-04-19 | 安吉国千环境科技有限公司 | A kind of unpowered rotation aeration plate for sewage treatment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002282887A (en) * | 2001-03-28 | 2002-10-02 | Sumitomo Heavy Ind Ltd | Aeration tank |
| CN202643409U (en) * | 2012-05-31 | 2013-01-02 | 北京碧水源膜科技有限公司 | Novel aeration structure of membrane biological reactor (MBR) |
| CN103988806A (en) * | 2014-05-08 | 2014-08-20 | 合肥市航嘉电子技术有限公司 | Novel aerator and circulating aeration system thereof |
| CN104496045A (en) * | 2014-12-18 | 2015-04-08 | 扬州大学 | Submersed dry-chamber blast aeration machine |
| CN204529432U (en) * | 2015-01-15 | 2015-08-05 | 孟涛 | A kind of rotation aerating apparatus |
| CN204981309U (en) * | 2015-05-06 | 2016-01-20 | 北京动力康环保科技有限公司 | Prevent perforation aeration equipment of long -pending mud of pipeline |
| CN206407967U (en) * | 2017-01-21 | 2017-08-15 | 赖泽民 | A kind of rotary type efficient high intensity aeration waste water processing system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3533415B2 (en) * | 1998-06-25 | 2004-05-31 | 株式会社荏原製作所 | Underwater stirring and aeration equipment |
-
2017
- 2017-10-30 CN CN201711033967.XA patent/CN107840445B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002282887A (en) * | 2001-03-28 | 2002-10-02 | Sumitomo Heavy Ind Ltd | Aeration tank |
| CN202643409U (en) * | 2012-05-31 | 2013-01-02 | 北京碧水源膜科技有限公司 | Novel aeration structure of membrane biological reactor (MBR) |
| CN103988806A (en) * | 2014-05-08 | 2014-08-20 | 合肥市航嘉电子技术有限公司 | Novel aerator and circulating aeration system thereof |
| CN104496045A (en) * | 2014-12-18 | 2015-04-08 | 扬州大学 | Submersed dry-chamber blast aeration machine |
| CN204529432U (en) * | 2015-01-15 | 2015-08-05 | 孟涛 | A kind of rotation aerating apparatus |
| CN204981309U (en) * | 2015-05-06 | 2016-01-20 | 北京动力康环保科技有限公司 | Prevent perforation aeration equipment of long -pending mud of pipeline |
| CN206407967U (en) * | 2017-01-21 | 2017-08-15 | 赖泽民 | A kind of rotary type efficient high intensity aeration waste water processing system |
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| CN107840445A (en) | 2018-03-27 |
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