CN107055825A - One kind prevents Reservoir Eutrophication apparatus and method - Google Patents
One kind prevents Reservoir Eutrophication apparatus and method Download PDFInfo
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- CN107055825A CN107055825A CN201710172245.6A CN201710172245A CN107055825A CN 107055825 A CN107055825 A CN 107055825A CN 201710172245 A CN201710172245 A CN 201710172245A CN 107055825 A CN107055825 A CN 107055825A
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000012851 eutrophication Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 226
- 238000005276 aerator Methods 0.000 claims abstract description 62
- 230000035755 proliferation Effects 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims abstract description 10
- 238000013517 stratification Methods 0.000 claims abstract description 10
- 238000005273 aeration Methods 0.000 claims abstract description 6
- 241000195493 Cryptophyta Species 0.000 claims description 22
- 238000002156 mixing Methods 0.000 claims description 8
- 230000012010 growth Effects 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 5
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- 230000037396 body weight Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 230000005923 long-lasting effect Effects 0.000 claims description 3
- 238000004062 sedimentation Methods 0.000 claims description 3
- 230000005791 algae growth Effects 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 6
- 230000032798 delamination Effects 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000005855 radiation Effects 0.000 description 6
- 241000206761 Bacillariophyta Species 0.000 description 4
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- 238000011069 regeneration method Methods 0.000 description 2
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- 230000002277 temperature effect Effects 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 241000192700 Cyanobacteria Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- UZVHFVZFNXBMQJ-UHFFFAOYSA-N butalbital Chemical compound CC(C)CC1(CC=C)C(=O)NC(=O)NC1=O UZVHFVZFNXBMQJ-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000004663 cell proliferation Effects 0.000 description 1
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- 230000003247 decreasing effect Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
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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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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
Reservoir Eutrophication apparatus and method are prevented the present invention relates to one kind, including：It is arranged on the aerator under the thermal stratification of reservoir water bottom, described aerator is by gas pipeline with setting air compressor to be on the coast connected.The present invention is less than water body density using gas density and water at low temperature volume density is more than the principle of high-temperature water volume density, the water body for making geo-stationary in reservoir or lake by aeration process under water produces vertical and traverse cycle stream, so as to change water temperature delamination situation, improve the Environment of Reservoirs condition of phytoplankton distorted proliferation, while solving the problems, such as to let out cold water phenomenon and reservoir lake eutrophication under as caused by reservoir thermal stratification.
Description
Technical field
Reservoir Eutrophication apparatus and method are prevented the present invention relates to one kind, are a kind of fwaater resources protection, water ecological environment
Protection and the environmental protecting device and method repaired, are a kind of apparatus and method of the improvement water area water-quality such as reservoir or lake.
Background technology
Reservoir all has very important effect in river improvement and water resources development and utilization.And water body prolonged stay storehouse
Area can trigger the change of water body physics and chemistry and environment, and water quality can show the phenomenas different from the river of flowing naturally.It is high
After dam is built up, current slow down in storehouse, and storehouse water regeneration period lengthens, and water body is acted on by solar radiation and convection current mixing and heat transmission,
Form special water temperature structure.That is, under sunshine and temperature effect, storehouse water surface absorbs sunlight shortwave radiation and atmospheric long wave
Most of heat of radiation, water temperature is quickly raised to close with temperature.And the swallow temperature rise of reservoir is slower, remain in that
Relatively low temperature, forms obvious thermal stratification structure.It is referred to as into stratotype reservoir in the reservoir of this water temperature state.Forming water
In the reservoir of temperature layering, the water temperature of lower floor is much lower compared with Thermocline.Therefore, when being fetched water from lower floor, the cold water of lower section
The phenomenon of outflow is referred to as cold water phenomenon.Cold water is let out under reservoir can influence fish spawning and the growth of crops.
In addition, the water temperature characteristic of reservoir is the important indicator of Reservoir Water Quality, and directly affect other water quality index.Reservoir area
Nutrient salts persistently accumulate, develop into the higher water body of nutrient concentration, cause the phytoplankton abnormality proliferation such as blue algae, algae
China causes the water surface that green is presented, and the problems such as peculiar smell occurs in water supply water body has a strong impact on landscape and be referred to as rich battalion with the phenomenon of water
Fosterization phenomenon.Phytoplankton in reservoir area can be divided into blue algae, green algae and Diatomeae this three classes, wherein green algae and Diatomeae
It is substantially almost motionless, and there is the intracellular type that has bubble and can move up and down in blue algae.Therefore, reservoir temperature point
When layer is stablized and water does not flow, blue-green algae easily gathers water surface top layer.Also, green algae and diatom for being trapped in middle lower floor
For class, it is possible to use illumination reduce, the quantity of green algae and Diatomeae is gradually decreased, and as a result causes blue algae to occupy excellent
Gesture.
The environmental factor of phytoplankton breeding has sunshine, water body holdup time, water temperature and nutritive salt.The growth of phytoplankton
It is to be carried out under the conditions of synthetic reaction-photosynthesis of organic matter exceedes decomposition reaction-breathing, this process needs sufficient light
According to condition.Downward light weakens quickly in water body, and water more depths photosynthesis is weaker.The breeding of phytoplankton is with water body in reservoir
The interior holdup time is closely related.The holdup time of water body is shorter, and the flow velocity of reservoir water body is faster, and the phytoplankton in reservoir area is filled
Dividing will update before propagation, it is difficult to occur abnormality proliferation.In addition, the speed of cell proliferation caused by the photosynthesis of algae with
Water temperature rises and accelerated, and can decline if some boundary is exceeded.The breeding of algae needs and the suitable water temperature of its species,
Compared with Diatomeae, the photosynthetic preference temperature of blue algae is higher.
Prior art does not have any method substantially to these problems of depth of water deeper water, is simply stirred in the water surface,
Or set the modes such as diversion tunnel to stir water body in depth of water higher depth, but act on not fairly obvious.
The content of the invention
In order to overcome problem of the prior art, the present invention, which proposes one kind, prevents Reservoir Eutrophication apparatus and method.Institute
The apparatus and method stated make the water body of geo-stationary in reservoir or lake produce vertical and traverse cycle by aeration process under water
Stream, solves the problem of phytoplankton distorted proliferation and reservoir lake eutrophication.
The object of the present invention is achieved like this：One kind prevents Reservoir Eutrophication device, including：It is arranged on to form temperature
The aerator of the reservoir bottom of layering, described aerator is by gas pipeline with setting air compressor to be on the coast connected.
Further, described aerator includes：The folding body of two hemisphericals or two semi-cylindricals, described folding
The side of body is connected provided with hinge and with base, and described base is fixed on the storehouse bottom of reservoir.
Further, the cross sectional shape of described folding body is one kind in circular, square or rectangular.
Further, described folding body is provided with the spring for closing folding body.
Further, described folding body is provided with draining pump.
The step of a kind of method for preventing Reservoir Eutrophication of use said apparatus, methods described, is as follows：
Air is transported in the aerator that reservoir bottom is set by gas pipeline using air compressor；
When the air pressure torque in aerator and folding body dead-load moment sum are more than external water pressure force square and spring tension torque
During sum：
P Gas×h 0 gas+G Weight×h 0 weight＞P Water×h 0 water+F Spring×h 0 spring（1）
Folding body is opened, and discharges compressed air, forces to add air into water body；
In formula,P GasThe minimum internal air pressure opened for folding body, uses formula（2）Calculate；h 0 gasFor axle o extremelyP GasIt is vertical away from
From；G WeightFor aerator left or right folding body weight,h 0 weightFor axle o extremelyG WeightHorizontal range；P WaterThe water pressure of aerator is acted on,
It is horizontally oriented water pressureP xWaterWith vertical direction water pressureP zWaterMake a concerted effort,P xWater、P zWaterWithP WaterFormula is used respectively（3）、（4）With（5）
Calculate；h 0 waterFor axle o extremelyP WaterVertical range；F SpringTo connect the spring tension of left and right sides folding body,h 0 springFor axle o extremelyF Spring's
Vertical range；
P Gas= p Gas×A Gas（2）
In formula,P GasFor aerator air pressure inside,A GasFor aerator inside projected area in the horizontal direction；
P xWater=γ h c×A xWater（3）
In formula,γFor the unit weight of water,h cFor the depth of water at the aerator centre of form,A xWaterFor outside aerator in horizontal projected area；
P zWater=1/2γ V p （4）
In formula,V p For the volume of aerator；
（5）
Water body enters in aerator after aerator folding body is opened, and folding body or so water pressure reaches balance, while spring
Pulling force torque is more than folding body gravity torque, and folding body is begun to shut off；After completely closing, draining pump is started working, and discharge exposes
Water body inside gas device, while air is transported to the aeration that reservoir bottom is set by air compressor on the bank by gas pipeline
In device, process formula：
F Spring×h Spring＞G Weight×h Weight（6）
In formula,h SpringFor axle o extremelyF SpringVertical range,h WeightFor axle o extremelyG WeightHorizontal range；
The water of surrounding is involved in wherein by the air discharged from aerator；
The low temperature water body being involved in air rises to the water surface with gas, and air is dispersed into air；
The water rapidly horizontal proliferation of the water surface is risen to, in the formation lateral current flowing of the reservoir water surface；
Rise after the bottom water at low temperature spread the upper water higher with temperature is mixed and occur drastically to decline；
After drastically declining, the horizontal proliferation at the water layer of equal densities；
The larger water body of density is in sinking watching, and the warm water of the less surface part of ambient density is also involved in, from bottom volume
After the water mixing of different densities that are entering and being involved in from upper strata, sedimentation and horizontal proliferation downwards；
When aerator is long lasting for folding repeatedly, the water body upper portion in intermediate layer is set to increase, lower portion declines, finally,
Upper strata integrally turns into mixed layer；During the flow down of intermediate layer, mixed layer is integrally formed in lower floor；Mixed layer destroys various algae
Growth conditions, it is suppressed that the growth of algae.
The beneficial effect comprise that：The present invention is less than water body density using gas density and water at low temperature volume density is big
In the principle of high-temperature water volume density, the water body for making geo-stationary in reservoir or lake by aeration process under water produces vertical and horizontal stroke
To recycle stream, so as to change water temperature delamination situation, improve the Environment of Reservoirs condition of phytoplankton distorted proliferation, while solving by water
Cold water phenomenon and reservoir lake eutrophication problem are let out under caused by the thermal stratification of storehouse.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the structural representation of the described device of embodiments of the invention one；
Fig. 2 is the heat exchange schematic diagram of the reservoir water surface and with the increased water temperature change curve of the depth of water；
The structural representation of aerator described in Fig. 3 embodiments of the invention two, four, five；
Fig. 4 is the schematic diagram of folding body circular section shape described in embodiments of the invention three, is A-A profiles in Fig. 3；
Fig. 5 is the schematic diagram of folding body square cross-sectional shaped described in embodiments of the invention three, is A-A profiles in Fig. 3；
Fig. 6 is the schematic diagram of folding body rectangular cross sectional shape described in embodiments of the invention three, is A-A profiles in Fig. 3；
Fig. 7 is the principle schematic of the methods described of the embodiment of the present invention six；
Fig. 8 is the schematic diagram of calculating folding body critical air pressure in the methods described of the embodiment of the present invention six；
Fig. 9 is housing closure Force Calculation schematic diagram in the methods described of the embodiment of the present invention six.
Embodiment
Embodiment one：
The present embodiment is that one kind prevents Reservoir Eutrophication device, as shown in Figure 1.The present embodiment includes：It is arranged on to form temperature
The aerator 2 of the reservoir bottom of layering 1, the air compressor 4 of described aerator by gas pipeline 3 with setting on the coast connects
Connect.
After high dam is built up, current slow down in storehouse, and storehouse water regeneration period lengthens, and water body is by solar radiation and convection current mixing and heat
Transmitting effect, forms special water temperature structure, sees Fig. 2.That is, under sunshine and temperature effect, it is short that storehouse water surface absorbs sunlight
Most of heat of wave radiation and long _ wave radiation, water temperature is quickly raised to close with temperature.And the deep water body temperature of reservoir
Rise slower, remain in that relatively low temperature, form obvious thermal stratification structure（The water temperature seen in Fig. 2 is increased with the depth of water
Change curve）.It is referred to as into stratotype reservoir in the reservoir of this water temperature state.In the reservoir for forming water temperature delamination, the water of lower floor
Temperature is much lower compared with Thermocline.
The main thought of the present embodiment is, by manufacturing intermittent ascending air at storehouse bottom, to be driven using the rising of air-flow
Water up and down and lateral flow, stable temperature difference between destruction profundal zone and shoaling layer, that is, destroy the growing environment of algae,
Suppress the growth of algae.
Main three part of the present embodiment is constituted：It is arranged on the aerator, draining pump and the sky for being arranged on bank of reservoir bottom
Air compressor.
Aerator can have diversified forms, as long as sufficiently large intermittent air release can be provided.Such as use one
Planting can be with the spheroid or cylinder of folding, when the air with certain pressure is full of aerator, the critical air pressure in aerator
Torque and folding body dead-load moment sum are more than external water pressure force square and spring tension torque sum, open folding body, release
Air is released, after air is released, folding body is closed automatically under spring force, is inflated again, repeatedly folding, between formation
The air release of having a rest property.
Aerator can be fixed on the bottom of reservoir, can also be arranged on flow device, such as using the submersible of remote control
Deng.Some regions for easily producing algae reproduction of reservoir can set multiple aerators, groups of aerator be formed, to full wafer
Waters carries out algae improvement.The depth of water set by aerator should be below thermal stratification, so as to will be cold below thermal stratification
Water takes the water surface to, realizes that hot and cold water is mixed.
Air compressor can use general air compressor.Hard tube can be used between air compressor and aerator
Or flexible pipe connection, convey air.
Embodiment two：
The present embodiment is the improvement of embodiment one, is refinement of the embodiment one on aerator.Aerator described in the present embodiment
Including：Two hemisphericals or two columned folding bodies 201, the side of described folding body are provided with hinge 202 and and base
203 connections, described base is fixed on the storehouse bottom of reservoir, as shown in Figure 3.
The folding body of aerator described in the present embodiment can be fabricated to housing by the material such as engineering plastics or steel, be formed
Cylinder or spheroid with internal cavities.Two parts contact surface formation folding face of folding body, sets sealing on folding face
Rubber ring.The shape in folding face is the cross sectional shape of folding body, when folding body is ball-type, its folding face（Cross sectional shape）It is round
Shape.When folding body is cylinder, twice of the surface of revolution shape for being shaped as square or rectangular, i.e. cylinder in folding face.
To prevent from entering in folding body compared with bigger material, screen pack can be set on folding face.
The process that folding body is opened, the air being full of by inside, which is formed, makes a concerted effort, and the process closed can use spring etc. to set
Apply.
On the one hand hinge is fixed on base, while connecting two parts of folding body.
Base can be the weights such as concrete block, sink under water, and can also be completely fixed by way of anchoring.
Described folding body can also connect draw water setting, such as water pump, and the water included in folding body after closure is discharged.
Embodiment three：
The present embodiment is the improvement of above-described embodiment, is refinement of the above-described embodiment on folding body.Opening described in the present embodiment
Fit cross sectional shape is circle（As shown in Figure 4）, square（As shown in Figure 5）Or rectangle（As shown in Figure 6）In one kind.
Sealing ring 206 and screen pack 207 are designed with the folding face of folding body.
Example IV：
The present embodiment is the improvement of above-described embodiment, is refinement of the above-described embodiment on folding body.Opening described in the present embodiment
Zoarium is provided with the spring 204 for closing folding body, as shown in Figure 3.
Spring described in the present embodiment can be extension spring, i.e., open on end or torsion spring, that is, pacify installed in folding body
On hinge.
Embodiment five：
The present embodiment is the improvement of above-described embodiment, is refinement of the above-described embodiment on folding body.Opening described in the present embodiment
Zoarium is provided with draining pump 205, as shown in Figure 3.
The effect of draining pump is to discharge the water body inside aerator, while producing a negative pressure in folding body.Work as folding
Body is released after air, when closure by Spring driving, starts draining pump, the current in folding body is produced negative pressure, is worked as folding
After body closure completely, this negative pressure can also guide air to enter, and air is full of into folding intracoelomic cavity together with air compressor.Row
Water pump may be mounted in water, can also be arranged on bank.
Embodiment six：
The present embodiment is a kind of method for preventing Reservoir Eutrophication of use above-described embodiment described device.Described in the present embodiment
Method is less than water body density using gas density and water at low temperature volume density is more than the principle of high-temperature water volume density, by being aerated under water
Process makes reservoir（Or lake）The water body of interior geo-stationary produces vertical and traverse cycle stream, and low temperature water body is with bubble to upstream
The water surface is moved, so as to change reservoir water body thermal stratification situation, improves the Environment of Reservoirs condition of phytoplankton distorted proliferation, simultaneously
Solve the problems, such as to let out cold water phenomenon and reservoir lake eutrophication under as caused by reservoir thermal stratification.
Described method comprises the following steps that principle is as shown in Figure 7：
（One）In the folding body that air is transported to the aerator that reservoir bottom is set using air compressor by gas pipeline.
At this moment folding body is closure, and air enters in the cavity of aerator, increases the air pressure in cavity.
（Two）When the air pressure torque in aerator and folding body dead-load moment sum are more than external water pressure force square and spring
During pulling force torque sum, its active force is as shown in Figure 8：
P Gas×h 0 gas+G Weight×h 0 weight＞P Water×h 0 water+F Spring×h 0 spring（1）
Folding body is opened, and discharges compressed air, forces to add air into water body；
In formula,P GasThe minimum internal air pressure opened for folding body, uses formula（2）Calculate；h 0 gasFor axle o extremelyP GasIt is vertical away from
From；G WeightFor aerator left or right folding body weight,h 0 weightFor axle o extremelyG WeightHorizontal range；P WaterThe water pressure of aerator is acted on,
It is horizontally oriented water pressureP xWaterWith vertical direction water pressureP zWaterMake a concerted effort,P xWater、P zWaterWithP WaterFormula is used respectively（3）、（4）With（5）
Calculate；h 0 waterFor axle o extremelyP WaterVertical range；F SpringTo connect the spring tension of left and right sides folding body,h 0 springFor axle o extremelyF Spring's
Vertical range.
P Gas= p Gas×A Gas（2）
In formula,P GasFor aerator air pressure inside,A GasFor aerator inside projected area in the horizontal direction；
P xWater=γ h c×A xWater（3）
In formula,γFor the unit weight of water,h cFor the depth of water at the aerator centre of form,A xWaterFor outside aerator in horizontal projected area；
P zWater=1/2γ V p （4）
In formula,V p For the volume of aerator；
（5）
Water body enters in aerator after aerator folding body is opened, and folding body or so water pressure reaches balance, while spring
Pulling force torque is more than folding body gravity torque, and folding body is begun to shut off；After completely closing, draining pump is started working, and discharge exposes
Water body inside gas device, while air is transported to the aeration that reservoir bottom is set by air compressor on the bank by gas pipeline
In device, process formula：
F Spring×h Spring＞G Weight×h Weight（6）
In formula,h SpringFor axle o extremelyF SpringVertical range,h WeightFor axle o extremelyG WeightHorizontal range, as shown in Figure 9.
（Three）The water of surrounding is involved in wherein by the air discharged from aerator.It is inevitable after air is gushed out from aerator
Power is acted to the water body of surrounding, surrounding water is stirred and makes air and water body generation mixing by this active force, forms band
There is the water body of air.
（Four）The low temperature water body being involved in air rises to the water surface with gas（Arrow b directions in Fig. 7）, air is dispersed into
In air.The low temperature water body of the air rapid increase in the presence of air is involved in, while the water body around driving together rises, shape
Moment current on under having.It is the relatively low bottom water of water temperature that the water around air is sprayed by folding body, so with sky
The water body density ratio reservoir surface that gas rises is big.
（Five）Rise to the water rapidly horizontal proliferation of the water surface（Arrow c directions in Fig. 7）, transverse direction is formed in the reservoir water surface
Current flow.Water extending transversely is the water of bottom, so its density and the density of bottom water are approached.
（Six）Rise after the bottom water at low temperature spread the upper water higher with temperature is mixed and occur drastically to decline（In Fig. 7
Arrow d directions）.The water body on horizontal proliferation water periphery due to be top layer water, so temperature is higher, density is lighter.Due to heavier
Water risen to from below in lighter water, just drastically decline to a certain degree so only spreading.
（Seven）After drastically declining, the horizontal proliferation at the water layer of equal densities.Due to density difference produce drastically under
Drop is disturbed surrounding water formation, and is mixed with surrounding water（Arrow e directions in Fig. 7）.
（Eight）The larger water body of density is in sinking watching, and the warm water of the less surface part of ambient density is also involved in.
After the water mixing of different densities that are being involved in from bottom and being involved in from upper strata, sedimentation and horizontal proliferation downwards.
（Nine）When aerator is long lasting for folding repeatedly, the water body upper portion in intermediate layer is set to increase, under lower portion
Drop, finally, upper strata integrally turn into mixed layer.During the flow down of intermediate layer, mixed layer is integrally formed in lower floor；Mixed layer is destroyed respectively
Plant the growth conditions of algae, it is suppressed that the growth of algae.
Initially, distribution of water temperature is at a slight tilt, but is mixed by being aerated whole water body repeatedly.Make table by circulating mixing
Layer water temperature drop, so that algae proliferation speed declines, eliminates the dominant condition of blue algae.By circulating mixing control illumination bar
Part, so as to reduce algae reproduction speed, the algae for being not suitable for dark condition is reduced.By circulate mixed diluting blue algae concentration compared with
High superficial water, so as to eliminate the advantage state for having buoyant blue algae.
Finally it should be noted that being merely illustrative of the technical solution of the present invention and unrestricted above, although with reference to preferable cloth
Scheme is put the present invention is described in detail, it will be understood by those within the art that, can be to technology of the invention
Scheme（Form, modes of emplacement, the sequencing of step, utilization of various formula of such as aerator etc.）Modify or wait
With replacing, without departing from the spirit and scope of technical solution of the present invention.
Claims (6)
1. one kind prevents Reservoir Eutrophication device, it is characterised in that including：It is arranged on the reservoir bottom to form thermal stratification
Aerator, described aerator is by gas pipeline with setting air compressor to be on the coast connected.
2. device according to claim 1, it is characterised in that described aerator includes：Two hemisphericals or two and half
The folding body of cylinder, the side of described folding body is connected provided with hinge and with base, and described base is fixed on reservoir
Storehouse bottom.
3. the device according to claim requirement 3, it is characterised in that the cross sectional shape of described folding body is circle, just
One kind in square or rectangle.
4. the device according to claim requirement 2 or 3, it is characterised in that described folding body, which is provided with, closes folding body
The spring closed.
5. the device according to claim requirement 4, it is characterised in that described folding body is provided with draining pump.
6. a kind of usage right requires the method for preventing Reservoir Eutrophication of 1 described device, it is characterised in that described method
The step of it is as follows：
Air is transported in the aerator that reservoir bottom is set by gas pipeline using air compressor；
When the air pressure torque in aerator and folding body dead-load moment sum are more than external water pressure force square and spring tension torque
During sum：
P Gas×h 0 gas+G Weight×h 0 weight＞P Water×h 0 water+F Spring×h 0 spring（1）
Folding body is opened, and discharges compressed air, forces to add air into water body；
In formula,P GasThe minimum internal air pressure opened for folding body, uses formula（2）Calculate；h 0 gasFor axle o extremelyP GasIt is vertical away from
From；G WeightFor aerator left or right folding body weight,h 0 weightFor axle o extremelyG WeightHorizontal range；P WaterThe water pressure of aerator is acted on,
It is horizontally oriented water pressureP xWaterWith vertical direction water pressureP zWaterMake a concerted effort,P xWater、P zWaterWithP WaterFormula is used respectively（3）、（4）With（5）
Calculate；h 0 waterFor axle o extremelyP WaterVertical range；F SpringTo connect the spring tension of left and right sides folding body,h 0 springFor axle o extremelyF Spring's
Vertical range；
P Gas= p Gas×A Gas（2）
In formula,P GasFor aerator air pressure inside,A GasFor aerator inside projected area in the horizontal direction；
P xWater=γ h c ×A xWater（3）
In formula,γFor the unit weight of water,h cFor the depth of water at the aerator centre of form,A xWaterFor outside aerator in horizontal projected area；
P zWater=1/2γ V p （4）
In formula,V p For the volume of aerator；
（5）
Water body enters in aerator after aerator folding body is opened, and folding body or so water pressure reaches balance, while spring
Pulling force torque is more than folding body gravity torque, and folding body is begun to shut off；After completely closing, draining pump is started working, and discharge exposes
Water body inside gas device, while air is transported to the aeration that reservoir bottom is set by air compressor on the bank by gas pipeline
In device, process formula：
F Spring×h Spring＞G Weight×h Weight（6）
In formula,h SpringFor axle o extremelyF SpringVertical range,h WeightFor axle o extremelyG WeightHorizontal range；
The water of surrounding is involved in wherein by the air discharged from aerator；
The low temperature water body being involved in air rises to the water surface with gas, and air is dispersed into air；
The water rapidly horizontal proliferation of the water surface is risen to, in the formation lateral current flowing of the reservoir water surface；
Rise after the bottom water at low temperature spread the upper water higher with temperature is mixed and occur drastically to decline；
After drastically declining, the horizontal proliferation at the water layer of equal densities；
The larger water body of density is in sinking watching, and the warm water of the less surface part of ambient density is also involved in, from bottom volume
After the water mixing of different densities that are entering and being involved in from upper strata, sedimentation and horizontal proliferation downwards；
When aerator is long lasting for folding repeatedly, the water body upper portion in intermediate layer is set to increase, lower portion declines, finally,
Upper strata integrally turns into mixed layer；During the flow down of intermediate layer, mixed layer is integrally formed in lower floor；Mixed layer destroys various algae
Growth conditions, it is suppressed that the growth of algae.
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