CN212484569U

CN212484569U - Gathering device for blue algae bloom early warning in lake reservoir

Info

Publication number: CN212484569U
Application number: CN202021347110.2U
Authority: CN
Inventors: 马健荣; 马骁; 李哲; 曾海鳌; 黄远洋; 封雷; 曾思栋; 周博天; 闪锟
Original assignee: Chongqing Institute of Green and Intelligent Technology of CAS
Current assignee: Chongqing Institute of Green and Intelligent Technology of CAS
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2021-02-05
Anticipated expiration: 2030-07-10

Abstract

The utility model belongs to the technical field of the water is administered, specifically disclose an aggregation device of blue algae bloom early warning in lake reservoir, the aggregation device includes that the O type encloses to separate and a plurality of baffle has evenly been arranged to outer wall circumference, and the O type encloses to separate and the baffle homoenergetic floats on the surface of water. The gathering device is fixed in a water area, the O-shaped enclosure floats on the water surface, under the action of wind waves, blue algae can gather between the O-shaped enclosure and the baffle, at the moment, the water bloom phenomenon, the transparency, the algae density and the chlorophyll a concentration of the water body in the enclosure and between the baffles can be observed and measured, and then the probability and the intensity of the blue algae water bloom are pre-warned; meanwhile, the approximate direction of the blue algae source can be obtained according to the distribution of the density of the blue algae gathered between the baffles, so that the water area and the development condition of the blue algae bloom are predicted. After the observation condition of the gathering device is analyzed, early warning and prediction of different levels can be sent out.

Description

Gathering device for blue algae bloom early warning in lake reservoir

Technical Field

The utility model relates to a water administers technical field, especially relates to an aggregation device of blue algae bloom early warning in lake reservoir.

Background

The harmful algal bloom causes toxicity, makes the water body anaerobic and destroys normal food nets when the algal bloom is died and decomposed, thereby influencing the water ecological environment, directly endangering the drinking water safety and landscape of local residents, and causing huge economic loss and negative social influence.

The microcystis, anabaena and the like in the cyanophyta are common water bloom algae. The microcystis is the most common water bloom algae in eutrophic water bodies such as Taihu lake, Dian lake and nested lake. The algae bloom cannot be treated to form huge biomass, measures are taken after the algae bloom drifts and spreads in the whole lake, and the weakest link in the life process of the algae should be recovered in the overwintering dormancy or spring, namely before the algae are propagated in large quantities to form the bloom, the algae bloom is effectively controlled by taking targeted algae inhibiting measures after early warning, so that the treatment cost and the social and economic losses can be greatly reduced.

The traditional early warning method is to select representative water quality monitoring sections with obvious algae occurrence and change characteristics, continuously monitor the sections to obtain relevant technical indexes such as algae density, chlorophyll a concentration and the like, and then judge the sections. However, due to the large area of large water areas, large wind waves and the like, the blue algae are often distributed in a wide range and easily float with wind, and before a large amount of water bloom occurs, the blue algae are often dispersed on the water surface and are unevenly and unstably distributed. The representative water quality monitoring section is changed frequently, so that the measured data has large change, is not accurate enough and has higher cost. Therefore, in order to better observe the water bloom phenomenon of the lake reservoir, measure the algae density and chlorophyll a concentration data in the water area, predict and forecast the occurrence probability and intensity of the water bloom, and early warn the blue algae water bloom in advance, a blue algae water bloom gathering device is urgently needed.

SUMMERY OF THE UTILITY MODEL

In view of the above shortcoming of prior art, the utility model aims at providing an aggregation device of blue alga water bloom early warning in lake reservoir can gather the blue alga of dispersion everywhere on the surface of water to carry out the prediction to probability and intensity that the water bloom takes place, carry out the early warning to the blue alga water bloom in advance.

In order to realize the above-mentioned purpose and other relevant purposes, the utility model provides an aggregation device of blue alga water bloom early warning in lake reservoir, the aggregation device includes that the O type encloses the partition, the O type encloses the outer wall circumference that separates and has evenly arranged a plurality of baffle, the O type encloses to separate and the baffle homoenergetic floats on the surface of water.

Further, enclose and separate including isolator, heavy object and submarine mounting, the isolation can float in the surface of water, the isolator is the O type, the heavy object is located the isolator bottom for the balance that the regulation was enclosed and is separated, submarine mounting links to each other with the isolator through connecting the rope, is used for the fixed enclosure. The isolation body has buoyancy, so that the bottom is added with a heavy object, and a floating body is not needed to be added.

Further, the isolating body and the baffle are rubber floating bodies with inflatable and deflatable densities.

Further, the height of the separator and the baffle is 0.8-1.5 m; preferably, the height of the separator and the baffle is 1 m.

Furthermore, the draught of the isolating body and the baffle is 0.5-0.8m when the isolating body and the baffle float on the water surface. When the enclosure floats on the water surface, the draft part is used for intercepting algae in the water body, and the height higher than the water surface is used for preventing water flow from sloshing to enable the algae to cross the enclosure.

Further, the number of the baffle plates is four to more.

Further, the number of the baffles is preferably four or eight.

Further, the heavy object is a gabion and/or a lead block, the gabion comprises a net cage, the net cage is a multi-twisted hexagonal net woven by steel wires, and stones are filled in the net cage; the weight is a gabion or a lead block, the gabion and/or the lead block are connected with the isolating body through connecting ropes, the gabion comprises a net cage which is formed by weaving a plurality of stranded hexagonal nets by steel wires, and stones are filled in the net cage; the gabion and the lead block are connected with the isolating body through connecting ropes.

Further, the underwater fixing part is a fixing pile nailed into a riverbed, and the fixing pile, the heavy object and the isolating body are sequentially connected through a connecting rope. Specifically, the spud pile can adopt stake or iron nail, is equipped with an iron ring on the spud pile, and the rope of being connected on gabion or the lead is connected with the spud pile through the iron ring to avoid enclosing to separate and take place to remove.

Furthermore, the O-shaped enclosure is provided with an annular scale in the circumferential direction of the inner wall, and the baffle is provided with a scale in the length direction, so that the coverage range of floating water bloom in the O-shaped enclosure and between the baffles can be conveniently estimated.

Furthermore, monitoring equipment such as an online monitoring probe, a camera or online video equipment is arranged on the gathering device, so that remote observation can be realized.

As above, the utility model discloses a gathering device of blue algae bloom early warning in lake reservoir has following beneficial effect:

the gathering device is simple in structure and reasonable in design, when the blue algae bloom in the lake reservoir needs to be predicted and early warned, the gathering device is fixed in a water area, the O-shaped enclosure and the baffle float on the water surface, the blue algae can gather between the O-shaped enclosure and the baffle under the action of wind waves, the algae cannot easily cross the O-shaped enclosure and the baffle due to water flow agitation, the water bloom phenomenon, the transparency, the algae density and the chlorophyll a concentration of the water in the O-shaped enclosure and the baffle can be observed and measured at the moment, then the probability and the intensity of the blue algae bloom occurrence are predicted, and the blue algae bloom is early warned in advance; meanwhile, the approximate direction of the source of the blue algae can be obtained according to the distribution of the density of the blue algae gathered between the baffles, so that the water area where the blue algae bloom occurs is predicted.

The device can assist the blue algae bloom early warning work, and solve the problems that when the bloom outbreak is not serious, the blue algae on the water surface is not uniformly and stably dispersed, and representative monitoring water areas cannot be effectively selected.

Drawings

Fig. 1 is a schematic structural diagram of a gathering device according to an embodiment of the present invention.

FIG. 2 is a schematic view showing a state where the collecting apparatus (O-shaped enclosure) of the present invention is placed in a water area to collect blue algae.

FIG. 3 is a graph showing the force analysis of blue algae in the O-shaped enclosure edge of the gathering device.

FIG. 4 is a schematic view showing the state of the U-shaped enclosure of the present invention placed in a water area for collecting blue algae.

FIG. 5 shows the force analysis diagram of blue algae in the bottom of U-shaped enclosure.

FIG. 6 is a schematic diagram showing the analysis of the probability that the wind can blow out the blue algae out of the U-shaped enclosure.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

Description of reference numerals:

the water surface 1, the O-shaped enclosure 2, the baffle 3, the connecting rope 4, the weight 5, the fixing piece 6 and the riverbed 7.

The specific implementation process is as follows:

as shown in figure 1, the gathering device for the blue algae bloom early warning in the lake and reservoir comprises an O-shaped enclosure 2, and a plurality of baffles 3 are uniformly arranged on the outer wall of the O-shaped enclosure 2 in the circumferential direction. The number of the baffle plates 3 is four to eight, and eight baffle plates 3 are provided in the present embodiment.

O type encloses and separates 2 includes that the isolator, heavy object 5 and submarine mounting 6, and the isolation can float in the surface of water 1, and the isolator is the O type, and is specific, and isolator and baffle 3 are inflatable and the rubber body of gassing, and the inside cavity of rubber body can float in the surface of water, through aerifing and the size of the adjustable isolator of gassing, realizes the shrink to the gathering encloses blue alga or floater in separating. The weight 5 is positioned at the bottom of the isolated body and used for adjusting the balance of the O-shaped enclosure 2, and the weight 5 floats in water; the underwater fixing piece 6 is connected with the isolated body through a connecting rope 4 (such as a rope or a metal chain like an iron chain) and used for fixing the O-shaped enclosure 2. Specifically, a gabion can be used as the weight 5, high-quality low-carbon steel wires are woven into a net cage made of a multi-stranded hexagonal net, and stones are filled into the net cage to make the gabion; or directly adopting lead blocks as the weight 5; then one end of the connecting rope 4 (such as a metal chain like a rope or an iron chain) is connected with the gabion or the lead block, and the other end is connected with the isolated body. The underwater fixing piece 6 is a fixing pile nailed into the riverbed 7, the fixing pile can adopt a timber pile or iron nails, an iron ring is arranged on the fixing pile, and the connecting rope 4 (such as a rope or a metal chain like an iron chain) on the gabion or the lead block is connected with the fixing pile through the iron ring so as to prevent the O-shaped enclosure 2 from moving.

The height of the separator and the baffle 3 may be 0.8 to 1.5m, and in this embodiment, the height of the separator and the baffle 3 is 1 m. The draught is 0.5-0.8m when the isolated body and the baffle 3 float on the water surface 1. When the O-shaped enclosure 2 floats on the water surface 1, the draught part is used for intercepting algae in the water body, and the height higher than the water surface 1 is used for preventing water flow from sloshing to enable the algae to cross the O-shaped enclosure 2.

In addition, the circumferential direction of the inner wall of the O-shaped enclosure 2 is provided with an annular dividing ruler, and the length direction of the baffle 3 is provided with the dividing ruler, so that the coverage range of floating water bloom in the O-shaped enclosure 2 and between the baffles 3 can be conveniently estimated. Monitoring equipment such as an online monitoring probe, a camera or online video equipment is further arranged on the gathering device, and remote observation can be achieved.

The working principle of the O-shaped enclosure gathering cyanobacterial bloom is as follows:

as shown in fig. 2, in still water, the active motion state of particles in the water body is closely related to the kinetic parameters (density, shape and particle size) of the particles. Depending on the reynolds number of the particulate matter, the particulate matter settling can be divided into laminar, transitional, and turbulent states. At present, the suspension or sedimentation of blue algae particles in a laminar flow state is mainly considered in the research on the movement of blue algae particles (single cells or groups). Under the condition, the floating rate of the blue algae particles depends on kinetic parameters. Under the premise of known density, the floating velocity (ω cy) of the blue algae population can be calculated by using Stokes formula.

In the above formula, g is gravity acceleration, d_cyIs the particle diameter of blue algae group, is directly measured by a microscope and an image processing tool, rho_cyThe population density of blue algae is determined by a water analysis method, rho_wIs the density of the water body, v is the kinematic viscosity of the water,

the shape coefficient of the blue algae population (1 in the case of spheres).

The modified DGC method is used for determining the dynamic parameters of the visible blue-green algae population, which have important influence on the movement of the blue-green algae population. The particle size of the blue algae group has important influence on the active movement of the blue algae group. In natural water, the density of the blue algae population is usually between 990 and 995kg m^-3The particle size range is between 300-1400 μm. The field measurement shows that the floating rate of the blue algae colony increases along with the increase of the colony particle size, the floating rate of the blue algae colony between 100 and 425 mu m is 1475 times of a small colony or a single cell with the particle size of less than 20 mu m, and therefore the floating rate of the blue algae colony is determined by the particle size. When the wind wave in the water area becomes smaller, the blue algae group floats to the water surface under the control of huge effective buoyancy and is O-shapedThe enclosures gather. Once the blue-green algae enters the O-shaped enclosure and touches the boundary of the O-shaped enclosure, the stress is shown in figure 3, and the blue-green algae cannot escape from the O-shaped enclosure and can only move in the O-shaped enclosure due to the resultant force of the supporting force of the O-shaped enclosure, the wind power and the water flow power.

The baffle 3 at the periphery of the O-shaped enclosure 2 and the baffle 3 form a semi-open enclosure, the structure of the semi-open enclosure is similar to that of a U-shaped enclosure, and the working principle of the semi-open enclosure for collecting blue algae is also similar to that of the U-shaped enclosure.

The specific working principle is as follows:

the horizontal movement of algae is closely related to the water flow movement caused by wind. Wind can cause the water layer on the surface of the small lake to horizontally drift, and algae are driven to accumulate in the downwind area of the lake. In larger shallow lakes, where wind causes horizontal circulation of the lake water, the highest concentration of algae may occur in the center of the horizontal circulation. Different wind fields have great influence on the horizontal distribution of algae in lakes, and critical wind speeds are present, which range from 2 to 3m s^-1. The experiment simulation finds that the relation between the horizontal drift rate of the blue algae in lakes and reservoirs and the wind speed and the flow velocity is as follows: v_{Algae (Saccharum sinensis Roxb.)}＝0.036V_{Wind power}+0.481V_{Water (W)}+0.034(R²0.972). When the wind speed is lower than the critical wind speed, the water surface can be regarded as hydrodynamically smooth, no wave is generated, and the algae on the water surface rapidly drift to the windward bank along the wind direction and are collected by the U-shaped enclosure.

As shown in fig. 4, blue-green algae enters the U-shaped enclosure under the action of water flow or prevailing wind, and there are two situations after entering the U-shaped enclosure: in the first case, the blue algae still moves to the U-shaped enclosure boundary under the action of water flow or wind power, and the blue algae moves to the U-shaped enclosure boundary until reaching the boundary according to the Newton second law and the Newton third law. At this time, as shown in the force analysis chart of FIG. 5, the blue algae will be subjected to the force of water flow or wind and the supporting force of the U-shaped enclosure, and the force generated by the water flow or wind is F_{Water (W)}Is represented by the formula F_{Water (W)}Component F of_yActing force F on algae with U-shaped enclosure_NEqual in size and opposite in direction. And F_{Water (W)}Component F of_XIf the static friction force between the algae and the U-shaped enclosure is less than the static friction force between the algae and the U-shaped enclosure, the algae and the U-shaped enclosure are kept relatively static. F_XIf the static friction force is larger than the static friction force, the algae can move at the bottom of the U-shaped enclosure until the U-shaped enclosure is at a certain point F_XLess than the static friction between the algae and the U-shaped enclosure, the algae will be relatively static.

In the second case, the blue algae is blown out of the U-shaped enclosure by strong wind power. When the height of the U-shaped enclosure is infinitely small, the uncertainty can be ignored, and as shown in fig. 6, the central plane DEGF of the U-shaped enclosure is bisected from the central point of the circular arc at the bottom of the U-shaped enclosure. The width of the rectangle DEGF is the height of the U-shaped enclosure exposed out of the water surface, which is expressed by h, the length is the total length of the water surface of the U-shaped enclosure, which is expressed by a, the angle phi represents the angle range of wind capable of blowing out the U-shaped enclosure by the blue-green algae, and P is the probability that the wind can blow out the U-shaped enclosure by the blue-green algae

P＝arctan(a/h)/2π

The method for early warning the blue algae bloom in the lake reservoir by adopting the gathering device comprises the following steps:

when the water area is round, nearly round, square or nearly square, at least one gathering device is arranged at the center of the water area; when the water area is in a strip shape, three to five gathering devices are arranged according to the water flow direction; when the water area is dendritic, three to five gathering devices are arranged at the open position of the water area.

The method comprises the steps of gathering blue algae on the water surface through a gathering device, observing the water bloom phenomenon of a water body in the gathering device, measuring the transparency, the algae density and the chlorophyll a concentration, integrating data of the transparency, the algae density and the chlorophyll a concentration according to the water bloom phenomenon in the gathering device, and corresponding the data to corresponding early warning levels, so as to predict and forecast the occurrence probability, the occurring water area and the occurring intensity of the blue algae water bloom in the water area.

The wind influences the physical process of the blue algae collecting and transferring in the water body through the dynamic action on the water body. High wind speed (>4m/s) such thatBlue algae tend to be uniformly distributed, with low wind velocity: (<3m/s), the water surface can be regarded as hydrodynamic force smooth, and the blue algae floats to the surface layer and drifts along the wind direction. And the changed wind direction is not beneficial to the gathering of the blue algae, and the large-angle (about 17 degrees) wind direction change can reduce the area of the blue algae bloom. The experiment simulation finds that the relation between the horizontal drift rate of the blue algae in lakes and reservoirs and the wind speed and the flow velocity is as follows: v_{Algae (Saccharum sinensis Roxb.)}＝0.036V_{Wind power}+0.481V_{Water (W)}+0.034(R²0.972). The wind direction and the duration time in the lake are different in each season, the blue algae outbreak mainly occurs in summer, and the observation phenomenon in summer is selected as the standard of the early warning area of the gathering device. The experiment of the gathering device of Taihu lake shows that the early warning coverage radius (r) is 1Km, and the early warning area (S) ═ pi r². Therefore, the early warning area of a single gathering device is considered to be about 3.14Km². In order to improve the precision, the number of the gathering devices can be increased or decreased according to actual areas of lakes and reservoirs.

The method carries out early warning according to the following modes:

1. the method for carrying out early warning water bloom grading according to the water bloom phenomenon observed in the enclosure specifically comprises the following steps: when the water body in the enclosure is clear, has higher transparency and does not have obvious algae particle aggregation, the early warning is not needed; when a large amount of algae particles are gathered and increased in the enclosure, and blue algae floating zones can be observed in a concealed manner, early warning is needed; when the blue algae is observed to be covered on the water surface in a thick paint shape in the enclosure, the serious bloom early warning level is reached. After the early warning treatment, the water area needs to be treated in a targeted way, so that the occurrence of cyanobacterial bloom is avoided.

2. The transparency is used as an auxiliary parameter for predicting and early warning. When the transparency of the water body in the enclosure is more than 50cm, the early warning critical value is not reached, and early warning is not needed; when the transparency of the water body in the enclosure is 20-50cm, performing conventional early warning; and when the transparency of the water body in the enclosure is less than 20cm, carrying out serious bloom early warning. The water transparency can be measured by methods such as Water and wastewater monitoring and analysis (fourth edition), and environmental science publishers of China.

3. The density of the algae is used as an auxiliary parameter for predicting and early warning. When the density of algae in the water body in the enclosure<When 1500 ten thousand/L are obtained, the early warning critical value is not reached, and early warning is not needed; when the density of algae in the water body in the enclosure is 1500-; when the density of algae in the water body in the enclosure is more than or equal to 10000 ten thousand per liter, the serious algal bloom early warning grade is achieved. The method for measuring the algal density can refer to methods for monitoring and analyzing water and wastewater (fourth edition), published by environmental science of China. 4. The chlorophyll a concentration is used as an auxiliary parameter for predicting and early warning. When the concentration of chlorophyll a in the water body in the enclosure is 0-10mg/m³When the time reaches the early warning critical value, early warning is not needed; when the concentration of chlorophyll a in the water body in the enclosure is 10-20mg/m³Carrying out conventional early warning; when the concentration of chlorophyll a in the water body in the enclosure>20mg/m³And (5) carrying out early warning of serious water bloom. The chlorophyll a concentration is filtered by a 0.45 mu m acetate fiber filter membrane and then is extracted and measured by an acetone method. (Water and wastewater monitoring and analysis method, China environmental science publishers)

According to the distribution of the density of the blue algae gathered among the eight baffles, the approximate direction of the blue algae source is obtained, and therefore the water area where the blue algae bloom occurs is predicted.

Application example

Taking the data of Gaoyang Pinghu lake in Yunyang county, Chongqing city as an example, the method and the gathering device provided by the invention are adopted to carry out blue algae bloom early warning.

In

year

2019, 4 and 2, the water area is approximately square in the Chongqing research institute experimental platform of the scientific institute in the Chongyang high-yang lake of Chongqing in the three gorges reservoir area, so that the gathering device is placed in the center of the water area.

Observing the water surface without abnormal sample on the same day and 3 days, no obvious algae aggregation on the water surface, sampling and measuring in an aggregation device, wherein in the water sample parameters of the aggregation device, the transparency is 55-70cm and is more than 50cm, the algae cell density is 800-1000 ten thousand/L and is less than 1500-ten thousand/L, the chlorophyll a concentration is 5-7mg/m³At 0-10mg/m³Within the range, the water sample of the gathering device does not reach the early warning critical value, and early warning is not needed.

4 months, 4 morning, 9: 00 obvious algae accumulation is observed in the accumulation device in the southeast direction, but the accumulation device does not cover the algae and reaches the early warning critical value (Then, the transparency of the water sample is 40cm, and the chlorophyll a concentration is 12.5mg/m³The cell density of the algae is 2100 ten thousand/L, the cell densities of chlorophyll a and the algae in other gathering devices are lower than the early warning critical value), conventional early warning can be carried out, the source of the algae can be inferred to be the southeast direction, and the floating strip of the algal bloom can be obviously observed in the southeast direction by naked eyes. After the ship is taken for sampling and checking, the water in the water area in the direction has the water bloom length of about 400 meters and the water bloom width of about 3-30 meters, and the water has the tendency of migrating towards the direction of the gathering device arranged in the southeast direction (the speed is 0.11 m/s). It was calculated that the area where the gathering device was located would be covered by the bloom within 1 hour.

9 in the morning: 30, obvious bloom appears on the gathering devices facing to the bloom direction (the transparency of the water sample is less than 20cm when the gathering devices are used in the later determination, and the concentration of chlorophyll a is more than 20mg/m³When the cell density of algae is more than 10000 ten thousand per liter and exceeds the early warning critical value), the gathering device facing south east is close to coverage (the transparency of the water sample is 10cm when the later determination is carried out, and the concentration of chlorophyll a is 30mg/m³The density of algae cells is 12000 ten thousand/L), the gathering device on the reverse side of the bloom direction and the gathering device positioned in the center have no obvious algal bloom temporarily (the transparency of the water sample is 20-50cm when the time is later determined, and the chlorophyll a concentration is 10-20mg/m³The cell density of the algae is 1500-.

At 10:00 a.m., all the gathering devices have obvious bloom, and the gathering devices facing the bloom direction are covered by algae, which indicates that the bloom is serious and a serious bloom warning should be carried out. The aggregation device did not change significantly within the next 2 days because there was no manual intervention.

4, 7 days in the afternoon at 14:20, the rainfall is about 2 hours (the rainfall is 26ml) in the heavy rain, the water bloom in the rain gradually disappears to be unobvious, 15: 00 viewing device, the algae aggregation is not obvious (when the later determination is carried out, the transparency of the water sample is 60-70cm and is more than 50cm, the cell density of the algae is 800-³At 0-10mg/m³Within the range, the water samples of 9 gathering devices do not reach the early warning critical value, and early warning is not needed). 16: 00, centrally located aggregate packageObvious algae aggregation appears at the beginning of the placement (when the post-determination is carried out, the transparency of a water sample is 15cm, the concentration of chlorophyll a is 25mg/m³Algae cell density of 11000 ten thousand/L), other enclosures were present, but the algae load was much smaller than the centrally located concentrating device. The early warning can be given to the fact that the bloom algae at the moment begins to float and gather. 17: 00, observed an increase in algae in the 9 aggregators, but not covered by algae, a general warning can be given.

In conclusion, the device has simple structure and reasonable design, can assist the blue algae bloom early warning work, and solves the problems that when the bloom outbreak is not serious, the blue algae on the water surface is not uniformly and stably dispersed, and the representative monitoring water area can not be effectively selected.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. The utility model provides a gathering device of blue algae water bloom early warning in lake reservoir, its characterized in that, gathering device encloses the partition including the O type, the outer wall circumference that the O type enclosed the partition has evenly arranged a plurality of baffle, O type encloses partition and baffle homoenergetic and floats on the surface of water.

2. The gathering device as recited in claim 1 wherein: enclose and separate including insulator, heavy object and submarine mounting, the insulator can float in the surface of water, the insulator is the O type, the heavy object is located the insulator bottom for the balance that the regulation was enclosed and is separated, submarine mounting passes through rope or metal chain and links to each other with the insulator, is used for the fixed enclosure.

3. The gathering device as recited in claim 2 wherein: the isolation body and the baffle are both inflatable and deflatable rubber floating bodies.

4. The gathering device as recited in claim 2 wherein: the height of the separator and the baffle is 0.8-1.5 m.

5. The gathering device as recited in claim 2 wherein: the draught is 0.5-0.8m when the isolating body and the baffle float on the water surface.

6. The gathering device as recited in claim 1 wherein: the number of the baffle plates is four to more.

7. The gathering device as recited in claim 6 wherein: the number of the baffles is four or eight.

8. The gathering device as recited in claim 2 wherein: the weight is a gabion and/or a lead block, the gabion comprises a net cage, the net cage is a multi-twisted hexagonal net woven by steel wires, and stones are filled in the net cage; the gabion and/or the lead block are/is connected with the isolation body through a connecting rope.

9. The gathering device as recited in claim 2 wherein: the underwater fixing piece is a fixing pile nailed into a riverbed, and the fixing pile, the heavy object and the isolating body are sequentially connected through a connecting rope.

10. The gathering device as recited in claim 1 wherein: an annular graduated scale is arranged in the circumferential direction of the inner wall of the O-shaped enclosure, and a graduated scale is arranged in the length direction of the baffle;

and/or monitoring equipment is mounted on the gathering device.