An algae collecting device for automatically collecting water blooms without power consumption

Abstract

The present invention provides an algae collecting device for automatically collecting water blooms without power consumption, comprising a polygonal well body, the bottom of which is fixed to the bottom of the water, the middle of which is located in the water, and the top of which is located above the water surface; the polygonal well body is an enclosed polygonal well body formed by sequentially splicing a plurality of main walls of the same or different shapes; a plurality of water inlets are provided on the plurality of main walls, and the plurality of water inlets include a water inlet and a water outlet, the water inlet is located at the upper part of the main wall, the water outlet is located below the water inlet, and an inner one-way plate for blocking the water inlet is rotatably connected to the inner side wall of the water inlet through a limiting device. The algae collecting device for automatically collecting water blooms without power consumption of the present invention concentrates the water blooms on the lake surface within a fixed range, facilitates the collection and transfer of phytoplankton, reduces the negative impact of the water bloom environment, and the collection process does not require energy supply, thereby realizing the automatic concentration of the water blooms.

Description

Technical Field

[0001] The invention belongs to the field of lake environmental protection, and in particular relates to an algae collecting device for automatically collecting water blooms without power consumption. Background Art

[0002] Lake bloom control is currently a key point in lake pollution control. Lake blooms are harmful to society in many ways: in terms of ecological balance, the proliferation of lake blooms in eutrophic water bodies will lead to the extinction of submerged plants, which have the function of purifying water quality. The containment of submerged plants by lake blooms will further aggravate the deterioration of lake water quality, thereby reducing lake biodiversity and destroying the stability of the ecosystem; in terms of lake landscape, lake blooms cover the water surface and have a foul smell, which not only affects the tourism industry around the lake, but also causes physiological harm to residents living near the lake bloom area; in terms of social life and production, severe lake blooms will pollute industrial and domestic water and even drinking water, causing a serious urban water crisis and affecting the lives and economic development of residents in areas surrounding the lake.

[0003] Algal blooms often occur in eutrophic lakes in cities, and urban lakes are often a city's unique landscape or even spiritual symbol. Improving the lake environment and eliminating lake algal blooms are the main goals of many water environment management projects and an important step in winning the ecological battle. It is very important to implement an algal bloom elimination technology that is environmentally friendly, easy to implement, and has excellent economic and ecological benefits for lake environmental management.

[0004] Currently, the more mature algae removal and control technologies are mainly divided into four categories: physical and chemical methods, mechanical algae removal technology, biological algae removal technology and chemical algae removal technology.

[0005] The physical and chemical method of algae removal using chitosan modifier was developed by Pan Gang, a researcher at the Eco-Environmental Research Center of the Chinese Academy of Sciences, through the study of clay flocculation mechanism. The core of clay algae removal is to use the principle of flocculation to condense the algae blooms floating on the water surface, so that the algae and clay sink to the bottom of the water together, thereby achieving the purpose of removing the algae blooms. This method is applicable to a wide range of water bodies and does not cause secondary pollution to the environment. However, flocculating the algae blooms on the water surface requires spraying the modified clay on the water surface, which is inconvenient to achieve when applied over a large area, and the effect is weakened under special environmental conditions such as strong winds and waves.

[0006] Mechanical algae removal technology first appeared in developed countries such as the United States and Japan. The process used is to directly use the algae absorber on the water surface to absorb the algae, and then use the vacuum filtration concentrator or flocculation flotation concentration to vacuum dehydrate the algae slurry or directly transport it to the factory for processing to achieve the purpose of resource utilization. At present, this technology is the most widely used, and the technology of collecting algae on the water surface is constantly improving, but in essence, it is to use ships to collect algae blooms on the water surface near the hull.

[0007] This method is simple to operate and can be used by ordinary fishermen. It has a wide range of applications and can beautify the landscape in a short period of time. However, for waters seriously polluted by algal blooms, long-term and large-scale continuous salvage of algal blooms is required to improve the environment, which consumes huge manpower and material resources.

[0008] The principle of biological algae removal technology is to use fish, shellfish, etc. to prey on algae to reduce the algae biomass in the water. The classic biological manipulation technology is to use fish to control zooplankton, and use zooplankton to control zooplankton, so as to reduce chlorophyll concentration and improve transparency.

[0009] Once this type of technology is successfully implemented, it will not only achieve the purpose of algae removal, but also be environmentally friendly and do not require much human intervention, which is ideal. However, for eutrophic lakes, zooplankton cannot be controlled artificially, fish and shellfish have limited predation on algae, and the growth of these organisms themselves is also restricted by algal blooms, so the algae removal efficiency is low.

[0010] Chemical algae removal mainly uses copper sulfate to kill algae. 2+ It has the effect of inhibiting algae photosynthesis, absorbing phosphorus and fixing nitrogen to achieve the effect of algae removal. This method is more effective for cyanobacteria, especially cyanobacteria that can fix nitrogen, and has a better effect on Anabaena blooms. A small amount of Cu 2+ The activity of algae can be inhibited.

[0011] This chemical algaecide method is not currently recommended because it is also toxic to aquatic plants and may be toxic to many other organisms, posing a greater secondary environmental hazard. Summary of the invention

[0012] In order to solve the above problems, the present invention discloses an algae collecting device for automatically collecting water blooms without power consumption, which concentrates the water blooms on the lake surface within a fixed range, facilitates the collection and transfer of phytoplankton, reduces the negative impact of water blooms on the environment, and the collection process does not require energy supply, thereby achieving automatic concentration of water blooms.

[0013] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: a non-power-consuming algae collecting device for automatically collecting water blooms, comprising a polygonal well body, the bottom of which is fixed to the bottom of the water, the middle is located in the water, and the top is located above the water surface; the polygonal well body is an enclosed polygonal well body formed by sequentially splicing together a plurality of main walls of the same or different shapes; a plurality of main walls are each provided with a plurality of water outlets, the plurality of water outlets comprising a water inlet and a water outlet, the water inlet being located at the upper part of the main wall, the water outlet being located below the water inlet, and an inner one-way plate for blocking the water inlet being rotatably connected to the inner side wall at the water inlet through a limiting device.

[0014] Furthermore, the lower part of the main wall includes a solid fixing part, the solid fixing part is fixed on the bottom of the water, and the water outlet is located above the solid fixing part.

[0015] Furthermore, an outer one-way plate for blocking the water outlet is rotatably connected to the outer side wall at the water outlet via a limiting device.

[0016] Furthermore, the water outlets are distributed in a matrix.

[0017] Furthermore, the distance between two adjacent water outlets is 0.05m-0.1m.

[0018] Furthermore, the water outlet is a square with a side length of 0.3m-0.5m, and the area of ​​the inner one-way plate and the outer one-way plate is larger than the area of ​​the water outlet.

[0019] Furthermore, the inner one-way plate and the outer one-way plate are rotatably connected via a metal shaft fixed on the main wall.

[0020] Furthermore, the metal shaft is located at the top of the water outlet of the main wall.

[0021] Furthermore, when water flows through the water outlet, the maximum angle between the inner one-way plate and the outer one-way plate and the main wall is 90°.

[0022] Furthermore, the main wall is made of reinforced concrete, with a width of 2m-4m and a thickness of 0.1m-0.4m. Other suitable materials and sizes are also acceptable, such as using steel plates and reducing the thickness, so that the device is easy to disassemble and assemble as a whole, and can be deployed only in the required time period.

[0023] When using the algae collecting device for automatically collecting algae blooms without power consumption of the present invention, if the water flow direction of the water area is fixed, the direction of the main wall and the combination of the walls can be appropriately adjusted to maximize the environmental and economic benefits; if the algae collecting device is built near a waterway, it is also necessary to set up warning signs, night lights and other indicators around it to warn surrounding ships to stay away.

[0024] The material and surface shape of the main wall of the algae collecting device for automatically collecting algae blooms without power consumption of the present invention can be adjusted according to the specific water area for placement, so as to reduce the scouring and damaging effect of water flow on the wall, reduce maintenance costs, and extend the service life of the device; the size of the main wall, the shape of the openings on the main wall, the size of the openings, the number of openings, and the distribution of the two types of one-way plates on the main wall can be appropriately adjusted in combination with the hydrological and meteorological conditions of the placement water area and the degree of algae bloom to adapt to the specific conditions of the placement site; the outer one-way plate and the inner one-way plate should be provided with appropriate limiters according to the hydrological conditions and the degree of algae bloom of the placement site, so that the lifting angle and strength of the one-way plate are appropriate, and the one-way passage of water flow and algae bloom near the water surface can be guaranteed as much as possible.

[0025] Compared with the prior art, the advantages of the present invention are: a wide range of applications, the shape and size of the algae collecting device of the present invention can be adjusted according to the conditions of the lake, and can be built and used in lakes of different sizes, depths, different hydrological and meteorological conditions, and algal bloom degrees; it is environmentally friendly, the walls of the algae collecting device generally use environmentally friendly reinforced concrete materials, and no additional chemical substances are input, and it will not have any negative impact on the water quality; the water outlet of appropriate size allows other aquatic organisms to pass through, and will not interfere with the normal activities of aquatic animals such as fish and shellfish in the lake; there is no power consumption, the present invention achieves the purpose of algae collection entirely by relying on the natural flow process of the water body, does not require any power consumption, does not generate additional noise, light, and chemical pollution due to internal friction of motors, etc., and has extremely low maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the structure of the algae collecting device for automatically collecting water blooms without power consumption according to an embodiment of the present invention;

[0027] Figure 2 is a side view of the main wall according to an embodiment of the present invention;

[0028] Figure 3 Schematic diagram of the connection structure between the water inlet and the inner one-way plate according to an embodiment of the present invention;

[0029] Figure 4 It is a schematic diagram of the connection structure between the water outlet and the outer one-way plate according to an embodiment of the present invention.

[0030] Among them, 1-regular hexagonal well body, 11-main wall, 12-water outlet, 13-inner one-way plate, 14-outer one-way plate, 121-water inlet, 122-water outlet. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0032] like Figure 1-3As shown, a device for collecting algae blooms automatically without power consumption comprises a regular hexagonal well body 1, wherein the bottom of the regular hexagonal well body 1 is fixed to the bottom of the water, the middle is located in the water, and the top is located above the water surface; the regular hexagonal well body 1 is an enclosed regular hexagonal well body formed by sequentially splicing six main walls 11, the lower part of the main wall 11 comprises a solid fixing part, the solid fixing part is fixed to the bottom of the water, and the main wall 11 is made of reinforced concrete; a plurality of water outlets 12 are arranged on each of the six main walls 11, the water outlets are distributed in a matrix, the spacing between two adjacent water outlets is 0.1 m, the water outlets are square, the inner one-way plate 13 and the outer one-way plate 14 are arranged on the inner one-way plate 15, and the inner one-way plate 16 is arranged on the outer one-way plate 17; the inner one-way plate 17 is arranged on the inner one-way plate 18, and the inner one-way plate 19 is arranged on the outer one-way plate 19; the inner one-way plate 11 is arranged on the inner one-way plate 11; the inner one-way plate 11 is arranged on the outer one-way plate 11; the inner one-way plate 13 is arranged on the inner one-way plate 15, and the inner one-way plate 13 is arranged on the outer one-way plate 18; the inner one-way plate 13 is arranged on the inner one-way plate 18 ... inner one-way plate 18; the inner one-way plate 13 is arranged on the inner one-way plate 18; the inner one-way plate 1 The area of ​​the plate 14 is larger than the area of ​​the water outlet 12; the multiple water outlets 12 include a water inlet 121 and a water outlet 122, the water inlet 121 is located at the upper part of the main wall 11, and the water outlet 122 is located below the water inlet 121 and above the physical fixed part; an inner one-way plate 13 for blocking the water inlet is rotatably connected to the inner wall at the water inlet 121, and an outer one-way plate 14 for blocking the water outlet is rotatably connected to the outer wall at the water outlet 122, the inner one-way plate 12 and the outer one-way plate 13 are rotatably connected by a metal shaft fixed on the main wall 11, and the metal shaft is located inside the main wall 11.

[0033] In some embodiments, the spacing between two adjacent water outlets is 0.05m-0.1m, and the side length of the water outlet is 0.3m-0.5m; when water flows through the water outlet, the maximum angle between the inner one-way plate 13 and the outer one-way plate 14 and the main wall 11 is 90°.

[0034] In some embodiments, the width of the main wall made of reinforced concrete is 2m-4m, and the thickness is 0.1m-0.4m.

[0035] The application method of the algae collecting device for automatically collecting algae blooms without power consumption comprises the following steps: (1) investigating the lake where the algae collecting device of the present invention needs to be installed, and determining the area for constructing the algae collecting device; the lake is generally severely eutrophic with severe water. Taihu Lake has been severely eutrophic for a long time, and blue algae blooms break out every year, with the most serious situation in the north of Taihu Lake. After further field investigation, we chose to construct the algae collecting device of the present invention in the "center of the lake" to the north of the center of Taihu Lake. The "center of the lake" of Taihu Lake has more severe algae blooms in summer and autumn, and is far away from the shore, with few ships passing through, which is suitable for the construction of the algae collecting device.

[0036] (2) Determine the specific shape and size of the algae collection device and build the algae collection device in the selected area; the user needs to determine the overall shape and size of the algae collection device and the size of the water inlet based on factors such as the degree of algae bloom, hydrological conditions, and meteorological conditions in the construction area. The shallower the water, the greater the wind and waves, and the smaller the size of the algae collection device should be; the more serious the algae bloom, the larger the size of the water inlet should be. In the "center of the lake", the direction of the water flow cannot be determined as it changes with the direction of the wind, so this example will enclose the algae collection device in a hexagon to adapt to water flows in all directions. The wind speed of the entire Taihu Lake generally does not exceed 5m / s, the water depth is about 3m, and the mud at the bottom of the lake center is relatively hard, so in this example, the single wall of the algae collection device is buried 2m under the water to fix the entire algae collection device; the part in the water is 3m, and the part above the water is 1.5m to prevent wind and waves from affecting the algae collection effect. The single wall of the device is 4m wide and 0.2m thick, and is constructed of reinforced concrete materials. The water outlet is a square with a side length of 0.3m, evenly distributed on the wall with intervals of 0.1m; the one-way plate is slightly larger than the water outlet; a metal shaft fixed in the wall at the top of the water outlet is used to achieve the purpose of limiting the movement of the one-way plate.

[0037] The water bloom near the water surface flows through the water outlet with directional plates and enters the algae collection device; the water bloom in Taihu Lake is mainly cyanobacteria bloom. The pseudo-cavity structure in the cyanobacteria cells allows the cyanobacteria to float to the surface of the water, absorb nutrients and light, and the cyanobacteria floating on the water surface adhere to each other and aggregate to further form large water blooms. The first row of water inlets on the upper part of the algae collection device is located above the water surface. When the lake water flows to the algae collection device, it pushes the one-way plate to enter the device, and the water bloom will also enter with the water flow; when the wind and waves push the surface water in the device to flow out of the device, the one-way plate falls due to the driving effect of the water flow, preventing the surface water and the water bloom from escaping the device; (4) The water flow near the bottom of the water passes through the water outlet with directional plates and flows out of the algae collection device to achieve water flow exchange; because the surface water flows into the algae collection device, in order to achieve water pressure balance, and due to the existence of the directional water outlet, the lake bottom water can only flow out of the device, forming a water circulation inside and outside the algae collection device. The blue algae of Taihu Lake only sink to the bottom of the lake to "hibernate" in late autumn and winter, and float on the water surface in summer and early autumn when the water is seriously hydrated. They cannot "escape" from the algae collecting device of the present invention with the bottom water flow, thereby achieving the purpose of collecting water blooms.

[0038] (5) Regularly dispatch algae-absorbing boats to collect algae blooms in the algae-collecting device; after the algae-collecting device is installed, the water surface conditions in the device should be observed regularly, and algae-absorbing boats should be dispatched to absorb algae according to the degree of algae bloom collection in the device. The algae slurry should be vacuum-dehydrated or directly transported to the factory for processing to achieve the purpose of resource utilization. At the same time, when regularly absorbing algae, the blockage of each water inlet and the damage to the wall should be checked, and corresponding maintenance measures should be taken in time. There have been algae-absorbing boats absorbing algae in waters with severe algae blooms on Taihu Lake for a long time. The construction of the device of the present invention can greatly improve the efficiency of algae collection and absorption.

[0039] The above are only preferred implementation modes of the present invention. The protection scope of the present invention is not limited to the above embodiments. For ordinary technicians in this field, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention should be regarded as the protection scope of the present invention.

Claims

1. A device for collecting algae blooms automatically without power consumption, characterized in that: It comprises a polygonal well body, the bottom of which is fixed on the bottom of the water, the middle part is in the water, and the top part is above the water surface; the polygonal well body is an enclosed polygonal well body formed by splicing a plurality of main walls of the same or different shapes in sequence; a plurality of main walls are provided with a plurality of water outlets, the plurality of water outlets comprise a water inlet and a water outlet, the water inlet is located on the upper part of the main wall, the water outlet is located below the water inlet, an inner one-way plate for blocking the water inlet is rotatably connected to the inner wall at the water inlet through a limiting device, and an outer one-way plate for blocking the water outlet is rotatably connected to the outer wall at the water outlet through a limiting device; the lower part of the main wall comprises a solid fixing part, the solid fixing part is fixed on the bottom of the water, and the water outlet is located above the solid fixing part; the water outlets are distributed in a matrix, the water outlets are square, the side length of the square is 0.3m-0.5m, and the areas of the inner one-way plate and the outer one-way plate are larger than the area of ​​the water outlets.

2. The algae collecting device for automatically collecting water blooms without power consumption according to claim 1, characterized in that: The distance between two adjacent water outlets is 0.05m-0.1m.

3. The algae collecting device for automatically collecting water blooms without power consumption according to claim 1, characterized in that: The inner one-way plate and the outer one-way plate are rotatably connected via a metal shaft fixed on the main wall.

4. The algae collecting device for automatically collecting water blooms without power consumption according to claim 3, characterized in that: The metal shaft is located at the top of the water outlet of the main wall.

5. The algae collecting device for automatically collecting water blooms without power consumption according to claim 4, characterized in that: When water flows through the water outlet, the maximum angle between the inner one-way plate and the outer one-way plate and the main wall is 90°.

6. The algae collecting device for automatically collecting water blooms without power consumption according to claim 1, characterized in that: The main wall is made of reinforced concrete, with a width of 2m-4m and a thickness of 0.1m-0.4m.

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