A wastewater treatment device for high-salinity wastewater

Abstract

This utility model discloses a wastewater treatment device for high-salinity wastewater, relating to the field of wastewater treatment technology. It includes: a wastewater treatment chamber, a wastewater inlet pipe, and an evaporation curtain. A base plate is fixed to the bottom of the wastewater treatment chamber, forming a wastewater crystallization circulation pool below the base plate. The base plate has a perforated mesh plate. The wastewater inlet pipe is located at the top of the wastewater treatment chamber and has a wastewater outlet. The evaporation curtain is hung on the wastewater inlet pipe, allowing wastewater flowing from the outlet to flow down the evaporation curtain, pass through the perforated mesh plate, and enter the wastewater crystallization circulation pool. The evaporation curtain is coated with a photo-nano layer. This utility model utilizes the principle that wastewater flows down the evaporation curtain under gravity, is treated by the photo-nano layer, and then enters the wastewater crystallization circulation pool, effectively promoting water evaporation and salt crystallization, forming a simple yet highly efficient wastewater treatment system.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and more specifically to a wastewater treatment device for high-salt wastewater. Background Technology

[0002] High-salinity wastewater typically originates from power plant desulfurization wastewater, pharmaceutical and chemical wastewater, and coal chemical wastewater. This type of wastewater contains large amounts of pollutants such as salts, organic matter, and heavy metals. Direct discharge of such wastewater can damage the environment, including soil salinization, water eutrophication, and ecosystem imbalance, making it difficult to treat.

[0003] Currently, membrane treatment is a common technology for treating high-salinity wastewater, using selectively permeable membranes to separate water molecules and other impurities. However, membrane treatment suffers from problems such as membrane fouling and flux decline, requiring regular membrane cleaning and replacement, which not only increases operating costs but also leads to increased maintenance workload. Furthermore, membrane treatment has high requirements for influent water quality; impurities in the wastewater, such as hardness ions and organic matter, can easily cause membrane clogging and performance degradation, thus necessitating complex pretreatment, which further increases system complexity and investment costs.

[0004] Evaporation crystallization technology is one of the commonly used methods to achieve zero discharge of high-salinity wastewater. While direct evaporation crystallization can effectively remove water from wastewater and crystallize salts, it has high operating costs, large equipment investment, and requires a large area. Natural evaporation is greatly affected by weather and other natural conditions, and also requires a large area, leading to waste in areas with limited land resources. Furthermore, evaporation ponds are not airtight devices, allowing volatile components in concentrated brine to easily enter the atmosphere and cause air pollution. Improper handling of the side and bottom anti-seepage works can also pollute the soil and groundwater. Although thermal evaporation crystallization technology is relatively mature, it has high energy consumption, especially when treating large-scale high-salinity wastewater, and also suffers from scaling problems, affecting equipment lifespan and operating efficiency.

[0005] Biological treatment technology has some applications for high-salinity wastewater with relatively low salinity and good biodegradability. However, it is sensitive to wastewater with high salinity and containing inhibitory substances, which can easily suppress the activity of microorganisms, significantly reducing treatment efficiency and even potentially causing the biological treatment system to fail. Furthermore, biological treatment processes typically require long reaction times and large land areas, and are poorly adaptable to changes in wastewater quality and quantity. Operation and management require specialized knowledge and experience; improper operation can negatively impact treatment effectiveness. Other treatment technologies, such as aerated biofilters and contact oxidation processes within biofilm technology, can remove organic matter and some salts to a certain extent when treating high-salinity wastewater, but they often fail to achieve ideal zero-discharge treatment of high-salinity wastewater and frequently require combination with other technologies.

[0006] Given the numerous shortcomings of existing high-salinity wastewater treatment technologies, the development of a new type of wastewater treatment device is essential. This new device aims to improve treatment efficiency, reduce operating costs, minimize land occupation, and enhance adaptability to different water qualities. This will not only help solve the environmental problems associated with high-salinity wastewater treatment but also promote the development of related technologies, achieve resource recycling, and support sustainable development. Utility Model Content

[0007] In view of this, the present invention provides a wastewater treatment device for high-salt wastewater, which aims to solve the above-mentioned technical problems.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A wastewater treatment device for high-salinity wastewater, comprising:

[0010] A wastewater treatment chamber, the bottom of which is fixed with a base plate, a wastewater crystallization circulation pool is formed below the base plate, and the base plate has a perforated mesh plate;

[0011] A sewage inlet pipe is located at the top of the sewage treatment chamber, and a sewage outlet is provided on the sewage inlet pipe;

[0012] An evaporation curtain is hung on the sewage inlet pipe, so that the sewage flowing out of the sewage outlet through the sewage inlet pipe flows down the evaporation curtain and passes through the perforated mesh plate into the sewage crystallization circulation pool. The evaporation curtain is coated with a light nano-layer.

[0013] Through the above technical solution, this utility model forms a simple yet highly efficient wastewater treatment system by setting up a base plate, a perforated mesh plate, a wastewater inlet pipe, a wastewater outlet, and an evaporation curtain hanging on the wastewater inlet pipe in the wastewater treatment chamber, and coating the evaporation curtain with a photonano layer. Wastewater flows down the evaporation curtain under gravity, and after being treated by the photonano layer, it enters the wastewater crystallization circulation tank, effectively promoting water evaporation and salt crystallization. The application of the photonano layer reduces the surface tension of water, allowing water to quickly spread on the surface of the evaporation curtain to form an extremely thin water film, thereby increasing the evaporation area. Simultaneously, the photocatalytic effect generated by the photonano materials under light further enhances the evaporation rate of water molecules, improving evaporation efficiency. After evaporation, the salt in the wastewater gradually accumulates and crystallizes in the wastewater crystallization circulation tank, achieving salt separation and recovery, contributing to zero discharge of high-salt wastewater and reducing environmental pollution.

[0014] Preferably, in the above-mentioned wastewater treatment device for high-salt wastewater, blowers are installed at the four corners of the top of the wastewater crystallization circulation tank, and air inlets are opened on the bottom plate. The air from the blowers rises through the air inlets and the perforated mesh plate.

[0015] Blowers are installed at the four corners of the top of the wastewater crystallization circulating water tank, and air vents are opened on the bottom plate. The airflow from the blowers rises through the vents and the perforated mesh plate, further promoting water evaporation. The airflow carries away water molecules from the surface of the water film, reducing the water vapor concentration and increasing the driving force for evaporation, thereby improving the evaporation efficiency. The addition of the blower system makes the entire wastewater treatment process more efficient, shortens the treatment time, and increases the treatment capacity of the device, enabling it to better adapt to the treatment needs of high-salinity wastewater of different scales.

[0016] Preferably, in the above-mentioned wastewater treatment device for high-salt wastewater, the evaporation structure consisting of the wastewater inlet pipe and the evaporation curtain is provided in multiple sets in the wastewater treatment chamber, and the multiple evaporation curtains are arranged in parallel at intervals.

[0017] By installing multiple evaporation structures consisting of wastewater inlet pipes and evaporation curtains within the wastewater treatment chamber, and arranging these curtains in parallel at intervals, the wastewater treatment area and efficiency are significantly increased. The simultaneous operation of multiple evaporation curtains allows for the processing of larger flow rates of wastewater, improving the overall treatment capacity of the system and making it suitable for large-scale, high-salinity wastewater treatment scenarios. The parallel and spaced evaporation curtains ensure a more even distribution of wastewater within the treatment chamber, preventing localized overload and guaranteeing effective evaporation and treatment at every point, thus improving the uniformity and stability of the treatment effect.

[0018] Preferably, in the above-mentioned wastewater treatment device for high-salt wastewater, the perforated mesh plate is in the shape of a long strip and is provided in multiple forms on the bottom plate, each corresponding to the evaporation curtain.

[0019] The perforated mesh panels are elongated and multiple are installed on the base plate, each corresponding to an evaporation curtain. This design allows wastewater to drip precisely and be evenly distributed onto the perforated mesh panels. The perforated mesh panel design facilitates further dispersion and evaporation of wastewater, while also aiding in the collection and treatment of solid salts after wastewater crystallization. The corresponding arrangement of multiple perforated mesh panels with the evaporation curtain enhances the stability and rationality of the entire wastewater treatment chamber's internal structure, improving the reliability of the device's operation.

[0020] Preferably, in the above-mentioned wastewater treatment device for high-salt wastewater, a plurality of air vents are provided between two adjacent perforated mesh plates of the bottom plate.

[0021] Multiple air vents are created between adjacent perforated mesh panels on the base plate, allowing the air supplied by the blower to be more evenly distributed within the wastewater treatment chamber. This layout ensures that the airflow effectively reaches the vicinity of each evaporation curtain, further enhancing the airflow's effect on water evaporation and improving evaporation efficiency. The rationally distributed air vents make full use of the space inside the wastewater treatment chamber, avoiding the space-consuming nature of ductwork design, thus improving the overall space utilization of the device and making it more compact and efficient.

[0022] Preferably, in the above-mentioned wastewater treatment device for high-salt wastewater, a circulating water pipe is connected between the bottom of the wastewater crystallization circulating water tank and the wastewater inlet pipe, and a circulating water pump is installed on the circulating water pipe.

[0023] By connecting the bottom of the wastewater crystallization circulation tank to the wastewater inlet pipe and installing a circulation pump on the circulation pipe, wastewater recycling is achieved. Incompletely evaporated wastewater can be repeatedly evaporated through the evaporation curtain until all water is evaporated and salts are fully crystallized, improving the utilization efficiency of water resources and the system. The recycling system allows for the full recovery and reuse of water, reducing water waste. Simultaneously, recycling enables more thorough salt separation, improving the purity and quality of salt crystals, facilitating subsequent resource recovery and reuse.

[0024] Preferably, in the above-mentioned wastewater treatment device for high-salt wastewater, the wastewater inlet pipe is also connected to a main wastewater pipe for supplying wastewater.

[0025] The wastewater inlet pipe connects to the main wastewater pipe, ensuring a stable supply of wastewater to the wastewater treatment unit, guaranteeing continuous operation, and improving treatment efficiency and stability. The design of the main wastewater pipe allows the wastewater treatment unit to be flexibly integrated into existing wastewater treatment systems, facilitating collaborative work with other wastewater treatment facilities and enhancing the overall flexibility and scalability of the wastewater treatment system.

[0026] Preferably, in the above-mentioned wastewater treatment device for high-salt wastewater, the top of the evaporation curtain is wrapped around the wastewater inlet pipe.

[0027] The design of the evaporation curtain being wrapped around the top of the sewage inlet pipe makes installation of the evaporation curtain simpler and faster, and also facilitates replacement and maintenance when needed, reducing maintenance costs and operational complexity. This wrapping method ensures a tight connection between the evaporation curtain and the sewage inlet pipe, preventing displacement or loosening of the evaporation curtain during sewage treatment, thus improving the structural stability and reliability of the entire device.

[0028] Preferably, in the above-mentioned wastewater treatment device for high-salt wastewater, the photo-nano layer is made of nano-titanium dioxide material.

[0029] Choosing nano-titanium dioxide as the material for the photo-nanolayer is cost-effective, widely available, and easy to obtain and prepare, thus reducing the overall manufacturing cost of the device and making it more cost-effective and easier to promote and apply. Nano-titanium dioxide exhibits excellent photocatalytic performance; under light irradiation, it can effectively reduce the surface tension of water, promote water evaporation, and decompose some organic pollutants in wastewater, thereby purifying the water and improving the overall treatment effect of the device.

[0030] As can be seen from the above technical solution, compared with the prior art, this utility model discloses a wastewater treatment device for high-salinity wastewater, which has the following beneficial effects:

[0031] 1. Simple and efficient structure: The overall device has a simple structural design. Through the organic combination of key components such as the sewage treatment chamber, base plate, perforated mesh plate, sewage inlet pipe, and evaporation curtain, a highly efficient sewage treatment system is formed. Under the action of gravity, sewage flows down the evaporation curtain and enters the sewage crystallization circulation pool after being treated by the photo-nano layer, effectively promoting water evaporation and salt crystallization.

[0032] 2. Improved Evaporation Efficiency: The application of photo-nanolayers can reduce the surface tension of water, allowing water to spread rapidly on the surface of the evaporation curtain to form an extremely thin water film, increasing the evaporation area. Simultaneously, the photocatalytic effect of photo-nanomaterials under light further enhances the evaporation rate of water molecules.

[0033] 3. Promote salt crystallization: As water evaporates continuously, salt gradually accumulates and crystallizes in the wastewater crystallization circulation pool, achieving salt separation and recovery, realizing zero discharge of high-salt wastewater, and reducing environmental pollution.

[0034] 4. Enhanced treatment effect: The installation of blowers and circulating water pumps further promotes evaporation and circulation. The blowers can remove water molecules from the surface of the water film, reducing the water vapor concentration and increasing the driving force for evaporation; the circulating water pumps circulate the wastewater, improving treatment efficiency and the purity of salt crystallization.

[0035] 5. Improve space utilization and processing capacity: Multiple evaporation structures and multiple parallel-spaced evaporation curtains increase the processing area and improve the processing capacity, making the sewage evenly distributed and ensuring uniform and stable treatment results.

[0036] 6. Optimized layout and reduced costs: Using nano-titanium dioxide as the optical nanolayer material has the advantages of low cost, wide availability, and easy preparation, which reduces the manufacturing cost of the device, improves the cost-effectiveness, and makes it easier to promote and apply.

[0037] 7. Flexible and Stable Operation: The main sewage pipe ensures a stable sewage supply and guarantees continuous operation. Simultaneously, the device can be flexibly integrated into existing sewage treatment systems, working in conjunction with other facilities to improve system flexibility and scalability. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0039] Figure 1 The attached figure is a half-sectional schematic diagram of the wastewater treatment device for high-salt wastewater provided by this utility model;

[0040] Figure 2 The attached figure shows the invention provided by this utility model. Figure 1 A magnified view of part A in the middle;

[0041] Figure 3 The attached figure shows the invention provided by this utility model. Figure 1 A magnified view of part B in the middle;

[0042] Figure 4 The attached figure is a main sectional view of the wastewater treatment device for high-salt wastewater provided by this utility model.

[0043] in:

[0044] 1- Wastewater treatment room;

[0045] 11-Base plate; 111-Perforated mesh plate; 112-Air vent; 12-Wastewater crystallization circulation tank;

[0046] 2- Sewage inlet pipe;

[0047] 21-Sewage outlet;

[0048] 3-Evaporation curtain;

[0049] 4- Blower;

[0050] 5- Circulating water pipe;

[0051] 6- Circulating water pump;

[0052] 7-Main sewage pipe. Detailed Implementation

[0053] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0054] See appendix Figure 1 To be continued Figure 3 This utility model discloses a wastewater treatment device for high-salinity wastewater, comprising:

[0055] Wastewater treatment chamber 1, with a bottom plate 11 fixed at the bottom of the wastewater treatment chamber 1, and a wastewater crystallization circulation pool 12 formed below the bottom plate 11, with a perforated mesh plate 111 on the bottom plate 11;

[0056] Wastewater inlet pipe 2 is located at the top of wastewater treatment chamber 1, and wastewater outlet 21 is provided on wastewater inlet pipe 2;

[0057] Evaporation curtain 3 is hung on sewage inlet pipe 2, so that sewage flowing out of sewage outlet 21 from sewage inlet pipe 2 flows down along evaporation curtain 3 and passes through perforated mesh plate 111 into sewage crystallization circulation pool 12. Evaporation curtain 3 is coated with light nano layer.

[0058] See appendix Figure 4 Blowers 4 are installed at the four corners of the top of the wastewater crystallization circulation tank 12, and air inlets 112 are opened on the bottom plate 11. The air from the blowers 4 rises through the air inlets 112 and the perforated mesh plate 111.

[0059] To further optimize the above technical solution, multiple sets of the evaporation structure consisting of the sewage inlet pipe 2 and the evaporation curtain 3 are installed in the sewage treatment chamber 1, and the multiple evaporation curtains 3 are arranged in parallel at intervals.

[0060] To further optimize the above technical solution, multiple perforated mesh panels 111 are provided on the base plate 11 in the form of long strips, and each corresponds to the evaporation curtain 3.

[0061] To further optimize the above technical solution, multiple air vents 112 are provided between two adjacent perforated mesh plates 111 of the base plate 11.

[0062] To further optimize the above technical solution, a circulating water pipe 5 is connected between the bottom of the sewage crystallization circulating water tank 12 and the sewage inlet pipe 2, and a circulating water pump 6 is installed on the circulating water pipe 5.

[0063] To further optimize the above technical solution, the sewage inlet pipe 2 is also connected to the main sewage pipe 7 for supplying sewage.

[0064] To further optimize the above technical solution, the top of the evaporation curtain 3 is wrapped around the sewage inlet pipe 2.

[0065] In this embodiment, the photo-nanolayer is made of nano-titanium dioxide material. Nano-titanium dioxide is suitable because it is inexpensive, widely available, and easy to prepare. It can spread water molecules through surface energy and wettability or photothermal effects. Specifically, high surface energy and special surface structure allow water to spread rapidly, while the photothermal effect reduces the surface tension of water and accelerates the movement of water molecules, promoting their spread.

[0066] In this embodiment, the wastewater is treated into small water molecule clusters before entering the sewage inlet pipe 2. Specifically, the treatment method can be as follows:

[0067] Ultrasonic technology: When ultrasound acts on water, it produces a cavitation effect. During the growth and collapse of cavitation bubbles, strong local shock waves and microjets are generated. This intense physical effect can break the large hydrogen bond network between water molecules, causing large water molecule clusters to break down into smaller water molecule clusters.

[0068] Nanomaterial catalysis: Some nanomaterials, such as nano-titanium dioxide and nano-zinc oxide, have high specific surface areas and unique physicochemical properties. When wastewater flows over the surface of these nanomaterials, the active sites on the nanomaterial surface interact with water molecules, adsorbing and activating them, thereby breaking some of the hydrogen bonds between water molecules and forming small water molecule clusters.

[0069] This embodiment uses nanoscale amphoteric nanomaterials as the evaporation surface, allowing water molecules to spread out instantly and form an extremely thin water film. This can increase the evaporation interface area by orders of magnitude.

[0070] This embodiment reduces the heat of vaporization enthalpy. The known heat of vaporization enthalpy of water is 2257 J / g. After treatment with nanotechnology, the heat of vaporization enthalpy of water is reduced to 1165 J / g, a reduction of 50%. Therefore, water evaporation in low-temperature environments becomes a reality.

[0071] In addition, the raw water is activated. The water droplets are large molecular clusters composed of more than ten water molecules with a degree of association of thirty-six. After treatment, the water molecules are transformed into activated small water molecule clusters composed of 5-6 molecules, which are also called activated water. Activated water is very easy to leave the interface and be carried away by the air (hydrogen bonds break). This step alone reduces evaporation energy consumption by more than 30%.

[0072] This embodiment can also absorb residual heat from the outside environment to raise the temperature, and then utilize the temperature difference between water and the environment to allow water to adhere to the surface of the material and evaporate. This material evaporates water at a rate of 1.5-3 kg per square meter per hour, which is 3-5 times the evaporation efficiency of natural evaporation (natural evaporation is 0.25-0.5 kg per square meter per hour). The degree of association of water molecules (H2O) is 130 at 0 degrees Celsius, but only 60 at 70 degrees Celsius. This means that as the temperature rises, the degree of association decreases, increasing the surface tension of the water and causing rapid evaporation.

[0073] This embodiment combines existing patented technology (a device for superimposed oxidation to treat VOCs and PM2.5 202421218398.1). In the low-temperature evaporation process, due to the different water quality of each enterprise, the harmful substances containing volatiles can be treated by this device to meet environmental protection requirements or local emission standards.

[0074] The perfect combination of the above-mentioned systems and sciences makes it possible to apply the dual-low nano zero-emission technology to the treatment of industrial high-salt wastewater.

[0075] The wastewater treatment process of the high-salinity wastewater treatment device provided in this embodiment is as follows:

[0076] Wastewater introduction: High-salinity wastewater enters the wastewater inlet pipe 2 through the main wastewater pipe 7. Before entering the wastewater inlet pipe 2, the wastewater undergoes preliminary treatment to convert it into small water molecule clusters. Preliminary treatment methods can include ultrasonic technology, electrolysis, or nanomaterial catalysis.

[0077] Wastewater spraying and evaporation: Wastewater inlet pipe 2 evenly sprays wastewater onto the evaporation curtain 3 suspended above it. The evaporation curtain 3 is made of corrosion-resistant fiber material and coated with a nano-titanium dioxide nano-layer. Under the influence of gravity, the wastewater flows downward along the evaporation curtain 3, and during the flow, the wastewater comes into contact with the nano-titanium dioxide nano-layer on the evaporation curtain 3. Under light conditions, the nano-titanium dioxide nano-layer absorbs light energy, producing a photocatalytic effect, reducing the surface tension of the water, and causing the water to spread rapidly on the surface of the evaporation curtain 3, forming an extremely thin water film, increasing the evaporation area. At the same time, blowers 4 installed at the four corners of the top of the wastewater treatment chamber 1 blow air inward, and the air is blown upward through the air vents 112 and the perforated mesh plate 111 on the base plate 11, further promoting the evaporation of water.

[0078] Wastewater Recycling and Crystallization: After evaporation, the residual wastewater passes through the perforated mesh plate 111 and falls into the wastewater crystallization circulation tank 12 below the base plate 11. The wastewater in the wastewater crystallization circulation tank 12 is then pumped back into the wastewater inlet pipe 2 through the circulation pipe 5 and the circulation pump 6 for recycling. During the recycling process, as the water continues to evaporate, the salt in the wastewater gradually accumulates and crystallizes in the wastewater crystallization circulation tank 12.

[0079] Collection of crystallized salt: When the salt crystallization in the wastewater crystallization circulation tank 12 reaches a certain amount, the wastewater circulation treatment is stopped, and the crystallized salt is collected from the wastewater crystallization circulation tank 12 to achieve zero discharge treatment of high-salt wastewater.

[0080] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0081] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A wastewater treatment device for high-salinity wastewater, characterized in that, include: Wastewater treatment chamber (1), the bottom of which is fixed with a base plate (11), a wastewater crystallization circulation pool (12) is formed below the base plate (11), and the base plate (11) has a perforated mesh plate (111); Wastewater inlet pipe (2) is located at the top of the wastewater treatment chamber (1), and a wastewater outlet (21) is provided on the wastewater inlet pipe (2); An evaporation curtain (3) is hung on the sewage inlet pipe (2), so that the sewage flowing out of the sewage inlet pipe (2) through the sewage outlet (21) flows down the evaporation curtain (3) and passes through the perforated mesh plate (111) into the sewage crystallization circulation pool (12). The evaporation curtain (3) is coated with a light nano-layer.

2. The wastewater treatment device for high-salinity wastewater according to claim 1, characterized in that, Blowers (4) are installed at the four corners of the top of the wastewater crystallization circulation pool (12), and air inlets (112) are opened on the bottom plate (11). The air from the blowers (4) rises through the air inlets (112) and the perforated mesh plate (111).

3. The wastewater treatment device for high-salinity wastewater according to claim 2, characterized in that, The evaporation structure consisting of the sewage inlet pipe (2) and the evaporation curtain (3) is provided in multiple sets in the sewage treatment chamber (1), and the multiple evaporation curtains (3) are arranged in parallel at intervals.

4. The wastewater treatment device for high-salinity wastewater according to claim 3, characterized in that, The perforated mesh plate (111) is long and has multiple pieces on the base plate (11), and each piece corresponds to the evaporation curtain (3).

5. The wastewater treatment device for high-salinity wastewater according to claim 4, characterized in that, Multiple air vents (112) are provided between two adjacent perforated mesh plates (111) of the base plate (11).

6. The wastewater treatment device for high-salinity wastewater according to claim 1, characterized in that, A circulating water pipe (5) is connected between the bottom of the sewage crystallization circulating water tank (12) and the sewage inlet pipe (2), and a circulating water pump (6) is installed on the circulating water pipe (5).

7. A wastewater treatment device for high-salinity wastewater according to claim 6, characterized in that, The sewage inlet pipe (2) is also connected to the main sewage pipe (7) for supplying sewage.

8. The wastewater treatment device for high-salinity wastewater according to claim 1, characterized in that, The top of the evaporation curtain (3) is wrapped around the sewage inlet pipe (2).

9. A wastewater treatment device for high-salinity wastewater according to claim 1, characterized in that, The optical nanolayer is made of nano-titanium dioxide material.

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