Regional intelligent salt taking, salt washing, salt drying and alkali making system for saline-alkali land surface area salt layer and hidden layer salt water in arid and semi-arid regions

Abstract

The invention provides an arid and semi-arid region saline-alkali land surface area salt layer and hidden layer salt water regional intelligent salt taking, salt washing, salt drying and alkali making system, which comprises a saline-alkali land surface area salt layer collection module, a saline-alkali land surface area salt layer collection module and a salt drying module, the hidden layer salt water collecting module is used for extracting salt water of the saline-alkali soil hidden layer; the concentrated salt-leaching and alkali-making module is used for performing salt-leaching and alkali-making treatment on the collected saline soil and saline water; the energy supply and recovery module is used for providing energy support for the system and recovering waste heat; and the remote monitoring and management system is used for carrying out real-time monitoring and centralized control on the system. The system can efficiently improve the saline-alkali soil, quickly and effectively remove accumulated salt on the surface layer of the saline-alkali soil, reduce the salt content of the soil, improve the physical and chemical properties of the soil, improve the utilization value of the saline-alkali soil in agriculture and animal husbandry, create a good soil environment for growth of crops and other plants, and contribute to improving the yield and quality of the agriculture and animal husbandry; agricultural product supply is increased.

Description

Technical Field

[0001] The invention relates to a desalination and alkali-making technology for saline-alkali land, and in particular to a regional intelligent salt extraction, washing, drying and alkali-making system for surface salt layers and subsurface salt water in saline-alkali land in arid and semi-arid areas, belonging to the technical field of desalination and alkali-making. Background Art

[0002] The management and utilization of saline-alkali and saline-affected land is a global problem. my country has a lot of saline-alkali (salt-affected) land and great development potential. At the same time, the salinization trend of cultivated land in some areas has intensified. Carrying out comprehensive utilization of saline-alkali (salt-affected) land is an important way to improve the ecological environment, supplement the reserve resources of cultivated land, protect the existing cultivated land, and improve the comprehensive agricultural production capacity. In arid and semi-arid areas, the improvement of saline-alkali land is a long-term and complex challenge. Traditional improvement methods, such as freshwater leaching, alkali pressure from imported soil, and application of chemical improvers, have problems such as high cost, poor effect, easy return of salt, and waste of water resources. Especially in areas with scarce water resources, the application of these methods is severely restricted. The present invention aims to provide an innovative system, which can collect and process the surface salt layer and underground subsurface salt water of large-area saline-alkali land in a regional intelligent manner through mechanical salt extraction and centralized salt washing (alkali production), so as to fundamentally and effectively reduce the total amount of soil salt, realize large-scale and efficient improvement of saline-alkali land, and at the same time, utilize the removed salt as a resource to turn waste into treasure. Summary of the invention

[0003] The purpose of the present invention is to provide a regional intelligent salt extraction, salt washing, salt drying and alkali making system for saline-alkali surface salt layers and subsurface salt water in arid and semi-arid areas.

[0004] The technical problem to be solved by the present invention is achieved through the following technical solution: the system comprises: (1) A salt layer collection module on the saline-alkali land surface, used to collect the accumulated salt on the saline-alkali land surface; (2) a submerged salt water collection module, used to extract salt water from the submerged layer of saline-alkali land; (3) Centralized salt washing and alkali making module, used to wash salt and make alkali from the collected saline soil and salt water; (4) Energy supply and recovery module, used to provide energy support for the system and recover waste heat; (5) Remote monitoring and management system, used for real-time monitoring and centralized control of the system.

[0005] The saline-alkali surface area salt layer collection module comprises: (1) Mechanical salt extraction equipment, including multiple mobile salt extraction machines, each of which is equipped with a brush plate system and a suction nozzle system for loosening and collecting salt soil; (2) Salt storage system, used to temporarily store the collected salt soil; • Intelligent control system, which realizes intelligent control of the operation process of the salt extractor through sensors and microcomputer controllers.

[0006] The submerged salt water collection module comprises: (1) a salt water extraction device, comprising a plurality of salt water extraction wells and a submersible pump for extracting salt water from the submerged layer; (2) a salt water pipeline for conveying the extracted salt water to a centralized treatment system; (3) Intelligent monitoring system, which uses water level sensors and flow sensors to achieve real-time monitoring of the salt water extraction process.

[0007] The centralized salt washing and alkali making module comprises: (1) a salt washing device, comprising a plurality of salt washing pools, a stirring device and a filtering device, for mixing saline soil with salt water and separating the salt water; (2) Alkali-making equipment, which uses chemical precipitation or electrolysis to further process the brine to produce industrial alkali; (3) Resource recovery system, used to recycle by-products generated during the salt washing process.

[0008] The energy supply and recovery module includes: (1) Solar power generation system, used to convert solar energy into electrical energy; (2) Wind power generation system, used to generate electricity using wind energy; (3) Waste heat recovery device, used to recover waste heat from the alkali production process and use it for preheating brine or other links.

[0009] The remote monitoring and management system comprises: (1) Data acquisition and transmission system, used to collect and transmit system operation data; (2) Monitoring center, used to monitor and analyze the system's operating data in real time; (3) Fault diagnosis and alarm system, used to automatically analyze the cause of the fault and notify the operator in a timely manner.

[0010] The method comprises the following steps: (1) Collection of salt layer on saline-alkali land surface: The accumulated salt on the saline-alkali land surface is collected by using the brush plate system and suction nozzle system of the mechanical salt extraction device; (2) Collection of subsurface salt water: Extracting salt water from the subsurface of saline-alkali land through a salt water extraction device; (3) Centralized salt washing and alkali production: the collected salt soil and salt water are added to the salt washing pool, and the pure brine is separated through the stirring and filtering device, and then the industrial alkali is produced through the alkali production device; (4) New energy supply uses solar power generation systems and wind power generation systems to provide energy support for the system, and recovers waste heat through waste heat recovery devices; (5) Remote monitoring and management: The system operation data is transmitted to the remote monitoring center through the data acquisition and transmission system, and the operator conducts real-time monitoring and remote control of the system at the monitoring center.

[0011] Due to the adoption of the above technical scheme, the advantages and positive effects of the present invention are as follows: In terms of efficient improvement of saline-alkali land: it can quickly and effectively remove the accumulated salt on the surface of saline-alkali land, reduce the salt content of soil, improve the physical and chemical properties of soil, improve the agricultural and animal husbandry utilization value of saline-alkali land, create a good soil environment for the growth of crops and other plants, help to improve the output and quality of agriculture and animal husbandry, increase the supply of agricultural products and farmers' income. In terms of resource recovery and reuse: the salt in saline-alkali land is converted into valuable industrial products, the recovery and reuse of resources are realized, the utilization efficiency of resources is improved, the waste of resources is reduced, and waste is turned into treasure, which has significant economic and environmental benefits. In terms of energy saving and consumption reduction: the use of renewable energy such as solar energy and wind energy to power the system reduces the consumption of traditional energy and reduces energy costs, while reducing greenhouse gas emissions, meeting the requirements of sustainable development. In terms of automation: each module of the system is equipped with an intelligent control system, which can realize automatic operation and management, reduce manual intervention, improve operation efficiency and accuracy, reduce labor intensity, and improve the reliability and stability of the system. DETAILED DESCRIPTION

[0012] 1. System composition 1. Salt layer collection module for saline-alkali surface area (1) Mechanical salt extraction device: including the development of an intelligent integrated dry-type salt removal machine for the surface area of ​​saline-alkali land (a patent has been applied for separately). Each salt extraction machine is equipped with a brush plate system, an air-blowing dust removal system and a suction nozzle system. The brush plate system consists of multiple brush plates, which are bundled with a mixture of steel wire and nylon wire. They can fully cover and loosen the surface layer of the saline-alkali land, making the salt soil loose. The air-blowing dust removal system can dust the loosened salt layer, which is convenient for subsequent dust removal operations. The suction nozzle system uses strong suction to suck in the loosened and dusted salt soil and transport it to the salt storage system.

[0013] (2) Salt storage system: Each salt extractor is equipped with a salt storage tank for temporarily storing the collected salt soil. The salt storage tank has sufficient capacity to meet the needs of long-term operation and is equipped with a controllable valve to facilitate the unloading of the salt soil.

[0014] (3) Intelligent control system: Through sensors and microcomputer controllers, the operation process of the salt extractor is intelligently controlled. Sensors include salt layer sensors, soil moisture sensors, position sensors, etc., which can monitor the soil conditions of saline-alkali land and the operating status of the salt extractor in real time. Based on the information fed back by the sensors, the microcomputer controller automatically adjusts the loosening depth of the brush system, the blowing and suction force of the fan system, the height position of the suction nozzle system and other parameters to achieve accurate removal of salt layers on the surface area of ​​saline-alkali land under different salinity and terrain conditions.

[0015] 2. Subsurface salt water collection module (1) Salt water extraction device: In the submerged layer of saline-alkali land, drainage ditches or salt water extraction wells are constructed according to the safe groundwater depth, and the submerged salt water is extracted to the surface through a submersible pump. The design of salt water extraction is optimized according to the geological conditions and salt water distribution of the saline-alkali land to ensure that the submerged salt water can be extracted efficiently and evenly.

[0016] (2) Salt water transportation pipeline: The extracted salt water is transported to the centralized treatment system through pipelines. The pipelines are made of open channels or corrosion-resistant materials, which can withstand long-term erosion by salt water and have good sealing properties to prevent salt water leakage during transportation.

[0017] (3) Intelligent monitoring system: The water level and flow rate of salt water extraction are monitored through water level sensors and flow sensors to achieve real-time monitoring of the salt water extraction process. Based on the monitoring data, the operating parameters of the submersible pump are automatically adjusted to ensure stable extraction of salt water, and problems that arise during the salt water extraction process can be discovered and handled in a timely manner.

[0018] 3. Centralized salt washing and alkali making module (1) Salt washing device: including the construction of a salt washing pool, which is equipped with a stirring device and a filtering device. The collected saline soil and the extracted subsurface salt water are added to the salt washing pool together, and the saline soil and salt water are fully mixed through the stirring device to dissolve the salt in the water. The filtering device is used to separate the salt water after salt washing from impurities such as mud, straw, gravel, etc. to obtain pure salt water.

[0019] (2) Alkali production equipment: The brine obtained by washing salt is further processed by chemical precipitation or electrolysis to produce industrial alkali. The chemical precipitation method adds a precipitant to the brine, causing the sodium ions in the brine to react with the precipitant to produce alkaline substances such as sodium carbonate, and then obtains solid alkali through filtering and drying. The electrolysis method directly produces alkaline substances such as sodium hydroxide by electrolyzing brine.

[0020] (3) Resource recovery system: The by-products such as mud, straw, and gravel generated during the salt washing process are recovered and processed to extract valuable components, thereby achieving comprehensive utilization of resources and reducing waste emissions.

[0021] (4) Intelligent control system: Intelligent control of the salt washing and alkali making process is achieved through sensors and automatic control equipment. Sensors include salinity sensors, pH sensors, temperature sensors, etc., which can monitor the salinity, pH, and temperature of the brine in real time. The automatic control equipment automatically adjusts the stirring speed of the salt washing pool, the reaction conditions of the alkali making device, and other parameters based on the monitoring data to ensure the efficient and stable operation of the salt washing and alkali making process, and can promptly detect and handle abnormal situations that occur during the process.

[0022] 4. Energy supply module (1) Solar power generation system: Solar photovoltaic panels are installed in the area where the system is located to convert solar energy into electrical energy, providing partial power support for the operation of the entire system. The installation position and angle of the solar photovoltaic panels are optimized according to the local lighting conditions to ensure that they can absorb solar energy to the maximum extent.

[0023] (2) Wind power generation system: When conditions permit, install wind turbines to generate electricity using wind energy to further improve the energy self-sufficiency rate of the system. The installation height and location of the wind turbines should be reasonably selected according to the local wind speed and direction to ensure that the wind turbines can operate stably and efficiently.

[0024] (3) Waste heat recovery device: During the reaction process of the alkali production device, a large amount of waste heat will be generated. Through the waste heat recovery device, this waste heat can be recycled and utilized to preheat the salt water in the salt washing pool or provide heat energy for other parts of the system, thereby improving energy utilization efficiency and reducing system operating costs.

[0025] 5. Remote monitoring and management system (1) Data acquisition and transmission system: The system collects operating data from the salt layer collection module on the surface of saline-alkali land, the subsurface salt water collection module, the centralized salt washing and alkali production module, etc. through sensors, including information such as the amount of salt soil collected, the amount of salt water extracted, the output of salt washing and alkali production, and the equipment operating status. The data is then transmitted to the remote monitoring center through a wireless communication network.

[0026] (2) Monitoring center: In the remote monitoring center, the system's operating data is monitored and analyzed in real time through monitoring software, and various reports and curves are generated to intuitively display the system's operating status. Operators can remotely control the system through the monitoring center, such as starting and stopping various devices, adjusting the operating parameters of the equipment, etc., to achieve centralized management and scheduling of the system.

[0027] (3) Fault diagnosis and alarm system: When a fault or abnormality occurs in the system, the fault diagnosis system can automatically analyze the cause of the fault and promptly notify the operator through the alarm device. At the same time, the system will record the fault information in the database to facilitate subsequent fault analysis and maintenance work.

[0028] 2. Technical Principle 1. Collection of salt layers on saline-alkali land surface: Develop an intelligent integrated dry remover for salt layers on saline-alkali land surface. The brush disc system of the mechanical salt extraction device loosens the saline-alkali soil layer to make the salt soil loose. Subsequently, the air blowing and dusting system can dust the loosened salt layer to facilitate the subsequent dust collection operation. The suction nozzle system sucks in the loosened salt soil through strong suction and transports it to the salt storage system for storage. The intelligent control system adjusts the operating parameters of the salt extractor in real time according to the information fed back by the sensor to ensure the efficient collection of salt soil.

[0029] 2. Collection of submerged salt water: In the submerged layer of saline-alkali land, salt water is pumped to the surface through a salt water extraction device and transported to a centralized treatment system through a salt water pipeline. The intelligent monitoring system monitors the salt water extraction process in real time and automatically adjusts the operating parameters of the submersible pump to ensure stable extraction of salt water.

[0030] 3. Centralized salt washing and alkali production: The collected saline soil and the extracted subsurface salt water are added to the salt washing pool, and the saline soil and salt water are fully mixed through the stirring device to dissolve the salt in the water. After separation by the filtering device, pure salt water is obtained. The salt water is then processed by the alkali production device to produce industrial alkali. At the same time, the resource recovery system recycles the by-products produced in the salt washing process to achieve comprehensive utilization of resources.

[0031] 4. New energy supply: Solar power generation system and wind power generation system provide partial power support for the operation of the system. The waste heat recovery device recycles the waste heat in the alkali production process to improve energy utilization efficiency.

[0032] 5. Remote monitoring and management: The system operation data is transmitted to the remote monitoring center through the data acquisition and transmission system. The operator can monitor and remotely control the system in real time at the monitoring center to achieve centralized management and scheduling of the system. When the system fails, the fault diagnosis and alarm system will promptly notify the operator to handle it.

[0033] III. Innovations of the Invention 1. Regional intelligent collection and processing: This invention proposes for the first time a regional intelligent salt extraction, salt washing, and salt drying (alkali production) system, which can centrally collect and process large-area saline-alkali land surface salt layers and underground subsurface salt water. Through the intelligent control system, the precise removal of the surface salt layer of the saline-alkali land and the efficient extraction of the subsurface salt water can be achieved, fundamentally cutting off the vicious cycle of salt, continuously reducing the total amount of salt, and improving the efficiency and effect of saline-alkali land improvement. Compared with the traditional decentralized and extensive improvement methods, it is significantly innovative.

[0034] 2. Resource Utilization of Salt: This invention not only solves the problem of saline-alkali land improvement, but also utilizes the removed salt as a resource to produce industrial salt and alkali, thus turning waste into treasure. This is completely different from the previous improvement methods, which caused salt to circulate in an infinite vicious cycle in the original time and space, or treated salt as waste. It not only cuts off the circulation track of salt, but also reduces potential pollution to the environment, and creates additional economic value, which has important environmental and economic benefits.

[0035] 3. Comprehensive utilization of multiple energy sources: The system combines multiple renewable energy sources such as solar energy and wind energy to provide energy support for its own operation, reducing dependence on traditional energy, reducing operating costs, and reducing carbon emissions, which is in line with the concept of green development. The use of waste heat recovery devices further improves energy utilization efficiency and reflects the refined management and efficient utilization of energy.

[0036] 4. Remote monitoring and management: Through the remote monitoring and management system, real-time monitoring and centralized control of the entire system is achieved, which improves the system's operating efficiency and management level. Operators can understand the system's operating status anytime and anywhere, discover and handle problems in a timely manner, reduce on-site maintenance workload and labor costs, and improve system reliability and stability.

[0037] Wide scope of application: The system is widely applicable to various types of saline-alkali land in arid and semi-arid areas. It is not restricted by terrain, water source and water quality, and soil conditions. It has broad application value and is of extremely important practical and long-term significance for areas such as northern my country where saline-alkali land is widely distributed.

[0038] IV. Expected Results 1. Significant improvement effect: After being treated by this system, the salt content in the surface layer of the saline-alkali land is greatly reduced, the soil structure is improved, and the soil fertility is gradually restored. It can effectively improve the yield and quality of crops (grassland) in the saline-alkali land, increase the income of farmers and herdsmen, and promote the development of local agriculture and animal husbandry.

[0039] 2. Significant economic benefits: By recycling the removed salt and producing industrial salt and alkali, certain economic benefits can be generated. At the same time, the cost of saline-alkali land improvement is reduced and the development value of saline-alkali land is increased, which is of great significance for promoting the development of agricultural and animal husbandry economy in saline-alkali land areas.

[0040] 3. Significant ecological benefits: It reduces the waste of water resources and avoids the over-exploitation of groundwater and the damage to the ecological environment caused by traditional improvement methods. At the same time, it greatly reduces the frequency and intensity of salt-alkali dust storms, prevents the spread of desertification, and reduces salt pollution to soil and water bodies, which is not only conducive to improving the ecological environment quality in saline-alkali areas, but also conducive to improving a large range of even national ecological environment and promoting ecological balance.

[0041] 4. High energy efficiency: Using renewable energy such as solar energy and wind energy to power the system reduces the consumption of traditional energy, reduces energy costs, and reduces greenhouse gas emissions, meeting the requirements of green development. The use of waste heat recovery devices further improves energy efficiency and reduces system operating costs.

[0042] 5. Application Prospects As my country pays more and more attention to and invests in the improvement of saline-alkali land, and the requirements for water conservation and environmental protection are increasing, the regional intelligent salt collection, washing and drying (alkali production) system for surface salt layer and subsurface salt water in arid and semi-arid areas of saline-alkali land of the present invention has broad application prospects. The system can not only effectively solve the problem of saline-alkali land improvement, but also realize the recycling and reuse of resources, with significant economic, social and environmental benefits. It is expected to be widely promoted and applied in the field of saline-alkali land improvement, and make positive contributions to the sustainable development of agriculture and continuous improvement of the ecological environment in my country.

[0043] The above invention application elaborates on the innovative features, advantages, expected effects and application prospects of the present invention in detail, and lists specific claims, highlighting the new idea of ​​mechanically extracting salt, centralized salt washing and alkali production from the surface salt layers and underground subsurface salt water of large areas of saline-alkali land, demonstrating its scientific and technological innovation and practical application value in the improvement and resource utilization of saline-alkali land.

Claims

1. A regional intelligent system for collecting, washing, drying and making salt from salt layers and subsurface salt water in arid and semi-arid areas, characterized in that: The system comprises: (1) A salt layer collection module on the saline-alkali land surface, used to collect the accumulated salt on the saline-alkali land surface; (2) a submerged salt water collection module, used to extract salt water from the submerged layer of saline-alkali land; (3) Centralized salt washing and alkali making module, used to wash salt and make alkali from the collected saline soil and salt water; (4) Energy supply and recovery module, used to provide energy support for the system and recover waste heat; (5) Remote monitoring and management system, used for real-time monitoring and centralized control of the system.

2. The system according to claim 1, characterized in that The saline-alkali surface area salt layer collection module comprises: (1) Mechanical salt extraction equipment, including multiple mobile salt extraction machines, each of which is equipped with a brush plate system and a suction nozzle system for loosening and collecting salt soil; (2) Salt storage system, used to temporarily store the collected salt soil; • Intelligent control system, which realizes intelligent control of the operation process of the salt extractor through sensors and microcomputer controllers.

3. The system according to claim 1, characterized in that The submerged salt water collection module comprises: (1) a salt water extraction device, comprising a plurality of salt water extraction wells and a submersible pump for extracting salt water from the submerged layer; (2) a salt water pipeline for conveying the extracted salt water to a centralized treatment system; (3) Intelligent monitoring system, which uses water level sensors and flow sensors to achieve real-time monitoring of the salt water extraction process.

4. The system according to claim 1, characterized in that The centralized salt washing and alkali making module comprises: (1) a salt washing device, comprising a plurality of salt washing pools, a stirring device and a filtering device, for mixing saline soil with salt water and separating the salt water; (2) Alkali-making equipment, which uses chemical precipitation or electrolysis to further process the brine to produce industrial alkali; (3) Resource recovery system, used to recycle by-products generated during the salt washing process.

5. The system according to claim 1, characterized in that The energy supply and recovery module includes: (1) Solar power generation system, used to convert solar energy into electrical energy; (2) Wind power generation system, used to generate electricity using wind energy; (3) Waste heat recovery device, used to recover waste heat from the alkali production process and use it for preheating brine or other links.

6. The system according to claim 1, characterized in that The remote monitoring and management system comprises: (1) Data acquisition and transmission system, used to collect and transmit system operation data; (2) Monitoring center, used to monitor and analyze the system's operating data in real time; (3) Fault diagnosis and alarm system, used to automatically analyze the cause of the fault and notify the operator in a timely manner.

7. A method for regional intelligent collection, washing and drying of salt (alkali production) in arid and semi-arid areas of saline-alkali land surface salt layer and subsurface salt water according to any one of claims 1 to 6, characterized in that: The method comprises the following steps: (1) Collection of salt layer on saline-alkali land surface: The accumulated salt on the saline-alkali land surface is collected by using the brush plate system and suction nozzle system of the mechanical salt extraction device; (2) Collection of subsurface salt water: Extracting salt water from the subsurface of saline-alkali land through a salt water extraction device; (3) Centralized salt washing and alkali production: the collected salt soil and salt water are added to the salt washing pool, and the pure brine is separated through the stirring and filtering device, and then the industrial alkali is produced through the alkali production device; (4) New energy supply uses solar power generation systems and wind power generation systems to provide energy support for the system, and recovers waste heat through waste heat recovery devices; (5) Remote monitoring and management: The system operation data is transmitted to the remote monitoring center through the data acquisition and transmission system, and the operator conducts real-time monitoring and remote control of the system at the monitoring center.