Halophilic organism-based high-salinity wastewater treatment device and treatment method thereof

Abstract

The invention provides a halophilic organism-based high-salinity wastewater treatment device and a treatment method thereof, and relates to the technical field of coal-fired power plant high-salinity wastewater treatment.The halophilic organism-based high-salinity wastewater treatment device comprises a high-salinity wastewater pool, halophilic plants or salt-tolerant plants are planted in the high-salinity wastewater pool, halophilic microorganisms are added into the high-salinity wastewater pool, and one end of the high-salinity wastewater pool is connected with a water supplementing pipeline; the downstream of the other end of the high-salinity wastewater pool is connected with a drainage pipeline; water quality monitors are arranged on the water supplementing pipeline and the drainage pipeline; the bottom of the high-salinity wastewater pool is covered with a soil layer, a sludge scraper is erected above the soil layer, a sludge pool is arranged at the tail end of the sludge scraper and located on one side of the soil layer, and the sludge pool is communicated with a sludge treatment assembly, so that the problems of secondary pollution of chemical agents, attenuation of membrane flux, frequent maintenance of equipment and high operation and maintenance cost in the prior art are solved; low-cost desalination treatment is achieved, sludge and halophilic plants generated in the biological desalination process can be used as fuel for blending combustion, and carbon emission is reduced.

Description

Technical Field

[0001] This invention relates to the field of high-salinity wastewater technology from coal-fired power plants, and in particular to a high-salinity wastewater treatment device and method based on halophilic organisms. Background Technology

[0002] Coal-fired power plants, as an important source of electricity, generate large amounts of high-salinity wastewater, including desulfurization wastewater, chemical water treatment process wastewater, ash flushing wastewater, and drainage from circulating cooling systems. Because this type of wastewater contains high concentrations of inorganic salts, direct discharge without effective treatment will not only cause a serious waste of water resources but also damage the physical and chemical properties of water bodies and soil.

[0003] In existing technologies, the desalination treatment of high-salinity wastewater mainly employs conventional chemical dosing and membrane separation desalination processes. Chemical dosing involves adding specific chemical agents to the high-salinity wastewater, causing salt ions in the water to react chemically and form precipitates, which are then removed through solid-liquid separation. Membrane separation relies on the selective permeability of membrane modules such as reverse osmosis and nanofiltration to separate salts from water molecules, thereby obtaining purified water with low salt content.

[0004] However, while existing treatment methods can achieve a certain degree of desalination, chemical dosing requires the continuous addition of large amounts of chemicals, resulting in high operating costs due to chemical consumption and the generation of secondary sludge during the reaction process. Membrane separation methods, on the other hand, are susceptible to fouling and scaling from impurities in high-salinity wastewater, leading to a rapid decline in membrane flux and requiring frequent cleaning and maintenance. This places high demands on the expertise of maintenance personnel, and the replacement cost of membrane modules is exorbitant, resulting in excessively high overall equipment investment and operating costs. Therefore, existing technologies generally suffer from complex system configurations, high operating costs, and significant maintenance difficulties. Summary of the Invention

[0005] The purpose of this invention is to provide a high-salt wastewater treatment device and method based on halophilic organisms, so as to alleviate the technical problems of secondary pollution by chemical agents, membrane flux decline, and high operation and maintenance costs that exist in the prior art.

[0006] The high-salt wastewater treatment device based on halophilic organisms provided by this invention includes: The high-salt wastewater pond is planted with halophilic or salt-tolerant plants and halophilic microorganisms. One end of the high-salt wastewater pond is connected to a water supply pipe, and the other end of the high-salt wastewater pond is connected to a drainage pipe downstream. Water quality monitors are installed on both the water supply pipe and the drainage pipe. The bottom of the high-salt wastewater pool is covered with a layer of soil, and a sludge scraper is installed above the soil layer. The end of the sludge scraper is located on one side of the soil layer, and the sludge pool is connected to a sludge treatment component.

[0007] Furthermore, a water supply pump is installed on the water supply pipe, and a drainage pump is installed on the drainage pipe; Sludge treatment components include sludge pipes, sludge pumps, and sludge dewatering machines; The sludge pipe connects to the sludge tank, and the end of the sludge pipe away from the sludge tank connects to the boiler for co-firing. A sludge pump and a sludge dewatering machine are installed sequentially along the sludge flow direction on the sludge pipe.

[0008] Furthermore, an aeration blower is installed at the top of the high-salt wastewater tank to blow air into the tank, and the multiple air outlets of the aeration blower are arranged in an array. A nutrient solution addition pump is installed at the top of the high-salt wastewater tank, and the output end of the nutrient solution addition pump extends to the middle and lower area.

[0009] Furthermore, a waterproof barrier layer is laid below the soil layer. The waterproof barrier layer is attached to the inner wall of the bottom of the high-salt wastewater tank and is made of polyethylene film.

[0010] Furthermore, the plants in the high-salt wastewater pond are arranged in a linear pattern, and a sludge scraper is placed between adjacent rows of plants to avoid the plant roots.

[0011] The present invention provides a method for treating high-salinity wastewater based on halophilic organisms. This method uses the aforementioned treatment apparatus and includes the following steps: Step 1: Transport the high-salinity wastewater to the high-salinity wastewater pool through the water replenishment pipeline, and monitor the water quality and quantity parameters of the replenishment water in real time through a water quality monitor; Step 2: Cultivate halophilic or salt-tolerant plants and inoculate halophilic microorganisms in the high-salt wastewater pond, continuously blow air into the pond, and add nutrient solution to the pond at the same time, and use biochemical action to transfer the salt in the high-salt wastewater into their cells. Step 3: Harvest the plants in the high-salt wastewater pond regularly, and dry them to obtain dried plant material; after harvesting, scrape the bottom sediment sludge into the downstream sludge pond using a sludge scraper, and process it into dry sludge through the sludge treatment components. Step 4: Monitor the water quality and quantity parameters of the treated wastewater in the drainage pipe in real time using a water quality monitor. Once the parameters meet the standards, transport the low-salinity wastewater to the corresponding industrial scenario for reuse. Step 5: Crush the dried plant material from Step 3 and mix it with the dried sludge into coal and send it to a coal-fired boiler for combustion to complete wastewater treatment and resource utilization.

[0012] Furthermore, in step 2, the halophilic or salt-tolerant plants are one or more of the following: Salicornia, Suaeda salsa, Portulaca oleracea, and Ligustrum lucidum; the halophilic microorganisms are one or more of the following: halophilic fungi, halophilic bacteria, halophilic archaea, and halophilic algae; and the nutrient solution is a compound nutrient solution containing carbon source, nitrogen source, and phosphorus element.

[0013] Furthermore, in step 5, the dried halophilic or salt-tolerant plants are pulverized, and the particle size of the pulverized material is controlled to be between 1 and 10 mm.

[0014] Furthermore, in step 1, the parameters monitored in real time by the water quality monitor include the flow rate of the replenishing water, pH, conductivity and turbidity, and the amount of nutrient solution added is adjusted in real time according to the monitored replenishing water volume and water quality parameters.

[0015] Furthermore, in step 4, the parameters monitored in real time by the water quality monitor include the flow rate, pH, conductivity, and turbidity of the treated wastewater. In industrial scenarios, this includes one of the following: desulfurization process water reuse, circulating water system makeup water, and fuel system water use.

[0016] Beneficial effects: The high-salt wastewater treatment device based on halophilic organisms provided by this invention integrates a high-salt wastewater tank as its core. The two ends of the tank are connected to water supply and drainage pipes, and both are equipped with water quality monitors, realizing water quality monitoring and control throughout the entire high-salt wastewater treatment process. The mud layer at the bottom of the tank is adapted to the growth requirements of halophilic plants and microorganisms. The sludge scraper is set up above the mud layer and its end is directly connected to the sludge tank and sludge treatment components, which facilitates sludge collection and treatment.

[0017] The treatment method provided by this invention utilizes halophilic plants and microorganisms to treat high-salinity wastewater. Salt in the wastewater is absorbed and fixed within the cells of the halophilic plants and microorganisms through biochemical processes, reducing the salt content of the wastewater for reuse. Subsequently, the salt-absorbing halophilic plants and microorganisms are separated from the wastewater, dehydrated, dried, and pulverized before being mixed with coal and sent to a coal-fired boiler for combustion. After combustion, the salt in the halophilic plants and microorganisms is removed with the flue gas and incorporated into fly ash for comprehensive utilization. This method achieves low-cost desalination of high-salinity wastewater and allows the sludge and halophilic plants generated during biological desalination to be co-burned as fuel, reducing carbon emissions. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the high-salt wastewater treatment device based on halophilic organisms provided in an embodiment of the present invention; Figure 2 A flowchart of a high-salt wastewater treatment method based on halophilic organisms provided in an embodiment of the present invention.

[0020] Icons: 1-High salinity wastewater tank; 2-Water supply pipe; 201-Water supply pump; 3-Drainage pipe; 301-Drainage pump; 4-Water quality monitor; 5-Soil layer; 6-Sludge scraper; 7-Sludge tank; 8-Sludge treatment components; 801-Sludge pipe; 802-Sludge pump; 803-Sludge dewatering machine; 9-Aeration blower; 10-Nutrient solution addition pump. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0027] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0028] like Figure 1 As shown, the high-salt wastewater treatment device based on halophilic organisms provided by the present invention includes: a high-salt wastewater pool 1, in which halophilic plants or salt-tolerant plants are planted and halophilic microorganisms are added; one end of the high-salt wastewater pool 1 is connected to a water supply pipe 2; the other end of the high-salt wastewater pool 1 is connected downstream to a drainage pipe 3; and water quality monitors 4 are installed on both the water supply pipe 2 and the drainage pipe 3. The bottom of the high-salt wastewater pool 1 is covered with a soil layer 5. A sludge scraper 6 is installed above the soil layer 5. A sludge pool 7 is located at the end of the sludge scraper 6 on one side of the soil layer 5. The sludge pool 7 is connected to a sludge treatment component 8.

[0029] Specifically, the entire interior of the high-salinity wastewater pond 1 is planted with halophilic or salt-tolerant plants such as Salicornia glutinosa and Suaeda salsa. At the same time, halophilic fungi, bacteria and other halophilic microorganisms are artificially inoculated. The plants and microorganisms together constitute the biological desalination system in the pond. The halophilic or salt-tolerant plants and halophilic microorganisms can transfer the salt in the high-salinity wastewater from the water into the cells of the halophilic plants and halophilic microorganisms, thereby removing the salt from the high-salinity wastewater. The resulting low-salinity water is then reused. The water supply pipe 2 serves as the inlet channel for high-salinity wastewater, directly connected to the inlet side of the high-salinity wastewater pool 1. The drainage pipe 3 connects to the outlet side of the high-salinity wastewater pool 1 and is located downstream of the pool, forming a unidirectional flow path for wastewater from water supply to treatment and then to drainage. Water quality monitors 4 are installed on the water supply pipe 2 and the drainage pipe 3 respectively, with the monitoring probes penetrating into the water body inside the pipes to achieve real-time monitoring of the water quality and quantity parameters of the inlet and outlet. The entire high-salinity wastewater pool 1 is covered with a soil layer 5, providing a stable growth substrate for halophilic plants and microorganisms in the pool. The sludge scraper 6 is installed above the soil layer 5 in an elevated manner, and its operating trajectory covers the main area of ​​the soil layer 5. A sludge pool 7 is set on one side of the soil layer 5, adjacent to the end of the sludge scraper 6. The outlet of the sludge pool 7 is sealed and connected to the sludge treatment component 8, which can realize the directional transportation of sludge.

[0030] The high-salinity wastewater tank 1 serves as the core tank, with its inlet end directly connected to the water supply pipe 2 and its outlet end directly connected to the drainage pipe 3. This allows the high-salinity wastewater to form an orderly unidirectional treatment process, avoiding water backflow and mixing, and improving desalination efficiency. Furthermore, each of the water supply and drainage pipes is equipped with a water quality monitor 4, which can accurately control the influent water quality to adjust treatment parameters such as nutrient solution addition and aeration. Simultaneously, it monitors the effluent water quality to determine the reuse scenario, achieving intelligent control of the treatment process. A soil layer 5 is laid at the bottom of the high-salinity wastewater tank 1, providing a suitable growth environment for halophilic plants and microorganisms, ensuring the stable operation of the biological desalination system. A sludge scraper 6 is suspended above the soil layer 5, with its sludge discharge end facing the sludge tank 7. This efficiently scrapes away the halophilic microbial sludge deposited at the bottom of the tank, enabling nearby sludge collection and reducing sludge spillage and loss during transportation. The sludge tank 7 and sludge treatment components allow the collected sludge to quickly enter the dewatering and pulverizing treatment stages.

[0031] In an embodiment of the present invention, a water supply pump 201 is provided on the water supply pipe 2, and a drainage pump 301 is provided on the drainage pipe 3; The sludge treatment assembly 8 includes a sludge pipe 801, a sludge pump 802, and a sludge dewatering machine 803; the sludge pipe 801 is connected to the sludge tank 7, and the end of the sludge pipe 801 away from the sludge tank 7 is connected to the boiler for co-firing; the sludge pump 802 and the sludge dewatering machine 803 are sequentially arranged on the sludge pipe 801 along the sludge flow direction.

[0032] An aeration blower 9 is installed at the top of the high-salt wastewater tank 1 to blow air into the tank. Multiple air outlets of the aeration blower 9 are arranged in an array. A nutrient solution addition pump 10 is installed at the top of the high-salt wastewater tank 1, and the output end of the nutrient solution addition pump 10 extends to the middle and lower part of the tank.

[0033] A waterproof barrier layer is laid below the soil layer 5. The waterproof barrier layer is attached to the inner wall of the bottom of the high-salt wastewater tank 1 and is made of polyethylene film.

[0034] The plants in the high-salt wastewater pond 1 are arranged in a linear pattern, and the sludge scraper 6 is placed between adjacent rows of plants to avoid the plant roots.

[0035] Specifically, the water replenishment pump 201 is fixedly installed on the water replenishment pipe 2 to provide power for transporting high-salinity wastewater from the water replenishment end to the high-salinity wastewater pool 1, realizing quantitative and controllable water replenishment; the drainage pump 301 is correspondingly installed on the drainage pipe 3 to provide power for the discharge and reuse of the treated low-salinity water in the high-salinity wastewater pool 1, ensuring the smooth flow of the effluent. One end of the sludge pipe 801 in the sludge treatment component 8 is sealed and connected to the bottom of the sludge pool 7, and the other end extends directly to the co-firing area of ​​the coal-fired boiler. A sludge pump 802 and a sludge dewatering machine 803 are sequentially connected in series on the sludge pipe 801 along the direction of sludge flow from the sludge pool 7 to the boiler, forming a continuous pipeline for sludge transportation, treatment, and utilization. An aeration blower 9 is installed on the upper outer side of the high-salinity wastewater tank 1, with its blower pipe extending into the tank. Multiple air outlets at the end of the pipe are evenly arranged in an array within the high-salinity wastewater tank 1. A nutrient solution addition pump 10 is also installed on the upper part of the high-salinity wastewater tank 1, with its nutrient solution delivery end extending through the side wall of the tank into the lower middle water area. A waterproof barrier layer is laid below the soil layer 5, which is tightly fitted to the inner wall of the bottom of the high-salinity wastewater tank 1 for overall installation. The halophilic or salt-tolerant plants planted in the high-salinity wastewater tank 1 are arranged in a regular linear pattern. The working track of the sludge scraper 6 is arranged along the gap between adjacent rows of plants, and the working path avoids the plant root area.

[0036] The separate setup of the water supply pump 201 and the drainage pump 301 allows for flexible adjustment of the influent and effluent flow rates based on real-time data from the water quality and quantity monitoring device, adapting to different treatment needs. The sludge treatment component 8 is first powered by the sludge pump 802, then the sludge dewatering machine 803 completes the dewatering process, simultaneously reducing the volume of the sludge during transport and lowering the energy consumption for subsequent boiler co-firing. The sludge pipe 801, directly connected to the boiler, achieves seamless integration for sludge resource utilization, improving treatment efficiency. The array-style arrangement of the aeration blower 9's outlets ensures uniform diffusion of the blown air within the high-salt wastewater tank 1, guaranteeing the aerobic metabolic needs of halophilic microorganisms in each area of ​​the tank and promoting their proliferation. The nutrient solution addition pump 10 extends its output to the lower middle part of the tank, adding nutrients needed for microbial growth to the high-salt wastewater. This prevents the nutrient solution from floating on the surface and failing to mix properly, improving the compatibility between the nutrient solution and the tank water, further ensuring the growth and metabolism of microorganisms. A high-density polyethylene film waterproof barrier is laid under the soil layer 5 and attached to the inner wall of the pool bottom, which can form a tight anti-seepage structure of the pool bottom, effectively preventing high-salt wastewater from seeping into the groundwater system and avoiding groundwater pollution. The linear arrangement of plants and the design of the sludge scraper 6 between the rows and avoiding the root system can not only ensure that the sludge scraper 6 can comprehensively and efficiently scrape the microbial sludge at the bottom of the pool, but also prevent the scraping operation from damaging the plant roots, ensuring the normal growth of halophilic plants and allowing the biological desalination system of plants and microorganisms to continue to function stably.

[0037] like Figure 2As shown, the present invention provides a method for treating high-salinity wastewater based on halophilic organisms. This method uses the treatment apparatus described in the above embodiment and includes the following steps: Step 1: High-salt wastewater is transported to high-salt wastewater tank 1 through water supply pipe 2. The water quality and quantity parameters of the water supply are monitored in real time by water quality monitor 4. The parameters monitored in real time by water quality monitor 4 include water supply flow rate, pH, conductivity and turbidity. The amount of nutrient solution added is adjusted in real time according to the monitored water supply volume and water quality parameters.

[0038] Specifically, the water replenishment pump 201 on the water replenishment pipeline 2 is started. The water replenishment pump 201 provides the conveying power to quantitatively transport the high-salinity wastewater to be treated into the high-salinity wastewater pool 1 through the water replenishment pipeline 2. During the water replenishment process, the water quality monitor 4 on the water replenishment pipeline 2 continuously monitors the core parameters of the water quality and quantity of the water replenishment in real time. The monitoring data is transmitted to the system control terminal in real time. The control terminal adjusts the operating frequency and output of the nutrient solution addition pump 10 in real time according to the monitored water replenishment volume and the actual values ​​of each water quality parameter. The total amount of nutrient solution added to the high-salinity wastewater pool 1 is precisely adjusted to ensure that the amount of nutrient solution added is compatible with the salinity and volume of the influent, so as to create a suitable nutrient environment in advance for the growth and metabolism of halophilic microorganisms.

[0039] Step 2: Cultivate halophilic or salt-tolerant plants and inoculate halophilic microorganisms in high-salt wastewater pond 1. Continuously blow air into the pond and add nutrient solution at the same time. Use biochemical action to transfer the salt in the high-salt wastewater into their cells. The halophilic or salt-tolerant plants are one or more of the following: Salicyla, Suaeda salsa, Portulaca oleracea, and Ligustrum lucidum. The halophilic microorganisms are one or more of the following: halophilic fungi, halophilic bacteria, halophilic archaea, and halophilic algae. The nutrient solution is a compound nutrient solution containing carbon source, nitrogen source, and phosphorus.

[0040] Specifically, halophilic or salt-tolerant plants are planted in a predetermined linear arrangement on the soil layer 5 within the high-salinity wastewater pond 1. Planting is accomplished through seedling transplanting or seed cultivation to ensure that the plant roots are stably embedded in the soil layer 5 for normal growth. Simultaneously, halophilic microorganisms are inoculated into the water within the high-salinity wastewater pond 1. The inoculation amount of microorganisms is adjusted according to the initial salinity of the high-salinity wastewater to ensure that the initial concentration of microorganisms meets the requirements of the biochemical desalination reaction. After the plant planting and microbial inoculation are completed, the aeration blower 9 is started. The aeration blower 9 continuously and evenly blows air into the high-salt wastewater tank 1 through multiple air outlets that extend into the tank and are arranged in an array, ensuring that the dissolved oxygen content of the water in the tank is maintained within the suitable range for the aerobic metabolism of halophilic microorganisms. At the same time, the nutrient solution addition pump 10 is started to continuously add compound nutrient solution into the tank through the output end that extends into the middle and lower part of the tank, so that the nutrient solution and the tank water are fully mixed. Under the synergistic biochemical action of halophilic plants and halophilic microorganisms, various salts in the high-salt wastewater are gradually absorbed and transferred to the somatic cells of halophilic plants and the cells of halophilic microorganisms through biochemical reactions to complete fixation, thereby achieving the separation and removal of salts from the water phase.

[0041] Step 3: Harvest the plants in the high-salt wastewater pond 1 regularly, and dry them to obtain dried plant material; after harvesting, scraper 6 scrapes the bottom sediment sludge into the downstream sludge pond 7, and processes it into dry sludge through sludge treatment component 8. Specifically, according to the natural growth cycle of halophilic or salt-tolerant plants, mature plants in the high-salt wastewater pond 1 are harvested manually or mechanically on a regular basis, avoiding the plant roots during harvesting to ensure the normal growth of the remaining plants. The harvested plants are then placed in a well-ventilated and sunny area for natural drying until the moisture content of the plant material drops to the preset process standard, thus obtaining dry plant material. After the plant harvesting is completed, the sludge scraper 6 is started. The scraper 6 runs along the gap between two adjacent rows of plants according to a preset trajectory, avoiding the plant root area, and evenly scrapes off the halophilic microbial sludge deposited above the soil layer 5 at the bottom of the high-salt wastewater pond 1. The scraped sludge is then transported to the sludge pond 7 downstream of the high-salt wastewater pond 1. Subsequently, the sludge treatment component 8 is started, and the sludge in the sludge pond 7 is sent to the sludge dewatering machine 803. After the sludge dewatering machine 803 completes the dewatering treatment, dry sludge with a moisture content that meets the process requirements is obtained.

[0042] Step 4: Monitor the water quality and quantity parameters of the treated wastewater in the drainage pipe 3 in real time using the water quality monitor 4. Once the parameters meet the standards, the low-salinity wastewater is transported to the corresponding industrial scenario for reuse. The parameters monitored in real time by the water quality monitor 4 include the flow rate, pH, conductivity and turbidity of the treated wastewater. The industrial scenario is one of the following: desulfurization process water reuse, circulating water system makeup water, or fuel system water.

[0043] Specifically, when the control terminal determines that all monitored parameters have reached the preset reuse water quality standards, it controls the drainage pump 301 to continue operating normally, and transports the treated low-salinity wastewater in the high-salinity wastewater tank 1 to the corresponding industrial scenario for reuse through the drainage pipe 3; if the monitored parameters do not reach the preset reuse standards, the control terminal immediately shuts down the drainage pump 301, so that the wastewater continues to undergo biochemical desalination treatment in the high-salinity wastewater tank 1 until all water quality parameters meet the standards before starting the drainage reuse.

[0044] Step 5: Crush the dried plant material from Step 3 and mix it with the dried sludge into coal, then send it to a coal-fired boiler for combustion to complete wastewater treatment and resource utilization. The dried halophilic or salt-tolerant plants are crushed, with the particle size controlled between 1 and 10 mm.

[0045] Specifically, the obtained dried plant material is fed into a specialized mechanical crushing device for crushing, with the screen mesh size adjusted as needed. After crushing, the plant powder, along with the processed dried sludge, is sent to a coal-fired boiler for incineration. During incineration, the salts fixed within the cells of the halophilic plants and halophilic microorganisms are removed along with the boiler flue gas in a matching dust collector. Ultimately, the salts are incorporated into the fly ash for comprehensive utilization, completing the entire process of desalination of high-salt wastewater and resource utilization of treatment byproducts.

[0046] In an embodiment of the present invention, the halophilic plant is Salicornia salina, the halophilic microorganism is halophilic fungus, and in step 5, the dried material needs to be crushed into particles with a particle size of 2 mm.

[0047] In an embodiment of the present invention, the halophilic plant is dentata, the halophilic microorganism is halophilic archaea, and in step 5, the dried material needs to be pulverized into particles with a particle size of 2.5 mm.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high-salinity wastewater treatment device based on halophilic organisms, characterized in that, include: A high-salt wastewater pond (1) is planted with halophilic or salt-tolerant plants and halophilic microorganisms. One end of the high-salt wastewater pond (1) is connected to a water supply pipe (2), and the other end of the high-salt wastewater pond (1) is connected to a drainage pipe (3) downstream. Water quality monitors (4) are installed on both the water supply pipe (2) and the drainage pipe (3). The bottom of the high-salt wastewater pool (1) is covered with a soil layer (5), and a sludge scraper (6) is installed above the soil layer (5). The end of the sludge scraper (6) is located on one side of the soil layer (5) and a sludge pool (7) is provided. The sludge pool (7) is connected to a sludge treatment component (8).

2. The high-salinity wastewater treatment device based on halophilic organisms according to claim 1, characterized in that, A water supply pump (201) is installed on the water supply pipe (2), and a drainage pump (301) is installed on the drainage pipe (3). The sludge treatment assembly (8) includes a sludge pipe (801), a sludge pump (802), and a sludge dewatering machine (803). The sludge pipe (801) is connected to the sludge tank (7), and the end of the sludge pipe (801) away from the sludge tank (7) is connected to the boiler for co-firing. The sludge pump (802) and the sludge dewatering machine (803) are sequentially arranged on the sludge pipe (801) along the sludge flow direction.

3. The high-salinity wastewater treatment device based on halophilic organisms according to claim 1, characterized in that, An aeration blower (9) is installed at the top of the high-salt wastewater pool (1) to blow air into the pool. The multiple air outlets of the aeration blower (9) are arranged in an array. A nutrient solution addition pump (10) is installed at the upper part of the high-salt wastewater tank (1), and the output end of the nutrient solution addition pump (10) extends to the middle and lower part of the tank.

4. The high-salinity wastewater treatment device based on halophilic organisms according to claim 1, characterized in that, A waterproof barrier is laid below the soil layer (5), and the waterproof barrier is attached to the inner wall of the bottom of the high-salt wastewater pool (1). The waterproof barrier is a polyethylene film.

5. The high-salinity wastewater treatment device based on halophilic organisms according to claim 1, characterized in that, The plants planted in the high-salt wastewater pool (1) are arranged in a linear pattern, and the sludge scraper (6) is arranged between two adjacent rows of plants to avoid the plant roots.

6. A method for treating high-salinity wastewater based on halophilic organisms, characterized in that, The method uses the processing apparatus of any one of claims 1-5 and includes the following steps: Step 1: The high-salt wastewater is transported to the high-salt wastewater pool (1) through the water replenishment pipeline (2), and the water quality and quantity parameters of the replenishment water are monitored in real time by the water quality monitor (4); Step 2: Cultivate halophilic or salt-tolerant plants and inoculate halophilic microorganisms in the high-salt wastewater pool (1), continuously blow air into the pool, and add nutrient solution to the pool at the same time, and use biochemical action to transfer the salt in the high-salt wastewater into its cells. Step 3: Harvest the plants in the high-salt wastewater pond (1) regularly, and dry them to obtain dried plant material; after harvesting, scrape the bottom sediment sludge into the downstream sludge pond (7) through the sludge scraper (6), and process it into dry sludge through the sludge treatment component (8); Step 4: Monitor the water quality and quantity parameters of the wastewater treated by the drainage pipe (3) in real time through the water quality monitor (4). After the parameters meet the standards, transport the low-salt wastewater to the corresponding industrial scenario for reuse. Step 5: Crush the dried plant material from Step 3 and mix it with the dried sludge into coal and send it to a coal-fired boiler for combustion to complete wastewater treatment and resource utilization.

7. The processing method according to claim 6, characterized in that, The halophilic or salt-tolerant plants mentioned in step 2 are one or more of the following: Salicornia, Suaeda salsa, Portulaca oleracea, and Ligustrum lucidum. The halophilic microorganisms are one or more of the following: halophilic fungi, halophilic bacteria, halophilic archaea, and halophilic algae. The nutrient solution is a compound nutrient solution containing carbon source, nitrogen source, and phosphorus.

8. The processing method according to claim 6, characterized in that, In step 5, the dried halophilic or salt-tolerant plants are crushed, and the particle size of the crushed material is controlled between 1 and 10 mm.

9. The processing method according to claim 6, characterized in that, The parameters monitored in real time by the water quality monitor (4) in step 1 include the flow rate of the replenishing water, pH, conductivity and turbidity, and the amount of nutrient solution added is adjusted in real time according to the monitored replenishing water volume and water quality parameters.

10. The processing method according to claim 6, characterized in that, The parameters monitored in real time by the water quality monitor (4) in step 4 include the flow rate, pH, conductivity and turbidity of the treated wastewater. The industrial scenario is one of desulfurization process water reuse, circulating water system makeup water and fuel system water use.

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