CN2104216U - Pure oxygen aeration waste gas treating technology device - Google Patents
Pure oxygen aeration waste gas treating technology device Download PDFInfo
- Publication number
- CN2104216U CN2104216U CN91217969U CN91217969U CN2104216U CN 2104216 U CN2104216 U CN 2104216U CN 91217969 U CN91217969 U CN 91217969U CN 91217969 U CN91217969 U CN 91217969U CN 2104216 U CN2104216 U CN 2104216U
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- China
- Prior art keywords
- waste water
- reaction tank
- oxygenator
- biochemical reaction
- oxygen
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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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- Activated Sludge Processes (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
The utility model relates to a waste gas treating technology device, which can be used for various organic waste water treatment. The pure oxygen aeration waste gas treating technology device is characterized in that the aeration and the biochemical reactions can be respectively carried out in an oxygenator and a biochemical reaction tank. The oxygenator has simple structure, and having high gas dissolving efficiency and the safety; the dissolved oxygen in the waste water can be reached to 40-80 mg/liter, and the active sludge concentration in the biochemical reaction tank can be reached to 4-8 grams/liter. The BOD eliminating rate is more than 90 percent, and the oxygen utilization rate can be reached to 100 percent. A portion of treated waste water can be use in circulation, and the rest of the treated waste water can be reached to the waste water discharge standard through precipitation.
Description
The utility model relates to wastewater processing technology in a kind of field of environment protection.Be applicable to the processing of organic waste waters such as chemical industry, food, light industry, refining of petroleum, printing and dyeing and municipal sanitary sewage.
Activated sludge process is traditional wastewater processing technology.Usually use air aeration to supply with the required oxygen of microbial activities.Because the branch of oxygen forces down in the air, oxygen in water concentration is also low, so the supply of oxygen and transmission are biochemical treatment process key constraints.
Environment in recent years protection field; adopt the pure oxygen aeration wastewater processing technology; the characteristics of this technology are the dividing potential drops that can increase oxygen; improve mass transfer, to obtain higher dissolved oxygen, under high-solubility oxygen (＞6 mg/litre) situation; microbic activity is improved; wastewater treatment is strengthened, and therefore, the pure oxygen aeration wastewater processing technology is the new technology of attracting attention now.
U.S. combinating carbide company (U, C, C) developed UNOX pure oxygen aeration technology in 1966, and its aeration tank is a closed structure, is divided into 4～5 cells, waste water from the bottom successively by each chamber; The top aerating oxygen in pond.Each cell is equipped with a surface aeration machine, makes oxygen soluble in water.This processing unit complex structure, surface aeration machine are particular design as required, oxygen can be dispersed into trickle bubble, make it soluble in water rapidly, so oxygen supply speed height, and waste water contains higher dissolved oxygen.Activated sludge concentration in the aeration tank is 4～6 grams per liters.Waste water after the processing is discharged after the settling tank clarification, and spissated mud is back to the aeration tank.This pure oxygen aeration also is furnished with the automatic monitoring and the regulator control system of processing parameter, can carry out automatically water temperature, flow, oxygen in water, mud quantity of reflux etc. and measure, and shows by computer, and the rotating speed of oxygen-supplying amount, aerator is carried out automatic control.The used surface aeration machine structure of prior art is very complicated, and its requirement on machining accuracy is also very high.When containing fiber substance in the waste water, easily be wrapped on the blade of surface aeration machine, cause normally aeration.Closed structure is adopted in aeration tank in the prior art processes equipment, and volatile organic matter and oxygen can form inflammable and explosive mixture in the waste water, for guaranteeing safety operation, the explosion-proof automatic monitoring system of cover system must be installed.Because of the tail gas of this technology is continuous emptying, the utilization ratio of oxygen is the highest has only 90%.
The utility model aims to provide a kind of brand-new pure oxygen aeration technology, is characterized in that aeration and biochemical reaction carry out in oxygenator and two equipment of reaction tank respectively, can therefore solve the making difficulty of accurate aerator without surface aeration machine.Oxygenator in the present technique is an independent device, can place outside the biochemical reaction tank, and oxygen is dissolved in the waste water; Its another characteristics biochemical reaction tank opens wide, and the process unit that the aerating apparatus improvement cost technology of traditional activated sludge process can be provided promptly utilizes original aeration tank to transform biochemical reaction tank as, and the improvement of existing apparatus is had practical significance.
The accompanying drawing 1 that below provides is pure oxygen aeration waste water treatment process device major equipment and process flow diagram.
Be described further below in conjunction with accompanying drawing.
Pending waste water is at first flow to mixing pit (1), waste water is mixed with returned sluge and recirculated water.By transferpump (2) blended waste water is sent into oxygenator (3).Waste water only needs to stop can reach 40～80 mg/litre dissolved oxygens in 0.5～2.0 minute in oxygenator, enters biochemical reaction tank (5) from the bottom by sparger (4) then.Activated sludge concentration in the biochemical reaction tank can reach 4～6 grams per liters, and from bottom to top the organism in the waste water is degraded under the active sludge effect, and dissolved oxygen is consumed, and the dissolved oxygen of water outlet is reduced to 1～2 mg/litre.A water part of discharging is back to mixing pit (1) as recirculated water (7), and another part enters settling tank (6), discharges after the precipitation clarification.Precipitate spissated mud and be back to mixing pit (1) through returned sluge system (8).Regulate the working pressure that outlet valve (9) is controlled oxygenator (3) according to arts demand, generally be controlled at 0.02～0.5MPa.The supply of oxygen can be carried out automatic control by control instruments (10).Automatically adjust quantity of circulating water by Controlling System (11), can guarantee that wastewater treatment moves under optimum process condition.
Oxygenator in the utility model process unit (3), can adopt prior art to manufacture jetting type, filling type, turbulent shear formula, (CN.216598.1) as the oxygenator of process unit of the present invention, effect is better with the approved utility model patent of the inventor " a kind of efficient molten gas equipment ".Adopt this molten gas equipment, oxygen is all dissolved and the time of reach capacity (or supersaturation) only needed for tens seconds.If this oxygenator is placed below ground,, can increase substantially power efficiency of oxygen supply with making full use of the statical head of water.The oxygenator of this closed structure, its advantage is no mechanical transmission apparatus, do not have the machinery friction, do not add lubricant, not filled, safe and reliable, do not need to install equipment such as flame-proof explosion-proof, also solved in the waste water and caused problems such as twining obstruction because of containing fiber substance, therefore, maintenance easily.
The mud that refluxes is to enter biochemical reaction tank (5) before, and earlier by oxygenator, the activity of mud is recovered and strengthened at this moment.Solved the Technology that in oxygenator, can finish sludge activation.
Existing traditional aerating activated sludge process or UNOX technology, air-flow or mechanical agitation are strong in the aeration tank, and the mud floc sedimentation has the shortcoming that is broken in the pond.Yet, adopt this process unit, aeration no longer takes place in biochemical reaction tank, waste water is slow upper reaches from the bottom, has only the gas-solid phase in the pond; Sludge concentration, organic loading, dissolved oxygen also reduce gradually from bottom to top and match each other, and constitutes good biochemical condition, so not only the mud floc sedimentation is big and solid, and the dissolved oxygen utilization ratio can reach 100%.Biochemical reaction tank must be not airtight.
The utility model adopts Controlling System (11) to implement its sewage backflow technology, purpose is to increase carrying of oxygen, and backflow sewage mixed with raw waste water regulate water quality, also can reach sewage drainage standard (integrated wastewater discharge standard GB8978-88) for the bigger sewage of the higher variation water quality of Pollutant levels.Below be the experimental study result who reaches discharging standards.
Handle waste water: the urban comprehensive wastewater
Treatment scale: 24 cubic metres/day
Water quality: water inlet COD200～300 mg/litre
BOD150～200 mg/litre
Water outlet COD＜80 mg/litre
BOD＜30 mg/litre
COD clearance～75%
BOD clearance～90%
Biochemical reaction tank sludge concentration: 5.3 grams per liters
The water conservancy residence time: 3.5 hours
High-solubility oxygen: 60 mg/litre
Oxygen-consumption (every kilogram of COD oxygen-consumption): 0.87 kilogram
Coefficient of oxygen utilization :～100%
Handle waste water: wastewater from chemical industry
Treatment scale: 2400 cubic metres/day
Water quality: water inlet COD800～1000 mg/litre
BOD400～600 mg/litre
Water outlet COD＜150 mg/litre
BOD＜60 mg/litre
COD clearance～80%
BOD clearance～90%
Biochemical reaction tank sludge concentration: 4.8 grams per liters
The water conservancy residence time: 4.2 hours
High-solubility oxygen: 50 mg/litre
Oxygen-consumption (every kilogram of BOD oxygen-consumption): 0.98 kilogram
Coefficient of oxygen utilization :～100%
Claims (3)
1, a kind of pure oxygen aeration is handled the waster water process device, major equipment comprises: mixing pit (1), circulating water system (7), returned sluge system (8), transferpump (2), oxygenator (3), sparger (4), biochemical reaction tank (5), settling tank (6), it is characterized in that each equipment will carry out by following technical process: waste water in mixing pit (1) with circulating water system (7) in recirculated water and the returned sluge in the returned sluge system (8) mix mutually, with transferpump (2) blended waste water is sent into oxygenator (3), waste water after the oxygenation from bottom to top enters biochemical reaction tank (5) from the bottom through sparger (4), a part is back to mixing pit (1) by circulating water system (7), another part drains into settling tank (6) discharging again after precipitation clarification, precipitates spissated mud and is back to mixing pit (1) by returned sluge system (8) enters biochemical reaction tank (5) again after oxygenator (3) oxygenation.
2, by the described oxygenator of claim 1 (3), it is characterized in that it being the molten gas equipment that is placed in outside the biochemical reaction tank.
3, by the described biochemical reaction tank of claim 1 (5), it is characterized in that device structure opens wide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91217969U CN2104216U (en) | 1991-07-05 | 1991-07-05 | Pure oxygen aeration waste gas treating technology device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN91217969U CN2104216U (en) | 1991-07-05 | 1991-07-05 | Pure oxygen aeration waste gas treating technology device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2104216U true CN2104216U (en) | 1992-05-13 |
Family
ID=4925526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN91217969U Granted CN2104216U (en) | 1991-07-05 | 1991-07-05 | Pure oxygen aeration waste gas treating technology device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2104216U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1045173C (en) * | 1995-12-22 | 1999-09-22 | 武汉晶源环境工程有限公司 | Aeration sea water type technology for removing sulphur from smoke and aeration device |
| CN102715111A (en) * | 2012-06-26 | 2012-10-10 | 北京大学 | Dissolved oxygen control method for sediment spiked toxicity test by using gammarid |
| CN102992483A (en) * | 2011-09-15 | 2013-03-27 | 林德股份公司 | Oxygen treatment of water and pulp from paper or cardboard production |
| CN103068745A (en) * | 2010-06-08 | 2013-04-24 | 戴维·A·克里丹斯 | Systems and methods for control of a gas or chemical |
| CN105540996A (en) * | 2015-12-09 | 2016-05-04 | 大唐国际化工技术研究院有限公司 | Method and system for processing coal-gasification waste water |
-
1991
- 1991-07-05 CN CN91217969U patent/CN2104216U/en active Granted
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1045173C (en) * | 1995-12-22 | 1999-09-22 | 武汉晶源环境工程有限公司 | Aeration sea water type technology for removing sulphur from smoke and aeration device |
| CN103068745A (en) * | 2010-06-08 | 2013-04-24 | 戴维·A·克里丹斯 | Systems and methods for control of a gas or chemical |
| CN103068745B (en) * | 2010-06-08 | 2014-07-30 | 戴维·A·克里丹斯 | Systems and methods for control of a gas or chemical |
| CN102992483A (en) * | 2011-09-15 | 2013-03-27 | 林德股份公司 | Oxygen treatment of water and pulp from paper or cardboard production |
| CN102992483B (en) * | 2011-09-15 | 2017-03-01 | 林德股份公司 | In paper or production, the oxygen of water and paper pulp is processed |
| CN102715111A (en) * | 2012-06-26 | 2012-10-10 | 北京大学 | Dissolved oxygen control method for sediment spiked toxicity test by using gammarid |
| CN105540996A (en) * | 2015-12-09 | 2016-05-04 | 大唐国际化工技术研究院有限公司 | Method and system for processing coal-gasification waste water |
| CN105540996B (en) * | 2015-12-09 | 2018-12-25 | 大唐国际化工技术研究院有限公司 | A kind of coal gasification waste water processing method and processing system |
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| C14 | Grant of patent or utility model | ||
| 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 |