191 results about "Brackish water" patented technology

The invention discloses a water-grain-energy-ecology association system collaborative configuration method considering unconventional water utilization, which comprises the following steps: firstly, constructing a water-grain-energy-ecology association system collaborative configuration model, and quantitatively analyzing the interaction relationship among water resource distribution, agricultural production, energy utilization and ecological protection; a vine copula method is adopted to quantify a complex interdependence relationship among a plurality of random variables; vine copula and a multi-stage stochastic optimization method are integrated to solve the model, and the influence of the brackish water utilization rate, the joint default probability and the incoming water level on the WFEE association system is analyzed. According to the method, cooperative configuration of unconventional and conventional water resources is considered, the pressure of shortage of regional water resources is relieved, and the complex mutual influence relationship among the subsystems is reflected.

The invention relates to the technical field of seawater desalination, in particular to a seawater desalination reverse osmosis membrane, a preparation method and application. The seawater desalination reverse osmosis membrane is prepared by the preparation method. The preparation method comprises the following steps: immersing the prepared support layer into a water phase solution, and then taking out the support layer adsorbing the water phase solution; immersing the support layer adsorbing the water phase solution into a first oil phase solution, and forming a primary reverse osmosis membrane through a first interfacial polymerization reaction; then, taking out the primary reverse osmosis membrane, and carrying out first drying treatment under a steam condition; and immersing the primary reverse osmosis membrane into a second oil phase solution, and carrying out a second interfacial polymerization reaction to form the seawater desalination reverse osmosis membrane. The application refers to the application of the reverse osmosis membrane for seawater desalination in the aspects of reclaimed water reuse, seawater desalination and brackish water desalination. According to the invention, the seawater desalination reverse osmosis membrane which simultaneously meets high desalination rate and high water flux can be prepared.

The invention relates to the technical field of agricultural engineering and ecological environment protection, in particular to a saline-alkali soil desalination improvement system and method based on brackish water recycling. The system comprises a data collection module which collects soil salinity data, meteorological data and crop growth data of the saline-alkali land in real time; the data processing and analyzing module is used for receiving and preprocessing the soil salinity data, the meteorological data and the crop growth data of the saline-alkali land, constructing a soil salinity prediction model and outputting a soil salinity prediction result; the irrigation strategy decision module is used for generating an optimal irrigation strategy by adopting a reinforcement learning algorithm according to the soil salinity prediction result and the preprocessed crop growth data; and the irrigation control system is used for performing brackish water irrigation operation on the saline-alkali soil according to the optimal irrigation strategy. Precise regulation and control of saline-alkali soil salinity can be achieved, brackish water is adopted as irrigation water, water resources are saved to a certain degree, and therefore the improvement cost of saline-alkali soil is reduced.

The invention discloses a saline-alkali soil multi-water-source accurate salt control irrigation and drainage integrated system and equipment, and relates to the technical field of saline-alkali soil irrigation and drainage, and the system comprises a multi-water-source intelligent evaluation and dynamic allocation module, an accurate salt control-irrigation and drainage cooperative regulation and control module and an integrated anti-blocking salt discharge and tail water reuse module; by monitoring water source salinity, soil data and a crop salt demand model in real time, dynamically calculating an optimal water source combination, for example, low-salt rainwater is preferentially used for sensitive crops, and a valve is automatically regulated and controlled to switch water sources, the scheme has the advantages that high-salt brackish water is prevented from aggravating salinization, the water resource utilization rate is increased by 30% or above, and blindness of traditional artificial experience allocation is solved; meanwhile, decision making is driven through multi-module data linkage, for example, the irrigation and drainage proportion is regulated and controlled through water source data, and the control unit responds to salinity exceeding within 10 seconds; the scheme has the advantages that manual intervention is reduced by 90%, the engineering advantages of anti-corrosion flow guide design, water flow driving energy conservation, modularization, easy maintenance and the like are implied, and the method is suitable for various saline-alkali land terrains.

The invention discloses an asymmetric condensation multi-tube spherical particle interface evaporation seawater desalination system. An interface evaporator adopts a spherical heat absorption particle floating accumulation form. The multiple heat collection glass tubes are connected in parallel to form a light absorption area and located at the bottom of the inner side of the condenser, the spherical heat absorption particles absorb sunlight and heat water on the surface layer, and steam is generated by adjusting the opening degree of an air valve of the heat collection glass tubes to be matched with movement of light spots. A heat pipe evaporation section side of the steam condensation waste heat recoverer adopts a downwards inclined drainage fin, so that condensed water quickly falls off, and a heat pipe condensation section side is used for preheating new inlet seawater of the system. The system can automatically float along with the change of the water level by adopting a spherical heat-absorbing particle floating form, and is not limited by the space of the circular heat-collecting glass tube; multiple heat collection glass tubes are connected in parallel, so that the number of condensers and consumables can be reduced; the steam condensation waste heat recoverer enables a steam end and a seawater end to be physically isolated, flow resistance is small, and heat exchange efficiency is high. The system can be applied to the fields of seawater, brackish water desalination and the like, and solves the problem of drinking water shortage.

The utility model belongs to the technical field of seawater desalination, and particularly relates to a low-energy-consumption brackish water desalination and water purification device which comprises a filter box, a filter plate is arranged in the filter box, the top end of the filter plate penetrates through the center of the top end of the filter box and is in sliding connection with the filter box, and a mounting plate is fixedly mounted at the top end of the filter plate. A mounting plate is arranged in the box cover, an embedding seat is fixedly arranged at the bottom end of the mounting plate, a disassembly assembly is arranged in the top end of the filter box and is connected with the embedding seat, a solar panel is arranged above the box cover, an evaporation barrel is arranged in the desalination box, and one side of a mounting seat II is connected with a condenser. The problems that in the prior art, sand and stone precipitation needs to be conducted on seawater in a precipitation tank firstly, sand and stone precipitation needs a certain time, meanwhile, the device continuously injects the seawater through a water pump when the seawater is precipitated in the precipitation tank, the flowability of the water enables the precipitated sand and stone to float again, and therefore the use efficiency is affected are solved.

The utility model discloses a solar heat-driven absorption type refrigerating, humidifying and dehumidifying seawater desalination system, which comprises a seawater flowing system, an air circulating system, an absorption type refrigerating circulating system and a solar heat collection circulating system. The fresh water preparation device has the beneficial effects that (1) circulating air is used as a carrier of water, fresh water is prepared by humidifying and dehumidifying the air through seawater or brackish water, the water quality is safe, the operation is safe and reliable, and the fresh water preparation device is suitable for small-scale fresh water preparation; and (2) the solar absorption refrigeration technology and the humidifying and dehumidifying seawater desalination technology are coupled, so that the dependence on energy is low, the system flexibility is high, and the distributed and miniaturized development of the seawater desalination system is facilitated. And (3) the cooling capacity and the heat of the evaporator, the condenser and the absorber of the absorption refrigeration cycle system can be effectively utilized in the seawater flowing and air circulation system, so that the water yield and the water production ratio of the system are improved, and the seawater desalination efficiency is improved.

A marine propulsion system with a closed coolant loop is described. The marine propulsion system has a starboard heat exchanger and a port side heat exchanger that provides improved cooling and increases engine life compared with traditional open loop cooling systems, particularly in harsh environments such as salt water, brackish water, swamp, shallow or sediment and debris rich water. The two discrete heat exchangers are mounted to the lower unit of the marine propulsion system and also serve to improve hydrodynamic performance of the marine propulsion system.

The invention discloses a high-water-permeability anti-pollution reverse osmosis membrane and a preparation method thereof, and belongs to the technical field of water treatment membranes. The reverse osmosis membrane comprises a porous support layer, a polyamide separation layer and a composite anti-pollution functional layer, and the composite anti-pollution functional layer is composed of a polyvinyl alcohol matrix and a nanoscale water channel material uniformly dispersed in the polyvinyl alcohol matrix. Comprising the steps of coating liquid preparation, base membrane pretreatment, composite functional layer construction, cross-linking and curing, a rapid transmission path is provided for water molecules by introducing a nanoscale water channel material, the water flux of the reverse osmosis membrane is greatly improved on the premise that the excellent pollution resistance of a PVA coating and the high selectivity of the membrane are kept, and the service life of the reverse osmosis membrane is prolonged. The technical problem that the membrane flux is severely reduced due to a traditional PVA coating is solved, and the method has wide application prospects in the fields of seawater desalination, brackish water desalination, ultrapure water preparation, wastewater reuse and the like.

The invention belongs to the field of water resource purification, and particularly relates to preparation and application of a solar photo-thermal water evaporation material with ammonia resistance and salt resistance. The evaporation material comprises a porous substrate material, polyelectrolyte hydrogel loaded in the substrate material and a photo-thermal material, and the difunctional solar evaporation material with ammonia nitrogen interception and salt resistance is obtained by polymerizing different types of polyelectrolyte hydrogel and photo-thermal material on the inner and outer surfaces of the substrate in situ. The prepared polyelectrolyte hydrogel evaporation material not only can utilize solar photo-thermal efficient evaporation to produce water, but also can utilize charged groups of the polyelectrolyte hydrogel to generate Donnan repulsive interaction on ammonia nitrogen and salt ions, has ammonia nitrogen interception and salt resistance functions, and is suitable for purifying seawater and brackish water polluted by ammonia nitrogen.

The invention provides a system and a method for concentrating an ammonium chloride solution and co-producing fresh water. The system comprises a fresh water system, a concentrated water system and a water storage system, the fresh water system comprises a sea fresh water system and a brackish water system which are arranged in sequence, the concentrated water system comprises a primary concentration system and a secondary concentration system which are arranged in sequence, and the concentrated water system is connected with the fresh water system. The water storage system comprises a raw water tank, a fresh water tank and a concentrated water tank, the raw water tank is connected with the fresh water system or the concentrated water system, the fresh water tank is connected with the brackish water system, and the concentrated water tank is connected with the concentrated water system. The system and the method disclosed by the invention have the advantages of low energy consumption, no wastewater discharge and the like, and the ammonium chloride concentrated solution of which the TDS is greater than or equal to 170000 mg / L and the fresh water of which the TDS is less than or equal to 300 mg / L can be obtained.

The invention discloses an intelligent monitoring method and system for the durability of mass concrete in a salt-fresh water area, and the method comprises the steps: carrying out the field analysis of a salt-fresh water mass concrete monitoring project, and dividing a salt-fresh water monitoring area into a plurality of monitoring nodes; according to the specific conditions of different salt-fresh water mass concrete monitoring projects, monitoring is carried out at each monitoring node through a sensor and an unmanned aerial vehicle; analyzing the sensor historical data set of each monitoring node through a priority level division algorithm, dividing monitoring priority level types, and generating a monitoring priority level list corresponding to each monitoring node; performing feature extraction and training on the unmanned aerial vehicle historical data set of each monitoring node through a DenseNet-MLP network model, wherein the trained model is used for durability risk monitoring of each monitoring point; through deep learning model monitoring, the monitoring node priority list is introduced for monitoring management and control, concrete durability intelligent monitoring is realized, and the concrete durability risk monitoring precision in the salt and fresh water area is improved.

The utility model discloses a greenhouse salt water desalination system capable of realizing all-day operation, and belongs to the technical field of brackish water desalination and greenhouse planting. The system comprises an adjustable shutter arranged at an inlet of the greenhouse, a first wet curtain, a humidifying device, a condenser, a dehumidification dry curtain, a multi-stage heat storage water tank, a cold water tank and a fresh water tank, the first wet curtain, the humidifying device, the condenser and the dehumidification dry curtain are sequentially arranged in the greenhouse, and the multi-stage heat storage water tank, the cold water tank and the fresh water tank are arranged outside the greenhouse. The multi-stage heat storage water tank comprises a first-stage water tank, a second-stage water tank, a third-stage water tank and a fourth-stage water tank, the system realizes day-and-night operation of the brackish water greenhouse desalination system, and provides suitable environmental conditions for night growth of crops in the greenhouse. According to the outdoor temperature, condensed and dehumidified air is selectively and directly fed into a crop area in the greenhouse or returns to a first wet curtain inlet on the west side of the greenhouse to be mixed with fresh air, day and night operation of the system in summer and spring and autumn is achieved, and the growth cycle of crops is shortened by additionally arranging a light supplementing lamp at night.

To provide a stainless steel with superior pitting resistance in natural fresh water and brackish water environments where the natural potential repeatedly fluctuates between a noble potential (high potential) and a negative potential (low potential).SOLUTION: A stainless steel comprises, in mass%, C: over 0.018 and 0.30% or less, Si: 0.01 to 4.00%, Mn: 0.01 to 3.00%, P: 0.001 to 0.05%, S: 0.0001 to 0.01%, Cr: 9 to 23%, Ni: 0.001% or more and less than 2.0%, Cu: 0.001 to 1.5%, Mo: 0.001 to 1.5%, Sn: 0.001 to 0.300%, Al: over 0.03 and 4.00% or less, N: 0.001 to 0.100%, and O: 0.0001 to 0.01%, and further comprises, in mass%, one or two or more selected from Zr: 0.001 to 0.1%, V: 0.001 to 0.2%, W: 0.001 to 0.1%, Ta: 0.001 to 0.1%, and Hf: 0.001 to 0.1%.SELECTED DRAWING: None

The application discloses a method for monitoring and controlling corrosion environment of an underwater concrete structure in a brackish water area, and the method comprises the following steps: laying a monitoring system, monitoring the concentration of chloride ions, analyzing data of the distribution of the concentration of chloride ions, dividing the area according to the concentration of chloride ions, adjusting an impressed current, and giving a warning of the corrosion environment; the brackish water area is divided into a constant saltwater area, a constant freshwater area and a brackish water interface change area by continuously collecting data of the concentration of chloride ions and constructing a concentration field and a gradient field model, so that the risk degree of the corrosion environment can be directly reflected, and the cathodic protection parameters can be dynamically adjusted according to the real-time corrected chloride ion concentration field model, thereby realizing the intelligent monitoring, early warning and control of the corrosion environment of the underwater concrete structure in the brackish water area.

The invention discloses a salt and fresh water mixing irrigation device and method, and belongs to the technical field of agricultural instruments.The salt and fresh water mixing irrigation device comprises a pedestal, a mounting seat is fixedly connected to the upper surface of the pedestal, a connecting pump is fixedly connected to the mounting seat, and an input port and an output port of the connecting pump are connected with a middle pipe and a drainage pipe correspondingly. A swing rod, a first floating plate, teeth, a first gear and a control valve are adopted, when the fresh water level is high and the salt water level is low, the device can automatically reduce the inflow amount of fresh water and increase the mixing proportion of salt water, and vice versa, and the automatic adjusting mechanism ensures that under the condition that the water source condition fluctuates, the salt water can be continuously mixed. The device can automatically adjust the proportion of fresh water and saline water, the appropriate salinity concentration of irrigation water is kept, and no electric drive or manual intervention is needed. The system has the remarkable advantages that the system has the characteristics of automation and passive adjustment, so that the intelligence and efficiency of the irrigation system are improved, and the operation cost and the maintenance requirement are reduced.

The invention discloses a concrete proportion optimization method and device for a salt-fresh water intersection area. The method comprises the following steps: determining an aggregate corner distribution condition based on a first morphological parameter of single-particle-size broken stone within a preset particle size range in a typical estuary environment; determining durability parameters of the concrete test piece prepared from the broken stones with the single particle size; calculating a gravel aggregate concrete chlorine salt erosion distribution rule based on the parameters; calculating a round aggregate concrete chlorine salt erosion distribution rule; determining the influence degree of the aggregate corner effect on the concrete chlorine salt erosion rule based on the circular aggregate concrete chlorine salt erosion distribution rule, the chlorine salt concentration time-varying rule in the indoor environment and the gravel aggregate concrete chlorine salt erosion distribution rule; and optimizing the initial concrete proportion based on the influence degree. According to the method, the aggregate corner effect, the aggregate form and the chlorine salt concentration rule of the indoor and salt-fresh water intersection area serve as reference factors for optimizing the concrete proportion, and the durability of the concrete is guaranteed.

The application discloses a kind of high-activity mysis of macrobrachium rosenbergii screening method, belong to aquaculture technical field.The method includes: pre-treatment of immersion washing, using 100 mesh nylon net to catch I stage mysis, stirring treatment in the first immersion washing container containing 100ppm formaldehyde and 6 ‰ brackish water;First light source induction screening, using 580-595nm, 1500-2000lux LED light source induction above second immersion washing container, and high-activity I stage larvae that float up are collected in batches;Disinfection treatment, after soaking with 20-30ppm povidone iodine, rinse;Again light source induction screening, after the larvae are developed into II stage after constant temperature cultivation at 28-30 DEG C for 24 hours, again light source induction is carried out and high-activity II stage larvae that float up are collected in batches;Finally, concentrated cultivation is carried out.The application realizes the high-efficiency, standardization sorting of high-activity mysis by the combination of specific wavelength light source induction and twice screening before and after key development period, and optimizes immersion washing, disinfection and cultivation parameters, significantly improves the quality of seedling and the survival rate of seedling.

A direct impure water electrolysis (DIWE) approach generates green hydrogen in a modified proton-exchange membrane pure water electrolyzer (PEM-PWE), that avoids fouling, corrosion, deactivation, and side reactions normally caused by the ions in impure or saline waters. Conventional electrolyzers require ultrapure deionized (DI) water as feed because: 1) the proton-exchange membrane (PEM) and electrocatalysts are readily poisoned by the anions, e.g., chloride, and cations, e.g., sodium, calcium, and magnesium that are present in seawater or brackish water; and 2) the chloride anions readily form chlorine at the PEM-electrolyzer anode, which is toxic and corrosive. This adds substantially to the cost and complexity of the electrolyzer plant due to the water treatment plant needed for producing ultrapure DI water. The tolerance of impure water as described herein avoids reverse osmosis and deionization requirements steps which is beneficial for use in semi-arid regions with a paucity of fresh water.

The utility model discloses a kind of silica-containing wastewater recycling system, including the first sedimentation tank, primary CTUF silicon removal pool, primary RO water treatment system, secondary RO water treatment system, second sedimentation tank, secondary CTUF silicon removal pool, tertiary RO water treatment system, MVR system connected in sequence;Primary RO water treatment system is equipped with brackish water film, secondary RO water treatment system is equipped with seawater desalination film, and STRO film is equipped in tertiary RO water treatment system;Primary CTUF silicon removal pool, secondary CTUF silicon removal pool are equipped with roll type ultrafiltration membrane in both;The MVR system is used to evaporate concentration to the concentrated water discharged by tertiary RO water treatment system, and primary RO water treatment system, secondary RO water treatment system, tertiary RO water treatment system, MVR system are also connected with recycling water tank.The utility model is treated to wastewater by multistage precipitation, CTUF silicon removal pool, RO system, effectively removes higher concentration of silicon in wastewater, realizes wastewater recycling.

The application discloses a membrane-free liquid flow battery desalination device and method based on gravity stratification. The device comprises an upper-layer reduction reaction chamber, a middle-layer desalination chamber and a lower-layer oxidation reaction chamber. A stable three-layer liquid area is formed by using the density difference and the oil-water insolubility to replace the ion exchange membrane with the oil-water interface. The lower layer is an anode electrolyte with a density greater than water, the upper layer is a cathode electrolyte with a density less than water, and the middle layer is brine to be desalinated. After a voltage is applied, the oxidation-reduction reaction drives the migration of cations to the upper layer and the migration of anions to the lower layer, thereby realizing efficient desalination of brine. The application is membrane-free, low-cost, high-efficiency and stable in operation, and is suitable for scenes such as seawater desalination, brackish water desalination and high-salt wastewater treatment.

A direct impure water electrolysis (DIWE) approach generates green hydrogen in a modified proton-exchange membrane pure water electrolyzer (PEM-PWE), that avoids fouling, corrosion, deactivation, and side reactions normally caused by the ions in impure or saline waters. Conventional electrolyzers require ultrapure deionized (DI) water as feed because: 1) the proton-exchange membrane (PEM) and electrocatalysts are readily poisoned by the anions, e.g., chloride, and cations, e.g., sodium, calcium, and magnesium that are present in seawater or brackish water; and 2) the chloride anions readily form chlorine at the PEM-electrolyzer anode, which is toxic and corrosive. This adds substantially to the cost and complexity of the electrolyzer plant due to the water treatment plant needed for producing ultrapure DI water. The tolerance of impure water as described herein avoids reverse osmosis and deionization requirements steps which is beneficial for use in semi-arid regions with a paucity of fresh water.

The invention relates to the technical field of brackish water desalination, and discloses a brackish water desalination system and method.The system comprises a primary water treatment device, a secondary water treatment device, a freezing pond, a tertiary water treatment device and a quaternary water treatment device, the secondary water treatment device is connected with the primary water treatment device, the secondary water treatment device is suitable for separating tail water, the freezing pool is connected with the secondary water treatment device, the tertiary water treatment device is connected with the freezing pool, and the quaternary water treatment device is connected with the tertiary water treatment device. The tail water is sequentially subjected to multi-stage separation and purification of the second-stage water treatment device, the freezing pool, the third-stage water treatment device and the fourth-stage water treatment device, salt and alkali in the tail water can be separated out, tail water treatment is achieved, the final product only comprises salt, alkali and water, and the tail water treatment device has the advantages of being simple in structure and good in tail water treatment effect.

The invention relates to the field of monitoring and early warning, in particular to a concrete member erosion damage early warning method influenced by multiple factors in a salt and fresh water area. Comprising the following steps: collecting environmental parameters of a concrete member in a salt-fresh water intersection area through a sensor network, constructing a corrosion data matrix, extracting a disturbance factor characteristic spectrum by adopting a tensor column block decomposition algorithm, and constructing a corrosion evolution trajectory model based on a heterogeneous graph neural network. A dynamic Bayesian network and Monte Carlo simulation are combined to predict a multi-stage corrosion risk, short-term, medium-term and long-term early warning indexes are generated, finally, graded alarm and protection strategy generation are realized through a fuzzy logic mechanism, and intelligent sensing, modeling and prediction of a corrosion process are realized. According to the method, intelligent sensing, modeling and prediction of the erosion process of the concrete member are realized, and the timeliness, accuracy and interpretability of erosion early warning of the concrete member are remarkably improved.

A novel process for treatment of low quality or brackish water that allows increased recovery of high quality water, recovers commodity minerals and reduces the volume of water and mass of solids that are disposed from the process.

The invention discloses a carbon material with a through hole structure and a preparation method and application thereof, the preparation method comprises the following steps: S1, selecting a plurality of aquatic plant stalks with the moisture content of 10% or above, and then compressing the plurality of stalks under 5-50MPa to obtain compressed stalks; s2, the compressed stalks obtained in the step S1 are carbonized at the temperature of 600-800 DEG C to obtain carbonized stalks, and then the whole surfaces of the carbonized stalks are subjected to hydrophilic modification treatment to obtain the carbon material. Through combination of compression, carbonization and hydrophilic modification treatment, the integrity of a plant original through hole structure is reserved to the maximum extent, the pore size is optimized, the capillary effect is enhanced so as to efficiently complete water evaporation, and the evaporation efficiency of the carbon material prepared by the preparation method can reach 4.8 kg / (m.h). And seawater, brackish water, high-fluorine water, heavy metal organic pollution wastewater and eutrophic water can be efficiently treated.

The application discloses a distributed brackish water resource utilization system, comprising: a water taking device, wherein the water takers of the water taking device are distributed in different water body areas and / or different areas of the same water body; a water treatment device integrated in a movable transfer equipment and connected with each water taking device through a pipeline; the water treatment device adjusts water treatment parameters based on the water inlet salinity and the target water outlet salinity; wherein the target water outlet salinity is lower than the salt tolerance threshold of the target irrigation crops, and the difference between the two is maintained within a set range; the water treatment device is also used for outputting the treated water to the target irrigation area with the target irrigation crops, or connecting with a drip irrigation system arranged in the target irrigation area; and a control device is in communication connection with the water treatment device and used for adjusting the water treatment parameters of the water treatment device. The distributed brackish water resource can be efficiently and flexibly utilized.

A three-compartment electrochemical desalination system, and process of using same, is described, wherein a feed including brackish water or seawater can be introduced and fresh water can be produced. The electrochemical desalination system can be coupled to a carbon dioxide-capturing apparatus, which can scrub carbon dioxide from any air source, and an acid-base neutralizer, which can release the scrubbed carbon dioxide as a pure gas stream. The overall process thus results in the simultaneous separation of CO2 from an air source (i.e., carbon capture) and the production of fresh water from brine (i.e., desalination).

The utility model relates to the technical field of water circulation conveying equipment, and discloses a light salt brine circulation conveying device capable of reducing pipeline salty mud sediment, which comprises a conveying groove, tracks are respectively and fixedly arranged on the front side and the rear side of an inner cavity of the conveying groove, magnets with opposite magnetic poles are sequentially laid in the tracks, and electromagnetic sliding blocks are movably connected to the tracks. A cleaning plate is fixedly installed between the two electromagnetic sliding blocks and located over the bottom of an inner cavity of the conveying groove, the left portion of the inner cavity of the conveying groove is fixedly sleeved with a water inlet pipe, the middle of the water inlet pipe is fixedly sleeved with a pump, the bottom of the inner cavity of the conveying groove is fixedly sleeved with a blow-off pipe, and the middle of the blow-off pipe is fixedly sleeved with a valve. The electromagnetic sliding block slides on the rail, so that the cleaning plate is driven to scrape sediments at the bottom of the inner cavity of the conveying groove, blockage caused by accumulation of a large amount of salty mud is avoided, corrosion of the salty mud to the device is reduced, stable operation of the device is maintained, and the device keeps good working efficiency.

The embodiment of the invention provides a comprehensive treatment system for saline-alkali soil, and relates to the technical field of agriculture, and the comprehensive treatment system comprises a water source collection system for collecting rainwater and shallow brackish water; the water source treatment and storage system is used for carrying out purification and desalination treatment on the rainwater and the shallow brackish water collected by the water source collection system, and storing the treated fresh water in a storage pool; the intelligent irrigation system is used for irrigating the saline-alkali soil by using the fresh water stored in the storage pool when detecting that the pore water conductivity of the saline-alkali soil exceeds a preset threshold value, and washing salt accumulated on the surface layer of the saline-alkali soil by using salt washing mixed water; the salt washing mixed water is mixed water of rainwater collected by the water source collecting system and shallow brackish water. By applying the embodiment of the invention, the vicious circle problem of'water shortage-salt accumulation-low yield 'in the saline-alkali soil can be overcome, and the ecology of the saline-alkali soil is improved.