Outdoor wastewater rapid purification device, its water purification plate, and manufacturing method

Abstract

An outdoor wastewater rapid purification device and its water purification plate (2) and method for manufacturing the device, the device comprising a bracket (1), a water purification plate mounted on the bracket (1), and a water collection mechanism (3), the water collection mechanism (3) being mounted on the water purification plate (2) and installed at an inclination with respect to the water purification plate (2), the water purification plate (2) being a coated fine-textured aluminum plate (21), the surface of the coated fine-textured aluminum plate (21) having uniformly distributed open periodic wavy microstructure grooves (22), the microstructure grooves (22) extending longitudinally along the length direction of the coated fine-textured aluminum plate (21) and traversing the entire surface of the coated fine-textured aluminum plate (21). Each microstructure groove (22) is periodic and orderly wavy along the length direction, and the surface of the coated fine-textured aluminum plate (21) has photocatalytic bactericidal TiO2 / CuO x A composite thin film (23) is coated on the plate. A method for manufacturing the water purification plate (2) is also disclosed. This enables long-term and repeatable water purification, providing safe and reliable drinking water to workers in arid outdoor areas.

Description

[Technical Field]

[0001] This invention relates to environmental protection and energy-saving technologies, and more particularly to an outdoor wastewater rapid purification device, its water purification plate, and a method for manufacturing it. [Background technology]

[0002] In field work in arid regions, sufficient and safe drinking water is a prerequisite and crucial guarantee for workers to complete their tasks. When water resources are scarce, purifying field water sources through filtration, sedimentation, and cooking is a common strategy. However, when faced with water pollution (heavy metals, microbial pathogens, etc.) or water scarcity, conventional water collection and purification measures may not meet the requirements of workers for water volume, water quality, and lightweight equipment, affecting the progress of field work and potentially endangering workers' lives. Therefore, efficient and convenient water purification and collection are prerequisites for the smooth execution of field work.

[0003] Conventional portable water sampling and purification systems are often designed and manufactured based on filter cartridge filtration and high-temperature disinfection methods. Such devices are heavy and complex to install. They have the drawback of requiring large amounts of water, especially in outdoor environments with water scarcity or poor water quality, and they cannot completely remove heavy metal contamination from the water. Therefore, they fail to meet the demand for reliable and safe drinking water.

[0004] By using solar energy to evaporate and distill water, pollutants such as microbial pathogens, heavy metals, and minerals can be completely and effectively removed. This is an economical and environmentally friendly method of water production. However, existing solar evaporation systems require water to be collected and purified first, and because the heat source and water source are separated, heat loss is significant and efficiency is low. Using microporous materials to produce water by siphon effect and interfacial heat absorption distillation has drawbacks: the sealed water supply capillaries are prone to clogging, wear and corrosion occur easily, the equipment is complex and unsuitable for water-scarce environments, and maintenance costs are high. [Overview of the project] [Problems that the invention aims to solve]

[0005] The technical problem that this invention aims to solve is to provide a sustainable, recyclable, highly thermally efficient, lightweight, and portable outdoor wastewater rapid purification device, its water purification plate, and a method for manufacturing it, which can completely remove heavy metal pollutants from water, taking into consideration the above-mentioned shortcomings of the prior art. [Means for solving the problem]

[0006] To achieve the above objective, the present invention provides a water purification plate. The water purification plate is a coated fine-textured aluminum plate, on the surface of the coated fine-textured aluminum plate a uniform distribution of open, periodic, wavy microstructure grooves, the microstructure grooves extending longitudinally along the length direction of the coated fine-textured aluminum plate and traversing the entire surface of the coated fine-textured aluminum plate, each of the microstructure grooves forming a periodic and orderly wavy pattern along the length direction, and on the surface of the coated fine-textured aluminum plate a photocatalytic bactericidal TiO2 / CuO x A composite thin film is coated on it.

[0007] In the water purification plate, the cross-section of the microstructure groove is rectangular, the groove width of the microstructure groove is 10 to 50 μm, the depth of the microstructure groove is 10 to 150 μm, and the spacing between adjacent microstructure grooves is 30 to 100 μm.

[0008] In the water purification plate, the wave-like shape of each of the microstructure grooves is sinusoidal, the wavelength of the sinusoidal wave is 20 to 300 μm, and the amplitude of the sinusoidal wave is 50 to 100 μm.

[0009] In the water purification plate, the TiO2 / CuO x The composite thin film is a multilayer modulated thin film, and the TiO2 / CuO x Each modulated periodic layer of the composite thin film consists of a 10-20 nm TiO2 coating and a 1-5 nm CuO2 coating.x The structure is made up of layered coatings, and the TiO2 / CuO x The total coating thickness of the composite thin film is 100-300 nm.

[0010] In the water purification plate, the surface of the coated fine-textured aluminum plate is black.

[0011] To better achieve the above objectives, the present invention also provides a method for manufacturing a water purification plate. Step S100 involves manufacturing a coated micro-textured aluminum plate, and using a femtosecond laser, processing open, periodic, wavy microstructure grooves into a polished aluminum plate having a surface roughness of less than 0.8 μm, wherein the microstructure grooves extend longitudinally along the length of the coated micro-textured aluminum plate, traversing the entire surface of the coated micro-textured aluminum plate, and each of the microstructure grooves is periodic and orderly wavy along the length. Step S200 involves ultrasonic and Ar plasma treatment of the coated fine-textured aluminum plate obtained by femtosecond laser processing, Using atomic layer deposition, the photocatalyst TiO2 / CuO2 is applied to the surface and inner surface of the microstructure grooves of the coated microtextured aluminum plate. x The process includes step S300 for manufacturing a nanomultilayer composite thin film.

[0012] In the above-described method for manufacturing a water purification plate, the process parameters for femtosecond laser processing in step S100 are: output power of 0.1 to 1 W, wavelength of 600 to 800 nm, repetition frequency of 1 to 10 kHz, and scanning speed of 100 μm / s to 1000 μm / s.

[0013] In the above method for manufacturing a water purification plate, in step S300, TiO2 / CuO2 produced by the atomic layer deposition method x Nano multilayer composite thin films consist of a 10-20 nm TiO2 thin film layer topped with a 1-5 nm CuO2 layer. xA plurality of layers of TiO2 thin films and CuO with alternately laminated thin film layers x including a thin film, and the TiO2 / CuO x The thickness of the nano multilayer composite thin film is 100 - 300 nm.

[0014] In the method for manufacturing the above water purification plate, the process parameters of the atomic layer deposition use titanium tetraisopropoxide, bis(dimethylamino - 2 - propoxide)copper(II), and hydrogen peroxide or water as precursors, the deposition temperature is 130 - 175 °C, the evaporation temperatures of titanium tetraisopropoxide and bis(dimethylamino - 2 - propoxide)copper(II) are 60 - 80 °C and 65 - 100 °C respectively, the pulse times of titanium tetraisopropoxide and bis(dimethylamino - 2 - propoxide)copper(II) are 0.1 - 0.5 seconds, the interval is 1 - 10 seconds, the purge time is 10 - 20 seconds, the pulse time of hydrogen peroxide or water is 0.1 - 0.5 seconds, the purge time is 10 - 20 seconds, after 10 - 20 nm TiO2 coating cycles, 1 - 5 nm CuO x coating cycles follow, and the overall cycle ends at a thickness of 100 - 300 nm.

[0015] To better achieve the above object, the present invention further provides a rapid field sewage purification device, including a bracket, a water purification plate and a water collection mechanism mounted on the bracket, the water collection mechanism is mounted on the water purification plate and is installed inclined with respect to the water purification plate, and the water purification plate is the above water purification plate.

[0016] In the above rapid field sewage purification device, the bracket is a foldable lightweight bracket and is used to adjust the angle and position of the water purification plate.

[0017] In the above rapid field sewage purification device, the water collection mechanism includes a condensation collection plate and a water purification collection box, the upper end of the condensation collection plate is connected to the water purification plate and has an angle with respect to the water purification plate, and the water purification collection box is mounted at the lower end of the condensation collection plate.

[0018] In the above-mentioned outdoor sewage rapid purification device, the condensation collection plate is a lightweight organic glass plate with high light transmittance.

Advantages of the Invention

[0019] The technical effects of the present invention are as follows. The present invention combines the surface micro-texture forming and coating modification technologies on the surface of lightweight materials such as aluminum alloys to achieve rapid distillation purification of outdoor water shortages, poor water quality environments, and even human urine. By using solar energy for heating, heavy metals and bacterial contamination in water can be completely removed, realizing long-term and reusable purified water, and providing safe and reliable drinking water for the survival of workers in outdoor dry areas. It has the characteristics of high efficiency, excellent reusability, easy to carry and transport, low cost, and self-cleaning surface.

Brief Description of the Drawings

[0020] Hereinafter, the present invention will be described in detail with reference to the drawings and specific examples, but the present invention is not limited thereto.

[0021] [Figure 1] It is a schematic structural diagram of an outdoor sewage rapid purification device according to an embodiment of the present invention. [Figure 2A] It is a schematic structural diagram of a water purification plate according to an embodiment of the present invention. [Figure 2B] It is a cross-sectional view of Figure 2A. [Figure 3] It is a schematic diagram of the manufacturing process of a coated micro-textured aluminum plate according to an embodiment of the present invention. [Figure 4] It is a schematic diagram of an atomic layer deposition apparatus according to an embodiment of the present invention. [Figure 5] It is a diagram showing the temperature change over time of a water purification plate measured by using the infrared rapid thermal imaging method according to an embodiment of the present invention.

Modes for Carrying Out the Invention

[0022] The structural and operating principles of the present invention will be described in detail below with reference to the drawings.

[0023] This invention involves creating periodic, wave-like functional micro-grooves on the surface of an aluminum plate using a femtosecond laser, which have an excellent water and light wicking effect. Subsequently, using low-temperature, high-conformity atomic layer vacuum deposition technology, a photocatalytic and antibacterial oxide hard ceramic nanomultilayer functional thin film is uniformly fabricated on the inner and outer surfaces of the micro-grooves of the aluminum plate. By combining this with a water collection mechanism, a solar water purification device is formed that purifies outdoor wastewater and makes it suitable for drinking. This rapid outdoor wastewater purification device can thoroughly purify poor-quality outdoor water and excrement using sunlight or an artificial heat source. Even in the absence of sunlight, it can simulate sunlight using methods such as xenon lamp irradiation to achieve water purification, ensuring a supply of standard drinking water to field workers in water-scarce environments such as outdoors and in field operations. The photocatalytic thin film layer has properties that resist microbial bacteria, corrosion by acids and alkalis, and abrasion by mud and sand, guaranteeing the cycle life of the aluminum plate.

[0024] Figure 1 is a schematic diagram of the structure of an outdoor wastewater rapid purification device according to one embodiment of the present invention. The outdoor wastewater rapid purification device of the present invention includes a bracket 1, a water purification plate 2 mounted on the bracket 1, and a water collection mechanism 3. The water collection mechanism 3 is mounted on the water purification plate 2 and installed at an angle to the water purification plate 2, and the water purification plate 2 is used for heating and distilling purified water. The bracket 1 is preferably a foldable lightweight bracket 1 and is used to adjust the angle and position of the water purification plate 2. The water collection mechanism 3 includes a condensation collection plate 31 and a purified water collection box 32. The upper end of the condensation collection plate 31 is connected to the water purification plate 2 and is at an angle to the water purification plate 2, and the purified water collection box 32 is attached to the lower end of the condensation collection plate 31. The condensation collection plate 31 is preferably a lightweight organic glass plate with high light transmittance. The configuration, structure, relative positional relationships, connection relationships, operating principles, etc. of the other components of the outdoor wastewater rapid purification device are all relatively mature prior art and therefore will not be described here. The water purification plate 2 and its manufacturing method according to the present invention will be described in detail below.

[0025] Referring to Figures 2A and 2B, Figure 2A is a schematic structural diagram of a water purification plate 2 according to one embodiment of the present invention, and Figure 2B is a cross-sectional view of Figure 2A. In the water purification plate 2 of the present invention, the water purification plate 2 is a coated fine-textured aluminum plate 21, on the surface of the coated fine-textured aluminum plate 21 open, periodic, wavy microstructure grooves 22 are uniformly distributed, the microstructure grooves 22 extend longitudinally along the length direction of the coated fine-textured aluminum plate 21 and traverse the entire surface of the coated fine-textured aluminum plate 21, each microstructure groove 22 is periodic and orderly wavy along the length direction, and on the surface of the coated fine-textured aluminum plate 21 photocatalytic sterilizing TiO2 / CuO x A composite thin film 23 is coated onto the aluminum plate 21. The surface of the coated micro-textured aluminum plate 21 is black, the cross-section of the microstructure grooves 22 is rectangular, the groove width of the microstructure grooves 22 is 10 to 50 μm, the depth of the microstructure grooves 22 is 10 to 150 μm, and the spacing between adjacent microstructure grooves 22 is 30 to 100 μm. The wave pattern of each microstructure groove 22 is sinusoidal, the wavelength of the sinusoidal wave is 20 to 300 μm, and the amplitude of the sinusoidal wave is 50 to 100 μm.

[0026] In this embodiment, the TiO2 / CuO x The composite thin film 23 is a multilayer modulated thin film, and the TiO2 / CuO x Each modulated periodic layer of the composite thin film 23 consists of a 10-20 nm TiO2 coating 24 and a 1-5 nm CuO2 coating. x The coating 25 is a layered structure, and the TiO2 / CuO x The total coating thickness of the composite thin film 23 is 100-300 nm.

[0027] Referring to Figure 3, Figure 3 is a schematic diagram of the manufacturing process of a coated fine-textured aluminum plate 21 according to one embodiment of the present invention. The manufacturing method of the water purification plate 2 of the present invention includes the following steps.

[0028] Step S100 is to manufacture a coated micro-textured aluminum plate 21, and to process open periodic wavy microstructure grooves 22 into the polished aluminum plate having a surface roughness of less than 0.8 μm using femtosecond laser etching, wherein the microstructure grooves 22 extend longitudinally along the length direction of the coated micro-textured aluminum plate 21, traversing the entire surface of the coated micro-textured aluminum plate 21, and each of the microstructure grooves 22 is periodic and orderly wavy along the length direction, and to polish the 200 mm × 300 mm aluminum plate using polishing rayon and polishing powder to obtain a mirror-polished aluminum alloy panel. Step S200, wherein the coated fine-textured aluminum plate 21 obtained by femtosecond laser processing is subjected to ultrasonic and Ar plasma cleaning, and the polished aluminum plate can be cleaned with alcohol as a cleaning agent in an industrial ultrasonic cleaner, cleaned for 10 minutes and then dried, preferably with an argon gas inlet pressure of 0.05 MPa to 0.15 MPa and a processing time of 10 to 20 minutes. Step S300, a photocatalytic oxide hard ceramic coating TiO2 / CuO2 is applied to the surface of the plasma-cleaned coated fine-textured aluminum plate 21 and the inner surface of the microstructure grooves 22 using atomic layer deposition. x We fabricate nanomultilayer composite thin films, and this TiO2 / CuO x The nanomultilayer composite thin film Step S300 has antibacterial, corrosion-resistant, and abrasion-resistant properties.

[0029] The process parameters for femtosecond laser direct writing in step S100 are as follows: a fine groove texture with a groove width of 10-50 μm, a depth of 10-150 μm, and a groove spacing of 30-100 μm is created on the surface of the polished aluminum plate. The fine grooves are wavy along the length direction and penetrate the entire plane of the aluminum plate. The output power is 0.1-1 W, the wavelength is 600-800 nm, the repetition frequency is 1-10 kHz, and the scanning speed is 100 μm / s-1000 μm / s.

[0030] In step S300, TiO2 / CuO2 produced by the atomic layer deposition method x Nano multilayer composite thin films consist of a 10-20 nm TiO2 thin film layer topped with a 1-5 nm CuO2 layer. x Multiple layers of TiO2 thin films and CuO, in which thin film layers are stacked alternately. x The thin film contains the TiO2 / CuO x The thickness of the nanomultilayer composite thin film is 100-300 nm. The process parameters for atomic layer deposition are as follows: titanium tetraisopropoxide, bis(dimethylamino-2-propoxy)copper(II), and hydrogen peroxide or water are used as precursors; the deposition temperature is 130-175°C; the evaporation temperatures of titanium tetraisopropoxide and bis(dimethylamino-2-propoxy)copper(II) are 60-80°C and 65-100°C, respectively; the pulse time for titanium tetraisopropoxide and bis(dimethylamino-2-propoxy)copper(II) is 0.1-0.5 seconds, the interval is 1-10 seconds, the purge time is 10-20 seconds; the pulse time for hydrogen peroxide or water is 0.1-0.5 seconds, the purge time is 10-20 seconds; and each TiO2 / CuO x The periodic layer consists of a 10-20 nm thick TiO2 layer and a 1-5 nm thick CuO2 layer. x Composed of layers, with a 10-20nm TiO2 coating and a 1-5nm CuO2 coating after each cycle of 24 cycles. x The coating cycle 25 continues until the total coating thickness reaches 100-300 nm, at which point the entire cycle is complete.

[0031] In this embodiment, the femtosecond laser process parameters were set to output: 0.45 W, wavelength: 700 nm, and frequency: 1 kHz. After focusing with a 10x objective lens, a polished aluminum plate was etched at a speed of 500 μm / second and at intervals of 100 μm, etching a periodic microgroove structure onto the polished aluminum plate. The grooves produced with these parameters had a width of 13.8 μm and a depth of 54.9 μm. The grooves were processed in a sinusoidal shape in the longitudinal direction, with a wavelength of 100 μm and an amplitude of 50 μm. The aluminum alloy panel after femtosecond laser etching was subjected to an industrial ultrasonic cleaning machine, washed with alcohol as a cleaning agent for 10 minutes, and then dried. The aluminum plate with the wavy periodic grooves exhibits a rapid endothermic effect. The photothermal test results are shown in Figure 5, which shows the temperature change of a water purification plate over time, measured using infrared rapid thermal imaging according to one embodiment of the present invention.

[0032] The coated fine-textured aluminum plate 21 of the present invention has a black surface and excellent light absorption properties. The structure of the microstructure grooves 22 enables excellent wicking performance, and since the angle and position can be arbitrarily adjusted, the sunlight absorption efficiency and evaporation efficiency are improved. On top of it is a photocatalytic bactericidal TiO2 / CuO x Because it is coated with a composite thin film 23, its antibacterial, germicidal, corrosion-resistant, and abrasion-resistant properties are improved, and its long-term usability is enhanced. The coated fine-textured aluminum plate 21 can be integrated with a water collection mechanism 3 and a foldable lightweight bracket 1 to form a solar-powered outdoor wastewater rapid purification device. This device utilizes solar energy for heating, making it suitable for outdoor water scarcity and poor water quality environments, and can completely remove heavy metals and pollutants from the water.

[0033] Referring to Figure 4, which is a schematic diagram of an atomic layer deposition apparatus 4 according to one embodiment of the present invention, the atomic layer deposition apparatus 4 includes a vacuum chamber 41, a mechanical pump 42, a nitrogen gas source 43, an oxygen source bottle 44, a titanium source bottle 45, a copper source bottle 46, and a plurality of pneumatic valves 47. In this embodiment, titanium tetraisopropoxide is used as the titanium source precursor, bis(dimethylamino-2-propoxy)copper(II) is used as the copper source precursor, hydrogen peroxide is used as the oxygen source, and nitrogen gas is used as the purge gas in the atomic layer deposition process cycle. A fine-textured aluminum plate after ultrasonic cleaning is cleaned with argon plasma at an argon gas inlet pressure of 0.1 MPa and a processing time of 10 minutes. The laser-processed patterned aluminum plate after argon plasma cleaning is placed in the vacuum chamber 41 and the process parameters are set. The evaporation temperature of the titanium precursor is 65°C, the evaporation temperature of the copper precursor is 90°C, and the deposition temperature is 150°C. Different pneumatic valves 47 control different precursors. The titanium source bottle 45 for the titanium precursor is controlled by the first ALD pneumatic valve 471 and the second ALD pneumatic valve 472, the oxygen source bottle 44 for the hydrogen peroxide is controlled by the third ALD pneumatic valve 473, and the copper source bottle 46 for the copper precursor is controlled by the fourth ALD pneumatic valve 474 and the fifth ALD pneumatic valve 475. The manufacturing process is as follows:

[0034] Single-period TiO2 / CuO xDeposition of nanomultilayer modulated thin films: First, open the first ALD pneumatic valve 471 for 0.5 seconds, and after a 1-second interval, open the second ALD pneumatic valve 472 to inject the precursor for 0.5 seconds, purge nitrogen gas for 12 seconds to return the pressure to its original state, open the third ALD pneumatic valve 473, inject the oxygen source for 0.1 seconds, purge nitrogen gas for 12 seconds to return the pressure to its original state, and repeat this cycle 20 times. Then, open the fourth ALD pneumatic valve 474 for 0.5 seconds, and after a 1-second interval, open the fifth ALD pneumatic valve 475 to inject the precursor for 0.5 seconds, purge nitrogen gas for 12 seconds to return the pressure to its original state, open the third ALD pneumatic valve 473, inject the oxygen source for 0.1 seconds, purge nitrogen gas for 12 seconds to return the pressure to its original state, and repeat this cycle twice. The above procedure is for one TiO2 / CuO x The manufacturing cycle for the modulation period layer is constructed and repeated 300 times.

[0035] A coated fine-textured aluminum plate 21 manufactured by the above method is used as a water purification plate 2 to distill water, and is connected with a condensation collection plate 31, a purified water collection box 32, and a foldable lightweight bracket 1 with a locking structure to form an outdoor wastewater rapid purification device. The condensation collection plate 31 is installed at an angle above the water purification plate 2, and a portion of the water purification plate 2 is immersed below the liquid surface, allowing unpurified water to be transported by capillary action to the surface of the water purification plate 2, which can be installed at any angle. Due to its excellent light and heat absorption capacity, the coated fine-textured aluminum plate 21 uses solar energy to heat the water on its surface, and the evaporated water vapor comes into contact with the upper inclined organic glass condensation collection plate 31 to form condensed water 5, which flows into the water collection box after cooling.

[0036] This invention utilizes the entire spectrum of sunlight and, even in the absence of sunlight, can purify wastewater through a photo-heat-evaporation process using a pseudo-sunlight source such as a xenon lamp. This is an energy-saving and environmentally friendly green water purification technology with advantages such as reusability, ease of transport, and low cost. By creating a micro-nano structure on the surface of an aluminum plate and precisely manufacturing and forming it using a femtosecond laser with extremely low thermal effects, superhydrophilicity, rapid water absorption, and super light absorption are achieved. Water can be evaporated using solar heat to purify wastewater. Since wastewater absorption, sunlight absorption, and water evaporation all occur on the same surface, evaporation efficiency is greatly improved. Using atomic layer deposition (ALD) technology, a nanoscale superhydrophilic, visible light transmittance, and self-cleaning copper-doped nanotitanium dioxide photocatalytic thin film is created on the surface of a textured aluminum plate, providing a certain level of surface self-cleaning capability and hydrophilic stability. Water on the surface of the superhydrophilic and super-absorbent aluminum plate is in a special physical and chemical state, resulting in a very high evaporation rate. By adjusting the angle of the coated, finely textured aluminum plate 21, the beam of sunlight can be easily adjusted to control the evaporation and water treatment rates. Suitable for water environments and conditions such as water scarcity, wastewater, and even human urine, it possesses excellent properties such as lightweight, corrosion resistance, antibacterial properties, and antifouling properties. Because it can absorb moisture at ultra-high speed and continuously, and efficiently evaporate and distill to produce pure water, it reliably meets the critical need for a standard drinking water supply for workers in water-scarce environments in the field and in battlefields.

[0037] Of course, the present invention can have many other embodiments. Those skilled in the art can make various corresponding changes and modifications based on the present invention without departing from the spirit and essence of the invention, all of which should be within the scope of protection of the claims of the present invention. [Explanation of Symbols]

[0038] 1 Bracket 2. Water purification plate 21 Coated fine-textured aluminum sheet 22 Microstructure grooves 23 TiO2 / CuO x Composite thin film 24 TiO2 coating 25 CuO x coating 3 Water collection mechanism 31 Condensation collection plate 32 Water purification collection box 4 Atomic layer deposition equipment 41 Vacuum Chamber 42 Mechanical pumps 43 Nitrogen gas source 44 Oxygen Source Bottles 45 Titanium Source Bottle 46 Copper Source Bottle 47. Pneumatic valve 471 1st ALD pneumatic valve 472 2nd ALD pneumatic valve 473 3rd ALD pneumatic valve 474 4th ALD pneumatic valve 475 5th ALD pneumatic valve 5. Condensate

Claims

1. A water purification plate, wherein the water purification plate is a coated fine-textured aluminum plate, the surface of the coated fine-textured aluminum plate has open, periodic, wavy microstructure grooves uniformly distributed, the microstructure grooves extend longitudinally along the length direction of the coated fine-textured aluminum plate and traverse the entire surface of the coated fine-textured aluminum plate, each microstructure groove is periodic and orderly wavy along the length direction, and the surface of the coated fine-textured aluminum plate has photocatalytic bactericidal TiO ２ / CuO ｘ A water purification plate characterized by being coated with a composite thin film.

2. The water purification plate according to claim 1, characterized in that the cross-section of the microstructure groove is rectangular, the groove width of the microstructure groove is 10 to 50 μm, the depth of the microstructure groove is 10 to 150 μm, and the spacing between adjacent microstructure grooves is 30 to 100 μm.

3. The water purification plate according to claim 1 or 2, characterized in that the wave-like shape of each of the microstructured grooves is sinusoidal, the wavelength of the sinusoidal wave is 20 to 300 μm, and the amplitude of the sinusoidal wave is 50 to 100 μm.

4. The TiO ２ / CuO ｘ composite thin film is a multilayer modulated structure thin film, and the TiO ２ / CuO ｘ coating of each modulation period layer of the composite thin film is a structure in which a 10-20 nm TiO ２ coating and a 1-5 nm CuO ｘ coating are laminated, and the TiO ２ / CuO ｘ The water purification plate according to claim 1 or 2, wherein the total coating thickness of the composite thin film is 100-300 nm.

5. The water purification plate according to claim 1 or 2, characterized in that the surface of the coated fine-textured aluminum plate is black.

6. A method for manufacturing a water purification plate, Step S100 involves manufacturing a coated micro-textured aluminum plate, and using a femtosecond laser to process open, periodic, wavy microstructure grooves into a polished aluminum plate having a surface roughness of less than 0.8 μm, wherein the microstructure grooves extend longitudinally along the length of the coated micro-textured aluminum plate, traversing the entire surface of the coated micro-textured aluminum plate, and each of the microstructure grooves is periodic and orderly wavy along the length. Step S200 involves ultrasonic and Ar plasma treatment of the coated fine-textured aluminum plate obtained by femtosecond laser processing, Using atomic layer deposition, the photocatalyst TiO is applied to the surface and inner surface of the microstructure grooves of the coated microtextured aluminum plate. ２ / CuO ｘ A method for manufacturing a water purification plate, characterized by comprising step S300 for manufacturing a nanomultilayer composite thin film.

7. The method for manufacturing a water purification plate according to claim 6, characterized in that the process parameters for femtosecond laser processing in step S100 are an output of 0.1 to 1 W, a wavelength of 600 to 800 nm, a repetition rate of 1 to 10 kHz, and a scanning speed of 100 μm / s to 1000 μm / s.

8. In step S300, TiO produced by the atomic layer deposition method ２ / CuO ｘ Nano multilayer composite thin films are made of TiO2 with a thickness of 10-20 nm. ２ A thin film layer with 1-5 nm of CuO ｘ Multiple layers of TiO, in which thin film layers are stacked alternately. ２ Thin film and CuO ｘ Including a thin film, the TiO ２ / CuO ｘ A method for manufacturing a water purification plate according to claim 6 or 7, characterized in that the thickness of the nanomultilayer composite thin film is 100 to 300 nm.

9. The process parameters for the atomic layer deposition are as follows: titanium tetraisopropoxide, bis(dimethylamino-2-propoxy)copper(II), and hydrogen peroxide or water are used as precursors; the deposition temperature is 130-175°C; the evaporation temperatures of titanium tetraisopropoxide and bis(dimethylamino-2-propoxy)copper(II) are 60-80°C and 65-100°C, respectively; the pulse time for titanium tetraisopropoxide and bis(dimethylamino-2-propoxy)copper(II) is 0.1-0.5 seconds, the interval is 1-10 seconds, the purge time is 10-20 seconds; the pulse time for hydrogen peroxide or water is 0.1-0.5 seconds, the purge time is 10-20 seconds; and the deposition layer is 10-20 nm in TiO ２ After the coating cycle, 1-5 nm of CuO ｘ The method for manufacturing a water purification plate according to claim 8, characterized in that the coating cycle continues and the entire cycle is completed with a thickness of 100 to 300 nm.

10. An outdoor wastewater rapid purification device comprising a bracket, a water purification plate mounted on the bracket, and a water collection mechanism, wherein the water collection mechanism is mounted on the water purification plate and installed at an inclination with respect to the water purification plate, and the water purification plate is the water purification plate described in any one of claims 1 to 5.

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