CN110170257A - A kind of liquid phase dissolved oxygen filling apparatus and method - Google Patents
A kind of liquid phase dissolved oxygen filling apparatus and method Download PDFInfo
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- CN110170257A CN110170257A CN201910386246.XA CN201910386246A CN110170257A CN 110170257 A CN110170257 A CN 110170257A CN 201910386246 A CN201910386246 A CN 201910386246A CN 110170257 A CN110170257 A CN 110170257A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/2319—Methods of introducing gases into liquid media
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/235—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids for making foam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/40—Static mixers
- B01F25/45—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads
- B01F25/452—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by elements provided with orifices or interstitial spaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/21—Measuring
- B01F35/211—Measuring of the operational parameters
- B01F35/2113—Pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/22—Control or regulation
- B01F35/2201—Control or regulation characterised by the type of control technique used
- B01F35/2202—Controlling the mixing process by feed-back, i.e. a measured parameter of the mixture is measured, compared with the set-value and the feed values are corrected
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/22—Control or regulation
- B01F35/221—Control or regulation of operational parameters, e.g. level of material in the mixer, temperature or pressure
- B01F35/2211—Amount of delivered fluid during a period
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/22—Control or regulation
- B01F35/221—Control or regulation of operational parameters, e.g. level of material in the mixer, temperature or pressure
- B01F35/2213—Pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/305—Treatment of water, waste water or sewage
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The present invention relates to liquid phase dissolved oxygen filling apparatus, including water tank, metering pump, oxygen collecting bar, ozone generator, air water dispersion membrane and filling pipeline；The input terminal of the output end connection metering pump of water tank, the output end of metering pump are sequentially connected pressure reducing valve, regulating valve and flowmeter, the input terminal of the output end connection air water dispersion membrane of flowmeter；The output end of oxygen collecting bar or ozone generator is sequentially connected pressure reducing valve, regulating valve, flowmeter and pressure gauge, the input terminal of the output end connection air water dispersion membrane of pressure gauge；The output end of air water dispersion membrane passes sequentially through regulating valve and connects filling pipeline with pressure gauge.The beneficial effects of the present invention are: the invention discloses a kind of methods and liquid phase dissolved oxygen filling apparatus for carrying out oxygen or ozone filling using liquid phase oxygen carrier, pass through pressurization and film disperse technology, oxygen in water concentration and oxygen/ozone nano bubble concentration is respectively increased, so that heavy-oxygen-enriched water oxygen carrier amount be significantly increased.
Description
Technical field
The heavy-oxygen-enriched water used the invention belongs to occasions such as organic waste water advanced oxidation, soil remediation, power plant's feed water oxygenations adds
Note field, and in particular to one kind increases the dispersion and dissolution of oxygen or ozone by pressurization and film disperse technology in water, thus
The device and method for carrying out the filling of liquid phase dissolved oxygen.
Background technique
Organic wastewater with the implementation of increasingly strict environmental emission standard, including Fenton method, Ozone etc.
Advanced oxidation processing technique starts to be widely used in mentioning in mark upgrading transformation for the fields such as medicine, chemical industry sewage treatment facility.It passes
The ozonation aerated method for oxidation of system is that ozone gas directly passes through aerator and diffuses to waste water and react with organic matter, dissolve with
Reaction efficiency is more low, causes the prominent questions such as energy waste and measuring difficulties.In recent years, using fine ozone gas
The sewage-treatment plant of bubble, which can dissolve ozone, to be dispersed in water, and carries out quantitative filling according to the treating capacity of pollutant.But
The advanced oxidation ability of this device is limited under normal pressure ozone lower solubility in water, if being increased in water using pressurization
Ozone solubility, ozone oxidation effect can be greatly enhanced.Relevant references are as follows:
Li Jing, application [J] the pollution prevention technique of Liu Guorong ozone high grade oxidation technology in the treatment of waste water, 2007,
(6):55-57,116.
Ozone reduces progress [J] water supply and drainage of fouling membrane in Song Yali, Gao Naiyun, Dong Bingzhi water process,
2006,(S1):18-21.
Y.h.Chen, C.Y.Chang, C.Y.Chiu wait .Dynamic behavior of ozonation with
pollutant in a countercurrent bubble column with oxygen mass transfer[J]
.Water Research,2003,37(11):2583-2594.
Microbe soil recovery technique is an emerging important technology of environment protection field, is now widely used for pesticide or stone
In the farmland of oily pollution.After usual agricultural land soil is by prolonged pesticide or oil pollution, pollution range and depth become very
Extensively, pollution concentration is very low, it is difficult to using the methods of elution, steam extraction centralized processing.This kind of pollution can be using in situ, long
Effect, the microbe soil recovery technique of low cost are effectively treated: the microorganisms such as aerobic mushroom can use the oxygen in soil
Gas, pointedly degrade organo-arsenic and persistence organic pollutant such as Polychlorinated biphenyls and polycyclic aromatic hydrocarbon.This microorganism remediation side
Method is difficult to go deep into the soil of internal layer, because the oxygen content in deep soil is decreased obviously.Therefore in order to enhance microbe soil
The effect in intrazonal soil is repaired, then needs to be additionally provided the oxygen that aerobic microbiological reparation uses into soil.Liquid phase is molten
Oxygen can be delivered to required soil remediation layer, carried out slow by oxygen filling easily by being laid with the comb network that drips
Release.Relevant references are as follows:
Luo Yongming's contaminated soil remediation Status of Research and trend [J] chemical progress, 2009, (Z1): 558-565.
Thermal power plant feedwater piping high temperature High-pressure supercritical water can generate significant chemical attack to tube wall, and high
The supercritical water of speed flowing can also impact tube wall oxide layer, and corrosion is brought to accelerate.Therefore most domestic fired power generating unit is adopted at present
The processing mode that feed water oxygenation is carried out with gaseous state oxygen aoxidizes boiler tubing by the dissolved oxygen in supercritical water, obtains densification
Ferroso-ferric oxide oxidation film, to inhibit to flow accelerated corrosion, the cleaning frequency of prolonged boiler ensures the safe operation of power plant,
Save pipe-line maintenance fund and manpower.At present power plant's feedwater oxygen treatment using oxygen gas be directly added into water supply by the way of,
The problems such as there is feedbacks to lag, accuracy controlling is difficult.Because on the one hand with the consumption of oxygen so that the pressure of gas busbar connector
Power changes, and another aspect power plants generating electricity load adjusts the variation for also bringing water supply back pressure frequently, due to gas volume
Compressible character, the variation meeting of these two aspects pressure working condition is so that oxygen additional amount generates fluctuation on a large scale, it is difficult to timely, essence
Dissolved oxygen content in the feedback regulation water supply of true ground, thus change the generation of boiler tubing oxide layer and loss rate constantly, into
And the effect of oxygenated treatment is caused to decline.If therefore oxygen first to be dissolved in the heavy-oxygen-enriched water for being formed in water and stablizing dissolved oxygen amount after, then will
In the heavy-oxygen-enriched water injection water supply of " rigidity ", then feedwater oxygen treatment can be made to increase stability and Modulatory character.Coherent reference text
It offers as follows:
Research [J] water of the accurate Feedwater Oxygenated Treatment of Liu Chunhong, Shi Guozhong capital construction ultra supercritical 1000MW unit
Processing technique, 2013, (6): 109-111,115.
Shi Guozhong, Liu Chunhong .1000MW unit accurately control application [J] Zhejiang electric power of combined water treatment, and 2014,
(11):55-57,65.
Solubility and gas pressure are in relationship close to direct ratio to the gases such as oxygen or ozone in water, therefore can pass through increasing
The pressure for adding air dissolving system makes the dissolved oxygen amount in water be more than normal pressure saturation dissolved oxygen amount and be multiplied.Furthermore oxygen or ozone exist
Can not only exist in the form of dissolved oxygen in water, if undissolved gas bubbles can be uniformly dispersed in water, in liquid phase oxygenation
Air Bubble Size (such as nano bubble) is kept in injection process, then the oxygen carrier amount of heavy-oxygen-enriched water can further be made to increase.Correlation ginseng
It is as follows to examine document:
Ming geng,Zhenhao duan.Prediction of oxygen solubility in pure water
and brines up to high temperatures and pressures[J].Geochimica et
Cosmochimica Acta,2010,74(19):5631-5640.
In summary, it would be highly desirable to research and develop one kind be able to satisfy organic waste water advanced oxidation, microbe soil reparation, Power Plant to
The liquid phase dissolved oxygen filling apparatus and method that the application of the fields such as water oxygenation needs.
Summary of the invention
The purpose of the present invention is overcoming deficiency in the prior art, provides and a kind of liquid phase oxygen carrier is utilized to carry out oxygen or ozone
By pressurization and film disperse technology oxygen in water concentration and nano bubble concentration is respectively increased, thus greatly in the method for filling
Width increases heavy-oxygen-enriched water oxygen carrier amount.
Liquid phase dissolved oxygen filling apparatus, including water tank, metering pump, oxygen collecting bar, ozone generator, air water dispersion membrane and add
Infuse pipeline；The input terminal of the output end connection metering pump of water tank, the output end of metering pump are sequentially connected pressure reducing valve, regulating valve and stream
Meter, the input terminal of the output end connection air water dispersion membrane of flowmeter；The output end of oxygen collecting bar or ozone generator is successively
Connect pressure reducing valve, regulating valve, flowmeter and pressure gauge, the input terminal of the output end connection air water dispersion membrane of pressure gauge；Air water point
The output end for dissipating film passes sequentially through regulating valve and connects filling pipeline with pressure gauge；Demineralized water in water tank is forced by metering pump
Certain pressure simultaneously quantifies output, and the high pressure oxygen or ozone that demineralized water and oxygen collecting bar or ozone generator input are in air water point
It dissipates and disperses to mix in film, in the heavy-oxygen-enriched water input filling pipeline of air water dispersion membrane output.
As preferred: input terminal and two output ends there are two being set on air water dispersion membrane；Two inputs of air water dispersion membrane
End inputs demineralized water and oxygen or ozone respectively；One output end of air water dispersion membrane exports heavy-oxygen-enriched water, another output according to
Secondary connection pressure gauge and shut-off valve.
As preferred: oxygen is provided by oxygen gas cylinders group by oxygen collecting bar, and ozone is by using oxygen or air as gas source
Ozone generator provide.
As preferred: air water dispersion membrane is hollow fiber film structure, and gas is internally spread by the outside of doughnut, gas
Body portion is dissolved in water and forms dissolved oxygen, is partially mixed to form nano bubble with water；The gas side of air water dispersion membrane uses closed-end structure,
Gas side and water side are co-flow；The water side of air water dispersion membrane and gas side pressure difference are no more than 1Bar；Hollow-fibre membranes material is adopted
With polytetrafluoroethylene (PTFE) or highly crystalline Kynoar.
The oxygenation amount control method of liquid phase dissolved oxygen filling apparatus, includes the following steps:
1) after presetting the input of oxygenation numerical quantity, by oxygen-adding amount PID controller according to the inclined of oxygen-adding amount setting value and show value
Poor size, controls metering pump and gas control valve adjusts the flow and gas flow of water respectively；
2) when oxygen-adding amount setting value and the deviation of show value are greater than 10%, adjusting metering pump makes filling water increasing add deduct
It is few, and judge through excess pressure PID controller, if air water dispersion membrane gas side pressure value and the pressure difference of water side pressure value are greater than
1Bar, then pressure to the film pressure at both sides difference for controlling gas pressure reducer adjustment gas are less than 1Bar；
3) when oxygen-adding amount setting value and the deviation of show value are less than 10%, regulating gas regulating valve makes the gas flow of dissolution
It increases or decreases, and judges through excess pressure PID controller, if the pressure difference of air water dispersion membrane gas side pressure value and water side pressure value
Greater than 1Bar, then pressure to the film pressure at both sides difference for controlling gas pressure reducer adjustment gas is less than 1Bar.
The beneficial effects of the present invention are: the invention discloses a kind of sides for carrying out oxygen or ozone filling using liquid phase oxygen carrier
Oxygen in water concentration and oxygen/smelly has been respectively increased by pressurization and film disperse technology in method and liquid phase dissolved oxygen filling apparatus
Oxygen nano bubble concentration realizes efficient, stable, fast accurate liquid phase dissolved oxygen filling so that heavy-oxygen-enriched water oxygen carrier amount be significantly increased.
It is the easy reliable, efficient stable of this method and device, safe and practical.Present invention accomplishes organic waste water advanced oxidations, microorganism soil
The application of the fields such as earth reparation, Power Plant feed water oxygenation needs, and is that one of the art has specific aim and practicability
Technological invention.
Detailed description of the invention
Fig. 1 is system flow schematic diagram of the invention；
Fig. 2 is the principle that oxygen/ozone occurs gas-liquid mixed with water in hollow fiber film assembly and dissolves in the present invention
Figure；
Fig. 3 is that system finely controls schematic diagram to oxygen-adding amount in the present invention.
Description of symbols: water tank 1, metering pump 2, oxygen collecting bar 3, ozone generator 4, air water dispersion membrane 5, filler pipe
Road 6.
Specific embodiment
The present invention is described further below with reference to embodiment.The explanation of following embodiments is merely used to help understand this
Invention.It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, also
Can be with several improvements and modifications are made to the present invention, these improvement and modification also fall into the protection scope of the claims in the present invention
It is interior.
The liquid phase dissolved oxygen filling apparatus, including water tank 1, metering pump 2, oxygen collecting bar 3, ozone generator 4, air water
Dispersion membrane 5, filling pipeline 6.The input terminal of the output end connection metering pump 2 of water tank 1, the output end of metering pump 2, which is sequentially connected, to be subtracted
Pressure valve, regulating valve and flowmeter, the input terminal of the output end connection air water dispersion membrane 5 of flowmeter.Oxygen collecting bar 3 or ozone hair
The output end of raw device 4 is sequentially connected pressure reducing valve, regulating valve, flowmeter and pressure gauge, the output end connection air water dispersion of pressure gauge
The input terminal of film 5.The output end of air water dispersion membrane 5 passes sequentially through regulating valve and connects filling pipeline 6 with pressure gauge.
Input terminal and two output ends there are two being set on air water dispersion membrane 5；Two input terminals difference of air water dispersion membrane 5 is defeated
Enter demineralized water and oxygen or ozone；One output end of air water dispersion membrane 5 exports heavy-oxygen-enriched water, and another output is sequentially connected pressure
Power meter and shut-off valve.
After liquid phase dissolved oxygen filling apparatus mixes water and oxygen (ozone) pressurization, the method for progress liquid phase injection.
Demineralized water in water tank 1 is forced into certain pressure by metering pump 2 and quantitatively exports, with oxygen collecting bar 3 or ozone
High pressure oxygen/ozone that generator 4 inputs disperses to mix in air water dispersion membrane 5, obtains heavy-oxygen-enriched water and inputs filling pipeline 6
In, the filling of liquid phase dissolved oxygen is carried out to aerobic unit.
Output pressure of the demineralized water after metering pump 2 in water tank 1 can add according to the back pressure or reality of filling pipeline 6
Note needs, and suitable decompressed pressure is selected to be regulated and controled, and makes its output keep stablizing by fluid cushion tank；Output flow can root
Factually border oxygen demand signal feedback carries out variable frequency adjustment.
Present invention can apply to the filling of the liquid phase dissolved oxygen of oxygen or ozone, and wherein oxygen can pass through oxygen by oxygen gas cylinders group
Gas busbar connector 3 provides, and ozone can be by providing using oxygen or air as the ozone generator 4 of gas source.
By metering pump 2 and the devices such as oxygen collecting bar 3 or ozone generator 4, the accurate injection rate for controlling heavy-oxygen-enriched water and
Its oxygen carrier amount.Regulation to water flow is to realize that the regulation to oxygen carrier amount is by oxygen collecting bar by 2 frequency control of metering pump
3 or ozone generator 4 pressure and flow control of oxygen/ozone realized.
Course of dissolution is realized in air water dispersion membrane 5.In air water dispersion membrane 5, oxygen or ozone are in film water side
Meltage can carry out feedback regulation by film gas side partial pressure and flow.Air water dispersion membrane 5 selects hollow fiber film structure, gas
It is internally spread by the outside of doughnut.Oxidation corrosion of the ozone to film in order to prevent, Hollow-fibre membranes material need to be selected poly-
Tetrafluoroethene (PTFE) or corrosion resistant highly crystalline Kynoar (PVDF).
Oxygen/ozone is dispersed by air water dispersion membrane 5, and gas is partially soluble in water and forms dissolved oxygen, partially mixes shape with water
At nano bubble.Air water disperses film device gas side and uses closed-end structure, and gas side and water side are co-flow, to realize gas and water temperature
Be sufficiently mixed.Larger size bubble is avoided to draw also for the nano bubble obtained in liquid phase for protection hollow fiber film thread
Turbulent flow is played, the pressure difference of film water side and gas side must not exceed 1Bar.Under uniform pressure and flow condition, the gases such as oxygen/ozone
The size of bubble and dissolution dispersibility are mainly bullied water dispersion membrane aperture, fibre count and effect length in water.After dispersion
Heavy-oxygen-enriched water enter in filling pipeline 6 filling to target device unit or aerobic zone.
In order to protect air water dispersion film device and control accurate oxygen-adding amount, the control method that this patent uses includes following step
It is rapid:
1, after presetting the input of oxygenation numerical quantity, by oxygen-adding amount PID controller according to the inclined of oxygen-adding amount setting value and show value
Poor size, controls metering pump 2 and gas control valve adjusts the flow and gas flow of water respectively；
2, when oxygen-adding amount setting value and the deviation of show value are greater than 10%, adjust metering pump 2 make to fill water increase or
It reduces, and judges through excess pressure PID controller, if 5 gas side pressure value of air water dispersion membrane and the pressure difference of water side pressure value are greater than
1Bar, then pressure to the film pressure at both sides difference for controlling gas pressure reducer adjustment gas are less than 1Bar, play protection air water dispersion membrane 5
Effect；
3, when oxygen-adding amount setting value and the deviation of show value are less than 10%, regulating gas regulating valve makes the gas flow of dissolution
It increases or decreases, and judges through excess pressure PID controller, if the pressure of air water dispersion membrane 5 gas side pressure value and water side pressure value
Difference is greater than 1Bar, then pressure to the film pressure at both sides difference for controlling gas pressure reducer adjustment gas is less than 1Bar, plays protection air water
The effect of dispersion membrane 5.
Filling pipeline counterbalance valve is adjusted, 0.2MPa is set as；The frequency of metering pump 2 is adjusted, setting water flow is
1180L/h；Demineralized water passes through the fluid cushion tank before metering pump 2, keeps finally obtained heavy-oxygen-enriched water filling pressure and adding amount steady
It is set to 0.2MPa and 1180L/h.The outlet pressure and rate of discharge of oxygen collecting bar 3 are controlled by pressure reducing valve and regulating valve
System obtains the oxygen gas of regime flow after buffering by gas buffer tank.
Control 5 inlet oxygen pressure of air water dispersion membrane is respectively 0.167,0.17,0.188,0.212,0.215,
0.22MPa, the stable heavy-oxygen-enriched water of available flowing, gas flow is respectively 1.312,1.336,1.665,3.135,
3.604,3.472NL/min, when filling, are observed that many nano bubbles, illustrate the oxygen carrying capability of heavy-oxygen-enriched water while including molten
Solve oxygen and nano bubble.
According to oxygen-enriched water flow 1180L/h it can be calculated that being about 2 atmospheric pressures when injection hydraulic pressure is 0.2MPa
Under, after the oxygen mix dispersion of air water dispersion membrane 5 and different pressures, obtain oxygen carrier amount be respectively 95.30,97.05,
119.93,227.72,261.79,252.20mg/L stable heavy-oxygen-enriched water.Under conditions of oxygen-enriched water pressure only improves 2 times, on
Stating highest oxygen carrier result but can achieve nearly 25 times of normal pressure saturated dissolved oxygen (10mg/L), this shows the liquid that the present invention uses
Phase dissolved oxygen charging method can promote the dissolution and load capacity of oxygen in water well, obtain stable oxygen-enriched of large capacity
Water.
The invention discloses a kind of methods and liquid phase dissolved oxygen filling dress that oxygen or ozone filling are carried out using liquid phase oxygen carrier
It sets.After demineralized water is pressurizeed by metering pump 2, mixes, stablized with high pressure oxygen/ozone in corrosion resistant hollow-fibre membrane
High concentration heavy-oxygen-enriched water, carry out the filling of liquid phase dissolved oxygen to target device unit and aerobic zone.The present invention passes through pressurization and film point
The technology of dissipating, is respectively increased oxygen in water concentration and oxygen/ozone nano bubble concentration, so that heavy-oxygen-enriched water oxygen carrier be significantly increased
It measures, realizes efficient, stable, fast accurate liquid phase dissolved oxygen filling, it is sub that the foregoing is merely presently preferred embodiments of the present invention.The party
Method and device can be applied to the fields such as organic waste water advanced oxidation, soil remediation, power plant's feed water oxygenation, and it is steady that operation is easy and efficient
It is fixed, safe and practical.
Claims (5)
1. a kind of liquid phase dissolved oxygen filling apparatus, which is characterized in that including water tank (1), metering pump (2), oxygen collecting bar (3), smelly
Oxygen Generator (4), air water dispersion membrane (5) and filling pipeline (6)；The input terminal of output end connection metering pump (2) of water tank (1),
The output end of metering pump (2) is sequentially connected pressure reducing valve, regulating valve and flowmeter, and the output end of flowmeter connects air water dispersion membrane
(5) input terminal；The output end of oxygen collecting bar (3) or ozone generator (4) is sequentially connected pressure reducing valve, regulating valve, flowmeter
And pressure gauge, the input terminal of output end connection air water dispersion membrane (5) of pressure gauge；The output end of air water dispersion membrane (5) successively leads to
It overregulates valve and connects filling pipeline (6) with pressure gauge；Demineralized water in water tank (1) is forced into certain pressure by metering pump (2)
And output is quantified, the high pressure oxygen or ozone that demineralized water and oxygen collecting bar (3) or ozone generator (4) input disperse in air water
Dispersion mixes in film (5), in heavy-oxygen-enriched water input filling pipeline (6) of air water dispersion membrane (5) output.
2. liquid phase dissolved oxygen filling apparatus according to claim 1, which is characterized in that there are two being set on air water dispersion membrane (5)
Input terminal and two output ends；Two input terminals of air water dispersion membrane (5) input demineralized water and oxygen or ozone respectively；Air water point
An output end for dissipating film (5) exports heavy-oxygen-enriched water, and another output is sequentially connected pressure gauge and shut-off valve.
3. liquid phase dissolved oxygen filling apparatus according to claim 1, which is characterized in that oxygen passes through oxygen by oxygen gas cylinders group
Busbar connector (3) provides, and ozone using oxygen or air as the ozone generator (4) of gas source by providing.
4. liquid phase dissolved oxygen filling apparatus according to claim 1, which is characterized in that air water dispersion membrane (5) is doughnut
Membrane structure, gas are internally spread by the outside of doughnut, and gas is partially soluble in water and forms dissolved oxygen, partially mix shape with water
At nano bubble；The gas side of air water dispersion membrane (5) uses closed-end structure, and gas side and water side are co-flow；Air water dispersion membrane (5)
Water side and gas side pressure difference be no more than 1Bar；Hollow-fibre membranes material uses polytetrafluoroethylene (PTFE) or highly crystalline Kynoar.
5. a kind of oxygenation amount control method of liquid phase dissolved oxygen filling apparatus as described in claim 1, which is characterized in that including such as
Lower step:
1) big according to the deviation of oxygen-adding amount setting value and show value by oxygen-adding amount PID controller after presetting the input of oxygenation numerical quantity
It is small, it controls metering pump (2) and gas control valve adjusts the flow and gas flow of water respectively；
2) when oxygen-adding amount setting value and the deviation of show value are greater than 10%, adjusting metering pump (2) makes filling water increasing add deduct
It is few, and judge through excess pressure PID controller, if air water dispersion membrane (5) gas side pressure value and the pressure difference of water side pressure value are greater than
1Bar, then pressure to the film pressure at both sides difference for controlling gas pressure reducer adjustment gas are less than 1Bar；
3) when oxygen-adding amount setting value and the deviation of show value are less than 10%, regulating gas regulating valve increases the gas flow of dissolution
Or reduce, and judge through excess pressure PID controller, if the pressure difference of air water dispersion membrane (5) gas side pressure value and water side pressure value
Greater than 1Bar, then pressure to the film pressure at both sides difference for controlling gas pressure reducer adjustment gas is less than 1Bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910386246.XA CN110170257A (en) | 2019-05-09 | 2019-05-09 | A kind of liquid phase dissolved oxygen filling apparatus and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910386246.XA CN110170257A (en) | 2019-05-09 | 2019-05-09 | A kind of liquid phase dissolved oxygen filling apparatus and method |
Publications (1)
| Publication Number | Publication Date |
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| CN110170257A true CN110170257A (en) | 2019-08-27 |
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| CN201910386246.XA Pending CN110170257A (en) | 2019-05-09 | 2019-05-09 | A kind of liquid phase dissolved oxygen filling apparatus and method |
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2019
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