CN2641035Y - Air supply low pressure jet aerator - Google Patents
Air supply low pressure jet aerator Download PDFInfo
- Publication number
- CN2641035Y CN2641035Y CNU032627866U CN03262786U CN2641035Y CN 2641035 Y CN2641035 Y CN 2641035Y CN U032627866 U CNU032627866 U CN U032627866U CN 03262786 U CN03262786 U CN 03262786U CN 2641035 Y CN2641035 Y CN 2641035Y
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- Prior art keywords
- stage nozzle
- air
- mixing chamber
- nozzle
- wastewater
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- 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 - Fee Related
Links
- 238000005276 aerator Methods 0.000 title description 10
- 238000002156 mixing Methods 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000005273 aeration Methods 0.000 abstract description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 17
- 229910052760 oxygen Inorganic materials 0.000 abstract description 17
- 239000001301 oxygen Substances 0.000 abstract description 17
- 239000002351 wastewater Substances 0.000 abstract description 15
- 239000010802 sludge Substances 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 3
- 239000002957 persistent organic pollutant Substances 0.000 abstract description 3
- 230000008602 contraction Effects 0.000 abstract description 2
- 238000000354 decomposition reaction Methods 0.000 abstract description 2
- 238000004062 sedimentation Methods 0.000 abstract description 2
- 238000001179 sorption measurement Methods 0.000 abstract description 2
- 238000005352 clarification Methods 0.000 abstract 1
- 238000006213 oxygenation reaction Methods 0.000 abstract 1
- 230000001737 promoting effect Effects 0.000 abstract 1
- 239000003570 air Substances 0.000 description 14
- 239000007788 liquid Substances 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 239000000443 aerosol Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000010840 domestic wastewater Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000008247 solid mixture Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
本实用新型涉及供气式低压射流曝气装置，是向废水中供氧的装置。它包括固定在一起的两个喷嘴，其中一级喷嘴套装在二级喷嘴内，一级喷嘴与二级喷嘴之间形成一个湍流混合室，二级喷嘴的尾部是一个收缩口。以鼓风机向射流器供气，循环废水在循环泵的压力下通过一级喷嘴高速进入湍流混合室，在湍流混合室里与鼓风送来的低压空气充分混合、雾化，完成高效率的氧转移过程。此实用新型具有最主要的特点是氧转移率和动力效率高，设备可靠维修量小，能够显著地节约电耗，降低好氧生物处理的成本；同时它能够加大曝气池中污泥对废水中有机污染物的吸附速率，促使循环废水中的有机污染物的分解和沉降，从而促进废水的澄清、防止污泥膨胀的发生。
The utility model relates to an air-supply low-pressure jet aeration device, which is a device for supplying oxygen to waste water. It includes two nozzles fixed together, wherein the first-stage nozzle is set in the second-stage nozzle, a turbulent mixing chamber is formed between the first-stage nozzle and the second-stage nozzle, and the tail of the second-stage nozzle is a contraction port. The air blower is used to supply air to the ejector, and the circulating waste water enters the turbulent flow mixing chamber at high speed through the first-stage nozzle under the pressure of the circulating pump, and is fully mixed and atomized with the low-pressure air sent by the blower in the turbulent flow mixing chamber to complete high-efficiency oxygenation. transfer process. The utility model has the most important features of high oxygen transfer rate and power efficiency, reliable equipment maintenance, and can significantly save power consumption and reduce the cost of aerobic biological treatment; at the same time, it can increase the sludge in the aeration tank. The adsorption rate of organic pollutants in wastewater promotes the decomposition and sedimentation of organic pollutants in circulating wastewater, thereby promoting the clarification of wastewater and preventing the occurrence of sludge bulking.
Description
一、技术领域1. Technical field
本实用新型涉及环境工程中废水的好氧生物处理设施，特别适用于向废水中供氧的装置。The utility model relates to an aerobic biological treatment facility for waste water in environmental engineering, and is particularly suitable for a device for supplying oxygen to waste water.
二、背景技术2. Background technology
曝气设备是废水好氧生物处理的关键设备。有机废水好氧生物处理的成本主要来自曝气过程。Aeration equipment is the key equipment for aerobic biological treatment of wastewater. The cost of aerobic biological treatment of organic wastewater mainly comes from the aeration process.
好氧生物处理是城市废水、生活废水和工业有机废水处理的主体工艺。现今用于曝气的设备分为两大类：鼓风曝气和机械曝气。常见的鼓风曝气是通过曝气元件把鼓风送来的空气分散成气泡送入水中，气泡在上升的过程中一部分溶入液相，溶入液相的氧气占鼓风送来的氧气的比例叫做氧转移率。传统的鼓风曝气元件的氧转移率很低，大都在10％以下，动力消耗大。Aerobic biological treatment is the main process of urban wastewater, domestic wastewater and industrial organic wastewater treatment. The equipment used for aeration today falls into two categories: blast aeration and mechanical aeration. The common blast aeration is to disperse the air sent by the blast into bubbles and send them into the water through the aeration element. Part of the bubbles dissolve into the liquid phase during the rising process, and the oxygen dissolved in the liquid phase accounts for the oxygen sent by the blast. The ratio of is called the oxygen transfer rate. The oxygen transfer rate of the traditional blower aeration element is very low, mostly below 10%, and the power consumption is large.
目前，有两种曝气设备氧利用效率较高：微孔曝气器和自吸式射流曝气器。微孔曝气器的氧转移效率在10％以上，最高可达到30％左右，因此比较节电，动力效率高达4--6KgO2/Kw.h。但是，微孔曝气器是依靠膜板上细小的微孔来分散气泡，通过减少气泡的直径达到提高氧气向液体的传质速率的目的，膜板孔径在0.08-0.12mm，微孔极易发生堵塞，膜板也容易破损，导致空气“短路”，曝气效率大幅度下降，。此外，每个微孔曝气器服务面积只有0.5m2，设备寿命短，维修量大，管路连接复杂，安装要求高。自吸式射流曝气器氧转移率可以达到20％，但是它需要在高扬程的泵作用下，依靠泵的动力形成的真空吸入空气，因此动力效率低，很少应用于较大型的废水处理工程。At present, there are two types of aeration equipment with high oxygen utilization efficiency: microporous aerator and self-priming jet aerator. The oxygen transfer efficiency of the microporous aerator is above 10%, and the highest can reach about 30%, so it is relatively power-saving, and the power efficiency is as high as 4--6KgO 2 /Kw.h. However, the microporous aerator relies on the tiny micropores on the membrane plate to disperse the air bubbles. The purpose of increasing the mass transfer rate of oxygen to the liquid is achieved by reducing the diameter of the bubbles. The pore diameter of the membrane plate is 0.08-0.12mm, and the micropores are very easy. Blockage occurs, and the membrane plate is easily damaged, resulting in air "short circuit" and a significant drop in aeration efficiency. In addition, the service area of each microporous aerator is only 0.5m 2 , the service life of the equipment is short, the maintenance amount is large, the pipeline connection is complicated, and the installation requirements are high. The oxygen transfer rate of the self-priming jet aerator can reach 20%, but it needs to rely on the vacuum suction air formed by the power of the pump under the action of a high-lift pump, so the power efficiency is low, and it is rarely used in large-scale wastewater treatment project.
三、发明内容3. Contents of the invention
为了克服上述缺陷，本实用新型的目的是提供一种氧转移效率和动力效率高，可靠性好，成本低的供气式低压射流曝气装置。In order to overcome the above defects, the purpose of this utility model is to provide an air-supply type low-pressure jet aeration device with high oxygen transfer efficiency and power efficiency, good reliability and low cost.
实现本发明目的的技术方案是这样解决的：曝气元件包括固定在一起的两个喷嘴，其改进之处在于，一级喷嘴套装在二级喷嘴内，一级喷嘴与二级喷嘴之间形成一个湍流混合室，空气在鼓风压力下进入混合室与液体混合；二级喷嘴的尾部是一个收缩口。The technical solution for realizing the purpose of the present invention is as follows: the aeration element includes two nozzles fixed together, and the improvement is that the primary nozzle is set in the secondary nozzle, and the primary nozzle and the secondary nozzle are formed. A turbulent mixing chamber, the air enters the mixing chamber under the blast pressure to mix with the liquid; the tail of the secondary nozzle is a constriction port.
本实用新型以鼓风机向射流器供气，大幅度降低了射流器吸入空气所需要的真空度，在一级喷嘴和二级喷嘴之间形成的湍流混合室内，空气与水充分混合、雾化，有效地提高了氧转移效率和动力效率。The utility model uses a blower to supply air to the jet, which greatly reduces the vacuum required for the jet to inhale air. In the turbulent mixing chamber formed between the primary nozzle and the secondary nozzle, the air and water are fully mixed and atomized. Effectively improve the oxygen transfer efficiency and power efficiency.
其优点在于：Its advantages are:
(1)动力效率和氧转移率高，动力消耗低；(1) High power efficiency and oxygen transfer rate, low power consumption;
(2)可靠性好，无堵塞，使用寿命长，维修量少；(2) Good reliability, no blockage, long service life and less maintenance;
(3)设备投资运行成本低；(3) Low equipment investment and operation cost;
(4)可以分散沉降性能差的絮状污泥；(4) It can disperse flocculent sludge with poor settling performance;
(5)适合大型和较深的池型(5) Suitable for large and deep pool types
四、附图说明4. Description of drawings
附图为供气式低压射流曝气器的结构示意图；The accompanying drawing is a schematic structural diagram of an air-supply low-pressure jet aerator;
五、具体实施方式5. Specific implementation
附图为本实用新型的具体实施例；Accompanying drawing is the specific embodiment of the utility model;
下面结合附图对本实用新型作进一步说明：Below in conjunction with accompanying drawing, the utility model is further described:
参照附图所示，供气式低压射流曝气装置，包括固定在一起的一级喷嘴1和二级喷嘴2，一级喷嘴1套装在二级喷嘴2内，一级喷嘴1与二级喷嘴2之间有一个空间较大的一个湍流混合室3，一级喷嘴1和二级喷嘴2采用直径由大到小的收缩形式，一级喷嘴1和二级喷嘴2之间的湍流混合室3与水流方向垂直的面积大于一级喷嘴1的截面积。Referring to the drawings, the air-supply low-pressure jet aeration device includes a primary nozzle 1 and a secondary nozzle 2 fixed together, the primary nozzle 1 is set in the secondary nozzle 2, the primary nozzle 1 and the secondary nozzle There is a turbulent mixing chamber 3 with a large space between the 2. The first-stage nozzle 1 and the second-stage nozzle 2 adopt a shrinking form from large to small in diameter. The turbulent mixing chamber 3 between the first-stage nozzle 1 and the second-stage nozzle 2 The area perpendicular to the water flow direction is larger than the cross-sectional area of the primary nozzle 1 .
而没有自吸式射流曝气器在水的进入和排出之间的收缩管结构。空气在压力下进入湍流混合室3，而不是仅仅依靠泵的动力推动液体高速流动形成的真空吸入空气。二级喷嘴2的尾部是一个收缩口。一级喷嘴1与二级喷嘴2固定连为一体，其工作服务面积最大可达到50m2，氧利用效率25％--35％，动力效率4.5-5.8KgO2/Kw.h，使用有效水深4-10m。And there is no shrink tube structure between the water inlet and outlet of the self-priming jet aerator. Air enters the turbulent mixing chamber 3 under pressure, instead of relying solely on the power of the pump to push the liquid to flow at high speed to form a vacuum to suck in air. The tail of the secondary nozzle 2 is a contraction port. The first-stage nozzle 1 and the second-stage nozzle 2 are fixedly connected as a whole, and its working service area can reach 50m 2 at most, the oxygen utilization efficiency is 25%-35%, the power efficiency is 4.5-5.8KgO 2 /Kw.h, and the effective water depth is 4 -10m.
一级喷嘴1和二级喷嘴2之间形成湍流混合室3，鼓风送来的低压空气直接进入到湍流混合室3，循环废水在循环泵的压力下通过一级喷嘴1高速进入湍流混合室3，在湍流混合室3里与鼓风送来的低压空气充分混合，二级喷嘴2的尾部是迅速收缩的，在循环废水中含有大量的生物污泥，气、水和污泥的混合物在湍流混合室3里经过一个压力增高的过程，将混合物的气泡突然分散成为极其微小的气雾，高速喷射曝气池，达到了空气中的氧气向液相快速转移的目的。A turbulent mixing chamber 3 is formed between the primary nozzle 1 and the secondary nozzle 2. The low-pressure air sent by the blast directly enters the turbulent mixing chamber 3, and the circulating waste water enters the turbulent mixing chamber through the primary nozzle 1 at high speed under the pressure of the circulating pump. 3. In the turbulent mixing chamber 3, it is fully mixed with the low-pressure air sent by the blast. The tail of the secondary nozzle 2 shrinks rapidly, and a large amount of biological sludge is contained in the circulating wastewater. The mixture of air, water and sludge is in the The turbulent mixing chamber 3 undergoes a process of increasing pressure to suddenly disperse the bubbles of the mixture into extremely small aerosols, which are sprayed into the aeration tank at high speed, so as to achieve the purpose of rapid transfer of oxygen in the air to the liquid phase.
本实用新型采用池底水平式出水，气泡可以在池中得到更长的流线，同样水深时停留时间较其它曝气器增加一倍以上，同时适合更深的曝气池使用，进一步提高了氧转移效率。由于气液固三项混合物在湍流混合室里，经过强烈的混合、压缩、扩散的作用，加大了曝气池中污泥对废水中有机污染物的吸附速率，促使循环废水中的有机污染物的分解和沉降，达到了废水净化的目的。The utility model adopts the horizontal water outlet at the bottom of the pool, and the bubbles can get a longer streamline in the pool, and the residence time of the same water depth is more than double that of other aerators, and it is suitable for use in deeper aeration tanks, further improving oxygen transfer efficiency. Due to the strong mixing, compression, and diffusion of the gas-liquid-solid mixture in the turbulent mixing chamber, the adsorption rate of the sludge in the aeration tank to the organic pollutants in the wastewater is increased, and the organic pollution in the circulating wastewater is promoted. Decomposition and sedimentation of substances, to achieve the purpose of wastewater purification.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032627866U CN2641035Y (en) | 2003-09-22 | 2003-09-22 | Air supply low pressure jet aerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU032627866U CN2641035Y (en) | 2003-09-22 | 2003-09-22 | Air supply low pressure jet aerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2641035Y true CN2641035Y (en) | 2004-09-15 |
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ID=34296981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU032627866U Expired - Fee Related CN2641035Y (en) | 2003-09-22 | 2003-09-22 | Air supply low pressure jet aerator |
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| Country | Link |
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| CN (1) | CN2641035Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102502960A (en) * | 2011-12-26 | 2012-06-20 | 陕西清源环境实业有限公司 | Gas-liquid blending and stirring device of sewage-sludge complete mixing type anaerobic fermentation tank and treatment method thereof |
| CN105174458A (en) * | 2015-10-14 | 2015-12-23 | 吉林省拓达环保设备工程有限公司 | JAS dual-purpose aerator |
| CN109368824A (en) * | 2018-12-08 | 2019-02-22 | 中国二十二冶集团有限公司 | Efficient jet aerator |
| CN110386751A (en) * | 2019-07-10 | 2019-10-29 | 浙江海牛环境科技股份有限公司 | A kind of sludge treating system of anti-system jams and anti-anaerobic phosphorus release |
-
2003
- 2003-09-22 CN CNU032627866U patent/CN2641035Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102502960A (en) * | 2011-12-26 | 2012-06-20 | 陕西清源环境实业有限公司 | Gas-liquid blending and stirring device of sewage-sludge complete mixing type anaerobic fermentation tank and treatment method thereof |
| CN102502960B (en) * | 2011-12-26 | 2014-02-26 | 陕西清源环境实业有限公司 | Gas-liquid blending and stirring device of sewage-sludge complete mixing type anaerobic fermentation tank and treatment method thereof |
| CN105174458A (en) * | 2015-10-14 | 2015-12-23 | 吉林省拓达环保设备工程有限公司 | JAS dual-purpose aerator |
| CN109368824A (en) * | 2018-12-08 | 2019-02-22 | 中国二十二冶集团有限公司 | Efficient jet aerator |
| CN110386751A (en) * | 2019-07-10 | 2019-10-29 | 浙江海牛环境科技股份有限公司 | A kind of sludge treating system of anti-system jams and anti-anaerobic phosphorus release |
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| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |