CN201381249Y - Jet aeration device - Google Patents
Jet aeration device Download PDFInfo
- Publication number
- CN201381249Y CN201381249Y CN200920141908U CN200920141908U CN201381249Y CN 201381249 Y CN201381249 Y CN 201381249Y CN 200920141908 U CN200920141908 U CN 200920141908U CN 200920141908 U CN200920141908 U CN 200920141908U CN 201381249 Y CN201381249 Y CN 201381249Y
- Authority
- CN
- China
- Prior art keywords
- jet
- pipe
- membrane bioreactor
- aerator
- efflux
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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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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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
A jet aeration device comprises a jet aeration machine arranged inside a membrane bioreactor and a gas distribution water pipe which is installed inside the membrane bioreactor and is connected with the jet aeration machine through a pipeline. The jet aeration machine comprises a pump body installed below the liquid surface of the membrane bioreactor, a gas inlet pipe which is provided with a gas inlet positioned above the liquid surface of the membrane bioreactor and controls the gas inlet quantity through a ball valve, and jet pipe which is provided with a jet orifice connected with the pipe connector of the gas distribution water pipe and is used for vertically and downwardly jetting, wherein the pump body is positioned inside or on one side of a hollow fibrous membrane component of the membrane bioreactor, and a fixing position is arranged in the middle of the jet pipe. The jet aeration device remarkably increases the contact time of oxygen gas with microorganisms, and increases oxygen transfer rate by 35% compared with that of blast aeration. The process of rinsing the hollow fibrous membrane component has gas disturbance as well as mixing agitation of activated sludge and water, so as to effective prevent pollution of the hollow fibrous membrane component. The jet aeration device has the advantages of convenient installation, high equipment integration degree, small noise, and equipment floor area reduction; and can be directly installed in a membrane bioreactor region.
Description
Technical field
The utility model relates to water treatment, especially relates to a kind of efflux aerator.
Background technology
Efficiently, reasonably aerating system is the important factor of controlling diaphragm bio-reactor steady running.Existing membrane bioreactor mostly adopts external placed type gas blower aeration.Because the gas blower boring aeration is adopted in the membrane bioreactor particular requirement in lower end, film district.Its coefficient of oxygen utilization has only 6～7%.And the gas blower aeration exists energy consumption height, noise is big, oxygen utilization rate is low, integrated degree is not high defective.
Summary of the invention
Technical problem to be solved in the utility model is the above-mentioned defective that overcomes the gas blower aeration, provides a kind of decentralized type sewage that is applicable to handle and the efflux aerator of recycling integration apparatus.
Technical problem of the present utility model is achieved by the following technical programs.
The characteristics of this efflux aerator are:
Comprise being built in the jet aerator in the membrane bioreactor and being installed in the interior gas distribution water pipe of membrane bioreactor region that described gas distribution water pipe links to each other with described jet aerator by pipeline.
Described jet aerator comprises the pump housing below the liquid level that is installed on membrane bioreactor, the above inlet pipe by ball valve control air input of liquid level that inlet mouth is positioned at membrane bioreactor, and jet orifice is connected the jet pipe that sprays vertically downward with the tube stub of gas distribution water pipe, the described pump housing is between the hollow fiber film assembly of membrane bioreactor or a side, and the centre of described jet pipe is provided with the fixed position.
The gas-liquid-solid mixture that contains microorganism in the jet aerator suction membrane bioreactor is sprayed by jet pipe, is uniformly distributed in through the gas distribution water pipe it to be washed away below the hollow fiber film assembly of membrane bioreactor.Both provided oxygen, significantly improved coefficient of oxygen utilization, the disturbance, active sludge of gas and the stirring that mixes of water were arranged in the process of washing away again to microorganism.
Technical problem of the present utility model is achieved by following further technical scheme.
Described gas distribution water pipe links to each other with described jet aerator by pipeline, is to link to each other with the jet pipe exit end face of jet aerator with the corrosion-resistant pipe joint.
Described jet aerator is fixed between the membrane stack of independently cutting apart of hollow fiber film assembly of membrane bioreactor.
Described jet aerator water-in is lower than the low liquid level that device is set, and negative pressure is given birth in the intravital high-speed liquid miscarriage of jet aerator pump, air is sucked in the blast pipe mix back ejection downwards at a high speed with the gas-liquid-solid mixture that contains microorganism in jet pipe.
Described gas distribution water pipe be provided be spacedly distributed under the hollow fiber film assembly of membrane bioreactor or under around isometric smaller branch pipe, closed at both ends and drainage tube that both sides are connected with described smaller branch pipe, and the tube stub that is connected with jet pipe.
One end of described smaller branch pipe is communicated with drainage tube and the other end sealing, and thereunder be provided with opening to down either side and vertical line angle be ± (44 °～46 °) two arrange the solarization air cap that is spacedly distributed.
Described solarization air cap diameter is Φ 4～10mm.
Described solarization air cap is positioned at the hollow fiber film assembly bottom 100～500mm of membrane bioreactor.
The distance that described solarization air cap is spacedly distributed is 100～300mm.
Described drainage tube, smaller branch pipe are corrosion resistant pipelines.
The beneficial effect that the utility model is compared with the prior art is:
The gas-liquid-solid three-phase mixture that contains microorganism in the jet aerator suction membrane bioreactor sprays by jet pipe, significantly improve the duration of contact of oxygen and microorganism, make oxygen and water thorough mixing, obviously improve the oxygen supply effect, improve 35% than blast aeration oxygen transfer rate.To the disturbance of the existing gas of the process of washing away of hollow fiber film assembly, there are active sludge and water blended to stir again, can effectively prevent the pollution of hollow fiber film assembly; And it is convenient that jet aerator is installed, and can be directly installed on the membrane biological reaction district, the device integration height, and noise is little, also reduces occupation area of equipment.
Description of drawings
Fig. 1 is that the utility model embodiment one is installed on two groups of aerators between the film and faces structure diagram;
Fig. 2 is the corresponding plan structure sketch of Fig. 1;
Fig. 3 is that the aerator that the utility model embodiment two is installed on two groups of film one sides is faced structure diagram;
Fig. 4 is the corresponding plan structure sketch of Fig. 3.
Embodiment
Contrast accompanying drawing and the utility model is further described below in conjunction with embodiment.
Embodiment one
A kind of decentralized type sewage that is applicable to is as shown in Figure 1, 2 handled and the efflux aerator of recycling integration apparatus, comprises jet aerator that is built in the membrane bioreactor and the gas distribution water pipe that is installed in the membrane bioreactor region.The gas distribution water pipe links to each other with the jet pipe exit end face of jet aerator by corrosion-resistant pipe joint 5.Jet aerator is fixed between the membrane stack of independently cutting apart of hollow fiber film assembly 8 of membrane bioreactor.
Jet aerator comprises the pump housing 2 below the liquid level that is installed on membrane bioreactor, the above inlet pipe by ball valve control air input of liquid level that inlet mouth 3 is positioned at membrane bioreactor, and jet orifice is connected the jet pipe 4 that sprays vertically downward with the tube stub 5 of gas distribution water pipe, the pump housing 2 of jet aerator is between the hollow fiber film assembly 8 of membrane bioreactor, and the centre of jet pipe is provided with the fixed position.Jet aerator water-in 1 is lower than the low liquid level that device is set, and negative pressure is given birth in the intravital high-speed liquid miscarriage of jet aerator pump, air is sucked in the blast pipe mix back ejection downwards at a high speed with the gas-liquid-solid mixture that contains microorganism in jet pipe.
The gas distribution water pipe be provided be spacedly distributed under the hollow fiber film assembly 8 of membrane bioreactor or under around isometric corrosion resistant smaller branch pipe 7, closed at both ends and corrosion resistant drainage tube 6 that both sides are connected with smaller branch pipe 7, and the corrosion-resistant pipe joint 5 that is connected with the jet pipe exit end face of jet aerator.One end of smaller branch pipe 7 is communicated with drainage tube 6 and the other end sealing, and thereunder being provided with opening is the solarization air cap that ± 45 ° two rows are spacedly distributed to down either side and vertical line angle, the solarization air cap diameter is Φ 6mm, be positioned at the hollow fiber film assembly 8 bottom 300mm of membrane bioreactor, the distance that is spacedly distributed is 200mm.
This embodiment prevents that the jet-flow aeration method that hollow fiber film assembly pollutes from having following steps successively:
1) active sludge and the waste water with membrane bioreactor region enters the jet aerator pump housing 2 by jet aerator water-in 1, and above-mentioned mud mixture forms high speed mud mixture stream through the jet aerator pump housing 2, forms negative pressure in jet pipe 4;
2) air sucks the jet pipe 4 that is connected with drainage tube 6 by jet aerator inlet pipe 3 under suction function, is mixed into the gas-liquid-solid mixture that contains microorganism with mud mixture;
3) contain the gas-liquid-solid mixture of microorganism by smaller branch pipe 7 ejections that are provided with uniform distribution solarization air cap below hollow fiber film assembly 8 below drainage tube 6 guiding, to washing away of hollow fiber film assembly.
According to the gas-water ratio of setting 10 to 1, day output be the dispersant type domestic wastewater of 50t/d handle and equipment for reclaiming in be arranged on mounting means between the hollow fiber film assembly 8 according to jet aerator, with water inlet chemical oxygen demand COD cr is that the sanitary sewage of 250mg/L is the water inlet water source, this embodiment contrasts with existing blast aeration mode, and the service data of membrane bioreactor is as shown in the table:
| Project | Jet-flow aeration | Blast aeration |
| Water outlet CODcr (mg/litre) | 20 | 30 |
| Power consumption cost (unit/ton) | 0.15 | 0.3 |
| Water outlet water flux (m 3/m 2·d) | 0.24 | 0.20 |
| The film cleaning interval (moon) | 3 | 2.5 |
Embodiment two
Another kind shown in Fig. 3,4 is applicable to that decentralized type sewage is handled and the efflux aerator of recycling integration apparatus, and is basic identical with structure, the impact of performance of embodiment one.Difference is: the pump housing 2 of jet aerator is positioned at a side of hollow fiber film assembly 8.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field; under the prerequisite that does not break away from the utility model design, make some alternative or obvious modification that are equal to; and performance or purposes are identical, then should be considered as belonging to the protection domain that the utility model is determined by claims of being submitted to.
Claims (10)
1. efflux aerator is characterized in that:
Comprise being built in the jet aerator in the membrane bioreactor and being installed in the interior gas distribution water pipe of membrane bioreactor region that described gas distribution water pipe links to each other with described jet aerator by pipeline;
Described jet aerator comprises the pump housing below the liquid level that is installed on membrane bioreactor, the above inlet pipe by ball valve control air input of liquid level that inlet mouth is positioned at membrane bioreactor, and jet orifice is connected the jet pipe that sprays vertically downward with the tube stub of gas distribution water pipe, the described pump housing is between the hollow fiber film assembly of membrane bioreactor or a side, and the centre of described jet pipe is provided with the fixed position.
2. efflux aerator according to claim 1 is characterized in that:
Described gas distribution water pipe links to each other with described jet aerator by pipeline, is to link to each other with the jet pipe exit end face of jet aerator with the corrosion-resistant pipe joint.
3. efflux aerator according to claim 1 and 2 is characterized in that:
Described jet aerator is fixed between the membrane stack of independently cutting apart of hollow fiber film assembly of membrane bioreactor.
4. efflux aerator according to claim 3 is characterized in that:
Described jet aerator water-in is lower than the low liquid level that device is set.
5. efflux aerator according to claim 4 is characterized in that:
Described gas distribution water pipe be provided be spacedly distributed under the hollow fiber film assembly of membrane bioreactor or under around isometric smaller branch pipe, closed at both ends and drainage tube that both sides are connected with described smaller branch pipe, and the tube stub that is connected with jet pipe.
6. efflux aerator according to claim 5 is characterized in that:
One end of described smaller branch pipe is communicated with drainage tube and the other end sealing, and thereunder is provided with opening and is+44 °～+ 46 ° or-44 °～-46 ° two to down either side and vertical line angle and arranges the solarization air cap that is spacedly distributed.
7. efflux aerator according to claim 6 is characterized in that:
Described solarization air cap diameter is Φ 4～10mm.
8. efflux aerator according to claim 7 is characterized in that:
Described solarization air cap is positioned at the hollow fiber film assembly bottom 100～500mm of membrane bioreactor.
9. efflux aerator according to claim 8 is characterized in that:
The distance that described solarization air cap is spacedly distributed is 100～300mm.
10. efflux aerator according to claim 9 is characterized in that:
Described drainage tube, smaller branch pipe are corrosion resistant pipelines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920141908U CN201381249Y (en) | 2009-03-09 | 2009-03-09 | Jet aeration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920141908U CN201381249Y (en) | 2009-03-09 | 2009-03-09 | Jet aeration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201381249Y true CN201381249Y (en) | 2010-01-13 |
Family
ID=41524725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920141908U Expired - Lifetime CN201381249Y (en) | 2009-03-09 | 2009-03-09 | Jet aeration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201381249Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001796A (en) * | 2010-12-01 | 2011-04-06 | 厦门理工学院 | Novel membrane bioreactor and treatment process thereof for industrial waste |
-
2009
- 2009-03-09 CN CN200920141908U patent/CN201381249Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001796A (en) * | 2010-12-01 | 2011-04-06 | 厦门理工学院 | Novel membrane bioreactor and treatment process thereof for industrial waste |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100113 Effective date of abandoning: 20090309 |