In-situ control device and control method for algae attached to leaves of submerged plants

Abstract

The present invention discloses an in-situ control device and control method for algae attached to the leaf surface of a submerged plant. The in-situ control device for algae attached to the leaf surface of a submerged plant comprises an enclosure component and a net component. The enclosure component is used to enclose a predetermined area in a pre-treated water area. The net component has a plurality of meshes. There are a plurality of models of the net component. The mesh sizes of different models of net components are different. The net component is arranged in the enclosure component, and the net component is detachably connected to the enclosure component. The present invention can avoid the risk of benthic animal snails and fish grazing on leaves, utilize the difference between the net component and the submerged plant in the colonization cycle of attached algae, and provide more growth points for attached algae in the form of a cyclic treatment of the net component, so that the net component and the submerged plant are in an advantageous position in the competition for the colonization of attached algae in the early growth stage, reduce the content of attached algae on the leaves of the submerged plant, and reduce the light inhibition effect of attached algae on the leaves of the submerged plant.

Description

Technical Field

[0001] The present application relates to the technical field of water treatment and water body restoration, and in particular to an in-situ control device and control method for algae attached to the leaf surfaces of submerged plants. Background Art

[0002] There is usually a complex layer of attached algae on the surface of submerged plants. The attached algae layer mainly includes algae, organic matter, silt, and floccules. The attached algae layer is generally distributed on the bottom old leaves of submerged plants. A large number of studies have shown that attached algae have a photoinhibitory effect on submerged plants and play an important role in the extinction of submerged plants. After removing the attached algae of submerged plants, their primary productivity will be greatly improved. Therefore, many studies are devoted to how to eliminate the adverse effects of attached algae.

[0003] At present, in traditional technology, benthic animals such as snails and fish are basically used to graze attached algae to achieve the purpose. However, this method has the following risks. First, benthic animals such as snails and fish will graze the leaves of submerged plants while grazing attached algae. Second, the photoinhibition effect of attached algae on the leaves of submerged plants may only work in the early stages of submerged plant germination, because most submerged plants have their biomass concentrated near the water surface after entering summer. Due to the fast growth rate of the top leaves of submerged plants and the swinging back and forth of wind and waves, there are few algae attached to the leaves. Based on this, the benthic animals such as snails and fish in traditional technology are generally suitable for mature submerged plant communities, and the application effect is not good for the entire initial stage of submerged plants. Summary of the invention

[0004] Based on this, it is necessary to provide an in-situ control device for algae attached to the leaves of submerged plants. The in-situ control device for algae attached to the leaves of submerged plants of the present invention is low-cost and easy to implement. It can reduce the biomass of the attached algae through circulation treatment and shading according to the distribution and colonization rules of the attached algae on the leaves of submerged plants, thereby reducing the light inhibition effect on submerged plants. The in-situ control device for algae attached to the leaves of submerged plants of the present invention and the control method are suitable for the entire initial stage of submerged plants.

[0005] An embodiment of the present application provides an in-situ control device for algae attached to the leaf surfaces of submerged plants.

[0006] An in-situ control device for algae attached to the leaves of submerged plants comprises an enclosure component and a net component. The enclosure component is used to enclose a predetermined area in a pre-treated water area. The net component has a plurality of mesh holes. There are a plurality of models of the net component, and the mesh sizes of the net components of different models are different. The net component is arranged in the enclosure component, and the net component is detachably connected to the enclosure component.

[0007] In some embodiments, the enclosure component includes fixed piles and a watertight enclosure. There are multiple fixed piles, and the fixed piles are used to be set in the pre-treated water area. The watertight enclosure is connected to the fixed piles to enclose a predetermined area.

[0008] In some of the embodiments, the spacing between adjacent fixing piles is 4m to 5m, and the fixing piles are 30cm to 50cm above the water surface when installed.

[0009] In some embodiments, the enclosure component further comprises a crushed stone weight, and the bottom of the watertight enclosure is pressed into the bottom mud of the pre-treated water area through the crushed stone weight;

[0010] In some embodiments, the color of the watertight enclosure is white;

[0011] And / or, the waterproof enclosure is made of nylon or polycarbonate plastic.

[0012] In some of the embodiments, the enclosure component further includes a foam attachment, which is connected to the top of the watertight enclosure. When the watertight enclosure is installed, the foam attachment connected thereto is 20 cm to 30 cm above the water surface.

[0013] In some of the embodiments, the device for in-situ regulation of algae attached to leaves of submerged plants further comprises a connecting piece, wherein the connecting piece is connected to the inner wall of the enclosure component, and the net component is hung on the connecting piece.

[0014] In some embodiments, the connecting member is an L-shaped component, and the net clothing component is connected to the connecting member by hanging with hooks.

[0015] In some embodiments, the device for in-situ regulation of algae attached to leaves of submerged plants also satisfies at least one of the following conditions:

[0016] (1) The net component is also connected to a tether, and the tether is connected to a floating component;

[0017] (2) The color of the netting component is white;

[0018] (3) The material of the netting component is nylon or polycarbonate plastic;

[0019] (4) The number of strands of the netting component is not less than 25, and the mesh diameter is not greater than 2 cm;

[0020] (5) When the bottom surface of the net component has a vertical support portion, the height of the vertical support portion is 10 cm to 15 cm.

[0021] An embodiment of the present application also provides a method for in situ regulation of algae attached to the leaf surfaces of submerged plants in lakes.

[0022] A method for in-situ regulation of algae attached to the leaf surfaces of submerged plants in lakes, using the above-mentioned in-situ regulation device for algae attached to the leaf surfaces of submerged plants, comprises the following steps:

[0023] (1) Enclosure components are arranged along the pre-treated water area, and the enclosure components are arranged along the outer contour of the planting area to form a closed area. According to the outer contour of the planting area given in the design drawings, fixed piles are arranged at intervals of 4m to 5m, and the tops of the fixed piles are 30cm to 50cm higher than the normal water level of the water surface. The rings at the top and bottom of the waterproof enclosure of the enclosure components are put on the fixed piles, and the bottom of the waterproof enclosure is pressed into the bottom mud with a crushed stone counterweight, and the foam float connected to the top of the waterproof enclosure is 20cm to 30cm higher than the normal water level of the water surface;

[0024] (2) placing the net component in the enclosure component, specifically, hanging the net component on the L-shaped connector at the bottom of the fixed pile, wherein the vertical portion of the net component is perpendicular to the main wind direction of the lake, and the horizontal portion of the net component is parallel to the water surface of the lake. The white floating component connected to the net component is firmly connected to the net component by a tether, so that the floating component is kept floating on the water surface and the tether is in a taut state;

[0025] (3) After 30 to 45 days, when the floating body is submerged in the water, the tether is pulled to remove the net as a whole and dry it in the sun. After cleaning the algae attached to the surface, the net is placed in the enclosure and hung on the L-shaped connector at the bottom of the fixed pile. The above operation is repeated until the water transparency is greater than 0.5.

[0026] (4) Pull the tether to remove the net component as a whole, plant submerged plants in the pre-treated water area, and then place the net component in the enclosure. Specifically, hang the net component on the L-shaped connector at the bottom of the fixed pile, cover the middle of the submerged plants, control the net component to be 10 cm to 15 cm away from the bottom of the pre-treated water area, and the vertical support part of the net component is in contact with the lake bottom mud; every 10 to 15 days, take out the net component to dry, wash it, remove the attached algae, and continue to fix it in the enclosure;

[0027] (5) Every 15 to 20 days, submerged plants in the pre-treated water area are manually scooped out regularly to observe the biomass of algae attached to their leaves and record the increase or decrease of the biomass of algae at different times; when the biomass of attached algae increases, the net parts with smaller mesh sizes are replaced, the cycle of taking out to dry and clean is shortened, the number of the net parts is increased or the height of the vertical support part of the net parts is reduced; when the biomass of attached algae decreases, the original treatment is maintained unchanged;

[0028] (6) When the submerged plants in the pre-treated water area grow to more than 80% of the water depth, the net component is replaced with a net component with a mesh size reduced by more than 50%; when the submerged plants in the pre-treated water area grow out of the water surface, the net component can be removed.

[0029] The above-mentioned in-situ control device for algae attached to the leaf surfaces of submerged plants directly avoids the risk of benthic animal snails and fish grazing on the leaves, and instead cleverly utilizes the difference between the net parts and the submerged plants in the colonization cycle of attached algae, and provides more growth points for attached algae by circulating the net parts, so that the net parts and the submerged plants are in an advantageous position in the competition for attached algae colonization in the early growth stage, thereby reducing the content of attached algae on the leaves of submerged plants and reducing the photoinhibition effect of attached algae on the leaves of submerged plants. The in-situ control method for algae attached to the leaf surfaces of lake submerged plants of the present invention belongs to a physical method, has a low safety risk coefficient, is simple and convenient to operate, has low technical difficulty, and the net parts can be reused many times, has low cost, and is easy to implement. According to the distribution and colonization rules of attached algae on the leaves of submerged plants, the biomass of attached algae can be reduced by circulating treatment and shading, thereby reducing the photoinhibition effect on submerged plants. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0031] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings. In the following description, the same reference numerals represent the same parts.

[0032] Figure 1 This is a schematic diagram of an in-situ control device for algae attached to the leaf surface of a submerged plant according to an embodiment of the present invention;

[0033] Figure 2 It is a schematic top view of an in-situ control device for algae attached to leaves of submerged plants according to an embodiment of the present invention.

[0034] Description of Reference Numerals

[0035] 10. In-situ control device for algae attached to the leaf surfaces of submerged plants; 100. Enclosure components; 110. Fixed piles; 120. Watertight enclosure; 130. Gravel counterweight; 140. Foam attachment; 200. Net components; 210. Vertical support; 300. Connectors; 400. Tethers; 500. Floating components; 600. Submerged plants. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0040] In the description of the present invention, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0042] The embodiment of the present application provides an in-situ control device 10 for algae attached to the leaf surface of a submerged plant, so as to solve the problem that the conventional technology adopts benthic animals, snails and fish, which are generally applicable to mature submerged plant 600 communities, but has poor applicability to the entire initial stage of the submerged plant 600. The in-situ control device 10 for algae attached to the leaf surface of a submerged plant will be described below in conjunction with the accompanying drawings.

[0043] The in-situ control device 10 for algae attached to the leaf surface of submerged plants provided in the embodiment of the present application is exemplary, please refer to Figure 1 As shown, Figure 1 The schematic diagram of the structure of the device 10 for in-situ regulation of algae attached to the leaf surface of submerged plants provided in the embodiment of the present application. The device 10 for in-situ regulation of algae attached to the leaf surface of submerged plants of the present application can be used for effectively regulating algae attached to the leaf surface of submerged plants 600, and the submerged plants 600 can be lakes, ponds and other areas. The method is simple and easy to implement, and has good sustainable effect.

[0044] In order to more clearly illustrate the structure of the in-situ control device 10 for algae attached to the leaf surfaces of submerged plants, the in-situ control device 10 for algae attached to the leaf surfaces of submerged plants will be introduced below with reference to the accompanying drawings.

[0045] For example, see Figure 1 As shown, an in-situ control device 10 for algae attached to the leaf surface of a submerged plant comprises an enclosure component 100 and a net component 200. The enclosure component 100 is used to enclose a predetermined area in a pre-treated water area. The net component 200 has a plurality of meshes. There are a plurality of models of the net component 200, and the mesh sizes of the net components 200 of different models are different. The net component 200 is disposed in the enclosure component 100. The net component 200 is detachably connected to the enclosure component 100.

[0046] In some embodiments, the enclosure component 100 includes a fixed pile 110 and a watertight enclosure 120. There are multiple fixed piles 110. The fixed piles 110 are used to be arranged in the pre-treated water area, and the watertight enclosure 120 is connected to the fixed piles 110 to achieve enclosure of the predetermined area.

[0047] In some of these embodiments, see Figure 2 As shown, the distance between adjacent fixing piles 110 is 4m to 5m, and the fixing piles 110 are 30cm to 50cm above the water surface when installed.

[0048] In some embodiments, the enclosure 100 further includes a crushed stone weight 130. The bottom of the watertight enclosure 120 is pressed into the bottom mud of the pre-treated water area by the crushed stone weight 130.

[0049] In some embodiments, the color of the watertight enclosure 120 is white. In the present application, the color of the watertight enclosure 120 is white, and the material is nylon or polycarbonate plastic, because the color will affect the colonization and development of the attached algae, and under the conditions of white and nylon or polycarbonate plastic material, a higher algae biomass can be obtained.

[0050] In some embodiments, the waterproof enclosure 120 is made of nylon or polycarbonate plastic.

[0051] In some of these examples, see Figure 1 As shown, the enclosure component 100 further includes a foam attachment 140. The foam attachment 140 is connected to the top of the watertight enclosure 120. When the watertight enclosure 120 is installed, the foam attachment 140 connected thereto is 20 cm to 30 cm above the water surface.

[0052] In some embodiments, the in-situ control device 10 for algae attached to the leaf surface of submerged plants further comprises a connecting member 300 . The connecting member 300 is connected to the inner wall of the enclosing member 100 . The net member 200 is hung on the connecting member 300 .

[0053] In some of these examples, see Figure 1 As shown, the connecting member 300 is an L-shaped component. The netting component 200 is connected to the connecting member 300 by hanging with a hook.

[0054] In some of these examples, see Figure 1 As shown, the net component 200 is also connected to a tether 400. The tether 400 is connected to a float component 500. The float component 500 floats on the water surface, and the tether 400 is in a tight state, which can prevent the net component 200 from collapsing due to excessive biomass of attached algae, and facilitate the installation and removal of the net component 200.

[0055] In some embodiments, the color of the mesh component 200 is white.

[0056] In some embodiments, the material of the net component 200 is nylon or polycarbonate plastic. In the present application, the net component 200 is white in color and made of nylon or polycarbonate plastic because the color affects the colonization and development of attached algae, and a higher algae biomass can be obtained under the conditions of white color and nylon or polycarbonate plastic material.

[0057] In some embodiments, the number of wire strands of the net component 200 is not less than 25, and the mesh diameter is not greater than 2 cm. When the number of wire strands of the net component 200 is constant, the smaller the mesh diameter, the larger the specific surface area, and in the accumulation process of organic matter in the early stage of attachment, more attachment growth sites will be provided to attract the attachment of algae. Therefore, the number of wire strands is limited to not less than 25, and the mesh diameter is not greater than 2 cm. This treatment can improve the capture ability of the net component 200 for attached algae.

[0058] In some of these examples, see Figure 1 As shown, when the bottom surface of the net component 200 has a vertical support portion 210, the height of the vertical support portion 210 is 10cm to 15cm. When the net component 200 in the present application is installed, the net component 200 is in a horizontal state as a whole, and the vertical support portion 210 is in a vertical state. The vertical support portion 210 is kept perpendicular to the main wind direction of the lake. First, it plays a role in reducing the re-suspension of the bottom mud caused by wind and wave disturbance and settling on the leaves of the submerged plant 600. Second, it increases the adsorption points of the attached algae and improves the adsorption amount of the algae attached to the lake by the net component 200. A large number of research experiments have confirmed that the attached algae will be more concentrated on the old leaves at the bottom of the submerged plant 600, and the algae at the bottom are more active. The special structure of the net component 200 that combines horizontal and vertical can provide more growth and attachment sites for the attached algae and capture more algae in horizontal and vertical motion. In addition, in the early growth stage of the submerged plant 600, the plant is limited in height and far away from the lake surface, resulting in insufficient light intensity. Therefore, the horizontal part of the net component 200 is selected to be set in the middle of the submerged plant 600, 10 cm to 15 cm away from the lake bottom.

[0059] An embodiment of the present application also provides a method for in situ regulation of algae attached to the leaf surfaces of submerged plants in lakes.

[0060] A method for in-situ regulation of algae attached to the leaf surfaces of submerged plants in lakes, using the above-mentioned in-situ regulation device 10 for algae attached to the leaf surfaces of submerged plants, comprises the following steps:

[0061] (1) The enclosure components 100 are arranged along the pre-treated water area. The enclosure components 100 are arranged along the outer contour of the planting area to form a closed area. According to the outer contour of the planting area given in the design drawings, fixed piles 110 are arranged at intervals of 4m to 5m. The tops of the fixed piles 110 are 30cm to 50cm higher than the normal water level of the water surface. The top and bottom rings of the watertight enclosure 120 of the enclosure component 100 are put on the fixed piles 110. The bottom of the watertight enclosure 120 is pressed into the bottom mud with a crushed stone counterweight 130. The foam float connected to the top of the watertight enclosure 120 is 20cm to 30cm higher than the normal water level of the water surface.

[0062] (2) The net component 200 is arranged in the enclosure component 100. Specifically, the net component 200 is hung on the L-shaped connector 300 at the bottom of the fixing pile 110, wherein the vertical portion of the net component 200 is kept perpendicular to the main wind direction of the lake, and the horizontal portion of the net component 200 is kept parallel to the water surface of the lake. The white floating component 500 connected to the net component 200 is firmly connected to the net component 200 through a tether 400, so that the floating component 500 is kept floating on the water surface and the tether 400 is kept in a taut state.

[0063] (3) After 30 to 45 days, when the floating part 500 is submerged in the water, the tether 400 is pulled to remove the net part 200 as a whole and dry it. After cleaning the algae attached to the surface, the net part 200 is continued to be placed in the enclosure part 100. The net part 200 is hung on the L-shaped connector 300 at the bottom of the fixed pile 110, and the above operation is repeated until the water transparency is greater than 0.5.

[0064] (4) Pull the tether 400 to remove the net component 200 as a whole, plant submerged plants 600 in the pre-treated water area, and then set the net component 200 in the enclosure component 100. Specifically, hang the net component 200 on the L-shaped connector 300 at the bottom of the fixed pile 110, and cover the middle of the submerged plants 600. The net component 200 is controlled to be 10 cm to 15 cm away from the bottom surface of the pre-treated water area, and the vertical support part 210 of the net component 200 is in contact with the lake bottom mud.

[0065] Every 10 to 15 days, the net part 200 is taken out and dried, and after washing, the attached algae are continued to be fixed in the enclosure part 100. Considering that it takes a certain amount of time for the attached algae to colonize on the leaves of the submerged plant 600 and the net part 200, and the existence of allelopathic effects on the submerged plant 600 leads to different colonization cycles of the two, and after the attached algae biomass reaches saturation, the biomass of the attached algae on the leaves and the net part 200 no longer increases, therefore, in the early stage of the attached algae colonization on the leaves of the submerged plant 600, selecting a cycle of 10 to 15 days can continuously provide new growth competition points, so that more attached algae choose to attach to the net part 200, thereby reducing the biomass of the attached algae on the leaves of the submerged plant 600 and reducing the light inhibition phenomenon of the leaves of the submerged plant 600.

[0066] (5) Every 15 to 20 days, submerged plants 600 in the pre-treated water area are manually scooped regularly to observe the biomass of algae attached to their leaves and record the increase or decrease of the biomass of algae at different times; when the biomass of attached algae increases, the net parts 200 with smaller mesh sizes are replaced, the cycle of taking out to dry and clean is shortened, the number of net parts 200 is increased or the height of the vertical support part 210 of the net parts 200 is reduced to provide more growth points for the growth of attached algae, improve the competitiveness of the net parts 200 in the competition process of attached algae colonization, and reduce the content of attached algae on the leaves of submerged plants 600. When the biomass of attached algae decreases, the original treatment is maintained unchanged.

[0067] (6) When the submerged plants 600 in the pre-treated water area grow to more than 80% of the water depth, the net component 200 is replaced with a net component 200 with a mesh size reduced by more than 50%. When the submerged plants 600 can grow normally, reducing the mesh size of the net component 200 can accelerate the withering of old leaves at the bottom of the submerged plants 600. The shading effect of the net component 200 will accelerate the death of attached algae. When the submerged plants 600 in the pre-treated water area grow out of the water surface, the net component 200 can be removed. At this time, the submerged plant 600 community has been formed, and removing the net component 200 provides more growth space for the submerged plants 600.

[0068] In the method of the present application, after 30d to 45d, the tether 400 is pulled to take out the entire net component 200 and dry it. After the algae attached to the surface are cleaned, the step of continuing to set the net component 200 in the enclosure component 100 is a direct low-cost physical method. By providing the most suitable attachment point for the colonization and development of the attached algae, the content of the attached algae in the lake water is continuously reduced by means of a circulation treatment. The immersion of the floating body 500 into the water surface is used as the standard for taking out the net component 200, which can be directly determined by naked eye observation, which is simpler and more convenient in actual operation.

[0069] In summary, the above-mentioned in-situ control device 10 for algae attached to the leaves of submerged plants directly avoids the risk of grazing on the leaves by benthic animals such as snails and fish, and instead cleverly utilizes the difference in the colonization cycle of attached algae between the net component 200 and the submerged plants 600, and provides more growth points for the attached algae by circulating the net component 200, so that the net component 200 and the submerged plants 600 are in an advantageous position in the competition for attached algae colonization in the early growth stage, thereby reducing the content of attached algae on the leaves of the submerged plants 600 and reducing the light inhibition effect of the attached algae on the leaves of the submerged plants 600. The in-situ regulation method of algae attached to the leaf surfaces of submerged plants in lakes of the present invention is a physical method with low safety risk factor, simple and convenient operation, low technical difficulty, and the net component 200 can be reused many times, with low cost and easy implementation. It can reduce the biomass of attached algae according to the distribution and colonization rules of attached algae on the leaves of submerged plants 600 through circulation treatment and shading, reduce the effect of light inhibition on submerged plants 600, and has no secondary pollution and better sustainability.

[0070] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0071] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A method for in situ regulation of algae attached to the leaf surfaces of submerged plants in lakes, characterized in that: The steps include: (1) Enclosure components are arranged along the pre-treated water area, and the enclosure components are arranged along the outer contour of the planting area to form a closed area. According to the outer contour of the planting area given in the design drawings, fixed piles are arranged at intervals of 4m to 5m, and the tops of the fixed piles are 30cm to 50cm higher than the normal water level of the water surface. The rings at the top and bottom of the waterproof enclosure of the enclosure components are put on the fixed piles, and the bottom of the waterproof enclosure is pressed into the bottom mud with a crushed stone counterweight, and the foam float connected to the top of the waterproof enclosure is 20cm to 30cm higher than the normal water level of the water surface; (2) placing the net component in the enclosure component, specifically, hanging the net component on the L-shaped connector at the bottom of the fixed pile, wherein the vertical portion of the net component is perpendicular to the main wind direction of the lake, and the horizontal portion of the net component is parallel to the water surface of the lake. The white floating component connected to the net component is firmly connected to the net component by a tether, so that the floating component is kept floating on the water surface and the tether is in a taut state; (3) After 30 to 45 days, when the floating body is submerged in the water, the tether is pulled to remove the net as a whole and dry it in the sun. After cleaning the algae attached to the surface, the net is placed in the enclosure and hung on the L-shaped connector at the bottom of the fixed pile. The above operation is repeated until the water transparency is greater than 0.

5. (4) Pull the tether to remove the net component as a whole, plant submerged plants in the pre-treated water area, and then place the net component in the enclosure. Specifically, hang the net component on the L-shaped connector at the bottom of the fixed pile, cover the middle of the submerged plants, control the net component to be 10 cm to 15 cm away from the bottom of the pre-treated water area, and the vertical support part of the net component is in contact with the lake bottom mud; every 10 to 15 days, take out the net component to dry, wash it, remove the attached algae, and continue to fix it in the enclosure; (5) Every 15 to 20 days, submerged plants in the pre-treated water area are manually scooped out regularly to observe the biomass of algae attached to their leaves and record the increase or decrease of the biomass of algae at different times; when the biomass of attached algae increases, the net parts with smaller mesh sizes are replaced, the cycle of taking out to dry and clean is shortened, the number of the net parts is increased or the height of the vertical support part of the net parts is reduced; when the biomass of attached algae decreases, the original treatment is maintained unchanged; (6) When the submerged plants in the pre-treated water area grow to more than 80% of the water depth, the net component is replaced with a net component with a mesh size reduced by more than 50%; when the submerged plants in the pre-treated water area grow out of the water surface, the net component can be removed.

2. An in-situ control device for algae attached to the leaf surfaces of submerged plants used in the in-situ control method for algae attached to the leaf surfaces of submerged plants in lakes as claimed in claim 1, characterized in that: It comprises an enclosure component and a net component. The enclosure component is used to enclose a predetermined area in the pre-treated water area. The net component has a plurality of mesh holes. There are a plurality of models of the net component. The mesh holes of different models are of different sizes. The net component is arranged in the enclosure component and is detachably connected to the enclosure component.

3. The in-situ control device for algae attached to the leaves of submerged plants according to claim 2, characterized in that: The enclosure component includes fixed piles and watertight enclosures. There are multiple fixed piles, which are used to be set in the pre-treated water area. The watertight enclosure is connected to the fixed piles to enclose a predetermined area.

4. The in-situ control device for algae attached to leaves of submerged plants according to claim 3, characterized in that: The distance between adjacent fixing piles is 4m-5m, and the fixing piles are 30cm-50cm above the water surface when installed.

5. The in-situ control device for algae attached to leaves of submerged plants according to claim 3, characterized in that: The enclosure component also includes a crushed stone counterweight, and the bottom of the watertight enclosure is pressed into the bottom mud of the pre-treated water area through the crushed stone counterweight.

6. The in-situ control device for algae attached to leaves of submerged plants according to claim 3, characterized in that: The color of the watertight enclosure is white; And / or, the waterproof enclosure is made of nylon or polycarbonate plastic.

7. The in-situ control device for algae attached to leaves of submerged plants according to claim 3, characterized in that: The enclosure component also includes a foam attachment, which is connected to the top of the watertight enclosure. When the watertight enclosure is installed, the foam attachment connected to it is 20 cm to 30 cm above the water surface.

8. The in-situ control device for algae attached to the leaves of submerged plants according to any one of claims 2 to 7, characterized in that: The in-situ control device for algae attached to the leaf surfaces of submerged plants also includes a connecting piece, which is connected to the inner wall of the enclosure component, and the net component is hung on the connecting piece.

9. The in-situ control device for algae attached to leaves of submerged plants according to claim 8, characterized in that: The connecting piece is an L-shaped component, and the net clothing component is connected to the connecting piece by hanging with a hook.

10. The in-situ control device for algae attached to the leaf surface of submerged plants according to any one of claims 2 to 7 and 9, characterized in that: The in-situ control device for algae attached to the leaves of submerged plants also meets at least one of the following conditions: (1) The net component is also connected to a tether, and the tether is connected to a floating component; (2) The color of the netting component is white; (3) The material of the netting component is nylon or polycarbonate plastic; (4) The number of strands of the netting component is not less than 25, and the mesh diameter is not greater than 2 cm; (5) When the bottom surface of the net component has a vertical support portion, the height of the vertical support portion is 10 cm to 15 cm.

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