CN103787433A - Method for inhibiting blue algae from growing through water body disturbance - Google Patents
Method for inhibiting blue algae from growing through water body disturbance Download PDFInfo
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- CN103787433A CN103787433A CN201410047353.7A CN201410047353A CN103787433A CN 103787433 A CN103787433 A CN 103787433A CN 201410047353 A CN201410047353 A CN 201410047353A CN 103787433 A CN103787433 A CN 103787433A
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Abstract
The invention discloses a method for inhibiting blue algae from growing through water body disturbance. A water body disturbance device is arranged in a water area demanding alga control; the device is capable of lifting the water body at the lower layer to generate longitudinal high-speed water flow and surface radial layer flow for damaging the original growth environment of blue algae and inhibiting the capability of the blue algae in finding an optimal growth environment; the blue algae can be also carried to the dark bottom layer of the water body because of the longitudinal water flow, so that light and CO2 acquired by the blue algae are reduced; at the same time the blue algae constantly experience the temperature difference from the surface layer to the bottom layer of the water body, so that the growth and propagation of the blue algae are inhibited, the risk of cyanobacterial bloom bursting is reduced, and the function of protecting the quality of a water source is achieved.
Description
The application is the divisional application of following application: the applying date: on October 18th, 2012; Application number: 201210396649.0; Denomination of invention: " a kind of method of utilizing water disturbance to suppress blue algae growth ".
Technical field
The present invention relates to suppress the method for blue algae growth, particularly a kind of method of utilizing water disturbance to suppress blue algae growth.
Background technology
In recent years, the situation of the body eutrophication of China is more and more serious, causes blue-green algae to be broken out in a large number, and water body is contaminated, and water quality deterioration has had a strong impact on economical and social development.Particularly at the blue algae bloom on some drinking water sources ground, due to a large amount of releases of algae toxin, the safety that is directly threatening urban drinking water.
The method of current inhibition blue algae bloom is mainly to kill algae and algal control by the method for various chemical physics biologies, because chemical and biological method exist uncontrollable secondary pollution and ecological risk, and physical method does not exist the problems referred to above, be considered to the safest, the method for environmental protection.
Physical method mainly comprises the technology such as artificial or mechanical salvaging, flocculation, shading, ultrasonic and aeration, existing technologies somewhat expensive, and energy consumption is huge, is unfavorable for large-scale application and promotes.
Summary of the invention
For the problems referred to above, the object of this invention is to provide a kind of physics algal control method of low cost less energy-consumption.The method can be permanently effective the growth of inhibition bloom blue algae, prevent the generation of wawter bloom, play the effect at protection water source.
For achieving the above object, the present invention takes following technical scheme:
Utilize water disturbance to suppress a method for blue algae growth, comprise and utilize water disturbance device, the water body of lower floor is promoted to upper strata, produce thus longitudinal water disturbance, and form radial laminar flow in water surface, thereby suppress algal grown.
Described method comprises longitudinal disturbance and horizontal disturbance, longitudinal disturbance: in the circular water body central position of diameter 400m, utilize water disturbance device, in its thrust-augmenting nozzle, manufacture the direct longitudinal stream that a flow is 11000L/min, around thrust-augmenting nozzle, form the induction longitudinal stream that a flow is 26000L/min, the flow velocity of longitudinal stream is about 0.35m/s simultaneously; Horizontal disturbance: longitudinal stream takes the water of water bottom to water body top layer, water around spreads out to surrounding from water disturbance device, thereby forms a radial laminar surface flow on water body top layer.The water on top layer is water-bed because the effect of gravity finally flows to again, so just in the water body of certain limit, has formed the annular flow of an above-below direction, makes the constantly upper and lower disturbance of water body.
Through experiment showed, that the longitudinal stream of 0.35m/s is the minimum current that can destroy blue-green algae self buoyancy adjustment mechanism.The disturbance up and down of water body has destroyed the habitat of blue-green algae, can suppress the growth of blue-green algae.The laminar flow on surface has increased oxygen level in water body simultaneously, has particularly increased bottom oxygen content in water, makes bed mud in good oxygen condition, reduces the release of nutritive salt in bed mud, thereby suppresses the growth of blue-green algae.
The present invention is owing to taking above technical scheme, and it has the following advantages:
The advantages such as 1, water disturbance control algae technology is a kind of environmental friendliness technology, has simple to operately, controls easily, does not introduce other chemical substances in treating processes, and treatment condition gentleness and treatment effect are lasting.
2, regulate buoyancy because blue-green algae mainly relies on the pseudo-ghost of self, in water body, find best habitat.And the disturbance of the disturbance of water body, particularly above-below direction can suppress this ability of blue-green algae, destroys its best habitat, thereby suppresses its growth and breeding.Lasting disturbance, can also construct a stable ecosystem that is different from impounded body, thereby it is more obvious to make to control algae effect.
3, the disturbance up and down of water body is taken the blue-green algae under the water surface to water surface, make it be subject to strong illumination and be subject to light suppress injury, thereby suppress its growth.
4, the disturbance up and down of water body is taken the blue-green algae on top layer to bottom, makes it lose illumination and suppresses its photosynthesis, thereby having suppressed the growth and breeding of blue-green algae.
5, the disturbance up and down of water body is taken the blue-green algae on top layer to bottom, makes it can not absorb airborne CO2 and suppresses its photosynthesis, thereby having suppressed the growth and breeding of blue-green algae.
6, due to the temperature difference of upper strata water body and lower floor's water body, the disturbance up and down of water body makes blue-green algae constantly experience at short notice the variation of temperature, thereby suppresses its growth.
7, the increase of bottom water body oxygen level, reduced nutritive salt in bed mud and discharge, thereby suppress the growth of blue-green algae, reduce the risk of blue-green alga bloom outburst.
Accompanying drawing explanation
Fig. 1 is water disturbance schematic diagram.
Embodiment
Be described in detail of the present invention below in conjunction with drawings and Examples.
In following examples, use U.S. SolarBee, Inc. the SB10000v18 water disturbance device of company carries out water disturbance, the disturbance of water body comprises longitudinal disturbance and laterally disturbance, longitudinally disturbance, as shown in Figure 1: utilize motor b drives impeller a, under motor b, settle thrust-augmenting nozzle c, thrust-augmenting nozzle stretches to the bottom from top to bottom, motor rotation Shi Shi lower floor water body flows from bottom to top along thrust-augmenting nozzle, form direct longitudinal stream, induce longitudinal stream peripheral can the formation of conduit simultaneously, thereby in the circular water body central position of diameter 400m, in the thrust-augmenting nozzle of water disturbance device, manufacture the direct longitudinal stream 1 that a flow is 11000L/min, around thrust-augmenting nozzle, form the induction longitudinal stream 2 that a flow is 26000L/min, the flow velocity of longitudinal stream is about 0.35m/s.Laterally disturbance: longitudinal stream (comprising direct longitudinal stream and induction longitudinal stream) takes the water of water bottom to water body top layer, and water around spreads out to surrounding from water disturbance device, thereby forms a radial laminar surface flow 3 on water body top layer.The water on top layer is water-bed because the effect of gravity finally flows to again, so just in the water body of certain limit, has formed the annular water flow of an above-below direction.With specific examples, the present invention will be described below:
Embodiment 1:
This experiment is carried out in the weather incubator in laboratory, representative using microcystic aeruginosa as blue-green algae, nutrient solution is BG-11 nutrient solution, original volume is 200ml, initial chlorophyll concentration is about 10 μ g/L, in the triangular flask of 500ml, cultivates, and is divided into experimental group and control group, the condition of experimental group is: when Light To Dark Ratio 1:11, illumination, temperature is 30 ℃, temperature is 20 ℃ when dark, the disturbance situation of simulation water body; The condition of control group is: when Light To Dark Ratio 1:1, illumination, temperature is that 30 ℃, dark are that temperature is 25 ℃, simulation undisturbed situation.Within every 2 days, sample once 14 days experimental periods.Result as shown in table 1:
Table 1: chlorophyll concentration over time
| Incubation time (d) | 0 | 2 | 4 | 6 | 8 | 10 | 12 | 14 |
| Control group chlorophyll concentration (μ g/L) | 10 | 48 | 124 | 253 | 425 | 585 | 686 | 976 |
| Experimental group chlorophyll concentration (μ g/L) | 10 | 15 | 18 | 26 | 31 | 39 | 47 | 52 |
As known from Table 1, experimental group (simulated disturbance situation) is with respect to control group (undisturbed situation), the growth of chlorophyllous concentration very slowly, strong inhibition has been received in the growth of the microcystic aeruginosa of illustrative experiment group (simulated disturbance situation), and inhibiting rate is along with the enhancing that is increased in of time, can reach 94.63% to final from initial 68.45%, inhibition suitable obviously.
Embodiment 2:
In this experiment Mou city large reservoir, carry out, water disturbance device is positioned over the slow region of these Reservoir Tail current, centered by this device, at 4 sampling spots of water surface arranged transversely, decentering position 0m, 50m, 200m, 400m respectively, is separately establishing a control point at a distance apart from this device 2km.Sample one to twice every month, measure the Cells of Blue-green Algae number in water sample.The average data of monitoring in continuous 4 months is as shown in table 2:
Table 2: the frustule number of each sampling spot
| Sampling spot position | 0m point | 50m point | 200m point | 400m point | 2000m point |
| Algae number (individual/mL) | 4455 | 4468 | 4822 | 4944 | 8020 |
As known from Table 2, outside by center, frustule number increases gradually, and compared with control point, maximal percentage inhibition reaches 44%.Because great water body exists water body exchange, so inhibition is much lower with respect to laboratory, but effect still suitable obviously.
Claims (7)
1. utilize water disturbance to suppress a method for blue algae growth, it is characterized in that:
Utilize water disturbance device, the water of water body lower floor is entered from the lower end of thrust-augmenting nozzle, form direct longitudinal stream in described thrust-augmenting nozzle, and longitudinal stream is induced in formation around described thrust-augmenting nozzle, described direct longitudinal stream and described induction longitudinal stream form longitudinal disturbance; Described longitudinal disturbance forms radial laminar flow in described water surface, forms horizontal disturbance; Described radial laminar flow flows to water-bed, forms annular water flow, takes the blue-green algae of water surface to water body lower floor.
2. the method for utilizing water disturbance to suppress blue algae growth according to claim 1, it is characterized in that, by regulating the flow of described direct longitudinal stream to reach effective longitudinal stream flow velocity, described effective longitudinal stream flow velocity is the flow velocity that can destroy blue-green algae self buoyancy adjustment mechanism.
3. the method for utilizing water disturbance to suppress blue algae growth according to claim 2, is characterized in that, described effective longitudinal stream flow velocity minimum is 0.35m/s.
4. the method for utilizing water disturbance to suppress blue algae growth according to claim 2, is characterized in that, the flow of described direct longitudinal stream is 11000L/min, and the flow of described induction longitudinal stream is 26000L/min.
5. the method for utilizing water disturbance to suppress blue algae growth according to claim 2, is characterized in that, described water body is the circular water body of diameter 400m.
6. the method for utilizing water disturbance to suppress blue algae growth according to claim 1, is characterized in that, utilize the motor of water disturbance device under opened condition, drives impeller makes lower floor's water body be promoted to upper strata by described thrust-augmenting nozzle.
7. a water disturbance device, comprising:
Thrust-augmenting nozzle, described thrust-augmenting nozzle both ends open, tube wall is without sub-inlet; The upper end mounted motor of described thrust-augmenting nozzle and motor drives impeller.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106277384A (en) * | 2016-08-30 | 2017-01-04 | 中国科学院地球化学研究所 | Eutrophication Deep lake Water quality restoration system and Water quality restoration method |
| CN107628689A (en) * | 2017-09-30 | 2018-01-26 | 姚竣耀 | A kind of administering method of blue-green algae |
| CN109336316A (en) * | 2018-12-14 | 2019-02-15 | 湖北工业大学 | A kind of method of quick control cyanobacteria |
| CN110467245A (en) * | 2018-05-11 | 2019-11-19 | 中冶南方工程技术有限公司 | A kind of shallow lake solar energy different makings aeration control algae device round the clock |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106277384A (en) * | 2016-08-30 | 2017-01-04 | 中国科学院地球化学研究所 | Eutrophication Deep lake Water quality restoration system and Water quality restoration method |
| CN107628689A (en) * | 2017-09-30 | 2018-01-26 | 姚竣耀 | A kind of administering method of blue-green algae |
| CN107628689B (en) * | 2017-09-30 | 2020-12-22 | 姚竣耀 | Blue algae treatment method |
| CN110467245A (en) * | 2018-05-11 | 2019-11-19 | 中冶南方工程技术有限公司 | A kind of shallow lake solar energy different makings aeration control algae device round the clock |
| CN109336316A (en) * | 2018-12-14 | 2019-02-15 | 湖北工业大学 | A kind of method of quick control cyanobacteria |
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