Blue-green algae mud dehydration treatment device based on solar photothermal conversion technology

Abstract

The utility model discloses a blue-green algae mud dehydration treatment device based on a solar photothermal conversion technology, which belongs to the technical field of blue-green algae dehydration and comprises a dehydration chamber, an evaporation chamber, a collection chamber, a water storage chamber and a photovoltaic power supply system which are communicated in sequence, the dehydration chamber is located below the treatment device, the outer side of the dehydration chamber is connected with an algae mud branch pipe, and an evaporation system is arranged in the dehydration chamber and comprises an underwater heat conduction shell and a floating type composite fabric material; the evaporation chamber is positioned above the whole device; a water collecting top plate is arranged in the evaporation chamber; the floating type composite fabric material is a carbon fiber fabric modified by a nitrogen-doped carbon nano tube; the collecting chamber is positioned on one side of the evaporation chamber; and the water storage chamber is positioned below the collecting chamber. Solar energy is used as clean energy, moisture in blue-green algae is evaporated through the photothermal effect, and therefore efficient treatment of the blue-green algae is achieved, environmental pollution caused by chemical treatment can be reduced, and economic cost of blue-green algae treatment can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to blue-green algae dewatering technical field, concretely relates to a kind of blue-green algae sludge dewatering treatment device based on solar light heat conversion technology. BACKGROUND

[0002] Blue-green algae is a kind of microorganism that can rapidly reproduce in warm, still and organic-rich water bodies. They can form green or blue-green scum covering the water surface, leading to water hypoxia, affecting water quality, and even producing harmful toxins. Traditional blue-green algae treatment methods have many shortcomings such as high cost, complex operation, and easy secondary pollution. To address the shortcomings of existing technology, this patent proposes a blue-green algae sludge dewatering treatment device based on solar light heat conversion technology. The device uses solar energy as a clean energy source and uses light heat effect to evaporate water in blue-green algae, thereby achieving efficient treatment of blue-green algae. It not only reduces environmental pollution caused by chemical treatment, but also effectively reduces the economic cost of blue-green algae treatment, with broad application prospects and market potential. Through continuous technological innovation and optimization, the device is expected to provide a new solution for the governance of blue-green algae blooms.

[0003] A "blue algae dehydration method, and blue algae organic fertilizer and blue algae nutrient soil prepared by the method" patent with publication number CN115745361A discloses a blue algae dehydration method. After the blue algae is oxidized and flocculated, it is subjected to preliminary dehydration to obtain slurry-shaped blue algae, which is then subjected to deep dehydration to obtain blue algae filter cake. The blue algae filter cake obtained after two dehydrations is in a semi-solid state, and the water content is 40-50%. However, the addition of flocculants increases the risk of secondary pollution, and the belt filter and the super strong press consume a large amount of electricity, increasing the economic investment. The patent "blue algae sludge treatment system" with application publication number CN218931928U discloses a blue algae sludge treatment system. The invention does not add a dehydrating agent, can improve the heat value of the treated algae sludge, improve the utilization rate of the algae sludge resource incineration, and has no safety hazards of algal toxins, but has the disadvantages of complicated operation process, many process steps, and low continuous efficiency. The patent "blue algae deep and efficient dehydration and high-value utilization method" with publication number CN117228929A discloses a blue algae deep and efficient dehydration and high-value utilization method. The invention destroys the cell structure of blue algae by high-pressure cooking and flash evaporation, releases the intracellular water of blue algae, and improves the dehydration performance of blue algae and the added value of blue algae, but the high-pressure cooking and flash evaporation consume a large amount of energy, and the method is not green and environmentally friendly. The above three patents can achieve the purpose of blue algae dehydration. However, there are still some deficiencies. On the one hand, in traditional blue algae treatment, the introduction of chemical flocculants may cause secondary pollution, and the power consumption of the belt filter and high-pressure equipment increases the economic burden. On the other hand, these methods are complicated to operate, have long process steps, and have low processing efficiency. In addition, although high-pressure cooking and flash evaporation can destroy the cell wall, their high energy consumption characteristics are contrary to the concept of green environmental protection. Therefore, it is particularly important to seek a new blue algae treatment technology that can simplify the operation, reduce the economic investment, achieve efficient and continuous treatment, and meet the environmental protection standards. Practical new type content

[0004] The purpose of the present utility model is to solve the defects in the prior art, and provide a blue algae sludge dehydration treatment device based on solar light-heat conversion technology.

[0005] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present utility model is:

[0006] The present utility model discloses a blue algae sludge dehydration treatment device based on new energy conversion technology, which comprises a dehydration chamber, an evaporation chamber, a collection chamber, a water storage chamber and a photovoltaic power supply system outside the device,

[0007] The dehydration chamber, the evaporation chamber, the collection chamber and the water storage chamber are sequentially connected.

[0008] The dehydration chamber is located below the treatment device, and is connected with the algae sludge branch pipe outside. The dehydration chamber is provided with a light-heat evaporation and Joule heat evaporation synergistic evaporation system. The light-heat evaporation and Joule heat evaporation synergistic evaporation system comprises a floating composite fabric material on the water surface and an underwater heat-conducting shell completely placed under the water surface and completely contacting with the blue-green algae sludge, wherein the floating composite fabric material is provided with wires at both ends and is connected with a photovoltaic power supply system.

[0009] The evaporation chamber is located above the treatment device. The evaporation chamber is provided with a condensate water transportation and collection top plate composed of a base plate and a coating layer. The base plate is subjected to hydrophilic treatment. The coating layer is printed on the base plate in a pattern by screen printing after the base plate is subjected to plasma plasma technology hydrophilic treatment.

[0010] The collection chamber is located on one side of the evaporation chamber, and the water storage chamber is located below the collection chamber.

[0011] Further, the underwater heat-conducting shell adopts copper foam with more holes on the top and less holes on the bottom, and the copper foam is coated with an anti-corrosion graphene oxide coating.

[0012] Further, the floating composite fabric material is a carbon fiber fabric modified by nitrogen-doped carbon nanotubes.

[0013] Further, the pattern of the collection top plate in the evaporation chamber for quickly transporting condensed water is a collection pattern of bionic iguana dorsal skin recessed hydrophilic channels and hydrophobic areas.

[0014] Further, the collection chamber (15) is provided with a copper condensing plate.

[0015] Further, the connection between the collection chamber and the water storage chamber is funnel-shaped, and a support pile is arranged below. The collection chamber is installed on the support pile, and the port of the collection water branch pipe outside the water storage chamber is in communication with the top position of the bottom support pile.

[0016] Further, the condensing plate (14) is twelve pieces.

[0017] Further, the condensing plate is a heat dissipation fin with the same width and decreasing length.

[0018] Further, the treatment device comprises a plurality of dehydration treatment devices. The algae sludge branch pipe of each device is connected with an algae sludge main pipe (21), and the water outlet branch pipe of each device is connected with a water outlet main pipe (20).

[0019] Further, the water storage chamber is connected with a water outlet branch pipe (19) outside. The inlet valve (2) is arranged on the algae sludge branch pipe, and the outlet valve (18) is arranged on the water outlet branch pipe.

[0020] The beneficial effects of the device are that: the device is provided with an evaporation system with synergistic effect of photo-thermal evaporation and Joule heat evaporation in the dehydration chamber, which comprises an underwater heat-conducting shell arranged in the blue algae dehydration chamber and a composite fabric material with photo-thermal and Joule heat conversion effect. The fabric material has excellent photo-thermal and Joule heat conversion effect, a part of solar energy is converted into heat energy during the day, and a part of the heat energy is stored in the fabric material for reuse at night, so that continuous heating of the blue algae sludge is realized. The underwater heat-conducting shell is copper foam with high heat conduction efficiency, which can fully contact with the sludge and quickly conduct heat. The sludge will dehydrate when heated, and the water will condense into water droplets in the form of water vapor on the top plate of the evaporation chamber, and then quickly transport along the pattern to the collection chamber, thereby reducing the light refraction loss of the incident sunlight during the day. The hydrophilic condensation plate treated by plasma plasma technology in the collection chamber can actively capture the water vapor above the evaporation chamber, thereby relieving the phenomenon that the evaporation rate decreases when the water vapor in the evaporation chamber reaches a saturated state, so as to maintain a faster evaporation rate in the evaporation chamber, and higher sludge dehydration efficiency can be obtained. The condensed water obtained by evaporation can be stored for other purposes due to its purity. The main points are as follows:

[0021] (1) Innovation: The device uses solar energy to continuously drive the treatment of blue algae sludge, realizing clean and efficient energy conversion. The environmental friendliness and unlimited nature of solar energy provide a sustainable economic energy source for the treatment, reducing environmental pollution and resource dependence.

[0022] (2) High efficiency: The device of the invention adopts high-efficiency photo-thermal and Joule heat conversion materials to quickly raise the temperature of the sludge, accelerate evaporation, improve processing efficiency and capacity, and meet large-scale demand.

[0023] (3) Practicality: The structure of the invention is simple and practical, and the modular design simplifies installation and operation, reduces the risk of failure and maintenance cost. The operation and maintenance are simple, based on solar energy power, which can reduce manual intervention, improve safety and convenience. The running cost is low, the solar energy is free and the maintenance is simple, which significantly reduces the overall cost.

[0024] (4) Environmental protection: The treatment process of the invention does not use chemical additives, avoiding secondary pollution and being environmentally friendly. The device is environmentally friendly, which helps to restore the ecological balance of water bodies, improve water quality, protect biodiversity, and recycle the collected water, promoting sustainable development.

[0025] The utility model aims at solving the defects in the prior art and provides a blue algae sludge dehydration treatment device based on solar photo-thermal conversion technology.

[0026] In order to achieve the above-mentioned purpose, the technical scheme adopted by the utility model is:

[0027] The utility model relates to a blue-green algae sludge dewatering treatment device based on new energy conversion technology, including dehydration chamber, evaporation chamber, collection chamber, water storage room and the photovoltaic power supply system outside the device,

[0028] The dehydration chamber, evaporation chamber, collection chamber and water storage room are sequentially communicated.

[0029] The dehydration chamber is located below the treatment device, and an algae sludge branch pipe is connected to the outer side of the dehydration chamber; a light-heat evaporation and Joule heat evaporation synergistic evaporation system is arranged in the dehydration chamber; the light-heat evaporation and Joule heat evaporation synergistic evaporation system comprises a floating composite fabric material on the water surface and an underwater heat-conducting shell completely immersed in the water and in complete contact with the blue-green algae sludge; the floating composite fabric material is provided with wires at both ends connected to the photovoltaic power supply system.

[0030] The evaporation chamber is located above the treatment device, and a condensate water transportation and collection top plate is arranged in the evaporation chamber; the top plate is composed of a substrate and a coating layer; the substrate is subjected to hydrophilic treatment; the coating layer is a polydimethylsiloxane coating layer printed on the substrate in a pattern by silk screen printing after the substrate is subjected to plasma plasma technology hydrophilic treatment.

[0031] The collection chamber is located on one side of the evaporation chamber, and the water storage room is located below the collection chamber.

[0032] Further, the underwater heat-conducting shell is made of copper foam with more pores on the top and fewer pores on the bottom, and the copper foam is coated with an anti-corrosion graphene oxide coating.

[0033] Further, the floating composite fabric material is a carbon fiber fabric modified by nitrogen-doped carbon nanotubes.

[0034] Further, the pattern for quickly transporting condensed water on the water collection top plate in the evaporation chamber is a water collection pattern simulating the hydrophilic channels and hydrophobic regions on the dorsal skin of a bionic anole.

[0035] Further, the collection chamber (15) is provided with a copper condensing plate.

[0036] Further, the connection between the collection chamber and the water storage room is funnel-shaped, and a support pile is arranged below; the collection chamber is installed on the support pile, and the port of the collection water branch pipe on the outer side of the water storage room is in communication with the top position of the bottom support pile.

[0037] Further, the condensing plate (14) is twelve pieces.

[0038] Further, the condensing plate is a heat dissipation fin-shaped with the same width and decreasing length.

[0039] Further, the processing device comprises a plurality of dewatering processing devices, and the algal sludge branch pipes of each device are connected to the algal sludge main pipe (21), and the water outlet branch pipes of each device are connected to the water outlet main pipe (20).

[0040] Further, the water storage chamber is connected to the water outlet branch pipe (19) on the outside, and the algal sludge branch pipe is provided with an inlet valve (2), and the water outlet branch pipe is provided with an outlet valve (18).

[0041] The device has the following advantages: the device is provided with an evaporation system with synergistic effect of photothermal evaporation and Joule heat evaporation in the dewatering chamber, which comprises an underwater heat-conducting shell arranged in the blue algae dewatering chamber and a composite fabric material with photothermal and Joule heat conversion effect; the fabric material has excellent photothermal and Joule heat conversion effect; a part of solar energy is converted into heat energy during the day, and the heat energy is stored in the fabric material for utilization at night, so that continuous heating of the blue algae sludge is realized; the underwater heat-conducting shell is copper foam with high heat conduction efficiency, which can fully contact with the sludge and quickly conduct heat; the sludge is dewatered by heat, and the dewatered water is condensed into water droplets in the form of water vapor on the top plate of the evaporation chamber, and then is quickly transported along the pattern to the collection chamber; the light refraction loss of the incident sunlight during the day is reduced; the hydrophilic condensation plate treated by plasma plasma technology in the collection chamber can actively capture the water vapor above the evaporation chamber, so as to alleviate the phenomenon that the evaporation rate decreases when the water vapor in the evaporation chamber reaches a saturated state, and to maintain a relatively fast evaporation rate in the evaporation chamber, so that higher sludge dewatering efficiency can be obtained; and finally, the condensed water obtained by evaporation can be stored for other purposes due to its purity.

[0042] (1) Innovation: the device uses solar energy to continuously drive the treatment of blue algae sludge, realizing clean and efficient energy conversion. The environmental friendliness and unlimited nature of solar energy provide a sustainable economic energy source for the treatment, reducing environmental pollution and resource dependence.

[0043] (2) Efficiency: the device uses high-efficiency photothermal and Joule heat conversion materials to quickly raise the temperature of the sludge, accelerate evaporation, improve processing efficiency and capacity, and meet large-scale demand.

[0044] (3) Practicality: the structure of the device is simple and practical, and the modular design simplifies installation and operation, reduces the risk of failure and maintenance cost. The operation and maintenance are simple, and the device is powered by solar energy, which can reduce manual intervention, improve safety and convenience. The running cost is low, and the solar energy is free and easy to maintain, which significantly reduces the overall cost.

[0045] (4) Environmental protection: the treatment process of the device does not use chemical additives, avoiding secondary pollution and being environmentally friendly and clean. The device is environmentally friendly, which helps to restore the ecological balance of water bodies, improve water quality, protect biodiversity, and recycle the collected water, promoting sustainable development. BRIEF DESCRIPTION OF DRAWINGS

[0046] Figure 1 It is the schematic view of multiple devices of the blue algae sludge dewatering treatment device based on the solar light heat conversion technology of the utility model.

[0047] Figure 2 It is the main body structure schematic view of the blue algae sludge dewatering treatment device based on the solar light heat conversion technology of the utility model.

[0048] Figure 3 It is the side view of the blue algae sludge dewatering treatment device based on the solar light heat conversion technology of the utility model.

[0049] Figure 4 It is the light heat and joule heat conversion module section view schematic view of the blue algae sludge dewatering treatment device based on the solar light heat conversion technology of the utility model.

[0050] Figure 5 It is the water collecting pattern of the evaporation chamber upper layer top plate of the blue algae sludge dewatering treatment device based on the solar light heat conversion technology of the utility model.

[0051] Figure 6 It is the three view of the collection chamber of the blue algae sludge dewatering treatment device of the utility model.

[0052] Reference signs: 1, sludge branch pipe; 2, inlet valve; 3, dewatering chamber; 4, underwater heat conduction shell; 5, floating type composite fabric material; 6, evaporation chamber; 7, hydrophobic area; 8, hydrophilic channel; 9, water collecting top plate; 10, solar panel; 11, wire; 12, battery; 13, liquid level meter; 14, condensing plate; 15, collection chamber; 16, collection bucket side wall; 17, water storage chamber; 18, outlet valve; 19, water outlet branch pipe; 20, water outlet main pipe; 21, sludge main pipe. DETAILED DESCRIPTION

[0053] In order to better understand the technical scheme in the utility model, the following will be described in detail in conjunction with the drawings.

[0054] As Figures 1 to 6 A blue algae sludge dewatering treatment device based on new energy conversion technology, including dewatering chamber 3, evaporation chamber 6, collection chamber 15, water storage chamber 17 and the photovoltaic power supply system outside the device, dewatering chamber 3, evaporation chamber 6, collection chamber 15, water storage chamber 17 are sequentially communicated;The dewatering chamber 3 is located below the treatment device, and the outer side is connected with the sludge branch pipe 1, the dewatering chamber 3 is provided with the evaporation system of light heat evaporation and joule heat evaporation synergistic effect,

[0055] The evaporation chamber 6 is located above the treatment device, and the evaporation chamber 6 is provided with a condensate water transport collection roof 9, which is composed of a base plate and a coating layer, the base plate is subjected to hydrophilic treatment, and the coating layer is printed on the base plate after hydrophilic treatment by screen printing with polydimethylsiloxane paint in a pattern;

[0056] The collection chamber 15 is located on one side of the evaporation chamber 6, and the water storage chamber 17 is located below the collection chamber 15.

[0057] The photothermal evaporation and joule heat evaporation synergistic evaporation system includes a floating composite fabric material 5 on the water surface and an underwater heat-conducting shell 4 completely placed under the water surface and in complete contact with the cyanobacterial sludge, wherein the floating composite fabric material 5 is provided with wires 11 at both ends to be connected with a photovoltaic power supply system.

[0058] The floating composite fabric material 5 on the water surface is a carbon fiber-CF@NC fabric modified by nitrogen-doped carbon nanotubes, which has a highly graphitized structure, excellent light absorption capacity and hydrophilicity, and is suitable for photothermal and joule heat conversion. By applying a voltage to the CF@NC fabric, the joule heat generated when the current passes through the conductor is used to increase the evaporation rate. The joule heat effect generates heat through the collision of electrons and crystal lattices, thereby increasing the temperature of the material. The CF@NC fabric achieves an evaporation rate of 10.37 kg·m −2 ·h −1 under 1 solar radiation and 2.5-volt voltage, and the evaporation rates are 1.81 kg·m −2 ·h −1 and 7.63 kg·m −2 ·h −1 , respectively, under only 1 solar radiation or 2.5-volt voltage.

[0059] The material used for the underwater heat-conducting shell 4 is copper foam with upper porosity and lower porosity, and the large pores in the middle and lower layers are beneficial to direct contact with the sludge and accelerate the evaporation of water in the sludge. The use of copper foam is beneficial to quickly conduct the temperature to the sludge, which is more conducive to the evaporation of water. In addition, in order to prevent corrosion, an anti-corrosion graphene oxide coating is coated on the copper foam, which can form a dense coating on the copper foam, effectively blocking water and corrosion medium, while allowing heat to be transmitted through the coating.

[0060] The evaporated water vapor is collected as droplets on the roof of the evaporation chamber 6, and the pattern on the roof of the evaporation chamber 6 is composed of a hydrophilic treated base plate and a polydimethylsiloxane hydrophobic coating layer. The acrylic base plate becomes hydrophilic after plasma treatment, and the prepared polydimethylsiloxane paint is printed on the hydrophilic base plate by screen printing, and a pattern is obtained after drying.

[0061] The concave hydrophilic channels 8 and hydrophobic areas 7 of the biomimetic lizard back skin form a water collection pattern, the hydrophilic channels 8 attract and hold water, and the hydrophobic areas 7 prevent diffusion and guide the flow of water droplets. The specific pattern arrangement optimizes water collection and guidance, dynamically responding to different humidity conditions. In a high humidity environment, the hydrophobic areas 7 capture more water droplets, while in a low humidity environment, the hydrophilic channels 8 effectively transport water to where it is needed. In summary, the water collection pattern realizes the coexistence of two gradients of topography and hydrophilicity and hydrophobicity, which is beneficial to the rapid directional transportation of liquid droplets, reduces the residence time of liquid droplets on the top plate, and thus reduces the light refraction loss of incident light.

[0062] The condensed droplets are transported to the collection chamber 15, which is provided with a hydrophilic treated condensing copper plate. Arranged in the form of a heat sink, the relatively cold surface temperature is conducive to releasing the condensation latent heat and collecting the condensed vapor. It alleviates the saturation of water vapor in the evaporation chamber 6 and reduces the evaporation rate.

[0063] The collected condensed water in the collection chamber 15 is stored in the water storage chamber 17.

[0064] When the water level in the dehydration chamber 3 approaches the lower threshold, the valve controller opens the inlet valve 2, and when the water level in the dehydration chamber 3 approaches the upper threshold, the inlet valve 2 is closed.

[0065] In practical application, multiple devices can be arranged in a row, and algal mud is injected into each device through the algal mud dry pipe 21. When the collected water in the water storage chamber 17 reaches a certain amount, the collected water is guided out of the main pipe for unified collection. Multiple devices operate synchronously, and the efficiency is multiplied.

[0066] The photothermal and joule heat coupling evaporation cyanobacteria dehydration device is provided with a photothermal and joule heat conversion system, which can continuously convert solar energy into heat energy. The water in the algal mud is heated and evaporated, and condenses and collects at the top of the evaporation chamber. In addition, the pattern on the top plate of the evaporation chamber accelerates the collection of condensed water, and the condensing plate 14 in the collection chamber alleviates the saturation state of water vapor, so that water evaporation can continue. The finally collected water can be used for other purposes due to its purity. The device uses solar energy as the only energy source, and does not consume other energy sources during the treatment process, which is energy-saving, efficient and environmentally friendly. The main features, basic principles and advantages of the device are shown and described above.

[0067] Finally, it should be noted that the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement for the foregoing embodiments of the technical solutions recorded. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included within the scope of the present application.

Claims

1. A cyanobacteria sludge dewatering device based on solar light-heat conversion technology, comprising a dewatering chamber (3), an evaporation chamber (6), a collection chamber (15), a water storage chamber (17), and a photovoltaic power supply system outside the device, characterized in that: the dewatering chamber (3), the evaporation chamber (6), the collection chamber (15), and the water storage chamber (17) are sequentially connected; the dewatering chamber (3) is located below the device, and its outer side is connected to a sludge branch pipe (1); the dewatering chamber (3) is provided with a light-heat evaporation and Joule heat evaporation synergistic evaporation system; the light-heat evaporation and Joule heat evaporation synergistic evaporation system comprises an underwater heat-conducting shell (4) completely immersed in water and in complete contact with cyanobacteria sludge and a floating composite fabric material (5) on the water surface; the floating composite fabric material (5) is provided with wires at both ends to be connected to the photovoltaic power supply system to realize the function of Joule heat; the underwater heat-conducting shell (4) conducts solar energy and Joule heat to the underwater area through close connection with the floating composite fabric material (5) to heat and dewater the cyanobacteria sludge; the evaporation chamber (6) is located above the entire device; the evaporation chamber (6) is provided with a water collection top plate (9) for rapid transportation of condensed water; the water collection top plate (9) is composed of a substrate and a coating; the substrate is subjected to hydrophilic treatment by plasma technology; and the coating is a patterned polydimethylsiloxane coating printed on the substrate after hydrophilic treatment; the floating composite fabric material (5) is a carbon fiber fabric modified by nitrogen-doped carbon nanotubes; the collection chamber (15) is located on one side of the evaporation chamber (6); and the water storage chamber (17) is located below the collection chamber (15). The underwater heat-conducting shell (4) is made of copper foam with more pores on the top and fewer pores on the bottom, and the copper foam is coated with an anti-corrosion graphene oxide coating. The printed pattern on the water collection top plate (9) imitates the dorsal skin of anoles and is composed of recessed hydrophilic channels and hydrophobic areas. The collection chamber (15) is provided with copper condensing plates. The connection between the collection chamber (15) and the water storage chamber (17) is funnel-shaped, and a support pile is arranged below; the collection chamber (15) is installed on the support pile, and the outlet of the water collection branch pipe on the outer side of the water storage chamber (17) is connected to the top of the support pile.

2. The cyanobacterial sludge dewatering device based on solar light-heat conversion technology according to claim 1, characterized in that: The condensing plates are twelve in number, and six are installed on each side of the collection chamber (15).

3. The cyanobacterial sludge dewatering device based on solar light-heat conversion technology according to claim 1, characterized in that: The condensing plates are heat dissipation fin-shaped with the same width and decreasing length.

4. The cyanobacterial sludge dewatering device based on solar light-heat conversion technology according to claim 1, characterized in that: The device comprises multiple dewatering devices, and the sludge branch pipe (1) of each device is connected to a sludge main pipe (21), and the water outlet branch pipe (19) of each device is connected to a water outlet main pipe (20).

5. The cyanobacterial sludge dewatering device based on solar light-to-heat conversion technology according to claim 4, characterized in that: The water storage chamber (17) is connected to the water outlet branch pipe (19), the sludge branch pipe (1) is provided with an inlet valve (2), and the water outlet branch pipe (19) is provided with an outlet valve (18).

6. The cyanobacterial sludge dewatering device based on solar light-to-heat conversion technology according to claim 4, characterized in that: ​ 7. The cyanobacterial sludge dewatering device based on solar light-to-heat conversion technology according to claim 6, characterized in that: ​ 8. The cyanobacterial sludge dewatering device based on solar light-heat conversion technology according to claim 1, characterized in that: ​ 9. The cyanobacterial sludge dewatering device based on solar light-to-heat conversion technology according to claim 1, characterized in that: ​

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