An efficient air flotation separation platform for aquatic algae water

Abstract

The present invention discloses an on-water high-efficiency flotation separation platform for algae and water, comprising a carrier ship, wherein the bow of the carrier ship is provided with a blue algae extraction pump and a lifting platform, the stern of the carrier ship is provided with an algae mud storage bin and an algae mud delivery pump, and the top of the carrier ship is provided with an air flotation device body; the air flotation device body is provided with an air flotation separation tank and a spiral dehydrator; the air flotation separation tank is provided with a flocculation stirring box, a dissolved air mixing box, an algae mud separation box and an algae storage chamber. The present invention realizes the high-efficiency separation of algae and water to form algae mud through the synergistic effect of components such as a flocculation stirring box and a dissolved air mixing box, and a large number of micro-nano bubbles generated by the mixing of dissolved air water and algae water can effectively improve the removal rate of blue algae and suspended solids in water bodies, and has a significant effect on purifying water bodies. At the same time, the spiral dehydrator further dehydrates the separated algae slurry, so that the algae mud is easy to store and subsequently dispose of, and the entire treatment process is closely connected, which greatly improves the treatment efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of environmental protection equipment, and particularly to an efficient water-based algae-water air flotation separation platform. Background Art

[0002] When dealing with complex cyanobacteria pollution problems, existing cyanobacteria treatment devices have exposed a series of problems that urgently need to be solved. In terms of functional design, most devices only focus on a single link, such as simple salvage or preliminary separation, and cannot form a comprehensive and coherent treatment process. This makes it difficult to meet the different requirements at each stage of the cyanobacteria treatment process in practical applications, resulting in a significant reduction in the treatment effect.

[0003] In terms of the treatment process, from algae-water collection to the final tail water discharge, there is a lack of effective coordination and integration among various links. Algae-water collection equipment often cannot adapt to different water environments and algae-water distribution conditions, resulting in low collection efficiency and difficulty in ensuring the representativeness of the collected algae-water. In the links of algal sludge treatment and tail water disposal, due to the lack of an integrated plan, problems such as incomplete treatment, resource waste, and secondary pollution often occur.

[0004] In summary, researching and developing an efficient water-based algae-water air flotation separation platform that can overcome the above problems and achieve integrated and efficient operation from algae-water collection to tail water disposal has important practical significance for solving cyanobacteria pollution problems and protecting the water ecological environment. Summary of the Invention

[0005] In order to solve the problems mentioned in the above background art, the present invention provides an efficient water-based algae-water air flotation separation platform.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] An efficient water-based algae-water air flotation separation platform, comprising a carrier ship, a cyanobacteria extraction pump and a lifting platform are arranged at the bow of the carrier ship, an algal sludge storage bin and an algal sludge transfer pump are arranged at the stern of the carrier ship, and an air flotation device main body is arranged at the top of the carrier ship;

[0008] An air flotation separation tank and a spiral press are arranged inside the air flotation device main body;

[0009] A flocculation stirring tank, a dissolved air mixing tank, an algal sludge separation tank and an algae storage chamber are arranged inside the air flotation separation tank;

[0010] A scraping algae mechanism is installed on the air flotation separation tank;

[0011] The algae scraping mechanism includes two driving rotating shafts arranged in parallel. One of the driving rotating shafts is driven to rotate by a third rotating motor. Synchronous wheels are provided at both ends of the driving rotating shaft. A second synchronous belt is installed between the outer sides of the two synchronous wheels on the same side. A plurality of scraping plates are fixed between the two second synchronous belts, and the scraping plates are equidistantly distributed on the second synchronous belt.

[0012] Preferably, a hose is connected to the water inlet end of the cyanobacteria suction pump. Filter mesh holes are provided on the lifting platform. One end of the hose away from the cyanobacteria suction pump extends below the lifting platform and communicates with the filter mesh holes.

[0013] Preferably, a second rotating motor is fixed above the lifting platform through a bracket. A first cleaner is fixed to the output shaft of the second rotating motor. The first cleaner corresponds to the position of the filter mesh holes and contacts the top end of the lifting platform.

[0014] Preferably, the two sides of the lifting platform are respectively hinged to the carrier ship through two parallel connecting rods. A strip-shaped sliding opening is provided on the upper connecting rod.

[0015] Preferably, an electric hoist is fixed above the lifting platform through a bracket. A hook is connected to the output end of the electric hoist. A hanging ring is movably installed in the strip-shaped sliding opening, and the hanging ring is hung on the hook.

[0016] Preferably, cyanobacteria enclosures are connected to both sides of the lifting platform. The cyanobacteria enclosures are floating net-like structures, and the cyanobacteria enclosures are pulled to move by a remotely controlled enclosure gathering ship.

[0017] Preferably, the scraping plate includes a fixed part and a rotating part. An automatic switch is connected to the installation rotating shaft of the rotating part. When the scraping plate faces downwards, the rotating part switches to a vertical state. When the scraping plate faces upwards, the rotating part switches to a horizontal state.

[0018] Preferably, a second cleaner is fixed above the algae scraping mechanism inside the air flotation separation tank.

[0019] Preferably, the automatic switch includes a sleeve fixed to the installation rotating shaft of the rotating part. A spiral limit groove is provided on the outer side of the sleeve. One end of the sleeve away from the rotating part is elastically and movably installed with a telescopic rotating shaft. A hemispherical trigger is fixed to the end of the telescopic rotating shaft away from the sleeve. A limit guiding rod is fixed to the side of the hemispherical trigger close to the fixed part. A limit rod is fixed to the side of the limit guiding rod close to the sleeve. One end of the limit rod extends into the spiral limit groove. A limit sliding rail is fixed to the fixed part, and the limit sliding rail is horizontally movably matched with the limit guiding rod.

[0020] Preferably, pushing components are fixed to the inner walls on both sides of the air flotation separation tank. The pushing components are U-shaped structures.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. Efficient algae-water separation and treatment: Through the synergistic effect of components such as the flocculation stirring tank and the dissolved air mixing tank, efficient separation of algae-water is achieved to form algal slurry. Moreover, a large number of micro-nano bubbles generated by the mixing of dissolved air water and algae-water can effectively improve the removal rate of cyanobacteria and suspended solids in water, and the water purification effect is remarkable. At the same time, the spiral press filter further dehydrates the separated algal slurry, making the algal sludge convenient for storage and subsequent disposal. The entire treatment process is closely coherent, greatly improving the treatment efficiency.

[0023] 2. Flexible adaptation to various working conditions: The design of the carrier ship enables the device to move flexibly in different waters and can quickly reach the cyanobacteria outbreak area for treatment, effectively solving problems such as the difficulty of the magnetic capture ship moving in the nearshore waters. The main body of the air flotation device can be detachably installed on the carrier ship and is equipped with hydraulic legs, which can not only operate on water but also be used independently on the shore and is convenient for leveling and transportation, adapting to diverse working scenarios and requirements.

[0024] 3. Optimization of the algae-water collection process: The cyanobacteria suction pump is paired with a lifting platform with filter mesh holes, which can pre-filter large particle impurities from the suctioned algae-water, avoiding the influence of impurities on subsequent treatment links. At the same time, the height of the lifting platform can be adjusted by an electric hoist, and it can suck according to the change of algae-water concentration at different depths, effectively improving the algae-water collection efficiency and reducing the phenomenon of empty suction. In addition, the remotely controlled enclosure ship pulls the cyanobacteria enclosure grid to gather and enrich cyanobacteria, further enhancing the collection ability of high-concentration algae-water.

[0025] 4. Enhancement of the algae scraping function and cleaning and maintenance: The algae scraping mechanism is driven by a rotating motor to drive the scraper to move in a cycle to scrape algae, ensuring continuous cleaning of floating cyanobacteria. The unique automatic switching structure of the scraper can effectively reduce the space occupation in different position states, and the surface residual cyanobacteria can be automatically cleaned by a cleaner to prevent secondary pollution, improving the reliability and persistence of algae scraping.

[0026] 5. Integrated multi-functional integration: It integrates multi-functions such as algae-water extraction, cyanobacteria enclosure, air flotation separation, sludge pressure filtration, waterborne carrier platform and power supply system, avoiding the complexity of multi-device collaboration, realizing the full-process operation of cyanobacteria emergency treatment, improving the practicality and convenience of the equipment, and having high social use value and application prospects. Brief Description of the Drawings

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0028] Figure 1 Stereogram of the carrier ship of the present invention;

[0029] Figure 2 Top view of the present invention;

[0030] Figure 3 First perspective enlarged detail view of the position of the lifting platform of the present invention;

[0031] Figure 4 Second perspective enlarged detail view of the position of the lifting platform of the present invention;

[0032] Figure 5 Third perspective enlarged detail view of the position of the lifting platform of the present invention;

[0033] Figure 6 Internal top view of the main body of the air flotation device of the present invention;

[0034] Figure 7 Front view of the air flotation device of the present invention;

[0035] Figure 8 Stereogram of the air flotation separation tank of the present invention;

[0036] Figure 9 Front perspective sectional view of the air flotation separation tank of the present invention;

[0037] Figure 10 Stereo sectional view of the air flotation separation tank of the present invention;

[0038] Figure 11 Schematic structural diagram of the stirring mechanism of the present invention;

[0039] Figure 12 First perspective stereogram of the algae scraping mechanism of the present invention;

[0040] Figure 13 Front view of the algae scraping mechanism of the present invention;

[0041] Figure 14 Second perspective stereogram of the algae scraping mechanism of the present invention;

[0042] Figure 15 For Figure 14 Enlarged detail view at position A in

[0043] Figure 16Schematic structural diagram of the automatic switch of the present invention;

[0044] In the figure: 1, carrier ship; 2, main body of air flotation device; 201, air flotation separation tank; 202, diesel generator; 203, electric control cabinet; 204, air compressor; 205, screw press dehydrator; 206, flocculant preparation tank; 207, dissolved air tank; 209, flocculation stirring tank; 210, dissolved air release device; 211, dissolved air mixing tank; 212, algal sludge separation tank; 213, algal storage room; 214, flocculant delivery pipeline; 215, coagulant aid delivery pipeline; 216, water inlet pipe; 217, annular distribution pipe; 218, hydraulic leg; 219, tail water discharge pipe; 220, algal slurry discharge pipe; 3, blue-green algae suction pump; 301, hose; 4, lifting platform; 401, connecting rod; 402, strip-shaped sliding opening; 403, electric hoist; 404, hook; 405, hanging ring; 406, filter mesh hole; 407, second rotating motor; 408, first cleaner; 5, remotely controlled enclosure ship; 501, blue-green algae enclosure; 6, algal sludge storage bin; 601, algal sludge delivery pump; 7, algal scraping mechanism; 701, driving rotating shaft; 702, third rotating motor; 703, synchronous pulley; 704, second synchronous belt; 8, stirring mechanism; 801, first stirring shaft; 802, second stirring shaft; 803, first synchronous belt; 804, first bevel gear; 805, driving shaft; 806, second bevel gear; 807, first rotating motor; 9, scraper; 901, fixing part; 902, rotating part; 903, spiral limiting groove; 904, telescopic rotating shaft; 905, hemispherical trigger; 906, limiting guide rod; 907, limiting rod; 908, limiting slide rail; 909, sleeve; 910, pushing component; 911, second cleaner. Specific embodiments

[0045] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. Embodiment 1

[0046] Refer to Figure 1-16 , a high-efficiency air flotation separation platform for algal water on water, including a carrier ship 1, a blue-green algae suction pump 3 and a lifting platform 4 are arranged at the bow of the carrier ship 1, an algal sludge storage bin 6 and an algal sludge delivery pump 601 are arranged at the stern of the carrier ship 1, and the top of the carrier ship 1 is provided with a main body 2 of the air flotation device;

[0047] Inside the main body 2 of the air flotation device, there are an air flotation separation tank 201 and a spiral press 205. The relatively concentrated algal slurry separated after the treatment in the air flotation separation tank 201 is further dehydrated by the spiral press 205 to form algal sludge.

[0048] Inside the air flotation separation tank 201, there are a flocculation stirring tank 209, a dissolved air mixing tank 211, an algal sludge separation tank 212 and an algal storage chamber 213. Inside the main body 2 of the air flotation device, there are also a diesel generator 202, an electric control cabinet 203, an air compressor 204, a dissolved air tank 207 and a flocculant preparation tank 206. The diesel generator 202 is used for power generation to supply the electrical equipment on the ship. The flocculant preparation tank 206 is provided with a flocculant and a coagulant aid, which are respectively transported into the flocculation stirring tank 209 through a flocculant conveying pipeline 214 and a coagulant aid conveying pipeline 215. An inlet water pipe 216, a tail water discharge pipe 219 and an algal slurry discharge pipe 220 are respectively installed on the air flotation separation tank 201. The inlet water pipe 216 extends into the flocculation stirring tank 209 and is connected with an annular distribution pipe 217. The algal slurry discharge pipe 220 is communicated with the algal storage chamber 213 and is connected with the spiral press 205 through a conveying pipeline. The algal sludge after the dehydration treatment by the spiral press 205 is stored in the algal sludge storage bin 6, and the algal sludge can be pumped out through an algal sludge conveying pump 601 and transported to an onshore tanker for transportation and treatment.

[0049] During operation, the low-concentration algal water is sucked by a blue-green algae suction pump 3 and enters the flocculation stirring tank 209 through the inlet water pipe 216. After the algal water is mixed with the flocculant and the coagulant aid, the blue-green algae are quickly formed into flocculent alum flowers through stirring, and then flow into the dissolved air mixing tank 211, where they are mixed with the dissolved air water from the dissolved air tank 207 to generate a large number of micro-nano bubbles, which adhere to the suspended substances such as blue-green algae flocs and float to the water surface, thus realizing the separation of algae and water.

[0050] A scraping algae mechanism 7 is installed on the air flotation separation tank 201. Through the scraping algae mechanism 7, the floating blue-green algae can be scraped into the algal storage chamber 213 for temporary storage. When the algal storage chamber 213 is full, it is transported to the spiral press 205 for further dehydration treatment.

[0051] The main body 2 of the air flotation device is detachably installed on the carrier ship 1, and a hydraulic leg 218 is installed on the main body 2 of the air flotation device. The main body 2 of the air flotation device is an integral container, which can not only be used on the ship, but also be hoisted alone on the shore to treat blue-green algae, realizing the dual functions of water and land use. The hydraulic leg 218 can lift the whole main body 2 of the air flotation device, which is convenient for leveling and transportation on the shore.

[0052] Among them, the air compressor 204 generates high-pressure gas and transports it into the dissolved air tank 207, where dissolved air water is generated. The dissolved air water is transported into the dissolved air mixing tank 211 through a dissolved air release device 210. Embodiment 2

[0053] Reference Figure 1-16 , the difference between this embodiment and Embodiment 1 is that a stirring mechanism 8 is provided in the flocculation stirring tank 209. The stirring mechanism 8 includes a first stirring shaft 801 and a second stirring shaft 802. The first stirring shaft 801 and the second stirring shaft 802 are synchronously driven by a first synchronous belt 803. A first bevel gear 804 is fixed outside the second stirring shaft 802. A first rotating motor 807 is fixed outside the air flotation separation tank 201. A driving shaft 805 is fixed to the output shaft of the first rotating motor 807. A second bevel gear 806 is fixed to one end of the driving shaft 805. The second bevel gear 806 meshes with the first bevel gear 804;

[0054] Turning on the first rotating motor 807 can drive the driving shaft 805 and the second bevel gear 806 to rotate. Then, through the meshing of the second bevel gear 806 and the first bevel gear 804, the second stirring shaft 802 is driven to rotate. Then, through the first synchronous belt 803, the first stirring shaft 801 is also driven to rotate, thereby stirring the liquid, accelerating the mixing, and improving the flocculation effect. Embodiment 3

[0055] Reference Figure 1-16 , the difference between this embodiment and Embodiment 1 is that a hose 301 is connected to the water inlet end of the blue-green algae suction pump 3. A filter screen hole 406 is provided on the lifting platform 4. One end of the hose 301 away from the blue-green algae suction pump 3 extends below the lifting platform 4 and communicates with the filter screen hole 406;

[0056] Through the blue-green algae suction pump 3, the algae water above the lifting platform 4 can be suctioned. The algae water can be filtered through the filter screen hole 406 first to filter out large particle impurities in the water.

[0057] Wherein, a second rotating motor 407 is fixed above the lifting platform 4 through a bracket. A first cleaner 408 is fixed to the output shaft of the second rotating motor 407. The first cleaner 408 corresponds to the position of the filter screen hole 406, and the first cleaner 408 contacts the top end of the lifting platform 4;

[0058] Through the second rotating motor 407, the first cleaner 408 can be driven to rotate and move relative to the lifting platform 4, so as to scrape off the impurities blocking the top end of the filter screen hole 406, achieving the purpose of automatically cleaning the impurities and improving the suction efficiency.

[0059] Among them, both sides of the lifting platform 4 are hinged to the carrier ship 1 through two mutually parallel connecting rods 401. A strip-shaped sliding opening 402 is provided on the upper connecting rod 401. An electric hoist 403 is fixed above the lifting platform 4 through a bracket. The output end of the electric hoist 403 is connected with a hook 404. A hanging ring 405 is movably installed in the strip-shaped sliding opening 402. The hanging ring 405 is hung on the hook 404. By driving the hook 404 to lift and move through the electric hoist 403, the lifting platform 4 can be lifted. Due to the parallelogram connecting rod mechanism between both sides of the lifting platform 4 and the carrier ship 1, it can ensure that the lifting platform 4 remains horizontal during the lifting process. Since after pumping for a period of time, the concentration of algal water at a specific depth will drop sharply, resulting in the phenomenon of empty pumping. At this time, the height of the lifting platform 4 can be changed to pump algal water at different depths, improving the pumping efficiency. Example 4

[0060] Refer to Figure 1-16 , the difference between this embodiment and Embodiment 3 is that both sides of the lifting platform 4 are connected with cyanobacteria enclosures 501. The cyanobacteria enclosures 501 are floating net structures, and the cyanobacteria enclosures 501 are pulled to move by a remotely controlled gathering ship 5. By using the cyanobacteria enclosures 501 to gather cyanobacteria in a smaller range, the effect of enriching the concentration of algal water is achieved, and then centralized pumping is carried out, which can effectively improve the efficiency of pumping cyanobacteria. Example 5

[0061] Refer to Figure 1-16 , the difference between this embodiment and Embodiment 1 is that the algae scraping mechanism 7 includes two mutually parallel driving rotating shafts 701. One of the driving rotating shafts 701 is driven to rotate by a third rotating motor 702. Synchronous wheels 703 are provided at both ends of the driving rotating shaft 701. A second synchronous belt 704 is installed between the outer sides of the two synchronous wheels 703 on the same side. A plurality of scraping plates 9 are fixed between the two second synchronous belts 704. The scraping plates 9 are equidistantly distributed on the second synchronous belt 704;

[0062] The third rotating motor 702 can drive the second synchronous belt 704 to move cyclically, thereby driving the scraping plates 9 to move cyclically. When the scraping plates 9 face downwards, the lower edges of the scraping plates 9 are immersed in the water, so that the cyanobacteria floating on the water surface can be scraped towards the algae storage chamber 213, and continuous algae scraping can be carried out. Example 6

[0063] Refer to Figure 1-16The difference between this embodiment and embodiment 5 is that the scraper 9 includes a fixed part 901 and a rotating part 902, and an automatic switch is connected to the mounting shaft of the rotating part 902. When the scraper 9 is facing downward, the rotating part 902 switches to a vertical state, and when the scraper 9 is facing upward, the rotating part 902 switches to a horizontal state. Since the scraper 9 has the function of automatic bending, when the scraper 9 is running to the upward state, on the one hand, the height is lower and will not protrude to the outside of the flotation separation tank 201, and the occupied space is lower. On the other hand, the interior of the flotation separation tank 201 is located directly above the scraping algae mechanism 7 and a second cleaner 911 is fixed. When the scraper 9 is facing upward and moving, it can pass under the second cleaner 911, so that the surface of the scraper 9 can be automatically cleaned by the second cleaner 911, and the cyanobacteria remaining on the surface of the scraper 9 can be scraped off to prevent the residual cyanobacteria from being brought back into the water.

[0064] In order to achieve the purpose of automatically switching between two states, the automatic switch includes a sleeve 909 fixed on the mounting shaft of the rotating part 902, a spiral limiting groove 903 is opened on the outer side of the sleeve 909, and a telescopic rotating shaft 904 is elastically and movably installed on the end of the sleeve 909 away from the rotating part 902, and a hemispherical trigger member 905 is fixed on the end of the telescopic rotating shaft 904 away from the sleeve 909, and a limiting guide rod 906 is fixed on the side of the hemispherical trigger member 905 close to the fixed part 901, and a limiting rod 907 is fixed on the side of the limiting guide rod 906 close to the sleeve 909, and one end of the limiting rod 907 extends into the spiral limiting groove 903, and a limiting slide rail 908 is fixed on the fixed part 901, and the limiting slide rail 908 and the limiting guide rod 906 are horizontally matched, and a pushing component 910 is fixed on the inner walls of both sides of the air flotation separation tank 201, and the pushing component 910 is a U-shaped structure.

[0065] When the scraper 9 is running to the upward state, the pushing component 910 and the hemispherical trigger member 905 are offset and do not contact each other. At this time, the spring inside the sleeve 909 pushes the telescopic shaft 904 away. Figure 16 In this state, due to the elastic force of the spring, the rotating part 902 will be kept rotating to a horizontal state. When the scraper 9 runs to a downward state, it is in Figure 15 State, at this time, due to the squeezing of the hemispherical trigger member 905 by the pushing component 910, the telescopic rotating shaft 904 moves toward the sleeve 909, and due to the limiting effect of the limiting slide rail 908, the hemispherical trigger member 905 cannot rotate relative to the fixed part 901, and one end of the limiting rod 907 extends into the spiral limiting groove 903. Therefore, the limiting rod 907 can push the sleeve 909 to rotate relative to the fixed part 901 when moving horizontally, and then drive the rotating part 902 to rotate to a vertical state, so that algae can be scraped off, thereby achieving the purpose of automatic switching state.

[0066] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 construed as a limitation to the present invention.

[0067] In the present invention, unless otherwise clearly specified and defined, the terms "set", "install", "connect", "couple", "fix", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] The control mode of the present invention is automatically controlled by a controller. The control circuit of the controller can be realized by simple programming by those skilled in the art. The provision of power also belongs to the common general knowledge in the art, and the present invention is mainly used to protect mechanical devices, so the control mode and circuit connection of the present invention will not be further explained in detail.

[0069] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. An on-water high-efficiency flotation separation platform for algae and water, comprising a carrier ship (1), characterized in that: The bow of the carrier ship (1) is provided with a blue algae extraction pump (3) and a lifting platform (4), the stern of the carrier ship (1) is provided with an algae mud storage bin (6) and an algae mud delivery pump (601), and the top of the carrier ship (1) is provided with an air flotation device body (2); An air flotation separation tank (201) and a screw press dehydrator (205) are provided inside the air flotation device body (2); The air flotation separation tank (201) is provided with a flocculation stirring box (209), an air dissolving mixing box (211), an algae mud separation box (212) and an algae storage chamber (213) inside; The air flotation separation tank (201) is provided with an algae scraping mechanism (7); The algae scraping mechanism (7) comprises two driving shafts (701) arranged parallel to each other, one of the driving shafts (701) being driven to rotate by a third rotating motor (702), both ends of the driving shaft (701) being provided with synchronous wheels (703), a second synchronous belt (704) being installed between the outer sides of the two synchronous wheels (703) located on the same side, a plurality of scrapers (9) being fixed between the two second synchronous belts (704), and the scrapers (9) being evenly spaced on the second synchronous belt (704); The scraper (9) comprises a fixed portion (901) and a rotating portion (902); an automatic switch is connected to the mounting shaft of the rotating portion (902); when the scraper (9) is facing downward, the rotating portion (902) is switched to a vertical state; when the scraper (9) is facing upward, the rotating portion (902) is switched to a horizontal state; because the scraper (9) has an automatic bending function, when the scraper (9) is in an upward state, it will not protrude to the outside of the air flotation separation tank (201), thereby occupying less space; A second cleaning scraper (911) is fixed inside the air flotation separation tank (201) and located directly above the algae scraping mechanism (7); The automatic switch comprises a sleeve (909) fixed on the mounting shaft of the rotating part (902), a spiral limiting groove (903) is provided on the outer side of the sleeve (909), a telescopic rotating shaft (904) is elastically and movably mounted on one end of the sleeve (909) away from the rotating part (902), a hemispherical trigger member (905) is fixed on one end of the telescopic rotating shaft (904) away from the sleeve (909), a limiting guide rod (906) is fixed on the side of the hemispherical trigger member (905) close to the fixed part (901), a limiting rod (907) is fixed on the side of the limiting guide rod (906) close to the sleeve (909), one end of the limiting rod (907) extends into the spiral limiting groove (903), a limiting slide rail (908) is fixed on the fixed part (901), and the limiting slide rail (908) and the limiting guide rod (906) are horizontally movably matched; Pushing components (910) are fixed on both inner walls of the air flotation separation tank (201), and the pushing components (910) are U-shaped structures; When the scraper (9) is running to an upward state, the pushing component (910) and the hemispherical trigger member (905) are offset and do not come into contact with each other; when the scraper (9) is running to a downward state, the pushing component (910) presses the hemispherical trigger member (905).

2. The high-efficiency floating separation platform for algae-water on water according to claim 1, characterized in that: The water inlet end of the blue algae extraction pump (3) is connected to a hose (301), a filter mesh hole (406) is provided on the lifting platform (4), and one end of the hose (301) away from the blue algae extraction pump (3) extends to the bottom of the lifting platform (4) and is connected to the filter mesh hole (406).

3. The high-efficiency air flotation separation platform for algae-water on water according to claim 2, characterized in that: A second rotating motor (407) is fixed via a bracket directly above the lifting platform (4); a first cleaning scraper (408) is fixed to the output shaft of the second rotating motor (407); the first cleaning scraper (408) corresponds to the position of the filter mesh (406), and the first cleaning scraper (408) is in contact with the top of the lifting platform (4).

4. The high-efficiency floating separation platform for algae-water on water according to claim 3, characterized in that: The two sides of the lifting platform (4) are hinged to the carrier ship (1) via two connecting rods (401) arranged parallel to each other, and a strip-shaped sliding opening (402) is provided on the upper connecting rod (401).

5. The high-efficiency floating separation platform for algae-water on water according to claim 4, characterized in that: An electric hoist (403) is fixed via a bracket directly above the lifting platform (4); an output end of the electric hoist (403) is connected to a hook (404); a hanging ring (405) is movably installed in the strip-shaped sliding opening (402); and the hanging ring (405) is hung on the hook (404).

6. The high-efficiency floating separation platform for algae-water on water according to claim 5, characterized in that: Both sides of the lifting platform (4) are connected to a blue algae enclosure (501), the blue algae enclosure (501) is a floating mesh structure, and the blue algae enclosure (501) is moved by being pulled by a remote-controlled enclosure boat (5).

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