CN102491510B - Membrane up-flow aerobic bioreactor (MUAR) - Google Patents
Membrane up-flow aerobic bioreactor (MUAR) Download PDFInfo
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- CN102491510B CN102491510B CN201110399522XA CN201110399522A CN102491510B CN 102491510 B CN102491510 B CN 102491510B CN 201110399522X A CN201110399522X A CN 201110399522XA CN 201110399522 A CN201110399522 A CN 201110399522A CN 102491510 B CN102491510 B CN 102491510B
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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 fully mix to improve oxygen transfer efficiency by ultramicro air bubble with the upflowing water inlet, the ultramicro air bubble that constantly sinks simultaneously can also fully contact to improve 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 increasingly attention of the whole society to environment protection and Pollution abatement, how efficiently to remove Organic Pollutants in Wastewater, extremely urgent with the sustainability that guarantees growth of the national economic.As using biochemical theory to remove one of measure of water pollutant, aerobe is processed and rapidly and efficiently is widely adopted because of it.Yet in each principal element that affects 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 due to, higher oxygen transfer efficiency is the effective biological activity of aerobic sludge in the aerobe reaction unit not only, thereby promote the abundant mixing of waste water-mud-oxygen, but also can reduce the Main Bottleneck of aerobe reactor, the i.e. energy consumption of reactor 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 large thereby less with the contact surface area of water body, and lift velocity is very fast thereby residence time is too short because large gas ducks in drink, and then does not reach desirable dissolved oxygen effect.As the extension of jet-flow aeration mode with replenish, in the present invention, it is broken that bubble after jet-flow aeration (typically having a diameter from 50-100 μ m) continues it by unexpected decompression, the bubble that is broken can obtain ultramicro air bubble after making it homogeneous by millipore filtration, and the bubble mean size is in 10 μ m.
Studies show that, ultramicro air bubble is very little thereby have a larger specific surface area due to its diameter, thereby easier oxygen molecule is adsorbed on its surface, in bubble, gas density increases sharply because the pedesis between water molecules can make simultaneously, finally causes the decline of ultramicro air bubble in water.Therefore, after introducing ultramicro air bubble in aerobic bio-reactor, not only can improve the reactor oxygen-transfer efficiency, thereby reduce the working cost of reactor 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 final further removal effect of Organic Pollutants in Wastewater.
Summary of the invention
The objective of the invention is to propose a kind ofly can improve by ultramicro air bubble the upflowing aerobe reactor of oxygen transfer efficiency.Ultramicro air bubble (being defined as 5-10 μ m in the present invention) is little thereby specific surface area is large than common blister, the chance that this bubble can effectively be combined with oxygen molecule and then increase contacts with Pollutants in Wastewater due to diameter; Simultaneously, due to the settling character of ultramicro air bubble, can be fully in reactor upflowing water inlet and the mud that mainly concentrates on the bottom be combined.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 that promotes oxygen transfer efficiency by ultramicro air bubble, reactor is taper, and the diameter in garden, top week is greater than the central reaction zone diameter in garden week, and the bottom is tapered; Reactor 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) forms; Filled biomass active sludge in reaction zone (4); Ultramicro air bubble generating unit (1) is installed in the center upper portion of reactor, muddy water separation baffles (3) is installed in reaction zone (4) top of reactor, effluent recycling (2) is by putting in the top of reactor one side, water outlet (6) is by putting at the top of reactor opposite side, and water-in (5) is by a side of putting at reactor bottom; Ultramicro air bubble generating unit (1) is comprised 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 a ultramicro air bubble outlet is arranged at the bottom; Effluent recycling (2) is connected with jet-flow aeration water-in (7) by 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) that forms device for generating super-fine air bubble can be changed the microporous filter tube of different pore size, so that clean and safeguard.
The described application method that promotes the upflowing aerobic reactor of oxygen transfer efficiency by ultramicro air bubble, the high-speed gas-liquid mixed flow that the jet-flow aeration head that is made of jet-flow aeration water-in (7) and jet-flow aeration inlet mouth (8) sprays is depressurized suddenly by underpressure chamber (9) time, cause bubble to be sheared, generate diameter at the micro bubble of 50-100 μ m, these micro bubbles are divided into 5-10 μ m more all even trickle bubble, 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 of the present invention adopts ultramicro air bubble air feed from top to bottom, fully mixes with upflowing water inlet from reactor bottom.Simultaneously, based on characteristics such as the specific surface area of ultramicro air bubble are large and can partly sink, can effectively promote the contact of waste water-air-mud, thereby effectively improve oxygen transmission and transfer efficiency in reactor, and improve the Biochemical Treatment 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
1 be described as follows by reference to the accompanying drawings:
For achieving the above object, 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, device for generating super-fine air bubble (1) is comprised 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) mud-water separation baffle plate (3).In addition, the microporous filter tube in ultramicro air bubble generating unit of the present invention can be changed, so that clean and safeguard.
The aerobic reactor water intake mode is upflowing water inlet (5), and reactor top arranges the mud-water separation baffle plate (3) of polypropylene material, and reactor head arranges effluent recycling (2) and water outlet (6).The reactor water outlet that wherein contains the part bubble refluxes and enters device for generating super-fine air bubble, and the reactor water outlet is 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, contain and fully mix after the recirculation water (7) of part bubble and pressurized air (8) enter respectively the jet-flow aeration head, air-water mixture sprays at a high speed underpressure chamber (9), bubble (diameter is 50-100 μ m) is divided into less bubble (5-30 μ m) after the pressure sudden outburst, it is to be cut into less ultramicro air bubble after 5-10 μ m microporous filter tube (10) that these bubbles enter diameter again.Compare with common blister, ultramicro air bubble has less specific surface area thereby can be combined with more oxygen molecule; Simultaneously, due to the collision between water molecules and oxygen molecule and pedesis, make the oxygen molecule density in bubble constantly increase, and can finally cause the part ultramicro air bubble to sink.Bubble after 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 that does not use ultramicro air bubble oxygenation mode, thus reactor of the present invention further oxygen transfer efficiency and reactor mass-transfer efficiency.In other words, adopt ultramicro air bubble to the aerobe reactor oxygenation, not only can improve rapidly the oxygen-transfer efficiency of reactor, also can increase the touch opportunity of waste water-oxygen in reactor-mud, and finally improve the waste water treatment efficiency of aerobe reactor.
In sum, have the ultramicro air bubble of sinking characteristic and can fully mix with reactor water inlet from bottom to top and the aerobic sludge that is dispersed throughout in reactor, just the remarkable characteristic of upflowing aerobe reactor of the present invention.
Claims (2)
1. upflowing aerobic reactor that promotes oxygen transfer efficiency by ultramicro air bubble, it is characterized in that reactor shape is: the diameter of top circumference is greater than the diameter of central reaction zone circumference, and the bottom is tapered; Reactor 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) forms; Filled biomass active sludge in reaction zone (4); Ultramicro air bubble generating unit (1) is arranged on the center upper portion of reactor, muddy water separation baffles (3) is arranged on reaction zone (4) top of reactor, effluent recycling (2) is placed in top one side of reactor, water outlet (6) is placed in the top opposite side of reactor, and water-in (5) is placed in a side of reactor bottom; Ultramicro air bubble generating unit (1) is comprised 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 a ultramicro air bubble outlet is arranged at the bottom; Effluent recycling (2) is connected with jet-flow aeration water-in (7) by 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;
Described ultramicro air bubble generating unit (1) is depressurized suddenly by underpressure chamber (9) time by the high-speed gas-liquid mixed flow of the jet-flow aeration head ejection that jet-flow aeration water-in (7) and jet-flow aeration inlet mouth (8) consist of, cause bubble to be sheared, generate diameter at the micro bubble of 50-100 μ m, these micro bubbles are divided into 5-10 μ m more all even trickle bubble, i.e. ultramicro air bubble by the filter opening of tube wall through microporous filter tube the time.
2. the upflowing aerobic reactor that promotes oxygen transfer efficiency by ultramicro air bubble according to claim 1, the microporous filter tube (10) that it is characterized in that forming device for generating super-fine air bubble can be changed the microporous filter tube of different pore size, so that clean and safeguard.
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| 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 CN102491510A (en) | 2012-06-13 |
| CN102491510B true CN102491510B (en) | 2013-06-12 |
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| 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 |
| CN113117541B (en) * | 2019-12-30 | 2023-04-07 | 青岛海尔洗涤电器有限公司 | Microbubble shower nozzle and have washing equipment of this microbubble shower nozzle |
| CN112023737B (en) * | 2020-07-30 | 2022-08-23 | 江苏大学 | Coaxial needle electrohydrodynamic atomization method for preparing nanoparticle-loaded microbubbles |
Citations (3)
| 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 |
| 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 |
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| KR101130816B1 (en) * | 2009-11-02 | 2012-04-12 | 주식회사 동신이엔텍 | Flotation tank for rotary injection of nano size bubble |
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| 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 |
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Effective date of registration: 20141030 Address after: Yixing City, Jiangsu Province, 214211 village and town Patentee after: YIXING TIANMA ENVIRONMENTAL PROTECTION ENGINEERING CO., LTD. Address before: Lihu Avenue Binhu District 214122 Jiangsu city of Wuxi province No. 1800 Jiangnan University School of civil engineering and environment Patentee before: Jiangnan University |
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