CN102491510A - Membrane up-flow aerobic bioreactor (MUAR) - Google Patents
Membrane up-flow aerobic bioreactor (MUAR) Download PDFInfo
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- CN102491510A CN102491510A CN201110399522XA CN201110399522A CN102491510A CN 102491510 A CN102491510 A CN 102491510A CN 201110399522X A CN201110399522X A CN 201110399522XA CN 201110399522 A CN201110399522 A CN 201110399522A CN 102491510 A CN102491510 A CN 102491510A
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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 invention discloses a membrane up-flow aerobic bioreactor (MUAR), which is used for increasing the oxygen charging efficiency of the reactor through ultrafine air bubbles to lower the running energy consumption of the reactor and belongs to the technical fields of environmental engineering and sewage treatment. In the reactor, water is fed in an up-flow way; an ultrafine air bubble generating device consisting of a jet aeration spray head, a decompression cabin and a polypropylene millipore filter pipe is used for generating ultrafine air bubbles (5-10 mum in diameter) which are fully mixed with inflow water from bottom to top; the upper part of the reactor is provided with a muddy water baffle plate for isolating sludge; and outflow water reflows and enters the ultrafine air bubble generating device. Due to a small specific surface area and collision and Brownian motion among molecules, the ultrafine air bubbles can be partially precipitated in water, so that higher oxygen transfer efficiency than that of ordinary air bubbles is achieved, and the ultrafine air bubbles are better combined with sludge at the bottom of the reactor. Compared with a reactor of the same type, the reactor disclosed by the invention has the advantages that: pollutants in bottom inflow water of the reactor can be degraded effectively, and the aim of reducing running cost is fulfilled finally.
Description
Technical field
A kind of upflowing aerobe reactor; Mainly intake thorough mixing to improve oxygen transfer efficiency through ultramicro air bubble and upflowing; The ultramicro air bubble that sinks simultaneously constantly can also fully contact improving its biological activity with the aerobic sludge of reactor bottom, thus the organic pollutant in the water inlet of can fully degrading.Belong to environmental engineering and field of waste water treatment.
Background technology
Along with the day by day attention of the whole society to environment protection and Pollution abatement, how efficiently to remove organic pollutant in the waste water, extremely urgent with the sustainability that guarantees growth of the national economic.Remove one of measure of water pollutant as the utilization biochemical theory, aerobe is handled because of it and is rapidly and efficiently extensively adopted.Yet in each principal element that influences the waste water aerobic biological treatment, the transfer efficiency that how to improve oxygen is just becoming the focus of day by day paying close attention to.This be because; Higher oxygen transfer efficiency is the effective biological activity of aerobic sludge in the aerobe reaction unit not only; Thereby promote the thorough mixing of waste water-mud-oxygen, but also can reduce the main bottleneck of aerobe reactor, the i.e. energy consumption of reactor drum and running cost.
Usually, promoting oxygen dissolving method relies on oxygen increasing pump sand head to improve the saturation ratio of water oxygen mostly.Yet this bubble is because particle is big thereby long-pending less with the surface in contact of water body, and lift velocity is very fast thereby residence time is too short because big gas ducks in drink, and then do not reach ideal dissolved oxygen effect.As the extension of jet-flow aeration mode with replenish; In the present invention; It is broken that bubble behind the jet-flow aeration (typically having a diameter from 50-100 μ m) continues it through unexpected decompression; The bubble that is broken can obtain ultramicro air bubble after making its even matter through millipore filtration, and the bubble mean size is in 10 μ m.
Research shows; Ultramicro air bubble is because its diameter is very little thereby have a bigger specific surface area; Thereby more easily oxygen molecule is adsorbed on its surface, because the pedesis between water molecules can make the interior gas density of bubble increase sharply, finally causes the decline of ultramicro air bubble in water simultaneously.Therefore, after introducing ultramicro air bubble in the aerobic bio-reactor, not only can improve the reactor drum oxygen-transfer efficiency, thereby reduce the working cost of reactor drum energy consumption and aerobic treatment workshop section; In addition, can also utilize the sinking characteristic of ultramicro air bubble that it is fully contacted with the mud of reactor bottom, and then improve the biological activity of mud, the removal effect of organic pollutant in the final further waste water.
Summary of the invention
The objective of the invention is to propose a kind of upflowing aerobe reactor that can improve oxygen transfer efficiency by ultramicro air bubble.Ultramicro air bubble (being defined as 5-10 μ m among the present invention) is because diameter is little thereby specific surface area is big than common blister, this bubble can be effectively with oxygen molecule combination and then increase and waste water in the chance that contacts of pollutent; Simultaneously because the settling character of ultramicro air bubble, can be fully with reactor drum in upflowing intake and mainly concentrate on bottom mud combine.Based on above 2 points, it is lower that the aerobic reactor that the present invention proposes can help effectively to overcome common aerobic reactor oxygen-transfer efficiency, and the more high deficiency of working cost.
Technical scheme of the present invention: a kind of upflowing aerobic reactor through ultramicro air bubble promotion oxygen transfer efficiency, reactor drum is taper, and the diameter in garden, top week is greater than the central reaction zone garden diameter in week, and the bottom is tapered; Reactor drum is by ultramicro air bubble generating unit (1), effluent recycling (2), and muddy water separation baffles (3), reaction zone (4), water-in (5), water outlet (6) is formed; Filled biomass active sludge in the reaction zone (4); Ultramicro air bubble generating unit (1) is installed in the center upper portion of reactor drum; Muddy water separation baffles (3) is installed in reaction zone (4) top of reactor drum; Effluent recycling (2) is by putting one side on the top of reactor drum; Water outlet (6) is by putting the opposite side on the top of reactor drum, and water-in (5) is by a side of putting at reactor bottom; Ultramicro air bubble generating unit (1) is made up of jet-flow aeration water-in (7), jet-flow aeration inlet mouth (8), underpressure chamber (9) and microporous filter tube (10); Jet-flow aeration water-in (7) is on the top of ultramicro air bubble generating unit (1), and jet-flow aeration inlet mouth (8) is at the upper lateral part of ultramicro air bubble generating unit (1), and staying is followed successively by underpressure chamber (9), microporous filter tube (10), and ultramicro air bubble outlet is arranged at the bottom; Effluent recycling (2) is connected with jet-flow aeration water-in (7) through pump and pipeline; The chimney filter aperture of microporous filter tube (10) is 5-10 μ m; Reactor material is stainless steel or toughened glass, and aspect ratio is 2:1-8:1.
The microporous filter tube (10) of forming the ultramicro air bubble producer can be changed the microporous filter tube in different apertures, so that clean and maintenance.
The described application method that promotes the upflowing aerobic reactor of oxygen transfer efficiency through ultramicro air bubble; The high-speed gas-liquid mixed flow that the jet-flow aeration head that is made up of jet-flow aeration water-in (7) and jet-flow aeration inlet mouth (8) sprays is depressurized suddenly through underpressure chamber (9) time; Cause bubble to be sheared; Generate the micro bubble of diameter at 50-100 μ m, these micro bubbles are divided into the more all even trickle bubble of 5-10 μ m, i.e. ultramicro air bubble by the filter opening of tube wall through microporous filter tube the time.
Beneficial effect of the present invention: as a kind of aerobe reactor of different traditional oxygen supply mode, reactor drum according to the invention adopts ultramicro air bubble air feed from top to bottom, with the upflowing water inlet thorough mixing from reactor bottom.Simultaneously, based on characteristics such as the specific surface area of ultramicro air bubble are big and can partly sink, can effectively promote the contact of waste water-air-mud, thereby effectively improve oxygen transmission and transfer efficiency in the reactor drum, and improve the biochemical treatment effect of waste water with this.
Description of drawings
The structural representation of Fig. 1 indication upflowing of the present invention aerobe reactor.
1, ultramicro air bubble generating unit, 2, effluent recycling, 3, the muddy water separation baffles, 4, reaction zone, 5, water-in, 6, water outlet, 7, the jet-flow aeration water-in, 8, the jet-flow aeration inlet mouth, 9, the underpressure chamber, 10, microporous filter tube.
Embodiment
In conjunction with accompanying drawing 1 explanation as follows:
For realizing above-mentioned purpose, the present invention adopts the flow lifting type aerobe reactor (Fig. 1) that is equipped with ultramicro air bubble generating unit (1), and reactor material is stainless steel or toughened glass, and aspect ratio is 2:1-8:1.Wherein, ultramicro air bubble producer (1) is made up of jet-flow aeration water-in (7), inlet mouth (8), underpressure chamber (9) and microporous filter tube (10), and wherein the bubble generator air outlet is stretched into below inside reactor (4) the mud-water separation baffle plate (3).In addition, the microporous filter tube in the ultramicro air bubble generating unit of the present invention can be changed, so that clean and maintenance.
The aerobic reactor water intake mode is upflowing water inlet (5), and reactor drum top is provided with the mud-water separation baffle plate (3) of Vestolen PP 7052 material, and reactor head is provided with effluent recycling (2) and water outlet (6).The reactor drum water outlet that wherein contains the part bubble refluxes and gets into the ultramicro air bubble producer, and the reactor drum water outlet is then discharged after removing bubble.
As shown in Figure 1, a kind of upflowing aerobe reactor comprises ultramicro air bubble generating unit (1), effluent recycling (2), muddy water separation baffles (3), reaction zone (4), water-in (5), water outlet (6).Wherein, Recirculation water (7) and the pressurized air (8) that contains the part bubble gets into thorough mixing behind the jet-flow aeration head respectively; Air-water mixture sprays into underpressure chamber (9) at a high speed; Bubble (diameter is 50-100 μ m) is divided into less bubble (5-30 μ m) after pressure discharges suddenly, it is to be cut into littler ultramicro air bubble behind the 5-10 μ m microporous filter tube (10) that these bubbles get into diameter again.Compare with common blister, ultramicro air bubble has littler specific surface area thereby can combine with more oxygen molecule; Simultaneously, because collision and pedesis between water molecules and oxygen molecule make that the oxygen molecule density in the bubble constantly increases, and can finally cause the part ultramicro air bubble to sink.Bubble after the sinking can improve the biological activity of reactor bottom mud with after reactor bottom mud contacts, thereby promotes the degraded of higher concentration pollutent in the initial water inlet of reactor bottom.Thereby, compare with the reactor drum that does not use ultramicro air bubble oxygenation mode, thus reactor drum according to the invention further oxygen transfer efficiency and reactor drum mass-transfer efficiency.In other words, adopt ultramicro air bubble to give the aerobe reactor oxygenation, not only can improve the oxygen-transfer efficiency of reactor drum rapidly, also can increase the touch opportunity of waste water-oxygen in the reactor drum-mud, and finally improve the waste water treatment efficiency of aerobe reactor.
In sum, have the ultramicro air bubble of sinking characteristic and the water inlet of from bottom to top reactor drum and the aerobic sludge that is dispersed throughout in the reactor drum can thorough mixing, the remarkable characteristic of upflowing aerobe reactor according to the invention just.
Claims (3)
1. the upflowing aerobic reactor through ultramicro air bubble promotion oxygen transfer efficiency is characterized in that reactor drum is taper, and the diameter in garden, top week is greater than the central reaction zone garden diameter in week, and the bottom is tapered; Reactor drum is by ultramicro air bubble generating unit (1), effluent recycling (2), and muddy water separation baffles (3), reaction zone (4), water-in (5), water outlet (6) is formed; Filled biomass active sludge in the reaction zone (4); Ultramicro air bubble generating unit (1) is installed in the center upper portion of reactor drum; Muddy water separation baffles (3) is installed in reaction zone (4) top of reactor drum; Effluent recycling (2) is by putting one side on the top of reactor drum; Water outlet (6) is by putting the opposite side on the top of reactor drum, and water-in (5) is by a side of putting at reactor bottom; Ultramicro air bubble generating unit (1) is made up of jet-flow aeration water-in (7), jet-flow aeration inlet mouth (8), underpressure chamber (9) and microporous filter tube (10); Jet-flow aeration water-in (7) is on the top of ultramicro air bubble generating unit (1), and jet-flow aeration inlet mouth (8) is at the upper lateral part of ultramicro air bubble generating unit (1), and staying is followed successively by underpressure chamber (9), microporous filter tube (10), and ultramicro air bubble outlet is arranged at the bottom; Effluent recycling (2) is connected with jet-flow aeration water-in (7) through pump and pipeline; The chimney filter aperture of microporous filter tube (10) is 0.5-50 μ m; Reactor material is stainless steel or toughened glass, and aspect ratio is 2:1-8:1.
2. the upflowing aerobic reactor through ultramicro air bubble promotion oxygen transfer efficiency according to claim 1, the microporous filter tube (10) that it is characterized in that forming the ultramicro air bubble producer can be changed the microporous filter tube in different apertures, so that clean and maintenance.
3. the described application method that promotes the upflowing aerobic reactor of oxygen transfer efficiency through ultramicro air bubble of claim 1; It is characterized in that through underpressure chamber (9) time, being depressurized suddenly by the high-speed gas-liquid mixed flow that the jet-flow aeration head that jet-flow aeration water-in (7) and jet-flow aeration inlet mouth (8) constitute sprays; Cause bubble to be sheared; Generate the micro bubble of diameter at 50-100 μ m; These micro bubbles are divided into the more all even trickle bubble of 5-10 μ m, i.e. ultramicro air bubble by the filter opening of tube wall through microporous filter tube the time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110399522XA CN102491510B (en) | 2011-12-06 | 2011-12-06 | Membrane up-flow aerobic bioreactor (MUAR) |
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| CN201110399522XA CN102491510B (en) | 2011-12-06 | 2011-12-06 | Membrane up-flow aerobic bioreactor (MUAR) |
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| CN102491510A true CN102491510A (en) | 2012-06-13 |
| CN102491510B CN102491510B (en) | 2013-06-12 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103880165A (en) * | 2012-12-21 | 2014-06-25 | 陈晓波 | High-efficient sewage aerobic deep treatment device |
| CN108862673A (en) * | 2018-07-13 | 2018-11-23 | 山东尤根环保科技有限公司 | Non-return jetting type air water mixed type waste liquid wastewater treatment ultrafiltration apparatus |
| US10219670B2 (en) | 2014-09-05 | 2019-03-05 | Tennant Company | Systems and methods for supplying treatment liquids having nanobubbles |
| CN112023737A (en) * | 2020-07-30 | 2020-12-04 | 江苏大学 | Coaxial needle electrohydrodynamic atomization method for preparing nanoparticle-loaded microbubbles |
| CN113117541A (en) * | 2019-12-30 | 2021-07-16 | 青岛海尔滚筒洗衣机有限公司 | Microbubble shower nozzle and have washing equipment of this microbubble shower nozzle |
Citations (4)
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| CN1060453A (en) * | 1990-08-27 | 1992-04-22 | 纽卡斯尔大学研究公司 | The aeration of liquid |
| CN101234820A (en) * | 2008-02-28 | 2008-08-06 | 同济大学 | Jet flow water distribution device and application thereof |
| CN101395091A (en) * | 2006-02-02 | 2009-03-25 | 李载宪 | Pure oxygen aeration system for wastewater treatment |
| KR20110048142A (en) * | 2009-11-02 | 2011-05-11 | 주식회사 동신이엔텍 | Flotation tank for rotary injection of nano size bubble |
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2011
- 2011-12-06 CN CN201110399522XA patent/CN102491510B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1060453A (en) * | 1990-08-27 | 1992-04-22 | 纽卡斯尔大学研究公司 | The aeration of liquid |
| CN101395091A (en) * | 2006-02-02 | 2009-03-25 | 李载宪 | Pure oxygen aeration system for wastewater treatment |
| CN101234820A (en) * | 2008-02-28 | 2008-08-06 | 同济大学 | Jet flow water distribution device and application thereof |
| KR20110048142A (en) * | 2009-11-02 | 2011-05-11 | 주식회사 동신이엔텍 | Flotation tank for rotary injection of nano size bubble |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103880165A (en) * | 2012-12-21 | 2014-06-25 | 陈晓波 | High-efficient sewage aerobic deep treatment device |
| US10219670B2 (en) | 2014-09-05 | 2019-03-05 | Tennant Company | Systems and methods for supplying treatment liquids having nanobubbles |
| CN108862673A (en) * | 2018-07-13 | 2018-11-23 | 山东尤根环保科技有限公司 | Non-return jetting type air water mixed type waste liquid wastewater treatment ultrafiltration apparatus |
| CN113117541A (en) * | 2019-12-30 | 2021-07-16 | 青岛海尔滚筒洗衣机有限公司 | Microbubble shower nozzle and have washing equipment of this microbubble shower nozzle |
| CN112023737A (en) * | 2020-07-30 | 2020-12-04 | 江苏大学 | Coaxial needle electrohydrodynamic atomization method for preparing nanoparticle-loaded microbubbles |
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| CN102491510B (en) | 2013-06-12 |
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