Water and soil treatment equipment control method, system and controller

Abstract

The application provides a water and soil treatment equipment control method, system and controller, relates to the field of water and soil treatment equipment control, and deeply couples brackish water desalination and soil leaching process through a soil leaching equipment and a brackish water treatment equipment in the water and soil treatment equipment, and realizes closed-circuit circulation of 'brackish water desalination-leaching-reflow-redesalination' in combination with a circulation reflux equipment, so that the waste of water resources and the energy consumption of the water and soil treatment equipment are greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of water and soil remediation equipment control, and in particular to a water and soil remediation equipment control method, system and controller. Background Technology

[0002] In the process of improving saline-alkali land, soil leaching using leaching equipment is the most effective measure. However, this measure relies on sufficient freshwater resources. Freshwater resources are scarce in saline-alkali areas, but shallow brackish water reserves are relatively abundant. Directly discharging this brackish water would waste water resources, while direct use for irrigation would lead to further soil salinization and degradation. There is a lack of effective ways to utilize this water rationally. In the specific process of leaching saline-alkali land, the resulting saline water is generally discharged directly, which not only wastes water resources but also pollutes surrounding water bodies, making resource recycling impossible.

[0003] In summary, existing water and soil remediation equipment cannot organically combine brackish water desalination and soil leaching, resulting in water waste and high energy consumption. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a control method, system and controller for water and soil remediation equipment. The method deeply couples the desalination of brackish water and the soil washing process through the soil washing equipment and the brackish water treatment equipment in the water and soil remediation equipment, and realizes a closed loop of "brackish water desalination-washing-recirculation-re-desalination" by combining the circulation and recirculation equipment, which greatly reduces the waste of water resources and the energy consumption of water and soil remediation equipment.

[0005] In a first aspect, embodiments of the present invention provide a control method for soil and water conservation equipment, applied in a controller of soil and water conservation equipment; the soil and water conservation equipment further includes: a soil washing device, a brackish water treatment device, and a circulation recirculation device; the method includes: The brackish water treatment equipment is used to desalinate the brackish water in the target saline-alkali land to obtain fresh water and concentrated brine. After the target saline-alkali land is leached by the freshwater controlled soil leaching equipment, the controlled circulation return equipment returns the leached saline water to the brackish water treatment equipment. Control the brackish water treatment equipment to desalinate the mixed brine containing salt water and concentrated brine.

[0006] Optionally, the brackish water treatment equipment is used to desalinate the brackish water in the target saline-alkali land to obtain fresh water and concentrated brine, including: Obtain the mineralization of shallow underground brackish water and surface brackish water in the target saline-alkali land; Desalination strategies for brackish water were determined using mineralization, and the corresponding freshwater salinity thresholds for each desalination strategy were obtained. The brackish water treatment equipment is controlled by a desalination strategy to desalinate the brackish water, resulting in fresh water with a salt content not exceeding the fresh water salt content threshold. The desalinated concentrated brine is then stored in the concentrated brine storage tank of the brackish water treatment equipment.

[0007] Optionally, the desalination strategy for brackish water can be determined using mineralization, including: If the salinity is less than the preset salinity threshold, the first desalination treatment strategy for the brackish water is determined based on the electro-adsorption equipment in the brackish water treatment equipment. If the salinity is not less than the salinity threshold, then the second desalination strategy for brackish water is determined based on the reverse osmosis equipment in the brackish water treatment equipment.

[0008] Optionally, the target saline-alkali land can be leached using a freshwater-based controlled soil leaching device, including: Real-time collection of soil salinity, moisture content, and permeability in the target saline-alkali land; The leaching execution strategy of the flow regulation device in the soil leaching equipment was determined by using salinity, humidity, and permeability. The freshwater is leached to the target saline-alkali land by controlling the flow regulation device through the leaching execution strategy.

[0009] Optionally, the steps of determining the leaching execution strategy of the flow regulation device in the soil leaching equipment using salinity, humidity, and permeability include: If the salt content is greater than the preset soil salt content threshold, the humidity value is less than the preset soil humidity threshold, and the permeability is less than the preset soil permeability threshold, then the first rinsing execution strategy of the soil rinsing equipment is determined by the first total rinsing water volume, the first rinsing flow rate, and the first rinsing duration of the flow regulating device. If the salt content is not greater than the soil salt content threshold, the humidity value is not less than the soil humidity threshold, and the permeability is not less than the soil permeability threshold, then the second rinsing execution strategy of the soil rinsing equipment is determined by the second total rinsing water volume, the second rinsing flow rate, and the second rinsing duration of the flow regulating device; wherein, the first total rinsing water volume is greater than the second total rinsing water volume, the first rinsing flow rate is less than the second rinsing flow rate, and the first rinsing duration is greater than the second rinsing duration.

[0010] Optionally, the control system for the recirculation device to return the rinsed brine to the brackish water treatment equipment includes: Real-time data collection of the brine volume and mineralization after rinsing; The operating parameters of the return pump in the circulating recirculation equipment are determined by real-time water volume, and the water quality adjustment strategy of the circulating recirculation equipment is determined by mineralization. The brackish water treatment equipment is controlled to add fresh water to the saline water until the salinity is lower than the target salinity corresponding to the water quality adjustment strategy. Based on the operating parameters, the back pump is controlled to return the saline water to the brackish water treatment equipment.

[0011] Optionally, the control system for the recirculation device to return the rinsed brine to the brackish water treatment equipment includes: Real-time data collection of the saline water volume and pH level after rinsing; The operating parameters of the return pump in the circulating recirculation equipment are determined by real-time water volume, and the acid-base adjustment strategy of the water quality adjustment unit in the circulating recirculation equipment is determined by pH value. The acid-base adjustment strategy controls the water quality adjustment unit to add acid-base adjustment agents to the saline water until the acid-base level reaches the target acid-base value corresponding to the acid-base adjustment strategy. Based on the operating parameters, the back pump is controlled to return the saline water to the brackish water treatment equipment.

[0012] Optionally, the brackish water treatment equipment is used to desalinate the mixed brine containing saline and concentrated brine, including: The brackish water treatment equipment is controlled to input the brine into the concentrated brine storage tank to obtain a mixed brine of brine and concentrated brine; The purification strategy of the brackish water treatment equipment is determined by using the water quality data of the mixed brine, and the impurity threshold of the mixed brine corresponding to the purification strategy is obtained. By controlling the purification treatment equipment in the brackish water treatment equipment to filter the mixed brine, a mixed brine with impurities not exceeding the mixed brine impurity threshold is obtained. The desalination treatment strategy is used to control the brackish water treatment equipment to desalinate the mixed brine.

[0013] Secondly, the present invention provides a control system for soil and water conservation equipment, applied in the controller of soil and water conservation equipment; the soil and water conservation equipment further includes: soil washing equipment, brackish water treatment equipment, and circulation recirculation equipment; the system includes: First desalination control module: Used to control the brackish water treatment equipment to desalinate the brackish water in the target saline-alkali land to obtain fresh water and concentrated brine; Leaching reflux control module: used to control the circulation reflux device to return the leached saline water to the brackish water treatment device after the target saline-alkali land is leached by the fresh water-based soil leaching equipment. The second desalination control module is used to control the brackish water treatment equipment to desalinate the mixed brine containing salt water and concentrated brine.

[0014] Thirdly, embodiments of the present invention also provide a controller, which includes a processor and a memory. The memory stores computer-executable instructions that can be executed by the processor, and the processor executes the computer-executable instructions to implement the steps of the water and soil management equipment control method provided in the first aspect.

[0015] This invention provides a control method, system, and controller for soil and water conservation equipment, applied in the controller of soil and water conservation equipment. The equipment further includes a soil leaching device, a brackish water treatment device, and a recirculation device. In the process of improving target saline-alkali land using the soil and water conservation equipment, firstly, the brackish water treatment device is controlled to desalinate the brackish water in the target saline-alkali land, obtaining fresh water and concentrated brine. Then, based on the fresh water, the soil leaching device is controlled to leach the target saline-alkali land, and the recirculation device is controlled to return the leached brine to the brackish water treatment device. Finally, the brackish water treatment device is controlled to desalinate the mixed brine of brine and concentrated brine again. This method deeply couples the brackish water desalination and soil leaching processes through the soil leaching device and the brackish water treatment device in the soil and water conservation equipment, and combines them with the recirculation device to achieve a closed-loop cycle of "brackish water desalination-leaching-recirculation-re-desalination," significantly reducing water waste and energy consumption of the soil and water conservation equipment.

[0016] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention are realized and obtained through the structures particularly pointed out in the description and the drawings.

[0017] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. 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 A flowchart of a water and soil management equipment control method provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a water and soil management equipment control system provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of a controller provided in an embodiment of the present invention.

[0020] icon: 100 - First desalination control module; 200 - Washing reflux control module; 300 - Second desalination control module; 101 - Processor; 102 - Memory; 103 - Bus; 104 - Communication interface. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] To facilitate understanding of this embodiment, a water and soil remediation equipment control method disclosed in this embodiment of the invention will first be introduced. This method is applied in the controller of the water and soil remediation equipment; the water and soil remediation equipment also includes: soil washing equipment, brackish water treatment equipment, and circulation recirculation equipment. Based on this, the method is as follows: Figure 1 As shown, it includes: Step S101: Control the brackish water treatment equipment to desalinate the brackish water in the target saline-alkali land to obtain fresh water and concentrated brine.

[0023] Under the control of the controller, the brackish water treatment equipment extracts shallow underground brackish water from the target saline-alkali land. After completing the removal of suspended impurities, filtration and disinfection, the purified brackish water undergoes the first deep desalination treatment through desalination methods such as reverse osmosis or electro-adsorption, separating and producing fresh water that meets the water quality requirements for soil leaching, as well as concentrated brine produced during the desalination process. The fresh water is transported to the soil leaching equipment, while the concentrated brine is temporarily stored in the brackish water treatment equipment.

[0024] Step S102: After the target saline-alkali land is leached by the freshwater controlled soil leaching equipment, the controlled circulation return equipment returns the leached saline water to the brackish water treatment equipment.

[0025] After the controller delivers the freshwater produced by the brackish water treatment equipment to the soil leaching equipment, it adjusts the leaching flow rate and speed of the soil leaching equipment according to the salinity and texture of the soil. The target saline-alkali land is then uniformly leached through the leaching pipe network deployed in the soil leaching equipment, so that the freshwater can fully dissolve the soluble salts in the soil and form saline water. Subsequently, the controller controls the circulation return equipment to pump back the saline water produced after leaching and deliver it to the brackish water treatment equipment.

[0026] Step S103: Control the brackish water treatment equipment to desalinate the mixed brine containing salt water and concentrated brine.

[0027] The controller controls the brackish water treatment equipment, mixing the circulating saline water with the temporarily stored concentrated brine to form a mixed brine. The mixed brine can first be pretreated, purified, and conditioned, and then further desalinated by the desalination unit, continuously maintaining a closed-loop cycle of "brackish water desalination - soil rinsing - saline water return - mixing and re-desalination".

[0028] Optionally, the brackish water treatment equipment is used to desalinate the brackish water in the target saline-alkali land to obtain fresh water and concentrated brine, including the following steps: Step S201: Obtain the mineralization of shallow underground brackish water and surface brackish water in the target saline-alkali land.

[0029] The water quality mineralization data of shallow underground brackish water and surface brackish water in the target saline-alkali area are collected in real time by a mineralization sensor pre-set in the water and soil treatment equipment, and the collected mineralization parameters are transmitted to the controller of the water and soil treatment equipment.

[0030] Step S202: Determine the desalination strategy for brackish water using the degree of mineralization, and obtain the freshwater salinity threshold corresponding to the desalination strategy.

[0031] The controller matches the corresponding desalination strategy based on the obtained brackish water salinity value (e.g., reverse osmosis desalination strategy is selected when salinity is ≥5g / L, and electro-adsorption desalination strategy is selected when salinity is <5g / L), and at the same time retrieves the freshwater salinity threshold (0.5g / L) corresponding to the desalination strategy.

[0032] Step S203: Control the brackish water treatment equipment to desalinate the brackish water through a desalination treatment strategy to obtain fresh water with a salt content not higher than the fresh water salt content threshold, and store the desalinated concentrated brine in the concentrated brine storage tank of the brackish water treatment equipment.

[0033] Following a predetermined desalination strategy, the controller first controls the brackish water treatment equipment to perform sedimentation, filtration, and disinfection pretreatment on the brackish water. Then, it drives the corresponding desalination unit to perform deep desalination on the pretreated brackish water, producing compliant fresh water with a salt content not exceeding the fresh water salt content threshold. The concentrated brine produced during the desalination process is transported by the controller to the concentrated brine storage tank of the brackish water treatment equipment for temporary storage, awaiting subsequent recycling.

[0034] Optionally, the desalination strategy for brackish water can be determined using mineralization, including the following steps: Step S301: If the salinity is less than the preset salinity threshold, then the first desalination treatment strategy for the brackish water is determined based on the electro-adsorption device in the brackish water treatment equipment.

[0035] The controller compares the real-time salinity value of the brackish water with the preset salinity threshold (5g / L). If the salinity of the brackish water is less than the preset threshold, the controller selects and executes the first desalination treatment strategy, that is, controls the brackish water treatment equipment to start the electro-adsorption (EST / CDI) desalination unit to carry out desalination treatment. This strategy is suitable for brackish water with low salinity and has the characteristics of low energy consumption, easy electrode regeneration, and no secondary pollution.

[0036] Step S302: If the salinity is not less than the salinity threshold, then determine the second desalination strategy for the brackish water based on the reverse osmosis equipment in the brackish water treatment equipment.

[0037] If the salinity of the brackish water is greater than or equal to the preset salinity threshold (5g / L), the controller selects and executes the second desalination strategy, that is, controls the brackish water treatment equipment to start the reverse osmosis (RO) desalination unit to carry out desalination treatment. This strategy is suitable for high salinity brackish water, with a desalination rate of more than 95%, and can stably achieve deep desalination of brackish water.

[0038] Optionally, the target saline-alkali land is leached using a freshwater controlled soil leaching device, including the following steps: Step S401: Real-time collection of soil salinity, humidity, and permeability in the target saline-alkali land.

[0039] By deploying soil salinity sensors, soil moisture sensors, and soil permeability sensors in the cultivated layer of the target saline-alkali land, three core parameters of soil salinity, soil moisture, and soil permeability are collected in real time, and the collected data is synchronously transmitted to the controller of the soil and water management equipment.

[0040] Step S402: Determine the rinsing execution strategy of the flow regulation device in the soil rinsing equipment using salinity, humidity, and permeability.

[0041] The controller generates corresponding rinsing execution strategies based on real-time collected soil salinity, humidity, and permeability: when soil salinity is high and permeability is poor, it sets low flow rate and long rinsing parameters; when soil salinity is low and permeability is good, it sets high flow rate and short rinsing parameters, and simultaneously determines the operation mode of the rinsing pipeline network and the output parameters of the flow regulation device.

[0042] Step S403: Use the rinsing execution strategy to control the flow regulation device to rinse fresh water to the target saline-alkali land.

[0043] The controller drives the flow regulation device to stably output fresh water according to the predetermined rinsing execution strategy. The fresh water is evenly distributed to each pipe network through the distributor of the rinsing homogenization component. Then, through the anti-clogging rinsing nozzles, the fresh water is evenly rinsed to the target saline-alkali land in the form of drip irrigation or micro-sprinkler irrigation, so that the fresh water can fully penetrate and dissolve the soluble salts in the soil to form saline water.

[0044] Optionally, the step of determining the leaching execution strategy of the flow regulation device in the soil leaching equipment using salinity, humidity, and permeability includes the following steps: Step S501: If the salt content is greater than the preset soil salt content threshold, the humidity value is less than the preset soil humidity threshold, and the permeability is less than the preset soil permeability threshold, then the first rinsing execution strategy of the soil rinsing equipment is determined by using the first total rinsing water volume, the first rinsing flow rate, and the first rinsing duration of the flow regulating device.

[0045] The controller will collect real-time data on soil salinity, humidity, and permeability, and compare these data with preset thresholds for soil salinity, humidity, and permeability, respectively. If the soil salinity is greater than the preset threshold, the soil humidity is less than the preset threshold, and the soil permeability is less than the preset threshold, the soil is classified as a high-salt, dry, and poorly permeable saline-alkali land. Based on the first total rinsing water volume, first rinsing flow rate, and first rinsing duration of the flow regulation device, the controller will determine and activate the first rinsing execution strategy of the soil rinsing equipment, adopting a low-flow, long-duration rinsing mode to ensure that freshwater fully penetrates into the deep soil layers to dissolve the salt.

[0046] Step S502: If the salt content is not greater than the soil salt content threshold, the humidity value is not less than the soil humidity threshold, and the permeability is not less than the soil permeability threshold, then the second rinsing execution strategy of the soil rinsing equipment is determined by using the second total rinsing water volume, the second rinsing flow rate, and the second rinsing duration of the flow regulating device; wherein, the first total rinsing water volume is greater than the second total rinsing water volume, the first rinsing flow rate is less than the second rinsing flow rate, and the first rinsing duration is greater than the second rinsing duration.

[0047] If the soil salinity is not greater than the preset salinity threshold, the soil moisture value is not less than the preset moisture threshold, and the soil permeability is not less than the preset permeability threshold, it is determined to be a low-salt, moist, and well-permeable saline-alkali land. The controller determines and activates the second rinsing execution strategy of the soil rinsing equipment based on the second total rinsing water volume, the second rinsing flow rate, and the second rinsing duration of the flow regulating device. It adopts a high-flow-rate, short-time rinsing mode to improve efficiency and save water resources while ensuring the rinsing effect. Among them, the first total rinsing water volume is greater than the second total rinsing water volume, the first rinsing flow rate is less than the second rinsing flow rate, and the first rinsing duration is greater than the second rinsing duration.

[0048] Optionally, the circulating reflux device is used to return the rinsed brine to the brackish water treatment equipment, including the following steps: Step S601: Real-time collection of the water volume and mineralization of the brine after rinsing.

[0049] The real-time water volume and mineralization parameters of the saline water collected after soil leaching are collected in real time by the water volume sensor and mineralization sensor pre-set in the circulation reflux equipment, and the above monitoring data are synchronously transmitted to the controller of the soil and water treatment equipment.

[0050] Step S602: Determine the operating parameters of the return pump in the circulation recirculation equipment using real-time water volume, and determine the water quality adjustment strategy of the circulation recirculation equipment using mineralization.

[0051] The controller matches and determines the operating parameters of the corrosion-resistant pump in the circulation reflux equipment, such as speed, power, and pumping flow rate, based on the real-time water volume of the saline water, so that the pumping speed matches the soil leaching speed. At the same time, it determines the water quality adjustment strategy of the circulation reflux equipment based on the saline water mineralization value. When the mineralization is ≥10g / L, the fresh water dilution adjustment is initiated, and the target mineralization is controlled at 5–10g / L.

[0052] Step S603: Control the brackish water treatment equipment to add fresh water to the saline water using the water quality adjustment strategy until the salinity is lower than the target salinity corresponding to the water quality adjustment strategy.

[0053] According to the established water quality adjustment strategy, the controller controls the brackish water treatment equipment to add the qualified desalinated water produced into the saline water in a quantitative manner to dilute the high-mineralization saline water until the saline water mineralization is lower than the target mineralization threshold corresponding to the strategy.

[0054] Step S604: Based on the operating parameters, control the back pump to return the brine to the brackish water treatment equipment.

[0055] Based on the determined operating parameters of the return pump, the controller drives the corrosion-resistant return pump to stably return the qualified saline water to the pretreatment unit of the brackish water treatment equipment through the return pipeline. The saline water is then mixed with the concentrated brine temporarily stored in the concentrated brine storage tank, awaiting secondary deep desalination treatment, thus realizing a closed-loop water circulation.

[0056] Optionally, the circulating reflux device is used to return the rinsed brine to the brackish water treatment equipment, including the following steps: Step S701: Real-time collection of the water volume and pH of the saline solution after rinsing.

[0057] The water volume and pH value of the saline water collected after soil leaching are collected in real time by the water volume sensor and pH sensor of the circulating reflux equipment, and the above water quality and water volume parameters are synchronously transmitted to the controller of the soil and water treatment equipment.

[0058] Step S702: Determine the operating parameters of the return pump in the circulation recirculation equipment using real-time water volume, and determine the acid-base adjustment strategy of the water quality adjustment unit in the circulation recirculation equipment using pH.

[0059] The controller matches and determines the operating parameters of the corrosion-resistant backflow pump in the circulation and recirculation equipment, such as speed, power, and backflow flow rate, based on the real-time water volume of the saline solution, so that the backflow speed matches the soil leaching speed. At the same time, based on the pH of the saline solution, the controller determines the pH adjustment strategy of the water quality adjustment unit, aiming to adjust the pH value of the saline solution to a suitable range of 6.5–7.5.

[0060] Step S703: The acid-base adjustment unit is controlled by the acid-base adjustment strategy to add acid-base adjustment agent to the saline water until the acid-base level reaches the target acid-base value corresponding to the acid-base adjustment strategy.

[0061] The controller, following a predetermined acid-base adjustment strategy, controls the water quality adjustment unit to add the corresponding acid-base regulator to the saline solution, continuously adjusting until the saline solution reaches the target pH range corresponding to the strategy, ensuring the stable operation of the subsequent desalination process.

[0062] Step S704: Based on the operating parameters, control the return water pump to return the brine to the brackish water treatment equipment.

[0063] Based on the determined operating parameters of the return pump, the controller drives the corrosion-resistant return pump to stably return the acidic and alkaline saline water to the pretreatment unit of the brackish water treatment equipment through the return pipeline. The saline water mixes with the concentrated brine temporarily stored in the concentrated brine storage tank and awaits secondary deep desalination treatment, thus realizing a closed-loop circulation of the system water.

[0064] Optionally, the brackish water treatment equipment is used to desalinate the mixed brine containing saline and concentrated brine, including the following steps: Step S801: Control the brackish water treatment equipment to input the brine into the concentrated brine storage tank to obtain a mixed brine of brine and concentrated brine.

[0065] The controller controls the circulating reflux equipment to deliver brine into the concentrated brine storage tank, so that the brine and the concentrated brine temporarily stored in the tank are fully mixed to form a mixed brine to be further treated.

[0066] Step S802: Determine the purification strategy of the brackish water treatment equipment using the water quality data of the mixed brine, and obtain the impurity threshold of the mixed brine corresponding to the purification strategy.

[0067] The controller collects core water quality data such as suspended impurities and mineralization of the mixed brine in real time using water quality sensors. Based on this water quality data, the controller determines the corresponding purification treatment strategy for the brackish water treatment equipment and retrieves the preset impurity threshold of the mixed brine for that strategy.

[0068] Step S803: Control the purification equipment in the brackish water treatment equipment to filter the mixed brine through the purification treatment strategy to obtain mixed brine with impurities not exceeding the mixed brine impurity threshold.

[0069] According to the purification strategy, the controller sequentially drives the sedimentation tank, quartz sand filter tank and other purification units of the brackish water treatment equipment to perform sedimentation, impurity removal and fine filtration of the mixed brine, so that the impurity content of the treated mixed brine does not exceed the preset impurity threshold of the mixed brine, and avoids impurities damaging the subsequent desalination equipment.

[0070] Step S804: Control the brackish water treatment equipment to desalinate the mixed brine through a desalination treatment strategy.

[0071] Based on the desalination strategy determined earlier according to the salinity, the controller drives the reverse osmosis or electro-adsorption desalination unit of the brackish water treatment equipment to perform deep desalination on the purified mixed brine, thus completing the recycling of the mixed brine.

[0072] In the specific implementation process, the soil washing equipment, brackish water treatment equipment and circulation return equipment in the soil and water management equipment can be driven by photovoltaic power supply equipment, and the photovoltaic panels in the photovoltaic power supply equipment can be used for shading to inhibit salt moisture, so as to achieve the goal of low-carbon, high-efficiency and sustainable saline-alkali land improvement and comprehensive utilization of water resources.

[0073] Specifically, photovoltaic power supply equipment includes photovoltaic modules, energy storage units, and power conversion units. The photovoltaic modules use monocrystalline silicon or polycrystalline silicon photovoltaic panels, which are rationally arranged on the surface of the saline-alkali land to be improved, depending on the processing scale and local sunlight conditions. The installation height of the photovoltaic panels is 1.2-1.8m, and the installation density is adjusted according to the area of ​​the soil leaching area and the sunlight requirements to ensure that the photovoltaic panels can efficiently receive sunlight and generate electricity, effectively shading the soil below and reducing surface water evaporation.

[0074] The energy storage unit uses lithium battery packs to store excess electrical energy generated by the photovoltaic modules, preventing system shutdowns during periods of insufficient sunlight and ensuring stable operation around the clock. The power conversion unit includes an inverter and a voltage regulator, converting the direct current (DC) generated by the photovoltaic modules into alternating current (AC) and stabilizing the output voltage (220V or 380V) to provide stable power support for the soil washing equipment, brackish water treatment equipment, and controllers. The photovoltaic power supply equipment can flexibly adjust the number of photovoltaic modules and the capacity of the energy storage unit according to actual needs, adapting to different scales of processing scenarios.

[0075] At this stage, the brackish water treatment equipment is the core treatment unit of the water and soil remediation equipment. It adopts reverse osmosis (RO) equipment or electro-adsorption (EST, also known as capacitive deionization CDI) equipment, and the specific choice is flexibly made according to the salinity of the brackish water. When the salinity of brackish water is high (≥5g / L), reverse osmosis equipment is preferred, with a desalination rate of over 95%. When the salinity of brackish water is low (<5g / L), electro-adsorption equipment is used. This equipment has the advantages of low energy consumption, easy regeneration, and no secondary pollution. An electrostatic field is formed between the electrodes by applying an external voltage, causing charged ions in the water to be adsorbed on the electrode surface, thus achieving water desalination. Moreover, electrode regeneration does not require the use of acid or alkali solutions; it can be completed simply by discharge, making it easy to operate.

[0076] The brackish water treatment equipment also includes a pretreatment unit, which consists of a sedimentation tank, a filter tank, and a disinfection device. The sedimentation tank is used to remove suspended particulate matter, silt, and other impurities from the brackish water. The filter tank uses quartz sand as the filter medium to further remove fine impurities from the water, preventing impurities from clogging the reverse osmosis membrane or electro-adsorption electrode and extending the service life of the equipment. The disinfection device uses ultraviolet disinfection to remove bacteria and microorganisms from the water, ensuring the quality of the desalinated water and meeting the needs of soil leaching.

[0077] The brackish water is introduced as follows: shallow underground brackish water from the target saline-alkali land is extracted by pumping water, or surface brackish water is collected. After being treated by a pretreatment unit, it is sent to a reverse osmosis or electro-adsorption device. Driven by electricity provided by photovoltaic power supply equipment, the brackish water is desalinated to produce fresh water (salt content ≤0.5g / L) for soil leaching. At the same time, the concentrated brine (high-salt water separated during the desalination process) is temporarily stored in a concentrated brine storage tank for subsequent recycling.

[0078] Soil leaching equipment includes a leaching pipe network, a flow regulating device, and a leaching homogenization component. The leaching pipe network adopts a drip irrigation network or a micro-sprinkler irrigation network, which is laid below the cultivated layer of the saline-alkali land to be improved (at a depth of 20-30cm) or laid on the surface. The spacing of the pipe network is adjusted according to the soil type and crop planting needs (generally 0.5-1.0m) to ensure that fresh water can evenly cover the entire leaching area.

[0079] The flow regulating device is connected to the freshwater outlet of the brackish water treatment equipment to regulate the rinsing water volume and rinsing speed, which can be flexibly adjusted according to the soil salinity and soil texture: for soils with high salinity and poor permeability, a small flow rate and long rinsing time are used to ensure that the freshwater can fully penetrate into the deep soil layers and dissolve the soluble salts in the soil; for soils with low salinity and good permeability, a large flow rate and short rinsing time are used to improve rinsing efficiency and reduce water waste.

[0080] The rinsing homogenization component includes a distributor and rinsing nozzles. The distributor evenly distributes fresh water to each rinsing pipe, while the rinsing nozzles feature an anti-clogging design to prevent soil particles from entering and causing blockages, ensuring that every area of ​​soil receives uniform rinsing. During rinsing, fresh water penetrates deep into the soil, dissolving soluble salts such as sodium chloride and sodium sulfate to form saline solution (rinsing brine). This saline solution collects under gravity and flows to the soil surface or underground drainage layer.

[0081] The recirculation equipment is the key to achieving closed-loop circulation. It includes a recirculation pipe, a recirculation pump, and a water quality adjustment unit. One end of the recirculation pipe is connected to the drain outlet of the soil washing equipment (or the underground drainage layer), and the other end is connected to the inlet of the pretreatment unit of the brackish water treatment equipment. It is used to pump the saline water produced after soil washing back to the pretreatment unit for secondary deep treatment.

[0082] The return pump is made of corrosion-resistant materials (such as stainless steel) to prevent salt water from corroding the equipment. The return pump speed is matched with the rinsing speed to ensure that salt water does not accumulate in the soil, while also preventing unstable system pressure due to excessively fast return pumping. The water quality adjustment unit is located on the return pipe to detect the salinity and pH value of the salt water. If the salinity is too high (≥10g / L), an appropriate amount of dilution water (partially desalinated water can be used) is added to adjust the salinity to 5-10g / L, preventing excessively salinized water from entering the treatment equipment and affecting treatment efficiency and equipment lifespan. If the pH value is abnormal, an appropriate amount of acid-base adjuster is added to adjust the pH value to 6.5-7.5 to ensure stable treatment process.

[0083] In addition, the recirculation equipment also includes a concentrated brine integration unit, which mixes the concentrated brine produced by the brackish water treatment equipment with the pumped-back brine and sends them together to the pretreatment unit for secondary treatment, realizing the recycling of concentrated brine and completely eliminating the waste of resources and environmental pollution caused by the discharge of brine, forming a closed loop of "brackish water-desalination-rinsing-salt water recirculation-re-desalination".

[0084] The control method of this soil and water management equipment relies on pre-set soil salinity sensors, soil moisture sensors, brackish water mineralization sensors, freshwater quality sensors, and light sensors in the equipment to monitor in real time the soil salinity, soil moisture, brackish water, freshwater, and saline water quality parameters, as well as the local light intensity in the target saline-alkali land.

[0085] The controller can be a PLC controller, electrically connected to the aforementioned sensors, photovoltaic power supply equipment, brackish water treatment equipment, soil leaching equipment, and circulation return equipment. It receives real-time data transmitted by the sensors and adjusts the operating status of each device according to preset parameters: when the soil salinity is higher than the preset value (e.g., 1.0 g / kg), the soil leaching equipment is automatically started, increasing the leaching water volume; when the soil moisture is higher than the preset value, the leaching water volume is automatically reduced or leaching is stopped; when the light intensity is insufficient and the photovoltaic module power generation is reduced, the energy storage unit is automatically started to supply power to ensure the stable operation of the water and soil treatment equipment; when the salinity of brackish water or saline water is abnormal, the operating parameters of the water quality adjustment unit are automatically adjusted to ensure the treatment effect.

[0086] This method was applied to a coastal saline-alkali area where the shallow groundwater salinity is 6-8 g / L, the soil salinity is 1.2-1.5 g / kg, freshwater resources are scarce, but sunshine is abundant, with an average annual sunshine duration of over 2800 hours. The specific water and soil remediation equipment used is as follows: Photovoltaic power supply equipment: Utilizing monocrystalline silicon photovoltaic modules with a total power output of 50kW, it is installed on the surface of the saline-alkali land to be improved, at a height of 1.5m, covering an area of ​​800m². 2 The energy storage unit uses a 100kWh lithium battery pack, and the power conversion unit uses a 50kW inverter and voltage regulator with an output voltage of 380V. Brackish water treatment equipment: Due to the high mineralization of brackish water, reverse osmosis equipment (96% desalination rate) is selected. The pretreatment unit includes one 5m³ / h unit. 3 The facility includes a sedimentation tank, two quartz sand filter tanks (1.2m in diameter and 2.5m in height), and one ultraviolet disinfection device (300W power). The water pump has a power of 5kW, and the concentrated brine storage tank has a volume of 3m³. 3 ; Soil leaching equipment: Utilizing a drip irrigation network laid 25cm below the topsoil layer, with a pipe spacing of 0.8m, the leaching nozzles are anti-clogging drippers, and the flow rate adjustment device is an electromagnetic flow meter, adjustable within a range of 10-20m³ / h. 3 / h; Circulation and recirculation equipment: The recirculation pipeline is made of corrosion-resistant stainless steel (100mm in diameter), the recirculation pump has a power of 3kW, and the water quality adjustment unit includes a mineralization analyzer, a pH analyzer and a dilution water interface, which can adjust the saline mineralization to 6-8g / L and the pH value to 6.5-7.5; The sensors include 10 soil salinity sensors, 8 soil moisture sensors, 3 mineralization sensors, 2 water quality sensors, and 1 light sensor. The PLC controller is an S7-200, and a touch-screen display terminal is deployed to display the parameters in real time.

[0087] In the process of using the above-mentioned equipment and adopting this method to improve the target saline-alkali land, the photovoltaic modules are first controlled to receive sunlight to generate electricity, which is then converted into 380V AC power by the inverter to power each module. Excess electricity is stored in the lithium battery pack. On cloudy days or at night, the energy storage unit powers the soil and water treatment equipment to ensure all-weather operation. Then, the water pump is controlled to extract shallow underground brackish water (mineralization 7.2g / L) and send it to the sedimentation tank to remove suspended impurities such as silt and sand. After filtration through a quartz sand filter tank and ultraviolet disinfection, it is sent to the reverse osmosis equipment for deep desalination driven by photovoltaic power, producing fresh water (salt content 0.28g / L) and concentrated brine (mineralization 18g / L). The fresh water is sent to the rinsing pipe network, and the concentrated brine is temporarily stored in the concentrated brine storage tank. Then, the flow regulation equipment was used to adjust the freshwater flow rate to 15m. 3 / h, the soil is evenly irrigated through the drip irrigation network, and the fresh water penetrates into the deep soil layer, dissolving the salt in the soil and forming saline water (mineralization 8.5g / L). Then, the back pump is controlled to pump the saline water back to the water quality adjustment unit, add an appropriate amount of desalinated water, adjust the mineralization to 7.5 g / L and the pH value to 7.0, and then send it to the pretreatment unit, where it is mixed with concentrated brine for secondary desalination treatment. The controller monitors soil salinity, soil moisture, and water quality parameters in real time through sensors. When the soil salinity is higher than 1.0 g / kg, the leaching flow rate is increased; when the soil moisture is higher than 25%, the leaching flow rate is decreased; and when the light intensity is lower than 1000 lux, the energy storage unit is activated to supply power.

[0088] After six months of continuous operation, the soil salinity in the area to be improved decreased to 0.6-0.8 g / kg, meeting the requirements for crop cultivation; the utilization rate of brackish water reached over 98%, with no saline discharge, achieving water resource recycling; photovoltaic power supply met all the power needs of the soil and water remediation equipment, eliminating reliance on the power grid and saving approximately 3,000 yuan in electricity costs per month; the shading effect of the photovoltaic panels reduced surface water evaporation by over 35%, effectively inhibiting salt re-moistening and ensuring stable soil improvement results; the soil and water remediation equipment operated stably with a failure rate of less than 5%, was easy to operate, and was suitable for large-scale promotion and application.

[0089] This method was applied to saline-alkali land in an arid and semi-arid region. The shallow groundwater salinity in this area is 3-4 g / L, the soil salinity is 0.9-1.1 g / kg, there is abundant sunshine, but freshwater resources are scarce. The specific water and soil remediation equipment used is as follows: Photovoltaic power supply equipment: Utilizes polycrystalline silicon photovoltaic modules, with a total power output of 30kW, an installation height of 1.2m, and an installation area of ​​500m². 2 The energy storage unit uses a 60kWh lithium battery pack, and the power conversion unit uses a 30kW inverter with an output voltage of 220V. Brackish water treatment equipment: Due to the low mineralization of brackish water, electro-adsorption equipment (90% desalination rate) is selected. The pretreatment unit includes one unit with a volume of 3m³. 3 The system includes a sedimentation tank, a quartz sand filter tank, and a UV disinfection device. The water pump has a power of 3kW, and the concentrated brine storage tank has a volume of 2m³. 3 ; Soil leaching equipment: Utilizing a micro-sprinkler irrigation network laid on the ground surface with a spacing of 1.0m, the leaching nozzles are rotary nozzles with a flow rate adjustment range of 8-15m³ / h. 3 / h; The circulating reflux equipment uses PVC corrosion-resistant pipes (80mm in diameter) for reflux pipelines. The reflux pump has a power of 2kW. The water quality adjustment unit only monitors the mineralization and pH value, and no additional dilution is required (the saline mineralization is stable at 4-5g / L). The sensors include 8 soil salinity sensors, 6 soil moisture sensors, 2 mineralization sensors, 1 water quality sensor, and 1 light sensor. The PLC controller is an S7-1200, and a touch-screen display terminal is deployed to display the parameters in real time.

[0090] In the process of using the above-mentioned equipment and adopting this method to improve the target saline-alkali land, the photovoltaic modules are first controlled to generate electricity, which is then converted to power the soil and water treatment equipment. Excess electricity is stored in the energy storage unit to ensure the stable operation of the equipment. Then, the water pump is controlled to extract brackish water (mineralization 3.5 g / L), which is then sent to the electro-adsorption equipment after pretreatment. Driven by photovoltaic power, the equipment adsorbs ions in the water through electrodes to complete desalination, producing fresh water (salt content 0.35 g / L) and concentrated brine (mineralization 11 g / L). Then control the micro-sprinkler irrigation network at 12m 3 A flow rate of / h is used to evenly spray fresh water onto the soil surface, leaching soil salts to form saline water (mineralization 4.2g / L). Then, the return water pump is controlled to pump the saline water back to the pretreatment unit, where it is mixed with concentrated brine and subjected to secondary electro-adsorption treatment to achieve recycling. The controller uses sensors to adjust the rinsing flow rate and the operating status of the treatment equipment to ensure that the soil salinity gradually decreases.

[0091] After four months of continuous operation, the soil salinity dropped to 0.5-0.7 g / kg, meeting the needs of irrigation and planting; the utilization rate of brackish water reached over 97%, achieving resource recycling; photovoltaic power supply fully met the power demand of the soil and water management equipment, saving approximately 1,800 yuan in electricity costs per month; the shading effect of the photovoltaic panels reduced surface evaporation by more than 30%, effectively inhibiting salt moisture return; the electro-adsorption equipment has low energy consumption and is easy to maintain, making it suitable for small and medium-sized saline-alkali land improvement scenarios.

[0092] The water and soil remediation equipment control method in the above embodiments breaks through the limitations of existing technologies where photovoltaic-driven brackish water desalination and soil rinsing are "independent" or "simply spliced ​​together". It constructs an integrated coupled system of "brackish water desalination - soil rinsing - saline water circulation" and can be combined with photovoltaic power supply equipment to realize the synergistic utilization of clean energy, water resources and soil resources, forming a closed loop. It completely solves the problems of brackish water waste, reliance on fresh water for rinsing, and pollution from concentrated brine discharge, and realizes the simultaneous advancement of salt control and water control.

[0093] This method achieves a dual improvement effect of leaching desalination and shading to suppress moisture reabsorption. It not only dissolves soluble salts in the soil through freshwater leaching, gradually reducing the soil salinity, but also utilizes the shading effect of photovoltaic panels to reduce surface water evaporation and inhibit the migration of deep salts to the surface. This avoids the drawback of rapid salt reabsorption after leaching in traditional leaching techniques, significantly improving the stability and effectiveness of saline-alkali land improvement and solving the problem of the short-lasting improvement effect of existing leaching techniques.

[0094] Corresponding to the above embodiments of the water and soil remediation equipment control method, this embodiment of the invention also provides a water and soil remediation equipment control system, which is applied in the controller of the water and soil remediation equipment; the water and soil remediation equipment further includes: soil washing equipment, brackish water treatment equipment, and circulation recirculation equipment; the system is as follows Figure 2 As shown, it includes: First desalination control module 100: Used to control the brackish water treatment equipment to desalinate the brackish water in the target saline-alkali land to obtain fresh water and concentrated brine; Leaching reflux control module 200: used to control the circulation reflux device to return the rinsed saline water to the brackish water treatment device after the target saline-alkali land is rinsed by the fresh water-based soil leaching equipment. Second desalination control module 300: Used to control the brackish water treatment equipment to desalinate the mixed brine containing salt water and concentrated brine.

[0095] As can be seen from the above-mentioned water and soil management equipment control system, the system deeply couples the brackish water desalination and soil washing processes through the soil washing equipment and brackish water treatment equipment in the water and soil management equipment, and realizes a closed-loop cycle of "brackish water desalination-washing-recirculation-re-desalination" by combining the circulation and recirculation equipment, which greatly reduces the waste of water resources and the energy consumption of water and soil management equipment.

[0096] The water and soil remediation equipment control system provided in this embodiment of the invention has the same implementation principle and technical effects as the aforementioned water and soil remediation equipment control method embodiment. For the sake of brevity, any parts not mentioned in the system embodiment can be referred to the corresponding content in the aforementioned water and soil remediation equipment control method embodiment.

[0097] This embodiment also provides a controller, the structural schematic diagram of which is shown below. Figure 3 As shown, the device includes a processor 101 and a memory 102; wherein, the memory 102 is used to store one or more computer instructions, which are executed by the processor to implement the steps of the above-mentioned water and soil management equipment control method.

[0098] Figure 3 The controller shown also includes a bus 103 and a communication interface 104. The processor 101, the communication interface 104, and the memory 102 are connected via the bus 103.

[0099] The memory 102 may include high-speed random access memory (RAM) and may also include non-volatile memory, such as at least one disk storage device. The bus 103 may be an ISA bus, PCI bus, or EISA bus, etc. The bus can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 3 The symbol is represented by a single double-headed arrow, but this does not mean that there is only one bus or one type of bus.

[0100] The communication interface 104 is used to connect to at least one user terminal and other network units through a network interface, and to send encapsulated IPv4 packets or IPv4 packets to the user terminal through the network interface.

[0101] Processor 101 may be an integrated circuit chip with signal processing capabilities. In implementation, each step of the above method can be completed by the integrated logic circuitry in the hardware of processor 101 or by instructions in software form. The processor 101 can be a general-purpose processor, including a Central Processing Unit (CPU), a Network Processor (NP), etc.; it can also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this disclosure. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this disclosure can be directly manifested as execution by a hardware decoding processor, or execution by a combination of hardware and software modules in the decoding processor. The software module can reside in a mature storage medium in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, or registers. This storage medium is located in memory 102. The processor 101 reads the information in memory 102 and, in conjunction with its hardware, completes the steps of the method described in the foregoing embodiments.

[0102] This invention also provides a storage medium storing a computer program, which, when run by a processor, executes the steps of the water and soil management equipment control method described in the foregoing embodiments.

[0103] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, devices, and methods can be implemented in other ways. The system embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the coupling or direct coupling or communication connection shown or discussed may be through some communication interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0104] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0105] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0106] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a processor-executable, non-volatile, computer-readable storage medium. Based on this understanding, the technical solution of this invention, essentially, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, electronic device, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0107] Finally, it should be noted that the above-described embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for controlling water and soil management equipment, characterized in that, Used in controllers for soil and water conservation equipment; The water and soil remediation equipment further includes: soil washing equipment, brackish water treatment equipment, and circulation recirculation equipment; the method includes: The brackish water treatment equipment is controlled to desalinate the brackish water in the target saline-alkali land to obtain fresh water and concentrated brine. After the target saline-alkali land is leached by the soil leaching equipment controlled by the fresh water, the circulating return equipment is controlled to return the leached saline water to the brackish water treatment equipment. The brackish water treatment equipment is controlled to desalinate the mixed brine of the saline water and the concentrated brine.

2. The water and soil management equipment control method according to claim 1, characterized in that, Controlling the brackish water treatment equipment to desalinate the brackish water in the target saline-alkali land to obtain fresh water and concentrated brine includes: Obtain the mineralization degree of shallow underground brackish water and surface brackish water in the target saline-alkali land; The desalination strategy for brackish water is determined using the mineralization degree, and the freshwater salinity threshold corresponding to the desalination strategy is obtained. The desalination treatment strategy controls the brackish water treatment equipment to desalinate the brackish water, obtaining fresh water with a salt content not higher than the fresh water salt content threshold, and storing the desalinated concentrated brine in the concentrated brine storage tank of the brackish water treatment equipment.

3. The water and soil management equipment control method according to claim 2, characterized in that, Determining desalination strategies for brackish water using the aforementioned mineralization includes: If the salinity is less than a preset salinity threshold, then a first desalination treatment strategy for the brackish water is determined based on the electro-adsorption device in the brackish water treatment equipment. If the salinity is not less than the salinity threshold, then a second desalination strategy for the brackish water is determined based on the reverse osmosis equipment in the brackish water treatment equipment.

4. The water and soil management equipment control method according to claim 1, characterized in that, Using the freshwater-controlled soil leaching equipment to leach the target saline-alkali land, including: Real-time data collection of soil salinity, humidity, and permeability in the target saline-alkali land; The leaching execution strategy of the flow regulation device in the soil leaching equipment is determined using the salinity, humidity value, and permeability. The rinsing execution strategy controls the flow regulation device to rinse the freshwater to the target saline-alkali land.

5. The water and soil management equipment control method according to claim 4, characterized in that, The steps of determining the leaching execution strategy of the flow regulation device in the soil leaching equipment using the salinity, humidity, and permeability include: If the salt content is greater than a preset soil salt content threshold, the humidity value is less than a preset soil humidity threshold, and the permeability is less than a preset soil permeability threshold, then the first rinsing execution strategy of the soil rinsing equipment is determined by using the first total rinsing water volume, the first rinsing flow rate, and the first rinsing duration of the flow regulating device. If the salt content is not greater than the soil salt content threshold, the humidity value is not less than the soil humidity threshold, and the permeability is not less than the soil permeability threshold, then the second rinsing execution strategy of the soil rinsing equipment is determined using the second total rinsing water volume, the second rinsing flow rate, and the second rinsing duration of the flow rate regulating device; wherein, the first total rinsing water volume is greater than the second total rinsing water volume, the first rinsing flow rate is less than the second rinsing flow rate, and the first rinsing duration is greater than the second rinsing duration.

6. The water and soil management equipment control method according to claim 1, characterized in that, Controlling the circulation reflux device to return the rinsed brine to the brackish water treatment device includes: Real-time data collection of the water volume and mineralization of the brine after rinsing; The operating parameters of the return pump in the circulation recirculation device are determined using the real-time water volume, and the water quality adjustment strategy of the circulation recirculation device is determined using the mineralization. The water quality adjustment strategy controls the brackish water treatment equipment to add fresh water to the saline water until the salinity is lower than the target salinity corresponding to the water quality adjustment strategy. Based on the operating parameters, the back pump is controlled to return the saline water to the brackish water treatment equipment.

7. The water and soil management equipment control method according to claim 1, characterized in that, Controlling the circulation reflux device to return the rinsed brine to the brackish water treatment device includes: Real-time data collection of the water volume and pH of the saline solution after rinsing; The operating parameters of the return pump in the circulation recirculation device are determined using the real-time water volume, and the acid-base adjustment strategy of the water quality adjustment unit in the circulation recirculation device is determined using the pH value. The acid-base adjustment strategy controls the water quality adjustment unit to add acid-base adjuster to the saline solution until the pH reaches the target pH value corresponding to the acid-base adjustment strategy. Based on the operating parameters, the back pump is controlled to return the saline water to the brackish water treatment equipment.

8. The water and soil management equipment control method according to claim 2, characterized in that, Controlling the brackish water treatment equipment to desalinate the mixed brine of the saline and concentrated brine includes: The brackish water treatment equipment is controlled to input the brine into the concentrated brine storage tank to obtain a mixed brine of the brine and the concentrated brine; The purification strategy of the brackish water treatment equipment is determined using the water quality data of the mixed brine, and the impurity threshold of the mixed brine corresponding to the purification strategy is obtained. The purification treatment strategy controls the purification treatment equipment in the brackish water treatment equipment to filter the mixed brine, so as to obtain mixed brine with impurities not exceeding the mixed brine impurity threshold. The desalination strategy is used to control the brackish water treatment equipment to desalinate the mixed brine.

9. A water and soil management equipment control system, characterized in that, Used in controllers for soil and water conservation equipment; The water and soil remediation equipment also includes: soil washing equipment, brackish water treatment equipment, and a circulation and recirculation system; the system includes: First desalination control module: used to control the brackish water treatment equipment to desalinate the brackish water in the target saline-alkali land to obtain fresh water and concentrated brine; Leaching and reflux control module: used to control the soil leaching equipment to leach the target saline-alkali land based on the fresh water, and then control the circulation and reflux equipment to return the leached saline water to the brackish water treatment equipment; The second desalination control module is used to control the brackish water treatment equipment to desalinate the mixed brine of the brine and the concentrated brine.

10. A controller, characterized in that, The controller includes a processor and a memory, the memory storing computer-executable instructions that can be executed by the processor, the processor executing the computer-executable instructions to implement the steps of the water and soil management equipment control method according to any one of claims 1 to 8.

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