Cyanobacteria control device and method

Abstract

The present invention discloses a cyanobacteria control device and a cyanobacteria control method. The cyanobacteria control device includes a flow diversion mechanism and an algae capture mechanism. The flow diversion mechanism has a flow diversion channel. The algae capture mechanism includes a capture component, a magnetization component, a filter component, a focusing component, a shielding component, an adsorption component, and an ultraviolet irradiation component. The capture component includes a capture chamber and an enrichment chamber that are connected to each other. The capture component is provided with a water inlet and a water outlet connected to the capture chamber. The water inlet is connected to the flow diversion channel. The filter component is installed at the water outlet. The magnetization component is installed at the water inlet. The focusing component is detachably connected to the capture component. The shielding component is detachably connected to the capture component. The adsorption component is detachably installed in the enrichment chamber. The ultraviolet irradiation component is installed in the enrichment chamber. The above-mentioned cyanobacteria control device can improve the efficiency of cyanobacteria capture, achieve the purpose of synergistically and efficiently treating algae enrichment and capture with algal toxins, and provide flexible algae capture and treatment.

Description

Technical Field

[0001] The present application relates to the technical field of water treatment and water body restoration, and in particular to a cyanobacteria control device and a cyanobacteria control method. Background Art

[0002] Cyanobacterial blooms can cause a range of ecological and environmental problems, including blockages in water supply systems, unpleasant odors in water bodies, and the death of aquatic organisms. In severe cases, they can even threaten drinking water safety. Therefore, effective control technologies are crucial for their prevention and control. Traditionally, physical, chemical, and biological techniques have been developed for controlling cyanobacterial blooms in lakes and reservoirs. However, each technique has its own specific application scope and limitations. For example, ultrasonic algae control technology has good sedimentation effect and fast emergency response speed, but it will cause algae cells to rupture and algae toxins to be released; aeration and oxygenation technology can quickly increase oxygen to prevent black and odor, but it will cause sediment resuspension and nutrient release; water pump aeration algae inhibition technology has no secondary pollution, but is limited to water bodies with algae stratification and is not suitable for shallow lakes; density flow diffusion algae inhibition technology uses the density difference of the water body itself to break the vertical thermal stratification, with low energy consumption and flexible application, but is limited to water bodies with temperature stratification; mechanical algae removal technology is to treat cyanobacteria off-site to effectively reduce the amount of algae in the water body, but the treatment volume is too small and the treatment efficiency is not high; clay flocculation technology has the advantages of being natural and non-toxic, easy to use, and having obvious adsorption effect, but algae cells are only It is a temporary sedimentation and poses potential ecological risks; pressurized algae control technology has low energy consumption, high efficiency, and low operating costs, but cyanobacteria still remain in the water body and pose potential ecological risks; chemical algaecides are fast and effective, but there is a risk of secondary pollution; chemical coagulation / flocculation technology has a fast sedimentation rate and good transparency improvement effect, but some organic polymer flocculants have a secondary pollution risk; microbial preparations are fast-acting, but microbial control is difficult and the subsequent potential ecological risks are high; biological manipulation technology is safe and has no secondary pollution risk, but the control effect is slow and the emergency response effect is poor; aquatic plant algae inhibition technology has good effect, low cost, easy access to materials, and low secondary pollution risk, but growth management is difficult and uncertain. Therefore, physical algae control technology is widely used due to its high safety, but it has disadvantages such as high cost and lack of long-term effectiveness; chemical algae control technology is limited in application due to the risk of secondary pollution; biological algae control technology has ecological safety issues such as alien species invasion and ecosystem disruption, and there are currently few cases of actual application.

[0003] One current approach to cyanobacteria management is to reduce cyanobacteria sources, block their recovery, and address the problem at the source and path. This is based on the fact that in winter, under conditions of low temperature and low light intensity, cyanobacteria settle to the bottom mud and dormant. In spring, when the temperature and light increase, they can float back up to the water body to complete their recovery. In summer, they will grow significantly until they float to the surface of the water body and form a "water bloom" visible to the naked eye. For example, during the overwintering and recovery periods, algae control agents are used to perform background removal of overwintering cyanobacteria sources in water bodies and bottom muds; modified mineral covering + plant straw covering is used to inhibit the recovery growth and resuspension of overwintering cyanobacteria; microcurrent electrolysis + micro-nano aeration is used to in situ inhibit the "sources" of cyanobacteria in the bottom mud during the overwintering and early recovery periods; algaecides are used in A cover layer forms on the surface of the distribution area of ​​overwintering cyanobacteria, and the overwintering cyanobacteria sources are removed in situ. In actual application, a comparative study of the overwintering and spring recovery of cyanobacteria blooms in Taihu Lake and Chaohu Lake found that the method of using source control to control cyanobacteria, in different water bodies, does not always reduce the biomass of cyanobacteria by reducing the sediment source. Another approach is to promote the succession of cyanobacteria to other types of algae. For example, through aeration, the microcystis blooms are cultivated into fine particles of diatom aggregates, promoting the succession of microcystis to diatoms and achieving the purpose of controlling cyanobacteria; the combination of shading and aeration is used to control cyanobacteria. However, the method of promoting the succession of cyanobacteria to other types of algae ignores the release of microcystis toxins during the death and decay of cyanobacteria, which can also cause environmental pollution. Summary of the Invention

[0004] Based on this, it is necessary to provide a cyanobacteria control device. The cyanobacteria control device of the present invention can improve the efficiency of cyanobacteria capture, combine ultraviolet radiation with adsorption, and use chlorophyll to achieve complete photodegradation of algal toxins. This device avoids the disadvantage of conventional photodegradation that produces a large number of potentially toxic isomer products, achieving the goal of synergistically facilitating algae enrichment and capture with the efficient treatment of algal toxins, and provides greater flexibility and better treatment results.

[0005] An embodiment of the present application provides a device for controlling blue algae.

[0006] A blue algae control device includes a diversion mechanism and an algae capture mechanism, wherein the diversion mechanism has a diversion channel, the algae capture mechanism includes a capture component, a magnetization component, a filtering component, a focusing component, a shielding component, an adsorption component and an ultraviolet light component, the capture component includes a connected capture chamber and an enrichment chamber, the capture component is provided with a water inlet and a water outlet connected to the capture chamber, the water inlet is connected to the diversion channel, the filtering component is installed on the water outlet, and when installed, the capture chamber is set in the water to be treated and the water inlet is located above the liquid surface. The water outlet is close to the bottom mud layer of the water body to be treated, the enrichment chamber is buried in the bottom mud layer, the magnetization component is arranged at the water inlet to magnetize the algae in the water body to be treated, the focusing component is detachably connected to the capture component to focus light on the capture chamber, the shielding component is detachably connected to the capture component to close or open the channel between the capture chamber and the enrichment chamber, the adsorption component is detachably arranged in the enrichment chamber to adsorb cyanobacteria in the enrichment chamber, and the ultraviolet irradiation component is installed in the enrichment chamber.

[0007] In some embodiments, the diversion channel includes a first end and an opposite second end, wherein the opening size of the first end is larger than the opening size of the second end, and the second end is connected to the capture component to communicate with the water inlet.

[0008] In some embodiments, the opening size of the first end portion of the guide channel gradually increases from a side close to the first end portion to a side far from the first end portion, so that the first end portion is trumpet-shaped.

[0009] In some embodiments, the size of the water inlet gradually increases from the outside to the inside;

[0010] And / or, the size of the water outlet gradually increases from the outside to the inside.

[0011] In some embodiments, the flow guiding mechanism has buoyancy;

[0012] And / or, the magnetized component includes a first magnet and a second magnet, the first magnet and the second magnet are respectively installed on both sides of the water inlet nozzle, and the magnetic properties of the first magnet and the second magnet are opposite;

[0013] And / or, the filter component is a filter mesh.

[0014] In some embodiments, the focusing component is a convex lens. When in use, the focusing component is installed on the top of the capturing component to converge light in the capturing chamber to enhance the light intensity.

[0015] In some embodiments, the shielding component includes a shielding plate and a mounting clip, the mounting clip is installed on the inner wall of the channel connecting the capture chamber and the enrichment chamber, and the shielding plate is detachably connected to the mounting clip to close or open the channel connecting the capture chamber and the enrichment chamber.

[0016] In some embodiments, the adsorption component includes activated carbon and / or biochar, and the adsorption component can be moved into or removed from the enrichment chamber.

[0017] In some embodiments, the size of the capture chamber gradually decreases from one end away from the enrichment chamber to the end connected to the enrichment chamber, and the size of the enrichment chamber gradually decreases from one end away from the capture chamber to the end connected to the capture chamber.

[0018] An embodiment of the present application provides a method for controlling cyanobacteria.

[0019] A method for controlling cyanobacteria, using the above-mentioned cyanobacteria control device, comprises the following steps:

[0020] S1. Installing a cyanobacteria control device in a water body to be treated, controlling a diversion mechanism to be located at the liquid surface to capture algae, a water inlet on a capture chamber to be located below the liquid surface, and a water outlet close to the bottom mud layer of the water body to be treated, and burying an enrichment chamber in the bottom mud layer with the top of the enrichment chamber below the bottom mud layer surface; utilizing wind and wave disturbances, the diversion mechanism collects wastewater containing cyanobacteria from the surface layer of the water body to be treated, magnetizes the wastewater by a magnetizing component at the water inlet, and then enters the capture chamber and the enrichment chamber. The wastewater enters through the water inlet and is discharged through the water outlet, repeating the cycle.

[0021] S2. During a first predetermined time period on day N, a light-concentrating member is installed on the capture member to concentrate light in the capture chamber, thereby causing the algae in the capture chamber to move downward into the enrichment chamber. After light concentration is completed, the light-concentrating member is removed and the aggregated cyanobacteria on the light-concentrating member is cleaned;

[0022] S3. After a preset time point on day N, placing the adsorption component in the enrichment chamber until a preset time point on day N+2;

[0023] S4. During a second predetermined time period from day N to day N+1, a shielding member is installed in the passage between the capture chamber and the enrichment chamber to shield the enrichment chamber and prevent the cyanobacteria accumulated in the enrichment chamber from floating up.

[0024] S5. On day N+1, repeat steps S2 and S4;

[0025] S6. At a preset time point on day N+2, removing the adsorption component from the enrichment chamber;

[0026] S7, repeat steps S2 to S6, with a cumulative processing time of 14 to 21 days; and

[0027] S8. Start the ultraviolet irradiation component to irradiate the enrichment chamber with ultraviolet rays and replenish chlorophyll a into the enrichment chamber.

[0028] The cyanobacteria control device of the present invention can improve the efficiency of cyanobacteria capture, combine ultraviolet radiation with adsorption and use chlorophyll to achieve complete photodegradation of algae toxins, and avoid the disadvantage of conventional photodegradation producing a large number of potentially toxic isomer products, thereby achieving the purpose of algae enrichment and capture and coordinated and efficient treatment of algae toxins, and the algae capture and treatment is more flexible and the treatment effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0030] 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.

[0031] Figure 1 This is a schematic top view of a cyanobacteria control device according to an embodiment of the present invention when installed in a water body;

[0032] Figure 2 Schematic diagram of the algae capture mechanism of the blue algae control device according to one embodiment of the present invention.

[0033] Description of Reference Numerals

[0034] 10. Blue-green algae control device; 100. Diversion mechanism; 101. Diversion channel; 200. Algae capture mechanism; 201. Capture chamber; 202. Enrichment chamber; 210. Water inlet; 220. Water outlet; 230. Capture component; 240. Magnetization component; 250. Filter component; 260. Focusing component; 270. Shielding component; 271. Shielding plate; 272. Mounting buckle; 280. Adsorption component; 290. Ultraviolet light component; 291. Power supply; 292. Wire; 293. Ultraviolet lamp. DETAILED DESCRIPTION

[0035] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] 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 to 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, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0037] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0038] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0039] In the description of the present invention, "several" means more than one, "plurality" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0040] As used herein, "optionally," "optional," and "optional" mean optional, meaning that the option is selected from either of the two parallel options of "with" or "without." If multiple "optional" options appear in a technical solution, each option is independent unless otherwise specified and there are no contradictions or mutual constraints. In this application, expressions such as "optionally contain" and "optionally include" mean "contain or not contain."

[0041] In this article, unless otherwise indicated, each reaction step may be carried out in the order in which it is presented, or may be carried out out of the order in which it is presented. For example, other steps may be included between each reaction step, and the order of the reaction steps may be appropriately reversed. This is something that can be determined by a skilled person based on conventional knowledge and experience. Preferably, the reaction methods described herein are carried out sequentially.

[0042] In this application, when referring to a numerical interval (i.e., a numerical range), unless otherwise specified, the distribution of the optional numerical values ​​within the numerical interval is deemed to be continuous and includes the two numerical endpoints of the numerical interval (i.e., the minimum and maximum values), as well as each numerical value between the two numerical endpoints. Unless otherwise specified, when a numerical interval refers only to integers within the numerical interval, it includes the two endpoint integers of the numerical range, as well as each integer between the two endpoints, which is equivalent to directly listing each integer. When multiple numerical ranges are provided to describe a feature or characteristic, these numerical ranges can be combined. In other words, unless otherwise specified, the numerical ranges disclosed in this application should be understood to include any and all subranges included therein. The "numerical value" in the numerical interval can be any quantitative value, such as a number, percentage, ratio, etc. "Numerical interval" is broadly allowed to include quantitative intervals such as percentage intervals, ratio intervals, and ratio intervals.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0044] The present application provides a cyanobacteria control device to solve at least one of the following technical problems in conventional technologies for treating cyanobacteria blooms: (1) physical algae control technology has disadvantages such as high cost and insufficient long-term effectiveness; (2) chemical algae control technology has the problem of secondary pollution risk, which limits its application; (3) biological algae control technology has ecological safety issues such as alien species invasion and ecosystem disruption; (4) the method of reducing cyanobacteria seed sources is not fully applicable to various water bodies; (5) the method of promoting the succession of cyanobacteria to other types of algae has the problem of microcystin toxins released during the death and decay of cyanobacteria, causing environmental pollution. The cyanobacteria control device will be described below with reference to the accompanying drawings.

[0045] The blue algae control device 10 provided in the embodiment of the present application is exemplary, see Figure 1 As shown, Figure 1 This is a schematic top view of a cyanobacteria control device according to one embodiment of the present invention installed in a body of water. The cyanobacteria control device 10 of this application can be used to treat cyanobacteria blooms and is applicable to most water bodies, achieving excellent treatment results. To more clearly illustrate the structure of the cyanobacteria control device 10, the following description is provided with reference to the accompanying figures.

[0046] For example, see Figure 2 As shown, a cyanobacteria control device 10 includes a flow guide mechanism 100 and an algae capture mechanism 200. The flow guide mechanism 100 has a flow guide channel 101. The algae capture mechanism 200 includes a capture component 230, a magnetization component 240, a filter component 250, a light focusing component 260, a shielding component 270, an adsorption component 280, and an ultraviolet light irradiation component 290.

[0047] The capture component 230 includes a capture chamber 201 and an enrichment chamber 202 that are connected to each other. The capture component 230 is provided with a water inlet 210 and a water outlet 220 that are connected to the capture chamber 201. The water inlet 210 is connected to the diversion channel 101, and the filter component 250 is installed on the water outlet 220. During installation, the capture chamber 201 is set in the water body to be treated and the water inlet 210 is located below the liquid surface, the water outlet 220 is close to the bottom mud layer of the water body to be treated, and the enrichment chamber 202 is buried in the bottom mud layer. The magnetization component 240 is provided at the water inlet 210 for magnetizing algae in the water body to be treated. The focusing component 260 is detachably connected to the capture component 230 for focusing light on the capture chamber 201. The shielding member 270 is detachably connected to the capture member 230 to block or open the passage between the capture chamber 201 and the enrichment chamber 202. The adsorption member 280 is detachably disposed within the enrichment chamber 202 to adsorb cyanobacteria within the enrichment chamber 202. The ultraviolet irradiation member 290 is mounted within the enrichment chamber 202.

[0048] The present invention is based on the movement law of cyanobacteria in the water body to be treated, such as ponds and lakes, and proposes a targeted solution. First, the mass transfer effect of wind and waves is used to cause the cyanobacteria group to undergo horizontal displacement and enter the interior of the cyanobacteria control device 10. Since there is a spatial mutation in the process of wind and waves entering the algae capture device, it will cause an increase in flow rate, which will cause the cyanobacteria group floating on the surface of the water body to be turbulently captured and move away from the water surface to the deep water layer, that is, to the enrichment chamber 202; secondly, the magnetized component 240, such as a ring magnet, is used to increase the absorption rate of water to light, and the focusing component 260, such as a convex lens, is used to enhance the light intensity, so that the light intensity inside the algae capture device is greater than the compensation light intensity of the cyanobacteria, and the photosynthetic light is generated. Under this effect, the density of the cyanobacteria group becomes too high and sinks, entering the enrichment chamber 202. At night, under no light conditions, the density of the cyanobacteria decreases and quickly floats to the water surface. The waterproof shielding component 270 is used to prevent the cyanobacteria from floating up, firmly capturing the cyanobacteria group in the enrichment chamber 202; finally, the ultraviolet radiation of the ultraviolet light component 290 and the adsorption effect of the adsorption component 280 such as activated carbon or biochar are used in combination, and with the help of supplementary chlorophyll, the photodegradation efficiency of algae toxins released during the death or decay of the algae group is further improved, avoiding the disadvantage of conventional photodegradation producing a large number of potentially toxic isomer products, and achieving better removal effect, thereby achieving the purpose of efficient algae control and algae toxin removal.

[0049] In some of these examples, see Figure 2 As shown, the diversion channel 101 includes a first end and an opposite second end, wherein the opening size of the first end is larger than the opening size of the second end, and the second end is connected to the capture component 230 to communicate with the water inlet 210.

[0050] In some of these examples, see Figure 2 As shown, the opening size of the first end portion of the guide channel 101 gradually increases from the side close to the first end portion to the side away from the first end portion, so that the first end portion is approximately in a trumpet-shaped structure.

[0051] In some of these examples, see Figure 2 As shown, the size of the water inlet 210 gradually increases from the outside to the inside, forming a trumpet-shaped structure. The gradual increase in the size of the water inlet 210 from the outside to the inside can facilitate the enrichment of blue algae in the water body.

[0052] In some embodiments, the size of the water outlet 220 gradually increases from the outside to the inside, forming a trumpet-like structure.

[0053] In some of these examples, see Figure 2 As shown, the opening plane of the water outlet nozzle 220 faces downward.

[0054] In some embodiments, the flow guiding mechanism 100 has buoyancy, and the flow guiding mechanism 100 can be suspended in the water to be treated by its own buoyancy, so as to move according to the fluctuation of the water.

[0055] In some embodiments, the magnetized component 240 includes a first magnet and a second magnet. The first magnet and the second magnet are respectively installed on two sides of the water inlet nozzle 210, and the magnetic properties of the first magnet and the second magnet are opposite.

[0056] In some embodiments, the filter component 250 is a filter screen, and the mesh size of the filter screen can be set according to actual needs.

[0057] In some embodiments, the light focusing member 260 is a convex lens. When in use, the light focusing member 260 is mounted on the top of the capture member 230 to focus light in the capture chamber 201 to enhance light intensity.

[0058] In some embodiments, the shielding member 270 includes a shielding plate 271 and a mounting clip 272. The mounting clip 272 is mounted on the inner wall of the passageway between the capture chamber 201 and the enrichment chamber 202. The shielding plate 271 is detachably connected to the mounting clip 272 to close or open the passageway between the capture chamber 201 and the enrichment chamber 202.

[0059] In some embodiments, the adsorption component 280 includes activated carbon and / or biochar. The adsorption component 280 can be moved into or removed from the enrichment chamber 202.

[0060] In some embodiments, the size of the capture chamber 201 gradually decreases from the end away from the enrichment chamber 202 to the end connected to the enrichment chamber 202, and the size of the enrichment chamber 202 gradually decreases from the end away from the capture chamber 201 to the end connected to the capture chamber 201, so that the connection between the capture chamber 201 and the capture chamber 201 is approximately a dumbbell shape with a narrow middle and large ends.

[0061] In some embodiments, the ultraviolet light irradiation component 290 includes a power supply 291 , a wire 292 , and an ultraviolet lamp 293 . The ultraviolet lamp 293 is connected to the power supply 291 via the wire 292 .

[0062] In some embodiments, there may be multiple UV lamps 293 , and the multiple UV lamps 293 are distributed on the four walls of the capture chamber 201 .

[0063] In some embodiments, the power of the ultraviolet lamp 293 is 20W~30W, the main emission wavelength is 254nm, and multiple ultraviolet lamps 293 are symmetrically arranged in the capture chamber 201.

[0064] The above-mentioned cyanobacteria control device 10 can improve the efficiency of cyanobacteria capture, combine ultraviolet radiation with adsorption and use chlorophyll to achieve complete photodegradation of algae toxins, and avoid the shortcomings of conventional photodegradation in producing a large number of potentially toxic isomer products, thereby achieving the purpose of algae enrichment and capture and coordinated and efficient treatment of algae toxins, and the algae capture and treatment is more flexible and the treatment effect is better.

[0065] An embodiment of the present application provides a method for controlling cyanobacteria.

[0066] A method for controlling cyanobacteria, using the above-mentioned cyanobacteria control device 10, comprises the following steps:

[0067] S1. The cyanobacteria control device 10 is placed in the water body to be treated. The diversion mechanism 100 is controlled to be located at the liquid surface to capture algae. The water inlet 210 on the capture chamber 201 is located below the liquid surface, and the water outlet 220 is close to the bottom mud layer of the water body to be treated. The enrichment chamber 202 is buried in the bottom mud layer, and the top of the enrichment chamber 202 is lower than the bottom mud layer surface. Due to the disturbance of wind and waves, the diversion mechanism 100 collects sewage containing cyanobacteria from the surface of the water body to be treated. After being magnetized by the magnetization component 240 at the water inlet 210, the sewage enters the capture chamber 201 and the enrichment chamber 202. The sewage enters through the water inlet 210 and is discharged through the water outlet 220, and the cycle continues.

[0068] S2. During the first predetermined time period on the Nth day (for example, from 8:00 a.m. to 16:00 p.m.), the focusing component 260 is installed on the capture component 230 to focus light on the capture chamber 201, so as to prompt the algae in the capture chamber 201 to move downward into the enrichment chamber 202. After the focusing is completed, the focusing component 260 is removed and the clustered cyanobacteria on the focusing component 260 are cleaned.

[0069] S3. After the preset time point on the Nth day, the adsorption component 280 is placed in the enrichment chamber 202 until the preset time point on the N+2th day.

[0070] S4. During the second predetermined time period from the Nth day to the N+1th day, the shielding component 270 is installed in the passage connecting the capture chamber 201 and the enrichment chamber 202 to shield the enrichment chamber 202 and prevent the cyanobacteria enriched in the enrichment chamber 202 from floating up. Outside the second predetermined time period, the shielding component 270 is removed.

[0071] S5. On day N+1, repeat steps S2 and S4.

[0072] S6. At a preset time point on day N+2, the adsorption component 280 in the enrichment chamber 202 is removed.

[0073] S7. Repeat steps S2 to S6, with a cumulative processing time of 14 to 21 days.

[0074] S8. Start the ultraviolet irradiation component 290 to irradiate the enrichment chamber 202 with ultraviolet rays and replenish chlorophyll a into the enrichment chamber 202.

[0075] In some embodiments, the preset time point on the Nth day and the preset time point on the N+2th day may be 8:00 in the morning.

[0076] In some embodiments, the first predetermined time period may be from 8:00 to 16:00 on the same day, for a total of 8 hours.

[0077] In some embodiments, the second predetermined time period may be from 16:00 on the first day to 8:00 on the next morning, for a total of 16 hours.

[0078] In some embodiments, when the cyanobacteria control device 10 is installed, the bottom opening plane of the water outlet 220 is in a horizontal state and remains parallel to the bottom mud layer of the water body to be treated. The bottom opening plane of the water outlet 220 is 5 cm to 10 cm higher than the bottom mud layer of the water body to be treated.

[0079] In some embodiments, the bottom of the capture chamber 201 is 50 cm to 70 cm lower than the bottom mud layer of the water body to be treated.

[0080] In some embodiments, in step S6, the adsorption component 280 in the enrichment chamber 202 is taken out at 8 o'clock on the N+2 day, and the adsorption time of the adsorption component 280 is from 8 o'clock on the N day to 8 o'clock on the N+2 day, a total of 40 hours.

[0081] In some embodiments, in step S6, after the adsorption component 280 is taken out, the adsorption component 280 is cleaned. During the cleaning process, the adsorption component 280 is naturally dried and exposed to the sun for 3h-5h, and then is ready for use again.

[0082] In some embodiments, in step S4, after the second predetermined period of time, the shielding member 270 is removed, cleaned, and kept ready for use.

[0083] In some embodiments, in step S8 , the ultraviolet light irradiation component 290 is turned on for a treatment period from 11 a.m. to 1 p.m., and the power supply 291 of the cyanobacteria control device 10 is turned off after the treatment is completed.

[0084] Example 1

[0085] This embodiment provides a method for controlling cyanobacteria.

[0086] The blue algae control method of this embodiment uses a blue algae control device 10. Figure 2 As shown, Figure 2This is a schematic diagram of the algae capture mechanism of the cyanobacteria control device according to Example 1 of the present invention. The cyanobacteria control device 10 used in this embodiment includes a flow diversion mechanism 100 and an algae capture mechanism 200. The flow diversion mechanism 100 is buoyant. It includes a flow diversion channel 101, which includes a first end and an opposing second end. The opening size of the first end of the flow diversion channel 101 gradually increases from the side closest to the first end to the side farther away from the first end, resulting in a trumpet-like structure.

[0087] The algae capture mechanism 200 includes a capture unit 230, a magnetizing unit 240, a filtering unit 250, a focusing unit 260, a shielding unit 270, an adsorption unit 280, and an ultraviolet light irradiation unit 290. The capture unit 230 includes a capture chamber 201 and an enrichment chamber 202, which are interconnected. The size of the capture chamber 201 gradually decreases from the end away from the enrichment chamber 202 to the end connected to the enrichment chamber 202. The size of the enrichment chamber 202 gradually decreases from the end away from the capture chamber 201 to the end connected to the capture chamber 201, resulting in a connection between the capture chambers 201 and 201, approximately forming a dumbbell shape with a narrow center and wide ends. The capture unit 230 is provided with a water inlet 210 and a water outlet 220, which are connected to the capture chamber 201. The size of the water inlet 210 gradually increases from the outside to the inside, forming a structure similar to a trumpet. The size of the water outlet 220 gradually increases from the outside to the inside, forming a trumpet-like structure. When installed and used, the opening plane of the water outlet 220 faces downward, the water inlet 210 is connected to the diversion channel 101, and the filter component 250 is installed on the water outlet 220. The filter component 250 is a filter mesh.

[0088] Magnetizing component 240 is located at water inlet 210 to magnetize algae in the water to be treated. Magnetizing component 240 includes a first magnet and a second magnet. The first and second magnets are mounted on opposite sides of water inlet 210, with opposite magnetic properties.

[0089] The focusing member 260 is a convex lens. It is detachably connected to the capture member 230 to focus light into the capture chamber 201. When in use, the focusing member 260 is mounted on top of the capture member 230 to focus light into the capture chamber 201, thereby enhancing illumination intensity.

[0090] Shielding member 270 includes a shielding plate 271 and a mounting clip 272. Mounting clip 272 is mounted on the inner wall of the passageway between capture chamber 201 and enrichment chamber 202. Shielding plate 271 is detachably connected to mounting clip 272 to close or open the passageway between capture chamber 201 and enrichment chamber 202.

[0091] The adsorption component 280 is detachably disposed within the enrichment chamber 202 for adsorbing cyanobacteria within the enrichment chamber 202. The adsorption component 280 includes activated carbon and biochar. The adsorption component 280 can be moved into or removed from the enrichment chamber 202.

[0092] UV illumination unit 290 is installed in enrichment chamber 202. It includes a power supply 291, wires 292, and UV lamps 293. UV lamps 293 are connected to power supply 291 via wires 292. Multiple UV lamps 293 are located along the four walls of capture chamber 201. Each UV lamp has a power of 20W to 30W and emits light at a primary wavelength of 254nm. These lamps are symmetrically arranged throughout capture chamber 201.

[0093] The cyanobacteria control method of this embodiment is used to treat waters in a certain area. Before treatment, the average cyanobacteria content in the waters is 40 μg / L. The average cyanobacteria content of 40 μg / L is calculated based on the chlorophyll a concentration. The cyanobacteria control method includes the following steps:

[0094] S1. Install the blue algae control device 10 in the water to be treated. Figure 1 As shown, when the cyanobacteria control device 10 is installed, the bottom opening plane of the water outlet 220 is in a horizontal state and remains parallel to the bottom mud layer of the water body to be treated. The control diversion mechanism 100 is located at the liquid surface to capture algae. The bottom of the capture chamber 201 is 60 cm lower than the bottom mud layer of the water body to be treated. The water inlet 210 on the capture chamber 201 is located below the liquid surface. The water outlet 220 is close to the bottom mud layer of the water body to be treated and the bottom opening plane of the water outlet 220 is 8 cm higher than the bottom mud layer of the water body to be treated. The enrichment chamber 202 is buried in the bottom mud layer and the top of the enrichment chamber 202 is lower than the surface of the bottom mud layer. Through the action of wind and wave disturbance, the diversion mechanism 100 collects sewage containing cyanobacteria on the surface of the water body to be treated, which is magnetized by the magnetized component 240 at the water inlet 210 and enters the capture chamber 201 and the enrichment chamber 202. The sewage enters through the water inlet 210 and is discharged through the water outlet 220, and the cycle continues.

[0095] S2. Between 8:00 a.m. and 16:00 p.m. on the first day, the focusing component 260 is installed on the capture component 230 to focus light on the capture chamber 201, so as to promote the algae in the capture chamber 201 to move downward into the enrichment chamber 202. After the focusing is completed after 16:00 p.m., the focusing component 260 is removed and the clustered cyanobacteria on the focusing component 260 are cleaned; the focusing period is 8 hours.

[0096] S3. After 16:00 in the afternoon of the first day, the adsorption component 280 is placed in the enrichment chamber 202 until 8:00 in the morning of the third day.

[0097] S4. Between 4:00 p.m. on the first day and 8:00 a.m. on the second day, install the shielding member 270 in the passage connecting the capture chamber 201 and the enrichment chamber 202 to shield the enrichment chamber 202 and prevent the blue-green algae accumulated in the enrichment chamber 202 from floating up. The shielding member 270 is removed outside the shielding period, cleaned, and kept ready for use.

[0098] S5. On the second day, repeat steps S2 and S4.

[0099] S6. At 8:00 a.m. on the third day, remove the adsorption member 280 from the enrichment chamber 202. After adsorption for a total of 40 hours, clean the adsorption member 280. During the cleaning process, air dry the adsorption member 280 in the sun for 3-5 hours before re-use.

[0100] S7. Repeat steps S2 to S6, with a cumulative processing time of 14 to 21 days.

[0101] S8. Start the ultraviolet irradiation component 290 to irradiate the enrichment chamber 202 with ultraviolet rays and replenish chlorophyll a into the enrichment chamber 202. The processing time of the ultraviolet irradiation component 290 is from 11:00 am to 1:00 pm. After the processing is completed, turn off the power supply 291.

[0102] After the treatment method of Example 1, the average cyanobacteria content in the water area was 3 μg / L (calculated based on chlorophyll a concentration). This shows that the present invention can significantly control the number of cyanobacteria.

[0103] In summary, compared with conventional technologies, the blue algae control device 10 of the present application has the following beneficial effects:

[0104] (1) High capture efficiency. This application cleverly utilizes the effects of wind, waves, and light on the horizontal and vertical movement of cyanobacteria, and the special structural shape of the device to achieve efficient capture of cyanobacteria groups.

[0105] (2) Good treatment effect. This application combines the use of ultraviolet light 293 radiation and the adsorption of activated carbon or biochar, and the addition of chlorophyll will enhance the photodegradation efficiency of algal toxins, achieving efficient and complete photodegradation. At the same time, it also avoids the disadvantage of conventional photodegradation producing a large number of potentially toxic isomer products, resulting in a better treatment effect.

[0106] (3) Greater flexibility. The algae capture device of the present application can be moved to the desired water body at any time as needed, which is more flexible and easy to install and disassemble.

[0107] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0108] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0109] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A cyanobacteria control device, characterized in that: The invention comprises a flow guiding mechanism and an algae capturing mechanism, wherein the flow guiding mechanism has a flow guiding channel, the algae capturing mechanism comprises a capturing component, a magnetizing component, a filtering component, a focusing component, a shielding component, an adsorption component and an ultraviolet irradiation component, the capturing component comprises a capturing chamber and an enrichment chamber that are connected to each other, the capturing chamber is located above the enrichment chamber, the capturing component is provided with a water inlet and a water outlet connected to the capturing chamber, the water inlet is connected to the flow guiding channel, the filtering component is installed at the water outlet, and when installed, the capturing chamber is arranged in the water body to be treated and the water inlet is located above the enrichment chamber. Below the liquid surface, the water outlet is close to the bottom mud layer of the water body to be treated, the enrichment chamber is buried in the bottom mud layer, the magnetization component is arranged at the water inlet to magnetize the algae in the water body to be treated, the focusing component is detachably connected to the capture component to focus light on the capture chamber, the shielding component is detachably connected to the capture component to close or open the channel between the capture chamber and the enrichment chamber, the adsorption component is detachably arranged in the enrichment chamber to adsorb cyanobacteria in the enrichment chamber, and the ultraviolet irradiation component is installed in the enrichment chamber.

2. The cyanobacteria control device according to claim 1, characterized in that: The diversion channel includes a first end and an opposite second end, wherein the opening size of the first end is larger than the opening size of the second end, and the second end is connected to the capture component to communicate with the water inlet nozzle.

3. The cyanobacteria control device according to claim 2, characterized in that: The opening size of the first end portion of the guide channel gradually increases from a side close to the first end portion to a side far away from the first end portion, so that the first end portion is trumpet-shaped.

4. The cyanobacteria control device according to any one of claims 1 to 3, characterized in that: The size of the water inlet gradually increases from the outer layer to the inner layer of the capture chamber; And / or, the size of the water outlet gradually increases from the outer layer to the inner layer of the capture chamber.

5. The cyanobacteria control device according to any one of claims 1 to 3, characterized in that: The flow guiding mechanism has buoyancy; And / or, the magnetized component includes a first magnet and a second magnet, the first magnet and the second magnet are respectively installed on both sides of the water inlet nozzle, and the magnetic properties of the first magnet and the second magnet are opposite; And / or, the filter component is a filter mesh.

6. The cyanobacteria control device according to any one of claims 1 to 3, characterized in that: The focusing component is a convex lens. When in use, the focusing component is installed on the top of the capturing component to converge the light in the capturing chamber to enhance the light intensity.

7. The cyanobacteria control device according to any one of claims 1 to 3, characterized in that: The shielding component includes a shielding plate and a mounting clip, the mounting clip is installed on the inner wall of the channel connecting the capture chamber and the enrichment chamber, and the shielding plate is detachably connected to the mounting clip to close or open the channel connecting the capture chamber and the enrichment chamber.

8. The cyanobacteria control device according to any one of claims 1 to 3, characterized in that: The adsorption component includes activated carbon and / or biochar, and the adsorption component can be moved into or removed from the enrichment chamber.

9. The cyanobacteria control device according to any one of claims 1 to 3, characterized in that: The size of the capture chamber gradually decreases from one end away from the enrichment chamber to one end connected to the enrichment chamber, and the size of the enrichment chamber gradually decreases from one end away from the capture chamber to one end connected to the capture chamber.

10. A method for controlling cyanobacteria, characterized in that: Using the cyanobacteria control device according to any one of claims 1 to 9 comprises the following steps: S1. Installing a cyanobacteria control device in a water body to be treated, controlling a diversion mechanism to be located at the liquid surface to capture algae, a water inlet on a capture chamber to be located below the liquid surface, and a water outlet close to the bottom mud layer of the water body to be treated, and burying an enrichment chamber in the bottom mud layer with the top of the enrichment chamber below the bottom mud layer surface; utilizing wind and wave disturbances, the diversion mechanism collects wastewater containing cyanobacteria from the surface layer of the water body to be treated, magnetizes the wastewater by a magnetizing component at the water inlet, and then enters the capture chamber and the enrichment chamber. The wastewater enters through the water inlet and is discharged through the water outlet, repeating the cycle. S2. During a first predetermined time period on day N, a light-concentrating member is installed on the capture member to concentrate light in the capture chamber, thereby causing the algae in the capture chamber to move downward into the enrichment chamber. After light concentration is completed, the light-concentrating member is removed and the aggregated cyanobacteria on the light-concentrating member is cleaned; S3, after a first preset time point on day N, placing the adsorption component in the enrichment chamber until a second preset time point on day N+2; S4. During a second predetermined time period from day N to day N+1, a shielding member is installed in the passage between the capture chamber and the enrichment chamber to shield the enrichment chamber and prevent the cyanobacteria accumulated in the enrichment chamber from floating up. After S5 and S4 are completed, during a first predetermined time period on day N+1, a focusing component is installed on the capture component to focus light on the capture chamber, thereby causing the algae in the capture chamber to move downward into the enrichment chamber. After the focusing is completed, the focusing component is removed and the aggregated cyanobacteria on the focusing component are cleaned. During a second predetermined time period from day N+1 to day N+2, a shielding component is installed on the passage between the capture chamber and the enrichment chamber to shield the enrichment chamber and prevent the cyanobacteria enriched in the enrichment chamber from floating up. S6. At a second preset time point on day N+2, removing the adsorption component from the enrichment chamber; S7, repeat steps S2 to S6, the cumulative processing time is 14 days to 21 days; and S8. After S7 is completed, start the ultraviolet irradiation component to irradiate the enrichment chamber with ultraviolet rays and replenish chlorophyll a into the enrichment chamber.

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