CN201809227U - Multifunctional high-efficiency aerator - Google Patents
Multifunctional high-efficiency aerator Download PDFInfo
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- CN201809227U CN201809227U CN2010202676209U CN201020267620U CN201809227U CN 201809227 U CN201809227 U CN 201809227U CN 2010202676209 U CN2010202676209 U CN 2010202676209U CN 201020267620 U CN201020267620 U CN 201020267620U CN 201809227 U CN201809227 U CN 201809227U
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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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Abstract
The utility model provides an improved self-suction oxygen-increasing aerating device. The multifunctional high-efficiency aerator is characterized in that the distance from an air suction impeller to the water surface ranges from 0.3m to 1/3 of the water depth; and one layer or more layers of mixing impellers are coaxially arranged below the air suction impeller and a dispersion impeller. Compared with the prior art, in the utility model, the aerating and mixing are integrated so that the aerator can be applicable to various water-depth environment; the aerating energy consumption can be reduced, the service area is enlarged and the oxygen transferring rate can be improved, the oxygen filling effect is good; and simultaneously three phases of the gas, solid and liquid can be sufficiently mixed; furthermore, free shift of the aerobic condition, the hypoxia condition and the anaerobic condition used for sewage treatment technology can be realized conveniently; and the defects that the self-suction oxygen-increasing aeration in the prior art has single function and single running mode. Defoaming pulp is added so that the air bubbles on the surface of an aerating pool can be eliminated; and the filled oxygen can be increased. In the utility model, the self-suction oxygen-increasing aerating device has the advantages of small aerating power consumption, high oxygen mass-transferring speed and good oxygen filling effect, has the mixing function simultaneously, and has flexible running process.
Description
Technical field
Utility model is the improvement to self-priming oxygenation aerating apparatus, and it is little to relate in particular to a kind of consumed power, the oxygen transfer rate height, and the aeration service area is big, integrates the multifunctional high-efficiency aerator of aeration-stir.
Background technology
People have developed the self-priming oxygenation aerating apparatus of impeller under water for improving paddle aerator to dissolved oxygen in water efficient.This structure aerating apparatus, air-breathing under water, diffusion vane is arranged at hollow or the sleeve rotating shaft is not held, high speed rotating by impeller produces the relatively low pressure district at the rotating shaft near zone, water surface air is sucked by tubular shaft or sleeve, and will suck air by water high speed rotary blade and break up, be diffused into water body on every side, realize aeration performance., negative pressure relatively low because of temperature under water sucks air, and bubble limit rising edge dissolving under water, makes that sucking air is dissolving in big solid, and dissolved oxygen increases, thereby has improved the dissolved oxygen dynamic efficiency.For example:
The self-priming oxygenating machine of Chinese patent CN2076985, periphery is set below the sleeve rotating shaft the turbine type paddle of guide shell and the gas guard that looses, and will suck air by the rotation of turbine paddle by the directional stream-guidance tube and spread downwards.
Chinese patent CN1106363 liquid aerating apparatus is provided with water screw in air guide rotating shaft lower end.
Chinese patent CN2093174 has the pond aerator of turbine jet apparatus, by the air-breathing turbine on the liquid level and under water quill shaft do not hold the gas impeller that looses to form, increase air capacity in the downward water by air-breathing turbine on the liquid level.
The electronic aerator of Chinese patent CN2171598 has changed air-breathing, diffusion vane, and employing has fine hole line blade multi-disc and stacks, and radially forms several rows of aperture at impeller, sucks air and discharges the formation small bubbles by aperture.
The self-priming oxygenation of the above-mentioned rotary blade under water oxygen device that exposes to the sun, no matter blade profile how, an one common feature: air-breathing, diffusion vane all is arranged at the rotating shaft end, and has only an impeller.Thus, have only absorbing impeller once to sucking the cutting of air, breaing up property of bubble is not good enough, and bubble is relatively large, and dissolved oxygen efficiency can be too not high, and poor because of the bubble diffustivity, the aeration service area is little; Secondly, must strengthen the impeller degree of depth for deep pool aeration, the absorbing impeller degree of depth is big, and proportional because of the water pressure and the depth of water that air-breathing need overcome, air-breathing required drive is just big, thereby has increased the aeration power consumption; Air-breathing, diffusion vane was provided with shallow, bottom dissolved oxygen weak effect not only, and can influence whole dissolved oxygen amount and dissolved oxygen uniformity coefficient, be unfavorable for water technology; Besides, air-breathing, the gas effect of loosing that single absorbing impeller all has only, limited to the water body stirring capacity, be difficult for making mud, air, water three-phase thorough mixing, also must dispose mixing stirring device separately.Though by improving blade profile, for example adopt the turbine type paddle, its inspiratory capacity still is difficult to improve, and causes dissolved oxygen efficiency not high enough.
In addition, the existing self-priming oxygenation aerating apparatus of rotary blade under water, and other aerating apparatuss, all unique only have aeration performance, so can only be used for aerobic process, range of application, function are narrow relatively, can not satisfy some water technology requirement.
Above-mentioned deficiency still has is worth improved place.
The utility model content
The utility model purpose is to overcome above-mentioned the deficiencies in the prior art, provides a kind of consumed power little, the oxygen transfer rate height, and the aeration service area is big, integrates aeration-stir, the multifunctional high-efficiency aerator of the solid good mixing effect of gas-liquid.
The utility model purpose realizes, main design is to make air-breathing, diffusion vane be arranged under water 0.3m to the depth of water 1/3 place, suck air and at the bottom of the pond, spread the paddle wheel that relies on coaxial setting, reach and both reduce air-breathing power consumption, can strengthen again, improve oxygen transfer efficiency bubble cutting action in the water body, paddle wheel also makes gas, solid, liquid three-phase thorough mixing simultaneously, and can enlarge molten gas service area, thus overcome the deficiencies in the prior art, realize the utility model purpose.Specifically, the utility model multifunctional high-efficiency aerator, comprise band bleed telescopic rotating shaft or hollow axle, be arranged on air-breathing, diffusion vane in the rotating shaft, it is characterized in that absorbing impeller apart from the water surface degree of depth be 0.3m between the depth of water 1/3, air-breathing, diffusion vane below is coaxial one or more layers paddle wheel.
Utility model is said:
Air-breathing, diffusion vane, its function is same as the prior art, produces the low pressure area that relative atmosphere forces down near being rotated in the impeller center under water, and water surface air is sucked in the water by sleeve or tubular shaft, and by impeller cut, cut into small bubbles, along with impeller rotation is spread in water.According to this principle, self-priming oxygenation aeration absorbing impeller all can use in the prior art, and for example turbine fan blade profile, disc rotor etc. wherein are preferably and adopt the turbofan blade profile, have big relatively gettering efficiency.Absorbing impeller, a kind of be preferably to adopt end plate impeller (similar centrifugal pump closed type impeller, blade are positioned at up and down between end plate) is up and down arranged, the impeller central core region that more helps between two end plates of end plate produces low pressure area up and down, help improving, thereby improve dissolved oxygen rate from inspiratory capacity.Excessive for avoiding strengthening the air-breathing impeller center air pocket that causes, and reduce inspiratory capacity, a kind of mode can have vacancy section on the impeller bottom plate, prevent that by the current guide functions air-breathing gathering to reduce air pocket, improving inspiratory capacity.In addition, for further improving inspiratory capacity, a kind of more preferably impeller vane adopts the hollow type blade construction, and make hollow blade be communicated with (by hollow blade air guide in water) with rotating shaft air guide outlet, this structure more helps reducing near the pressure of impeller, can obtain bigger air-breathing pressure reduction, help from sucking more air.
Absorbing impeller be provided with the degree of depth for 0.3m under water to the depth of water 1/3 place, economical appropriate interval for testing.If be provided with shallowly, can cause the liquid level indent to influence dissolved oxygen efficiency because of impeller rotation produces eddy flow, the shallow meeting of serious mistake causes can not be air-breathing; It is excessive that the degree of depth is set, and can increase because of the depth of water causes air-breathing power greatly again, increases energy consumption.Dark according to more use water treating pond, it is that underwater 0.8m is to the depth of water 1/3 place that the degree of depth wherein better is set.
Hollow axle or sleeve be the air outlet under water, can be arranged on air-breathing, diffusion vane below with prior art, and the present invention is a kind of better to be that the air outlet is arranged between each blade of impeller, more can improve the smash effect of absorbing impeller to bubble.
Paddle wheel, major function is to make water body produce stir shaft to plug-flow by rotation, and the bubble that on the one hand upper strata is diffused to water body is guided the below at the bottom of the pond, increases the oxygen meltage by come-up again, bubble is dispersed in than big area, has enlarged the aeration service area; Paddle wheel also has concurrently to mix and stirs and the effect of cutting bubble on the other hand, reflection was risen or is risen along pool wall at the bottom of current were run into the pond downwards, stream, up-flow formation pond internal recycle fall, both can avoid aeration and stir the dead angle, lower floor's paddle can take up pool bottom sludge again, make mud be suspended state, more help water, gas, solid three-phase fully contacts mixing, has increased the rate of mass transfer and the utilization ratio of oxygen especially.Require difference according to tank depth and service area, paddle wheel can alternately be provided with a plurality of.The paddle wheel form also can be multiple, wherein is preferably axial flow type.The first layer paddle wheel and air-breathing, diffusion vane spacing are preferably 〉=50cm, and the too small meeting of spacing causes using paddle wheel to increase, waste power.
In addition:
Can also the rotating shaft motor rotating will be driven, be set to variable frequency control, can increase the handiness of aerator, change rotating speed by frequency transformer, realize the transformation of aeration pattern and stir mode, i.e. the rotating speed difference, aerator is operated in aeration respectively, stirs working order, be main working order perhaps, adapting to the different requirements of water technology, and need not additionally increase equipment with stirring.
Can also above air-breathing, diffusion vane is coaxial, set up and slightly be dipped in froth breaking oar in the water, froth breaking oar major function is the foam chopping that the water surface is produced, its structure formation only needs the liquid level bubble to be smashed all can, be not particularly limited, for example a kind of simply be a disk one or several cross bar peripheries some vertical quarter butts are set, rotation produce cutting action bubble is beaten (cutting) broken.The chopping bubble, up-flow by the pond internal recycle and fall stream liquid level is brought in constant renewal in, the foam of liquid level is brought at the bottom of the pond simultaneously, foam is changed the local thickness of bubble surface by drive, current make foam surface pressure inequality simultaneously, thereby cause foamy to break, not only reach the froth breaking purpose, satisfy the sewage treatment process requirement, and increased aeration rate in water, because eddy flow causes water surface depression, ambient water papula foam constantly flows into by chopping to be brought in the water, thereby the bubble of pond face all can be eliminated.
The utility model multifunctional high-efficiency aerator, with respect to the self-priming oxygenation aerating apparatus of prior art, because air-breathing, diffusion vane are moved setting, and below dispose one or more layers paddle wheel with big spacing, make aeration, stirring integratedization, go for various depth of water environment, not only reduced aeration energy consumption, and the stirring chopping effect of cooperation impeller, service area and oxygen transfer rate have been improved, improved the rate of mass transfer of oxygen, oxidation effect is good, also simultaneously can make gas, solid, liquid three-phase thorough mixing.Air-breathing, diffusion vane increases end plate up and down, more helps the generation of air-breathing low pressure area, and more identical blade profile can improve inspiratory effects and inspiratory capacity.The blade hollow structure, inspiratory effects is better.Be equipped with the variable-frequency and variable-speed device, can realize conveniently that aerobic, the anoxic of sewage treatment process and anaerobic condition freely switch, and have broken through the self-priming oxygenation aeration of prior art, function singleness, the single deficiency of operational mode.Increase the froth breaking slurry, not only can eliminate the aeration tank open bubble, and bubble is brought in the water with circulating water flow, also have the oxygenation effect simultaneously.The self-priming oxygenation aerating apparatus of utility model, the aeration power consumption is little, oxygen transfer speed height, oxidation effect is good, has agitating function simultaneously concurrently, and operation process is flexible and changeable, for being different from prior art characteristics and advantage.
Below in conjunction with two exemplary embodiments; utility model essence is further understood in exemplary illustration and help; but the embodiment detail only is for utility model is described; do not represent utility model design whole technical schemes down; therefore should not be construed as the total technical scheme of utility model is limited; some are In the view of the technician; the unsubstantiality that does not depart from the utility model design increases and/or change; for example change or replace, all truely use novel protected scope so that technical characterictic with same or similar technique effect is simple.
Description of drawings
Fig. 1 is a utility model multifunctional high-efficiency aerator structural representation.
Fig. 2 is a utility model multifunctional high-efficiency aerator aeration work synoptic diagram.
Fig. 3 is a kind of air-breathing, diffusion vane plan structure synoptic diagram.
Fig. 4 is another kind of air-breathing, diffusion vane plan structure synoptic diagram.
Embodiment
Embodiment 1: referring to Fig. 1,2,3, the utility model multifunctional high-efficiency aerator, comprise variable-frequency motor 1, the step-down gear 2 that is arranged at anchor 4 tops, the frequency transformer 3 of controlling motor speed, be fixed on the hollow axle 10 on the speed reducer output shaft, rotating shaft water surface epimere has suction hole 5, alternate from top to bottom froth breaking oar 6, air-breathing, diffusion vane 7, two layers of paddle wheel 8 of 1.1 meters of phase spacings up and down, the bottom concentrically located device 9 of being coaxially arranged with successively under the liquid level in the rotating shaft.Absorbing impeller 7 is the turbine fan blade profile, two respectively have end plate 11 up and down, 12 in each blade has the air outlet 13 that is communicated with hollow axle, (4 meters ponds are dark to be arranged on dark 1/3 place, pond, 1.3 meters, underwater), froth breaking oar 6 is horizon bar or disk, and periphery has some vertical quarter butts, and quarter butt is immersed in the water when the position being set making work.
Aerator work (Fig. 2), the air-breathing turbine 7, paddle wheel 8 and the froth breaking oar 6 that are driven on tubular shaft 10 and the axle by motor 1 rotate, for example surpass aeration quick passage critical speed (200-450r/min), near air-breathing, diffusion vane 7 rotating shaft centers, produce enough big negative pressure, water surface top air is sucked in a large number by the pore 5 on the tubular shaft 10, via tubular shaft 10 from production well ejection between air-breathing, diffusion turbine 7 blades, under air-breathing turbine 7 shearings and the effect of dynamic pressure change power, become very tiny microbubble.Two layers of paddle wheel 8 coaxial rotation in below simultaneously, produce downward eddy flow, the bubble upper strata is air-breathing, that diffusion vane 7 is introduced is brought at the bottom of the pond, and back reflection rose at the bottom of current were run into the pond downwards, thereby realized abundant aeration, current are to fall stream and up-flow form at the pond internal recycle simultaneously, effectively avoided the dead angle generation, simultaneously lower floor's paddle wheel 8 takes up pool bottom sludge, makes mud be suspended state, the gas, liquid, solid three-phase is fully contacted, and has increased the rate of mass transfer and the utilization ratio of oxygen.6 rotations of froth breaking oar produce the foam chopping with water surface eddy flow, by stirring the up-flow that forms and falling stream liquid level is brought in constant renewal in, bring the liquid level foam into the pool inner water body, foam is changed bubble surface local thickness by drive, current make foam surface pressure inequality simultaneously, thereby cause lather collapse, not only reach the froth breaking purpose, satisfy the sewage treatment process requirement, and increased aeration rate in water.
When not needing aeration, reduce motor speed, air-breathing, diffusion vane 7 peripheral negative pressure are not enough to outside air is sucked, be in substantially to stop the aeration working order, this moment aerator to be operated in be main working order to mix mainly.
Aerator switches to the stir mode initial stage by the aeration pattern, also has the finite concentration dissolved oxygen in the water, and at this moment, treating water is an anaerobic environment; When dissolved oxygen approach exhaustion gradually, in the pond anaerobic environment.Realize control thus, treating pond is switched between aerobic-anoxic-anaerobism pattern, satisfied three kinds of required environment of sewage denitrification and dephosphorization by frequency transformer 3.According to the treatment process requirement, can the periodically-varied motor operating state, realizing that with the pond aerobic-anoxic-anaerobism pattern switches.
Embodiment 2: referring to Fig. 4, as embodiment 1, oxygen uptake turbine blade 14 is hollow structure, and vacancy section 15 on the bottom plate, and hollow axle air outlet 13 is communicated with each hollow blade.
To those skilled in the art; under this patent design and specific embodiment enlightenment; some distortion that can directly derive or associate from this patent disclosure and general knowledge; those of ordinary skills will recognize also can adopt additive method; or the substituting of known technology commonly used in the prior art; and the mutual various combination between feature; for example air-breathing; diffusion vane and paddle wheel adopt other blade profiles; hollow axle replaces with rotating shaft and bleed sleeve; foam is few for producing; also can omit the froth breaking oar; or the like unsubstantiality change, can be employed equally, can both realize this patent representation function and effect; launch for example no longer one by one to describe in detail, all belong to this patent protection domain.
Claims (11)
1. multifunctional high-efficiency aerator, comprise band bleed telescopic rotating shaft or hollow axle, be arranged on air-breathing, diffusion vane in the rotating shaft, it is characterized in that air-breathing, diffusion vane apart from the water surface degree of depth be 0.3m to the depth of water 1/3, air-breathing, diffusion vane below is coaxial one or more layers paddle wheel.
2. according to the described multifunctional high-efficiency aerator of claim 1, it is characterized in that air-breathing, diffusion vane is that 0.8m is to the depth of water 1/3 apart from the water surface degree of depth.
3. according to the described multifunctional high-efficiency aerator of claim 1, it is characterized in that air-breathing, diffusion vane is the turbine fan blade profile.
4. according to the described multifunctional high-efficiency aerator of claim 1, it is characterized in that between air-breathing, diffusion vane blade the air outlet that is communicated with hollow axle being arranged.
5. according to claim 1,2,3 or 4 described multifunctional high-efficiency aerators, it is characterized in that there is end plate air-breathing, diffusion vane top and bottom.
6. according to the described multifunctional high-efficiency aerator of claim 5, it is characterized in that air-breathing, diffusion vane blade is the hollow type blade, rotating shaft or sleeve air guide outlet are communicated with hollow blade.
7. according to the described multifunctional high-efficiency aerator of claim 5, it is characterized in that on air-breathing, the diffusion vane bottom plate vacancy section being arranged.
8. according to the described multifunctional high-efficiency aerator of claim 1, it is characterized in that air-breathing, diffusion vane top slightly is dipped in the froth breaking oar in the water when work is arranged.
9. according to the described multifunctional high-efficiency aerator of claim 1, it is characterized in that paddle wheel is an axial flow type.
10. according to the described multifunctional high-efficiency aerator of claim 1, it is characterized in that the concentrically located device is arranged at the rotating shaft bottom.
11., it is characterized in that driving the rotating shaft rotary power and form by variable-frequency motor and frequency-variable controller according to claim 1,2,3,4,6,7,8,9 or 10 described multifunctional high-efficiency aerators.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010202676209U CN201809227U (en) | 2010-02-04 | 2010-07-10 | Multifunctional high-efficiency aerator |
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| CN201029044036 | 2010-02-04 | ||
| CN201029044036.4 | 2010-02-04 | ||
| CN2010202676209U CN201809227U (en) | 2010-02-04 | 2010-07-10 | Multifunctional high-efficiency aerator |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102743994A (en) * | 2012-06-18 | 2012-10-24 | 江苏大学 | Sewage treatment mixer |
| CN104437221A (en) * | 2014-11-25 | 2015-03-25 | 潘春圃 | Stirrer with double impellers |
| CN104772083A (en) * | 2015-03-18 | 2015-07-15 | 四川中哲新材料科技有限公司 | Gas-liquid mixing and stirring device |
| CN104891657A (en) * | 2015-06-08 | 2015-09-09 | 新乡市蓝海环境工程有限公司 | CBR sewage biological treatment device and operating method thereof |
| CN105606783A (en) * | 2016-01-28 | 2016-05-25 | 中国环境科学研究院 | Device and method for simulating influence of different illumination conditions on water body nutritive salt |
| CN106186385A (en) * | 2016-09-29 | 2016-12-07 | 台州天渔增氧设备科技有限公司 | A kind of impeller of aeration oxygen increasing machine |
| CN108483687A (en) * | 2018-04-25 | 2018-09-04 | 成都澎湃新能源科技有限公司 | A kind of mixing aerating machine of driving structure optimization |
| CN108706838A (en) * | 2018-07-28 | 2018-10-26 | 上海亚威环保科技有限公司 | Medical waste water zero discharge treatment device and method |
| CN108862694A (en) * | 2018-05-30 | 2018-11-23 | 四川奥恒环保科技有限公司 | Intelligent and high-efficiency sewage-treatment plant |
| CN109052649A (en) * | 2018-10-31 | 2018-12-21 | 青岛思普润水处理股份有限公司 | A kind of microkinetic combined sewage processing unit |
| CN109516540A (en) * | 2018-10-18 | 2019-03-26 | 文露 | A kind of environmental protection aerator |
| CN112897718A (en) * | 2021-04-02 | 2021-06-04 | 北控水务(中国)投资有限公司 | Feeding device of ultramicro bubble aeration equipment and sewage treatment system |
| CN116119846A (en) * | 2023-04-17 | 2023-05-16 | 山东国宏生物科技有限公司 | Cyclone aeration device for soybean protein wastewater treatment aerobic section |
| CN108483687B (en) * | 2018-04-25 | 2024-06-07 | 陕西易阳泽智科技有限公司 | Mixed oxygenator with optimized driving structure |
-
2010
- 2010-07-10 CN CN2010202676209U patent/CN201809227U/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102743994A (en) * | 2012-06-18 | 2012-10-24 | 江苏大学 | Sewage treatment mixer |
| CN104437221A (en) * | 2014-11-25 | 2015-03-25 | 潘春圃 | Stirrer with double impellers |
| CN104772083A (en) * | 2015-03-18 | 2015-07-15 | 四川中哲新材料科技有限公司 | Gas-liquid mixing and stirring device |
| CN104891657A (en) * | 2015-06-08 | 2015-09-09 | 新乡市蓝海环境工程有限公司 | CBR sewage biological treatment device and operating method thereof |
| CN105606783A (en) * | 2016-01-28 | 2016-05-25 | 中国环境科学研究院 | Device and method for simulating influence of different illumination conditions on water body nutritive salt |
| CN106186385A (en) * | 2016-09-29 | 2016-12-07 | 台州天渔增氧设备科技有限公司 | A kind of impeller of aeration oxygen increasing machine |
| CN108483687A (en) * | 2018-04-25 | 2018-09-04 | 成都澎湃新能源科技有限公司 | A kind of mixing aerating machine of driving structure optimization |
| CN108483687B (en) * | 2018-04-25 | 2024-06-07 | 陕西易阳泽智科技有限公司 | Mixed oxygenator with optimized driving structure |
| CN108862694A (en) * | 2018-05-30 | 2018-11-23 | 四川奥恒环保科技有限公司 | Intelligent and high-efficiency sewage-treatment plant |
| CN108706838A (en) * | 2018-07-28 | 2018-10-26 | 上海亚威环保科技有限公司 | Medical waste water zero discharge treatment device and method |
| CN109516540A (en) * | 2018-10-18 | 2019-03-26 | 文露 | A kind of environmental protection aerator |
| CN109052649A (en) * | 2018-10-31 | 2018-12-21 | 青岛思普润水处理股份有限公司 | A kind of microkinetic combined sewage processing unit |
| CN109052649B (en) * | 2018-10-31 | 2023-08-29 | 青岛思普润水处理股份有限公司 | Micro-power mixed sewage treatment device |
| CN112897718A (en) * | 2021-04-02 | 2021-06-04 | 北控水务(中国)投资有限公司 | Feeding device of ultramicro bubble aeration equipment and sewage treatment system |
| CN116119846A (en) * | 2023-04-17 | 2023-05-16 | 山东国宏生物科技有限公司 | Cyclone aeration device for soybean protein wastewater treatment aerobic section |
| CN116119846B (en) * | 2023-04-17 | 2023-10-27 | 山东国宏生物科技有限公司 | Cyclone aeration device for soybean protein wastewater treatment aerobic section |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20130710 |