CN207671781U - A kind of bubble-free aeration system for river water harnessing - Google Patents
A kind of bubble-free aeration system for river water harnessing Download PDFInfo
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- CN207671781U CN207671781U CN201721424528.7U CN201721424528U CN207671781U CN 207671781 U CN207671781 U CN 207671781U CN 201721424528 U CN201721424528 U CN 201721424528U CN 207671781 U CN207671781 U CN 207671781U
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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 utility model discloses a kind of bubble-free aeration systems for river water harnessing, including air inlet module, aeration module and release module, the aeration module to include：Air inlet film wire end is equipped with inlet chamber, air inlet and air inlet film wire fixing port, air inlet and is connected to the air inlet module；Film wire component, one end are incorporated into the air inlet film wire fixing port, and the film wire component uses surface fenestra size for 0.05~0.2 μm of hollow-fibre membrane；Deflation film wire end, equipped with air discharge cavity, gas vent and deflation film wire fixing port for integrating the film wire component other end, the gas vent is connected to by control valve with release module；The utility model aerating system and aeration method have the advantage that：The gas-liquid mass transfer interface that unit volume air provides is big, and diffusion effect is good, and the utilization rate of oxygen reaches 75% or more, and the content increase of oxygen in water is more, while also carrying out internal system purging, improves aeration efficiency.
Description
Technical field
The utility model is related to aerator technical fields, more particularly to a kind of bubble-free aeration system for river water harnessing
System.
Background technology
River is open waters, and the water surface is narrow, long flow path；Its primary pollution source has：Sanitary sewage, agricultural effluent, cultivation
Industry waste water, by processing or untreated industrial wastewater etc..
Sanitary sewage is the sewage produced by town dweller's daily life, and inorganic salts content is larger, other organic contaminations
Object amount is few but type is more.Pesticide, chemical fertilizer residual be the major pollutants of agricultural effluent, as large agricultural country, China is discharged into river
The agricultural effluent amount of stream is very big.The feces of livestock and poultry returning to the field rate of aquaculture is only 30%~50%, the animal dung without safe handling
Just direct emission can cause nitrogen and phosphorus pollution, make body eutrophication.Industry sewage/wastewater in China's passes through inside plants/industry mostly
Garden two-stage treatment, is discharged into He Hai；Even if the self-cleaning burden of water body can be increased if the industrial sewage/wastewater of qualified discharge.
The pollution of river causes very big threat to the daily life of the people, safe drinking water.Channel pollution control mainly has physics
Method, chemical method, bioanalysis.
Physical includes：(1) dirty shunting is cut, is shunted by rain/sewage, the sewage for being directly discharged into city river originally is received
Collection handles rear discharge up to standard, cuts down the total amount of pollutant for being discharged into river to municipal sewage plant or artificial swamp.(2) diversion
Dirt removal replaces polluted river water with clean river, by pollutant dilution or brings downstream into, reduces pollutional load.Diversion dirt removal
It can only dilute or shift, the total amount of pollutant cannot be reduced.(3) Sediment Dredging, the organic matter in bed mud occur under bacterial action
It decomposes, the dissolved oxygen concentration in water can be reduced, generate the foul gas such as hydrogen sulfide, hydrogen phosphide, river water blackening is made to foul；Bed mud is dredged
Release of the pollutant to water body in bed mud can be reduced by dredging.But its quantities is big, if the dynamics of removing is excessive, can dwell a large amount of bottom life
Object, aquatic plant zones water-outlet body destroy original biological catenary system.Dredging generates a large amount of mud, and processing is not good at, can be caused secondary
Pollution.
Chemical method includes：(1) chemical algae removing destroys collastromin with chemicals, is divided into algicide except algae, coagulating sedimentation agent
Except algae, chemical oxidizing agent remove algae.This method is simple for process, except algae speed is fast, strong operability, but the usage amount of additive is to removing algae effect
Fruit is affected, and is easy to cause secondary pollution.(2) chemistry of heavy metal is fixed, and the heavy metal under certain condition in bed mud can be with
Ionic state or certain reference state enter water body；Alkaline matter is added, heavy metal forms slightly solubility sediment, is fixed in bed mud.
The method is quick, easy to operate, can effectively inhibit heavy metal to enter water body with solubilised state, but excessive application can be to aquatic ecosystem
System exerts an adverse impact.
Bioanalysis includes：(1) microbial method utilizes the absorption of aerobic bacteria, anaerobic bacteria or facultative aerobe, degradable organic pollutant.
The method organic loading height, carrier large specific surface area, treatment effeciency are high.(2) restoration of the ecosystem, the water for taking various method reparations impaired
The body ecosystem restores ecological group and structure in river, keeps river ecosystem reasonable for structure good with the function of motion.
Anaerobic bio-treated is that under anoxic conditions, anaerobe or amphimicrobe are by the macromolecular in waste water
Amount organic matter resolves into the organic matter of relatively small molecular weight, and a portion is converted to better simply inorganic matter (such as titanium dioxide
Carbon) or organic matter (such as methane).Aerobic biological process is under aerobic conditions, and aerobic microbiological or facultative aerobic microbiological will be dirty
Water small molecular amount oxidation operation decomposes, and a part of organic matter is assimilated, absorbed, and is converted to the microorganism of proliferation, another
Then by oxygenolysis at simple inorganic matter (such as carbon dioxide, water, nitrate ion), the energy of release disappears for bacterium for part
Consumption.
Most of organic matter in the river water body of pollution is small-molecular-weight, so the microbial method pollution treatment master of river sewage
If carrying out oxidative degradation to organic molecule using aerobic bacteria；To ensure good regulation effect, to ensure foot in urban river water
Enough dissolved oxygens.
It is all to blast air to the aeration plate in water by pipeline using air blower to increase dissolved oxygen at present, is roused through aeration plate
The bubble gone out is larger, floats up to the water surface quickly, and the residence time is short in water, and the oxygen in bubble only has minor proportion to be dissolved in water
In, the utilization rate about 10%~20% of oxygen；What other gases dissolved in water --- volatile organic gas or anaerobism generated
Methane, hydrogen sulfide --- it can enter air with bubble and environment is caused centainly to pollute；A large amount of bubbles can form foam in the water surface.
Utility model content
The utility model provides a kind of bubble-free aeration system for river water harnessing, can carry out bubble-free aeration, exposes
The bubble generated on air film is small (being visually hardly visible), and oxygen is transmitted to fast as the process of dissolved oxygen in water in bubble, is made
The content of oxygen in water increases more, the ratio of reduction biological anaerobic degradation organic matter, the methane and other objects that anaerobism generates
The amount of matter is also seldom.Because mass transfer effect is good, the bubble total volume for floating to the water surface is significantly smaller than the bubble totality that aeration generates
Product, the volatile gas dissolved in the water of air is entered with bubble and is greatly reduced.Compared with tradition is aerated, bubble-free aeration is in the water surface
On do not generate foam substantially.
A kind of bubble-free aeration system for river water harnessing, including air inlet module, aeration module and release module, it is special
Sign is that the aeration module includes：
Air inlet film wire end is equipped with air inlet, inlet chamber and air inlet film wire fixing port, air inlet and the air inlet module
Connection；
Film wire component, one end are incorporated into the air inlet film wire fixing port, and the film wire component uses outer surface fenestra size
For 0.05~0.2 μm of hollow-fibre membrane；
Deflation film wire end, equipped with air discharge cavity, gas vent and deflation film for integrating the film wire component other end
Silk fixing port, the gas vent are connected to by control valve with release module.
Air inlet module is used to fresh air being passed through aeration module, and the aeration module in the application uses in the very little of aperture
Empty fiber membrane, the bubble diameter that aeration process generates are not more than 1 micron, and the gas-liquid mass transfer interface that unit volume air provides is big,
Diffusion effect is good, and the utilization rate of oxygen reaches 75% or more；These bubbles have become very little when rising to the water surface, enter with bubble
The volatile organism of air greatly reduces；The content increase of oxygen in water is more, reduces biological anaerobic degradation organic matter
Ratio, anaerobism generate methane and other substances amount it is also seldom.
In order to improve aeration quantity, increase aeration area, it is preferred that the film wire component includes multilayer, and every layer by more
Empty fiber membrane weaves slabbing.Hollow-fibre membrane will not change because of the flowing of water, be aerated in water close by braiding, its spacing
Degree is uniform always；Hollow-fibre membrane is greatly enhanced by processing, hydro-oleophobicity, and film surface resistance tocrocking is lasting.
In order to improve aeration quantity, increase aeration area, it is further preferred that air inlet film wire end, film wire component and
Deflation film wire end be equipped with it is multigroup, each group film wire component is spaced and is arranged parallel to from top to bottom.
In order to realize continuous aeration, it is preferred that the aeration module is equipped in parallel two, while accessing the air inlet mould
Block and it is separately installed with switch valve.Aeration module needs are timed purging, therefore are unable to continuous work, aeration module in parallel
It can be aerated and be purged respectively, to realize continuous work.
It in order to facilitate the installation of and manufactures, it is preferred that the release module is that release is managed, and is directly in communication with the outside, two exposures
Gas module accesses the release by control valve respectively and manages.
Air inlet module can be active air inlet, can also be natural inflow, it is preferred that the air inlet module includes connecting successively
The wind turbine and air filter connect, the gas outlet of the air filter are connect with the air inlet of air inlet film wire end.Also
Pressure regulator valve and pressure gauge can be installed after air filter to control the air pressure for entering air inlet film wire end.
In order to reduce energy consumption, increase natural inflow, it is preferred that the air inlet module further includes being accessed with the fan parallel-connection
The natural inflow unit of air filter.
In order to improve natural inflow amount, it is preferred that the natural inflow unit include band variable wind target gas gathering mask and
Attached check valve.Band variable wind target gas gathering mask collects natural wind, after natural wind reaches certain rank, the natural wind that collects
Pressure is more than the back pressure after check valve, and check valve is opened, and the natural wind collected is incorporated to air filter upstream line, is supplied
Gas.There is the connection that can be rotated freely on the pipeline of gas gathering mask, is installed after gas gathering mask and turn to weathercock, such gas gathering mask can basis
The variation of natural wind direction changes direction, remains that gas gathering mask collects natural wind with maximum area.
In order to reduce energy consumption, natural energy is made full use of, it is preferred that the air inlet module further includes the sun powered for wind turbine
It can power supply system.Solar electric power supply system converts sunlight into electric energy, the operating power as wind turbine.
A kind of bubble-free aeration method for river water harnessing uses the above-mentioned bubble-free aeration system for river water harnessing
System, includes the following steps or process：
(1) aeration module is introduced external air by air inlet module；
(2) aeration process：The valve for being aerated module rear is closed, and is divided into three into the air inside hollow-fibre membrane
Point, first part forms bubble by the fenestra of doughnut film outer surface and enters water body, second part air by " dissolving ---
The pattern of diffusion " is entered with molecular state in water, is directly dissolved in water, Part III air is accumulated in internal system；
It is divided into three parts into the air inside hollow-fibre membrane：The fenestra that first part passes through doughnut film outer surface
It forms bubble and enters water body, second part air (mainly oxygen) enters water by the pattern of " dissolving --- diffusion " with molecular state
In, it is directly dissolved in water, Part III air is accumulated in internal system.When outer surface fenestra is less than 0.1 μm, aeration generates
Bubble be not more than 1 μm, the oxygen in part (first part) bubble diffuses to liquid phase by gas-liquid interface, becomes dissolving
Oxygen；This part bubble diameter is small, within the residence time in (bubble is detached from film surface and floats to time of the water surface) bubble 75% with
On oxygen can be spread to and form dissolved oxygen in water；The chemical potential of hollow fiber film thread internal oxygen, which is more than in external water, to be dissolved
The chemical potential of oxygen, so oxygen can be directly entered water with the pattern of " dissolving --- diffusion " by non-porous sections on hollow-fibre membrane
In, become dissolved oxygen, this is second part.This two-part oxygen is total oxygen that system is provided to urban river water.
(3) purge：When internal system oxygen content reduces, the valve for being aerated module rear is opened, and is put described in connection
Gas port and release module are purged, and the air in film wire component and subsequent pipeline is blown into release module, is discharged into air；
(4) alternately, a cycle of operation is 20~40 minutes, wherein being aerated for aeration process (2) and purge (3)
Process is 15~35 minutes, and purge is 3~7 minutes.
It is further preferred that in step (4), the aeration module is equipped in parallel two, while accessing the air inlet mould
Block and it is separately installed with switch valve, remains that at least one aeration module is in aeration process.
It is further preferred that in step (4), any one is aerated exposure of the purge in another aeration module of module
Gas process carries out after starting 5~15 minutes.To make the purge of any one aeration module be in another aeration mould
The stage casing time of block aeration process, to which aeration efficiency be effectively ensured.
During a bubble-free aeration, internal system oxygen content can continuously decrease, gaseous carbon dioxide, water content
Increase and (is entered inside film wire from water with the pattern of " dissolving --- diffusion ")；It needs to carry out film wire internal sweep, to reduce by two
The content of carbonoxide, water increases oxygen content, improves aeration efficiency.
The beneficial effects of the utility model：
The bubble-free aeration system and aeration method for river water harnessing of the utility model, generates in aeration process
Bubble diameter is not more than 1 micron, and the gas-liquid mass transfer interface that unit volume air provides is big, and diffusion effect is good, and the utilization rate of oxygen reaches
To 75% or more, the bubble for rising to the water surface is small, and the volatile organism that air is entered with bubble greatly reduces；It can make in water
Higher dissolved oxygen content is kept, the ratio of biological anaerobic degradation organic matter, the methane and other substances that anaerobism generates are reduced
Amount is also seldom；Internal system purging is also carried out simultaneously, to reduce the content of carbon dioxide, water, is increased oxygen content, is improved aeration
Efficiency.
Description of the drawings
Fig. 1 is the structural schematic diagram of the bubble-free aeration system for river water harnessing of the utility model.
Fig. 2 is the structural schematic diagram of the aeration module of the bubble-free aeration system for river water harnessing of the utility model.
Fig. 3 is the knot of another angle of the aeration module of the bubble-free aeration system for river water harnessing of the utility model
Structure schematic diagram.
Fig. 4 is the wire frame structure schematic diagram of solar powered module.
Specific implementation mode
As shown in Figures 1 to 3, the bubble-free aeration system for river water harnessing of the present embodiment includes：Solar powered mould
Block 1, Multi-stage centrifugal fan 2, air-blower control valve 3, gas gathering mask 5, attached check valve 6, air filter 7, gas with steering weathercock 4
Two aeration modules 10, time switch valve 11 and the release pipe 12 of body regulating valve 8, access gas control valve 8 in parallel.
The outlet of Multi-stage centrifugal fan 1 is connect with air filter 7, and air filter 7 is followed by gas control valve 8, gas tune
Section valve 8 is followed by two aeration modules 10 in parallel, then time switch valve 11 of connecting respectively after aeration module 10 and couples
Enter to discharge pipe 12.
Collect natural wind with the gas gathering mask 5 for turning to weathercock 4, when the natural ventilation pressure collected is higher than 6 back pressure of attached check valve, list
It is opened to valve, the natural wind collected imports pipeline and enters air filter 7, a gas source as bubble-free aeration.
As shown in figure 4, solar powered module 1 converts sunlight into electric energy, the operating as Multi-stage centrifugal fan 2 is dynamic
Power.
Aeration module 10 is placed in iron frame 105, two nozzles of three membrane are simultaneously by parallel connection of tiling above and below three membrane
Connection is connected on pipeline.Each membrane is fixed on two irons 104 of top.
Each membrane includes：Air inlet film wire end 101 is equipped with air inlet, inlet chamber and air inlet film wire fixing port, air inlet
Mouth is connected to air filter 7；
Film wire component 102, one end are incorporated into air inlet film wire fixing port, film wire component use surface fenestra size for 0.05~
0.2 μm of hollow-fibre membrane；
Deflation film wire end 103, equipped with for integrating 102 other end of film wire component deflation film wire fixing port, air discharge cavity,
Gas vent, gas vent are connected to by time switch valve 11 with release pipe 12.
Film wire component 102 is made of woven hollow-fibre membrane, and hollow-fibre membrane is handled through perfluoro-compound, hydrophobic oleophobic
Property is stronger；Doughnut film outer surface maximum fenestra aperture is no more than 0.1 μm.
Using the system of the present embodiment be aerated there are two types of operating status：Bubble-free aeration and internal sweep.
Bubble-free aeration：
Air pressurizes through Multi-stage centrifugal fan 2, is purified into air filter 7, then micro- by the progress of gas control valve 8 pressure
Voltage stabilizing is adjusted, is divided into two parts after voltage stabilizing, into two aeration modules 10 in parallel, is distributed through air supply header and enters each membrane
Air inlet pipe enters back into inside every hollow-fibre membrane；Under this operating status, time switch valve, which is in, closes shape
State is divided into three parts into the air inside hollow-fibre membrane：First part is less than 0.1 micron by doughnut film outer surface
Fenestra water body is entered with the bubble no more than 1 micron, the oxygen in bubble diffuses to liquid phase by gas-liquid interface, becomes dissolving
Oxygen, this part bubble diameter is small, within the residence time in (bubble is detached from film surface and floats to time of the water surface) bubble 75% with
On oxygen can be spread to and form dissolved oxygen in water, second part air (mainly oxygen) is by the mould of " dissolving-diffusion " stream
Formula is entered by the non-bore portion in film wire surface in water with molecular state, is directly dissolved in water, this two-part oxygen is system
The total oxygen provided to urban river water；Remaining air is accumulated in internal system in addition to this two parts.
Meanwhile the carbon dioxide that organism in water breathing generates is flowed higher than the balanced contents in air by " dissolving-diffusion "
Pattern entered inside hollow-fibre membrane by the non-bore portion in film wire surface with molecular state；Likewise, a part of water is also with molecule
Form is entered by the pattern of " dissolving-diffusion " stream inside hollow-fibre membrane.
Gas gathering mask 5 collects natural wind, and after natural wind reaches certain rank, the natural wind pressure collected is more than attached list
Back pressure to after valve 6, check valve are opened, and the natural wind collected is incorporated to 7 upstream line of air filter.On the pipeline of gas gathering mask 5
There is the connection that can be rotated freely, is installed after gas gathering mask 5 and turn to weathercock, such gas gathering mask 5 can be according to the change of nature wind direction
Change and change direction, remains that maximum area collects natural wind.
During a bubble-free aeration, internal system oxygen content can continuously decrease, gaseous carbon dioxide, water content
Increase；It needs to carry out film wire internal sweep, to reduce the content of carbon dioxide, water, increases oxygen content, improve aeration efficiency.
Internal sweep：
Time switch valve 11 is opened, by discharging pipe 12 and atmosphere inside film wire；From multistage centrifugal wind
The fresh air of machine 2 constantly purges, and the air in membrane and subsequent pipeline is blown into release pipe 12, is discharged into air；By 5
The purging of minute, internal system gas each component (especially nitrogen, oxygen, carbon dioxide, water) are consistent with outside air.
The cycle of operation of each aeration module 10 is divided into：25 minutes bubble-free aerations, internal sweep displacement in 5 minutes.
In conclusion the bubble diameter that the system and method for the present embodiment generate in aeration process is not more than 1 micron, list
The gas-liquid mass transfer interface that position volumes of air provides is big, and diffusion effect is good, and the utilization rate of oxygen reaches 75% or more；Rise to the water surface
Bubble is small, and the volatile organism that air is entered with bubble greatly reduces；The content increase of oxygen in water is more, reduces life
The ratio of object anaerobic degradation organic matter, the methane and other amount of substance that anaerobism generates are also seldom.
In addition the hollow-fibre membrane that the equipment involved by the present embodiment uses will not make by braiding because of the flowing of water
Distance becomes smaller or increases between hollow-fibre membrane, and it is uniform always that density is aerated in water；Hollow-fibre membrane is by processing, hydrophobic oleophobic
Property greatly enhances, and film surface resistance tocrocking is lasting.
Claims (9)
1. a kind of bubble-free aeration system for river water harnessing, including air inlet module, aeration module and release module, feature
It is, the aeration module includes：
Air inlet film wire end, is equipped with air inlet, inlet chamber and air inlet film wire fixing port, and air inlet connects with the air inlet module
It is logical；
Film wire component, one end are incorporated into the air inlet film wire fixing port, the film wire component use outer surface fenestra size for
0.05~0.2 μm of hollow-fibre membrane；
Deflation film wire end, it is solid equipped with air discharge cavity, gas vent and deflation film wire for integrating the film wire component other end
Determine mouth, the gas vent is connected to by control valve with release module.
2. being used for the bubble-free aeration system of river water harnessing as described in claim 1, which is characterized in that the film wire component packet
Multilayer is included, every layer weaves slabbing by more hollow-fibre membranes.
3. being used for the bubble-free aeration system of river water harnessing as claimed in claim 2, which is characterized in that air inlet film wire end
Head, film wire component and deflation film wire end are equipped with multigroup, and each group film wire component is spaced and is arranged parallel to from top to bottom.
4. being used for the bubble-free aeration system of river water harnessing as described in claim 1, which is characterized in that the aeration module is set
There are in parallel two, while accessing the air inlet module and being separately installed with switch valve.
5. being used for the bubble-free aeration system of river water harnessing as claimed in claim 4, which is characterized in that the release module is
Release pipe, two aeration modules access the release by control valve respectively and manage.
6. being used for the bubble-free aeration system of river water harnessing as described in claim 1, which is characterized in that the air inlet module packet
Include sequentially connected wind turbine and air filter, the air inlet of the gas outlet of the air filter and air inlet film wire end
Connection.
7. being used for the bubble-free aeration system of river water harnessing as claimed in claim 6, which is characterized in that the air inlet module is also
It include the natural inflow unit that air filter is accessed with the fan parallel-connection.
8. being used for the bubble-free aeration system of river water harnessing as claimed in claim 7, which is characterized in that the natural inflow list
Member includes band variable wind target gas gathering mask and attached check valve.
9. being used for the bubble-free aeration system of river water harnessing as claimed in claim 6, which is characterized in that the air inlet module is also
It include the solar electric power supply system powered for wind turbine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721424528.7U CN207671781U (en) | 2017-10-31 | 2017-10-31 | A kind of bubble-free aeration system for river water harnessing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721424528.7U CN207671781U (en) | 2017-10-31 | 2017-10-31 | A kind of bubble-free aeration system for river water harnessing |
Publications (1)
| Publication Number | Publication Date |
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| CN207671781U true CN207671781U (en) | 2018-07-31 |
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ID=62964910
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| CN (1) | CN207671781U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107758884A (en) * | 2017-10-31 | 2018-03-06 | 杭州安诺过滤器材有限公司 | A kind of bubble-free aeration system and aeration method for river course water harnessing |
| CN117247137A (en) * | 2023-01-10 | 2023-12-19 | 重庆大学 | Aeration system for in-situ ecological elimination of endogenous pollution of water body |
-
2017
- 2017-10-31 CN CN201721424528.7U patent/CN207671781U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107758884A (en) * | 2017-10-31 | 2018-03-06 | 杭州安诺过滤器材有限公司 | A kind of bubble-free aeration system and aeration method for river course water harnessing |
| CN117247137A (en) * | 2023-01-10 | 2023-12-19 | 重庆大学 | Aeration system for in-situ ecological elimination of endogenous pollution of water body |
| CN117247137B (en) * | 2023-01-10 | 2024-04-16 | 重庆大学 | Aeration system for in-situ ecological elimination of endogenous pollution of water body |
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