CN214881052U

CN214881052U - Blue algae flotation and dehydration device

Info

Publication number: CN214881052U
Application number: CN202120578902.9U
Authority: CN
Inventors: 钱盘生; 潘亚斌
Original assignee: JIANGSU JINSHAN ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD
Current assignee: JIANGSU JINSHAN ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD
Priority date: 2021-03-22
Filing date: 2021-03-22
Publication date: 2021-11-26
Anticipated expiration: 2031-03-22

Abstract

The utility model discloses a blue algae flotation and dehydration device, which comprises a flotation device, a spiral shell stacking machine and a working transfer platform which are arranged in sequence, the flotation device is including locating the flotation tank of lower part in the casing and dissolving the gas pitcher, be equipped with the perforation water distributor in the flotation tank, flotation tank upper portion symmetry is equipped with the buffering and looses the hydrophone, be equipped with the pressure relief device of symmetry between the buffering and loosing the hydrophone, locate the sediment machine of scraping at the top in the casing, scrape sediment machine lower part one side and install the scum groove, the scum groove has a sediment groove through the pipe connection, the sediment groove passes through the pipeline and links to each other with stacking screw machine feed inlet, be equipped with the algae mud pond under stacking the screw machine discharge gate, the distributing box is installed in proper order from a left side to the right side on the work transfer platform, the primary zone of squeezing, the buffer memory district, superhigh pressure squeezes dehydration district and algae mud ejection of compact district, the discharge side in algae mud ejection of compact district is equipped with mud separator in proper order, filter cloth belt cleaning device and hot air drying device. The utility model discloses a flotation treatment and multistage squeezing realize the innocent treatment and the high utilization of blue alga.

Description

Blue algae flotation and dehydration device

Technical Field

The utility model relates to a technical field is administered to the blue alga, concretely relates to blue alga flotation and dewatering device.

Background

With the development of the industrial society, the continuous enrichment of nutrient elements such as C, N, P in the water body can lead to the mass propagation of algae to form the water bloom phenomenon, and the range of the occurrence of the water bloom of the blue algae in the fresh water algae is the widest. Blue algae is the earliest photoautotroph on the earth, water is used as an electron donor, and solar energy is used for converting CO₂Reducing the organic carbon compound into an organic carbon compound and simultaneously releasing free oxygen; the cyanobacterial bloom is generated in 6-9 months, the algae float and form a green water body or thin layer with the water surface, the water body landscape is seriously damaged, and the odor is emitted. Blue algae propagate in large quantities and consume dissolved oxygen in water, so that other aquatic animals and plants die, the biological diversity of the water body is reduced, algal toxins can be generated, and the survival of human beings and other animals is directly threatened.

At present, the method for dealing with the large-scale blue algae outbreak mainly salvages the blue algae, meanwhile, the blue algae has abundant potential resources, contains a large amount of nutrient elements such as N, P and other available substances such as phycocyanin, and can be used as a biomass resource. However, due to the restriction of the current technical level, economic cost and other factors, most of the blue algae fished from the lake surface of China are separated by algae water to form algae cakes with relatively high water content, and then are transported out and then are incinerated or simply buried, and large-scale resource utilization is not carried out. Meanwhile, the deep dehydration and reduction are indispensable technical links for recycling the blue algae. As the content of organic matters in the cyanobacteria mud reaches 80-90%, and the extracellular capsule is in a gel state, the deep dehydration efficiency is seriously influenced, and a large amount of flocculating agent and coagulant aid are required to be added in order to achieve the deep dehydration in the prior art, the resource potential of the cyanobacteria mud is lost, and a large amount of pollutants are contained in the concentration in the deep dehydration, so that the treatment cost of the concentrated solution is extremely high.

In conclusion, a treatment device with low treatment cost and capable of dewatering and deeply drying the blue algae mud is urgently needed, and is the key to be solved urgently for realizing harmless and reduced blue algae and high-added-value recycling at present.

Disclosure of Invention

The utility model aims at providing a blue alga flotation and dewatering device which has low treatment cost, harmlessness, reduction treatment and high added value resource utilization aiming at the defects of the prior art.

The utility model adopts the technical scheme as follows:

a blue algae flotation and dehydration device comprises a flotation device, a spiral shell stacking machine and a working transfer platform, wherein the spiral shell stacking machine is arranged between the flotation device and the working transfer platform, the flotation device comprises a shell and a dissolved air tank, the lower part in the shell is provided with a flotation tank, a perforated water distribution pipe which is annular and radial is arranged in the flotation tank, the upper part of the flotation tank is symmetrically provided with a buffering water diffuser, symmetrical pressure relief devices are arranged between the buffering water diffusers, the inlet of each pressure relief device is connected with a dissolved air water branch pipe, the dissolved air water branch pipe is communicated with a rubber pipe, the inlet of the dissolved air tank is connected with a nano bubble pump through a pipeline, a water pipe which is connected with the outlet of the dissolved air tank is movably connected with the dissolved air water branch pipe, the top in the shell is provided with a slag scraping machine, one side of the lower part of the slag scraping machine is provided with a slag collecting groove through a pipeline, the slag collecting tank is connected with a feed inlet of the screw stacking machine through a pipeline, an algae mud tank is arranged under a discharge port of the screw stacking machine, an outlet of the algae mud tank is connected with an inlet of the algae mud pipeline pre-breaking wall device through a screw pump, a distributing tank, a primary squeezing area, a cache area, an ultrahigh pressure squeezing dehydration area and an algae mud discharging area are sequentially installed on the work transfer platform from left to right, a first filter cloth drum is arranged over the distributing tank, the algae mud pipeline pre-breaking wall device is connected with the first filter cloth drum through a mud distributing hose provided with an algae mud proportional valve, a drainage grid is arranged on the inner side of the distributing tank, the distributing tank is sequentially transferred into the primary squeezing area, the cache area, the ultrahigh pressure squeezing dehydration area and the algae mud discharging area through the work transfer platform, a hydraulic device is arranged over the primary squeezing area, and an ultrahigh pressure hydraulic device is arranged over the ultrahigh pressure squeezing dehydration area, be equipped with movable window on the lateral wall in algae mud ejection of compact district, be equipped with mud cloth separator, filter cloth belt cleaning device and hot air drying device towards movable window one side in proper order, be equipped with mud collecting hopper under mud cloth separator.

The buffer water distributor of the device is of a horn-shaped structure with repeated diameter change.

The perforated water distribution pipe of the device is connected with a storage tank for containing a natural polymer-based flocculant.

The algae mud pipeline of this device is broken wall device in advance for circular sealed metal cylinder, and this algae mud pipeline is broken wall device in advance inside being equipped with the mud groove and the conical diversion board of leading of circular shape squeezing hammer, chamber shape in proper order.

The first filter cloth drum of the device and the mud distributing hose provided with the algae mud proportional valve move back and forth in the same direction at the same time.

The distributing chute of the device is a square vertical metal cylinder, wherein the two sides of the distributing chute are movable side walls.

The bottom of the distributing groove of the device is provided with a pulley driven by a motor, and the pulley is arranged in a sliding rail matched with the work transferring platform.

The mud-cloth separating device comprises two groups of upper and lower guide cylinders, wherein one group of upper and lower guide cylinders guides the filter cloth in the algae mud discharging area into the filter cloth cleaning device, and the other group of upper and lower guide cylinders guides the cleaned filter cloth into the hot air drying device.

The bottom in the filter cloth cleaning device of the device is provided with a cleaning pump facing the filter cloth.

A second filter cloth winding drum is arranged in the hot air drying device of the device, and a heating dryer is arranged at the bottom in the hot air drying device opposite to the second filter cloth winding drum.

The beneficial effects of the utility model are that:

(1) the utility model adopts the flotation device to treat the salvaged algae water through flotation to form a compact scum layer, the flotation device is vertical flow type air flotation, raw water added with flocculating agent flows out to the buffering water disperser from the perforated water distributor, the raw water stably and slowly rises after being decompressed by the buffering water disperser, and algae flocs in the raw water can stay in the water for a longer time after colliding with micro-nano bubbles generated by a nano-bubble pump, thereby improving the separation effect of the algae residues and the water body;

(2) the utility model discloses the thin layer cloth of well marine alga forms, squeeze for the first time, the buffer memory, secondary superhigh pressure squeezes and the ejection of compact all goes on in same distributing groove, and the distributing groove bottom is installed in the slide rail of work transfer platform through the pulley, in order in proper order will accomplish the distributing groove translation of process to every workspace in proper order, the distributing groove after the ejection of compact is under translating to first filter cloth reel, and is gone round and round, has like this that area is little, degree of automation is high, and the security performance is good and need not to use the advantage that the driving forwarded the distributing groove;

(3) the utility model discloses the well elementary district and the superhigh pressure that squeezes of squeezing is distinguished for algae mud no longer adds auxiliary agent at the in-process that squeezes twice, and algae mud moisture content after squeezing is low, does not destroy the composition structure of algae mud, makes algae mud obtain the biggest resource utilization, and the discharge pollution degree after squeezing is little moreover, and the treatment cost is low.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a top view of the present invention;

in the figure 1, a screw stacking machine; 2. an algae mud pond; 3. a screw pump; 4. a pre-wall breaking device for the algae mud pipeline; 5. a algae mud proportional valve; 6. a first filter cloth drum; 7. a second filter cloth drum; 8. a distributing chute; 9. a working transfer platform; 10. a hydraulic device; 11. a primary pressing zone; 12. a buffer area; 13. an ultra-high pressure hydraulic device; 14. an ultra-high pressure press dewatering zone; 15. an algae mud discharging area; 16. a mud-cloth separating device; 17. a filter cloth cleaning device; 18. cleaning the pump; 19. a hot air drying device; 20. heating the dryer; 21. a drainage grid; 22. a mud collection hopper; 23. a buffer water diffuser; 24. a pressure relief device; 25. a slag scraper; 26. a scum trough; 27. a slag collecting groove; 28. a nano bubble pump; 29. a dissolved air tank; 30. perforating a water distribution pipe; 31. a dissolved gas water branch pipe; 32. a rubber tube; 33. a flotation device; 34. a housing; 35. a flotation cell.

Detailed Description

The invention will be further described with reference to the accompanying drawings:

as shown in fig. 1-2, the utility model discloses it includes the flotation device 33 of vertical flow air supporting, fold spiral shell machine 1 and work and transfer platform 9, it sets up between flotation device 33 and work and transfer platform 9 to fold spiral shell machine 1, this flotation device 33 includes casing 34 and dissolves gas pitcher 29, lower part in the casing 34 is equipped with flotation cell 35, be equipped with in the flotation cell 35 and be annular radial perforation water distributor 30, wherein be connected with the storage tank of dress natural polymer base flocculating agent on the perforation water distributor 30, make the raw water that gets into perforation water distributor 30 add natural polymer base flocculating agent, so not only reduce the quantity of flocculating agent, still do not destroy the nature of algae mud in the blue alga.

Buffer water diffusers 23 with repeated diameter-changing horn-shaped structures are symmetrically arranged at the upper part of the flotation tank 35, symmetrical pressure release devices 24 are arranged between the buffer water diffusers 23, the inlet of each pressure release device 24 is connected with a dissolved air water branch pipe 31, and the dissolved air water branch pipe 31 is communicated with a rubber pipe 32 for cleaning the pressure release devices 24 on line; the inlet of the dissolved air tank 29 is connected with the nano bubble pump 28 through a pipeline, and the water pipe connected with the outlet of the dissolved air tank 29 is movably connected with the dissolved air water branch pipe 31, so that the pressure relief device 24 with blockage can be taken out and cleaned independently under the condition that the operation of other pressure relief devices 24 is not influenced. A slag scraper 25 is arranged at the top in the shell 34, a scum groove 26 is arranged at one side of the lower part of the slag scraper 25, the scum groove 26 is connected with a scum collecting groove 27 through a pipeline, the scum collecting groove 27 is connected with a feed inlet of the screw stacking machine 1 through a pipeline, raw water added with a natural polymer-based flocculating agent flows out to a buffering water disperser 23 through a perforated water distribution pipe 30, the raw water is decompressed by a pressure release device 24 between the buffering water dispersers 23 and then stably and slowly rises in vertical flow type air floatation, algae flocs in the raw water collide with micro-nano bubbles generated by a nano bubble pump, and the wrapping and growing copolymer rises due to smaller mass and volume; conventional dissolved air bubble is produced the back in aqueous, the dwell time is short, can rise to the surface of water soon and break and disappear, and micro-nano bubble has tens seconds or even reaches the several minutes by producing to finally breaking to disappear in aqueous, so can very big improvement algae sediment water flotation separation effect, the algae floc that leads to generating forms dross layer thickness and constantly increases, concentrate, and produce the algae sediment that the moisture content is about 95%, when the algae sediment slowly floats to 34 tops of casing, open and scrape sediment machine 25 and scrape the algae sediment in scum groove 26, in the collection is full, get into collection sediment groove 27 through the pipeline, collection sediment groove 27 accessible extraction pump carries the algae sediment to stack among the snail machine 1 and dewaters to the moisture content and is about 90%.

This fold 1 discharge gate of spiral shell machine and be equipped with algae mud pond 2 under, the export in algae mud pond 2 is passed through screw pump 3 and is linked to each other with the import of algae mud pipeline broken wall device 4 in advance, wherein algae mud pipeline broken wall device 4 in advance is circular sealed metal cylinder, 4 inside circular shape that are equipped with of algae mud pipeline broken wall device in advance squeezes the hammer, the mud guide groove and the conical diversion board of chamber shape, the algae sediment after making the dehydration is in proper order through squeezing, the extrusion and shearing, make the algae sediment in algae mud pipeline broken wall device 4 in advance rise the release through pressure is transient, rise the process back of release again, the structure of algae sediment suffers destruction, algae mud becomes loose, the structure of flocculation algae mud colloid and the cohesion between the surface adsorption water have tentatively been destroyed, thereby most clearance water and partial capillary water of algae mud have been released, the effect that follow-up degree of depth dehydration squeezes has been improved.

The work of this device is transferred platform 9 and is gone up from a left side to the right side and install distributing trough 8 in proper order, the district 11 that squeezes elementary, buffer zone 12, superhigh pressure squeeze dehydration district 14 and algae mud ejection of compact district 15, and wherein the distributing trough 8 both sides that are square vertical metal barrel are the activity lateral wall, and when algae mud feeding, distributing trough 8 both sides all can be opened, and the operating personnel of being convenient for in time arranges the filter cloth in the distributing trough 8 in order.

Be equipped with first filter cloth reel 6 directly over cloth groove 8, algae mud pipeline broken wall device 4 in advance connects with first filter cloth reel 6 through the cloth mud hose that is equipped with algae mud proportional valve 5, and first filter cloth reel 6 carries out the back-and-forth movement with the cloth mud hose that is equipped with algae mud proportional valve 5 syntropy simultaneously, during the back-and-forth movement of first filter cloth reel 6, evenly shakeout the filter cloth in cloth groove 8, during the back-and-forth movement of cloth mud hose, with algae mud in the filter cloth of each level of the even whereabouts of going out in first filter cloth reel 6, make the filter cloth cover algae mud, and fold the parcel layer upon layer.

The inner side of the distributing trough 8 is provided with a drainage grid 21, when the algae mud falls to the filter cloth from the high position, the algae mud is influenced by gravity extrusion, and free water formed by the release of the algae mud is discharged from the drainage grid 21 and can flow into the water collecting pool in a centralized manner.

The distributing chute 8 of the device is sequentially transferred to a primary pressing area 11, a buffer area 12, an ultrahigh pressure pressing and dehydrating area 14 and an algae mud discharging area 15 through a working transfer platform 9, so that the work in each area can be conveniently completed; the bottom of the distributing chute 8 is provided with a pulley driven by a motor, and the pulley is arranged in a slide rail matched with the work transferring platform 9, so that the distributing chute 8 can be moved on the work transferring platform 9 at will.

After the feeding of the distributing chute 8 is finished, the distributing chute is firstly translated to a primary squeezing area 11 by a working transfer platform 9, a hydraulic device 10 is arranged right above the primary squeezing area 11, a pressing plate at the lower end of a hydraulic column of the hydraulic device 10 extends into the distributing chute 8, the hydraulic device is started to press the algae mud, the pressure is about 4.0MPA, the pressed algae water is discharged through a water discharge grid 21, and the algae mud exists in filter cloth; after the primary pressing area 11 finishes pressing, the distributing trough 8 is translated to a buffer area 12 by the working transfer platform 9 and is used for further releasing the algae mud cell water and the surface adsorption water; after the buffer area 12 is released, the distributing chute 8 is translated to an ultrahigh pressure squeezing and dewatering area 14 by a working transfer platform 9, an ultrahigh pressure hydraulic device 13 is arranged right above the ultrahigh pressure squeezing and dewatering area 14, the pressure of the ultrahigh pressure hydraulic device 13 is about 10MPA, the ultrahigh pressure hydraulic device 13 is started to pressurize and press the algae mud, gap water, capillary bonding water and surface adsorption water in the algae mud are removed to the maximum extent, the water content of the algae mud is reduced to below 60%, and the algae mud is continuously stored in filter cloth; the distributing chute 8 is translated to the algae mud discharging area 15 by the working transfer platform 9 after the ultrahigh pressure squeezing and dehydrating area 14 finishes dehydrating, and discharging is carried out.

A movable window is arranged on the side wall of an algae mud discharging area 15 of the device, and a mud and cloth separating device 16, a filter cloth cleaning device 17 and a hot air drying device 19 are sequentially arranged on one side of the movable window; and opening the movable side wall at one side of the distribution chute 8, and enabling the filter cloth at the uppermost layer in the distribution chute 8 to pass through the movable window on the algae mud discharging area 15 and be connected to a mud cloth separating device 16.

The mud-cloth separating device 16 comprises two groups of upper and lower guide cylinders, wherein one group of upper and lower guide cylinders guides the filter cloth in the algae mud discharging area 15 into the filter cloth cleaning device 17, and the other group of upper and lower guide cylinders guides the cleaned filter cloth into the hot air drying device 19; the filter cloth guided into the filter cloth cleaning device 17 scrapes the dehydrated dry algae mud in the filter cloth into a mud collecting hopper 22 right below the filter cloth through a mud discharging plate in the mud and cloth separating device 16 in advance, the filter cloth with the algae mud scraped enters the filter cloth cleaning device 17 according to the guide cylinders, and when the filter cloth vertically runs to the other group of guide cylinders, the cleaning pump 18 is started to clean the filter cloth; the washed filter cloth downwards runs into a hot air drying device 19 through another group of guide cylinders, is dried by a heating dryer 20, and is finally wound on a second filter cloth winding drum 7 arranged in the hot air drying device 19; after all the filter cloth in the distributing chute 8 is guided out of the algae mud discharging area 15, the filter cloth is translated to the position under the first filter cloth drum 6 again through the working transferring platform 9, and then the next cycle working stage is started.

The utility model discloses a use as follows:

when in use, the blue algae is salvaged into the flotation device 33 for flotation treatment, the clarified algae water is separated and a compact algae residue layer is formed, the water content of the algae residue layer is reduced to about 95 percent, then, the residue scraping machine 25 is started to scrape the algae residue into the scum groove 26, the algae residue is collected and enters the residue collecting groove 27 through a pipeline after being full, the residue collecting groove 27 can convey the floated algae residue to the screw stacking machine 1 through the extraction pump for dehydration until the water content of the algae sludge is reduced to about 90%, the dehydrated algae sludge falls into the algae sludge pool 2 from the discharge port of the screw stacking machine 1, the algae sludge is pumped into the algae sludge pipeline pre-breaking device 4 through the screw pump 3 to be broken in wall, and then the algae mud is connected into a first filter cloth drum 6 right above a distribution groove 8 through a mud distribution hose provided with an algae mud proportional valve 5 under the pressure of a screw pump 3, so that the algae mud uniformly falls into the filter cloth at each layer to form an algae mud thin layer which is folded in the distribution groove 8.

When the algae mud forms an algae mud thin layer completely, the distributing trough 8 is translated to a primary squeezing area 11 through a working moving platform 9 for primary squeezing, cell water and surface adsorption water in the algae mud after primary squeezing are further released and discharged from a drainage grid 21 on the inner side of the distributing trough 8, and the water content of the algae mud is reduced to 75%; the distributing chute 8 is translated to the buffer area 12 by the working transfer platform 9 after the primary pressing area 11 is finished and is released continuously; the cloth chute 8 after the release is translated to an ultrahigh pressure squeezing and dehydrating area 14 by a working transfer platform 9 for secondary squeezing, so that the water content of the algae mud is reduced to below 60%; the cloth chute 8 after the secondary pressing is translated to the algae mud discharging area 15 by the work transferring platform 9, the movable side wall on one side of the cloth chute 8 is opened, the uppermost filter cloth in the cloth chute 8 passes through a movable window on the algae mud discharging area 15 and is connected to the mud and cloth separating device 16, then the filter cloth is scraped, cleaned and dried, and finally wound on the second filter cloth winding drum 7, and the cloth chute 8 is translated again to the position under the first filter cloth winding drum 6 by the work transferring platform 9 to start the next cycle working stage.

Other parts which are not described in the present invention are the same as those in the prior art.

Claims

1. The utility model provides a blue alga flotation and dewatering device, its characterized in that it includes flotation device (33), folds spiral shell machine (1) and work and transfers platform (9), it sets up between flotation device (33) and work transfer platform (9) to fold spiral shell machine (1), flotation device (33) includes casing (34) and dissolved air tank (29), the lower part in casing (34) is equipped with flotation tank (35), be equipped with perforation water distributor (30) in flotation tank (35), flotation tank (35) upper portion symmetry is equipped with buffering water diffuser (23), be equipped with symmetrical pressure relief device (24) between buffering water diffuser (23), the import of pressure relief device (24) is connected with dissolved air water branch pipe (31), it has rubber tube (32) to communicate on dissolved air water branch pipe (31), dissolved air tank (29) import has nanometer bubble pump (28) through the pipe connection, dissolve gas pitcher (29) exit linkage's water pipe and dissolve gas water branch pipe (31) swing joint, top in casing (34) is equipped with scrapes sediment machine (25), scrape sediment machine (25) lower part one side and install scum groove (26), scum groove (26) have collection cinder groove (27) through the pipe connection, collection cinder groove (27) link to each other with fold spiral shell machine (1) feed inlet through the pipeline, be equipped with algae mud pond (2) under folding spiral shell machine (1) discharge gate, the export in algae mud pond (2) is passed through screw pump (3) and is linked to each other with the import of algae mud pipeline broken wall device (4) in advance, work is transferred and is installed distributing trough (8), elementary press district (11), buffer memory district (12), superhigh pressure and is squeezed dehydration district (14) and algae mud ejection of compact district (15) from a left side to the right side on platform (9) in proper order, be equipped with first filter cloth reel (6) directly over distributing trough (8), the algae mud pipeline pre-breaking device (4) is connected with the first filter cloth drum (6) through a mud distributing hose provided with an algae mud proportional valve (5), the inner side of the distributing chute (8) is provided with a drainage grid (21), the distributing chute (8) is sequentially transferred into a primary pressing area (11), a buffer area (12), an ultrahigh pressure pressing and dewatering area (14) and an algae mud discharging area (15) through a working transfer platform (9), a hydraulic device (10) is arranged right above the primary squeezing area (11), an ultrahigh pressure hydraulic device (13) is arranged right above the ultrahigh pressure squeezing and dewatering area (14), a movable window is arranged on the side wall of the algae mud discharging area (15), a mud-cloth separating device (16), a filter cloth cleaning device (17) and a hot air drying device (19) are sequentially arranged on one side of the movable window, a mud collecting hopper (22) is arranged right below the mud cloth separating device (16).

2. The blue algae flotation and dehydration device according to claim 1, wherein the buffer water diffuser (23) is a repeatedly variable-diameter horn-shaped structure.

3. The blue algae flotation and dehydration device according to claim 1, characterized in that the perforated water distribution pipe (30) is connected with a storage tank for containing natural polymer-based flocculant.

4. The blue algae flotation and dehydration device according to claim 1, wherein the algae mud pipeline pre-breaking device (4) is a circular sealed metal cylinder, and a circular pressing hammer, a cavity-shaped mud guide groove and a conical diversion plate are sequentially arranged inside the algae mud pipeline pre-breaking device (4).

5. The blue algae flotation and dewatering device according to claim 1, wherein the first filter cloth drum (6) and a mud distribution hose provided with the algae mud proportional valve (5) move back and forth simultaneously and in the same direction.

6. The blue algae flotation and dehydration device according to claim 1, characterized in that the distribution chute (8) is a square vertical metal cylinder, and two sides of the distribution chute (8) are movable side walls.

7. The blue algae flotation and dehydration device according to claim 1, characterized in that a pulley for driving a motor is arranged at the bottom of the distribution chute (8), and the pulley is arranged in a slide rail matched with the working transfer platform (9).

8. The blue algae flotation and dewatering device according to claim 1, wherein the mud-cloth separation device (16) comprises two sets of upper and lower guide cylinders, one set of upper and lower guide cylinders guides the filter cloth in the algae mud discharging area (15) into the filter cloth cleaning device (17), and the other set of upper and lower guide cylinders guides the cleaned filter cloth into the hot air drying device (19).

9. The blue algae flotation and dewatering device according to claim 1, wherein a cleaning pump (18) is arranged at the bottom of the filter cloth cleaning device (17) opposite to the filter cloth.

10. The blue algae flotation and dehydration device according to claim 1, wherein a second filter cloth drum (7) is arranged in the hot air drying device (19), and a heating dryer (20) is arranged at the bottom of the hot air drying device (19) opposite to the second filter cloth drum (7).