123 results about "Brackish water" patented technology

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 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 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.

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 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.

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.

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.

The invention discloses a preparation method and application of an agricultural modified humic acid-polyferric compound fertilizer for realizing high salt water content, and belongs to the technical field of agricultural resources and environment. The method mainly aims at solving the problem of utilization of high-salinity water such as brackish water and seawater which cannot be used for farmland irrigation due to over-high salinity or salinity. The method mainly comprises the following steps: firstly, dissolving humic acid in a KOH solution, adjusting the pH value, and catalyzing by using laccase to prepare a high-activity modified humic acid solution; then, adding a polyferric compound (such as polyferric phosphate) into the solution, reacting and drying to obtain a modified humic acid-polyferric compound fertilizer; and finally, adding the solid fertilizer into high-salinity water (such as brackish water and seawater), stirring, standing and filtering to obtain liquid, namely the irrigation nutritive water, which can be directly used for agricultural application such as irrigation, water culture and the like, so that'desalination and detoxification 'and'nutrition' are completed in one step.

The invention belongs to the technical field of photo-thermal conversion and solar seawater desalination, and particularly relates to a flower-on-ball photo-thermal evaporation material, a preparation method of the flower-on-ball photo-thermal evaporation material and a photo-thermal evaporation device of a honeycomb-shaped hollow structure. The photothermal evaporation device of the honeycomb-shaped hollow structure comprises a base and an evaporation assembly fixed to the base, the evaporation assembly comprises an internal T-shaped evaporation body and an external cylindrical wrapping part, and the T-shaped evaporation body and / or the cylindrical wrapping part are / is made of photothermal evaporation materials. The whole device is made of photo-thermal evaporation materials and PVA-PAM composite aerogel, the upper portion of a T-shaped main body is a honeycomb-shaped disc evaporation layer, the lower portion of the T-shaped main body is a water supply column, an outer cylinder and the water supply column form a hollow cavity, and salt is discharged through a T-shaped path. The device optimizes heat management, improves the water evaporation rate and the long-term stability of seawater desalination through material and structure collaboration, and is suitable for solar seawater desalination and brackish water desalination.

The invention belongs to the technical field of iodine removal of light salt brine, and particularly relates to a method for removing high-valence iodine in ionic membrane caustic soda light salt brine. Comprising the following steps: (1) adding a pH regulator and sodium sulfite into light salt brine, regulating the pH to 1-3, stirring until the reaction is completed, and carrying out primary adsorption deiodination by adopting a composite adsorbent to obtain light salt brine 1; and (2) adding a pH regulator and hydrogen peroxide into the light salt brine 1, regulating the pH value to 1-2, stirring until the reaction is completed, and carrying out secondary adsorption by adopting a composite adsorbent to remove iodine, thereby obtaining the deiodinated light salt brine. According to the removal method disclosed by the invention, high-valence iodine such as periodate and iodate in the light salt brine is converted into low-valence iodine such as iodate and iodide ions by utilizing the reducibility of sodium sulfite and the oxidation-reduction property of hydrogen peroxide in the coexistence of iodide ions and iodate, and then is further converted into simple substance iodine, and the simple substance iodine is efficiently removed by utilizing a composite adsorbent; the process is simple, the cost is low, the removal rate is high, and the removal effect is good.

The application relates to a kind of unpowered brackish water desalination device, it includes transparent evaporation tank, water collecting pool, transparent evaporation tank bottom lays iron powder and carbon powder, the upper portion of transparent evaporation tank is provided with multiple layers of grid plate, each layer of grid plate is formed by multiple strip-shaped plates side by side, two adjacent strip-shaped plates are arranged at intervals, the interval between two adjacent strip-shaped plates in the same layer is evaporation channel, each strip-shaped plate is provided with groove along the length direction, black sponge is placed in the groove, a plurality of fixing holes are arranged in the groove bottom, one capillary tube is fixed in each fixing hole, the upper end of the capillary tube is communicated with the groove, and the lower end of the capillary tube is close to iron powder and carbon powder;Several water intercepting strips are arranged above the uppermost grid plate in an inclined manner, the water intercepting strips are arranged staggered in height, the lower part of the water intercepting strips is inserted into the water outlet hole, and the water outlet hole is a strip-shaped hole;The water inlet of transparent evaporation tank is arranged below the lowermost grid plate;Transparent evaporation tank is also provided with a vent hole.The application is used for treating brackish water.

A fire hazard due to Santa Ana winds is mitigated by causing the winds to flow through an evaporative barrier proximate an entrance to a canyon, thereby cooling, humidifying, and slowing the winds. Water applied to the barrier can be drawn by a pump from an underlying aquifer. Power for the pump can be provided by a windmill positioned in the path of the winds, and / or by solar panels. A mat containing seeds and / or seedlings and super absorbent polymer (SAP) can be positioned upwind or downwind of the evaporative barrier, and water can be applied to the mat, causing the winds to pass through the resulting vegetation, thereby further slowing and humidifying the winds. A thermally conductive network can cool the mat by conducting heat from the mat to the evaporative barrier. Brackish water can be directed to a desalination apparatus, and thence as fresh water to the mat.

The invention provides a low-salt-content brackish water concentration system and a low-salt-content brackish water concentration method. The low-salt-content brackish water concentration system comprises a fresh water tank, a concentrated water tank, a first water treatment device, a second water treatment device, an energy recovery device and a return pipeline, wherein an inlet of the second water treatment device is connected with a concentrated water outlet of the first water treatment device through a second pipeline; the pressure of concentrated water discharged from the concentrated water outlet of the second water treatment device is greater than that of concentrated water discharged from the concentrated water outlet of the first water treatment device; a high-pressure water outlet of the energy recovery device is connected with an inlet of the first water treatment device, and a high-pressure water inlet of the energy recovery device is connected with a concentrated water outlet of the second water treatment device through a fifth pipeline; an inlet of the return pipeline is communicated with a concentrated water outlet of the second water treatment device, and an outlet of the return pipeline is communicated with the fourth pipeline. Therefore, the low-salt-content brackish water concentration system disclosed by the invention is low in energy consumption and high in fresh water recovery rate.

The present application relates to the technical field of mixing equipment, and discloses a brackish water desalination mixing irrigation device, which comprises a mixing box body, a liquid discharge box body arranged on the mixing box body, a fresh water cavity and a salt water cavity formed in the liquid discharge box body, two communication pipes arranged between the mixing box body and the liquid discharge box body and respectively communicated with the fresh water cavity and the salt water cavity, and a liquid discharge component arranged on the liquid discharge box body and capable of intermittently discharging the liquid stored in the fresh water cavity and the salt water cavity, and capable of quantitatively discharging the liquid in the two cavities so that the two kinds of liquid are released in the mixing box body in a more suitable proportion, thereby facilitating subsequent mixing and stirring of the two kinds of liquid. After the brackish water is mixed with a certain proportion of fresh water, when the irrigation water quality reaches a suitable standard, the irrigation amount can be adjusted according to the soil and crop requirements, the crops can be irrigated, and the growth of the crops is facilitated.

This invention discloses a saline water desalination system combining a hemispherical solar distiller with underground soil condensation. The system comprises a saline water storage device 1, an evaporation device 2, a condensation device 3, and a freshwater collection device 4. The saline water storage device 1 provides the saline water source for the entire system. The evaporation device 2 utilizes saline water pumped by a water pump 11 for natural evaporation. A centrifugal fan 32 promptly transports the generated water vapor to the underground condensation device 3 via an insulated pipe 31, where it exchanges heat with the soil underground. Finally, the generated freshwater is collected in the freshwater collection device 4. This system eliminates the traditional method of collecting desalinated water where the evaporation and condensation processes occur in the same space. It proposes a method that physically isolates the evaporation and condensation processes of saline water under the influence of solar energy, solving the problem of a significant decrease in condensation efficiency as evaporation and condensation continue in the same space.

The present invention relates to a desalination device and method based on electrosorption and coupled reverse osmosis. The device comprises: two electrode plates, each of which is used to generate an electrostatic field based on the voltage applied by a power supply to adsorb or desorb anions and cations in raw water, thereby producing low-concentration freshwater or wastewater; the two electrode plates, each carrying opposite charges, are spaced relative to each other, forming a cavity with two open ends in between, one end of the cavity being a water outlet and the other end being a water inlet; a plurality of reverse osmosis membranes, disposed in the cavity between the two electrode plates, for separating anions and cations from water in the low-concentration freshwater to produce freshwater; or for separating anions and cations from water in wastewater under the action of an electrostatic field to produce brackish water; and a collection chamber, connected to the water outlet, for collecting freshwater. The present invention can reduce energy consumption while also reducing membrane fouling and extending the service life of the fouled membranes, thereby improving desalination efficiency and recovery rate.

The invention relates to the technical field of energy conservation and environmental protection, and particularly discloses a scale inhibition and dispersion agent for a reverse osmosis membrane and a preparation method and application of the scale inhibition and dispersion agent. The scale inhibitor for the reverse osmosis membrane, provided by the invention, is obtained by carrying out dehydration condensation reaction on polysuccinimide, carboxylated chitosan and sulfamic acid. The scale inhibition and dispersion agent is suitable for reverse osmosis treatment systems of various water qualities such as municipal wastewater, seawater, brackish water, surface water, underground water and industrial wastewater. Experiments show that the product has excellent scale inhibition performance, the scale inhibition rate can reach 97.4% or above, dirt deposition on the surface of the membrane can be remarkably inhibited, and the service life of the membrane is prolonged. Meanwhile, the preparation process is simple and convenient, the raw material cost is lower, the use is safe and efficient, the biodegradability is good, the influence on the environment is reduced while the stable operation of a reverse osmosis system is ensured, and the popularization and application prospects are good.

The utility model relates to a water purification vehicle which comprises a movable chassis and a square cabin, and a water taking device, a purification device, a water storage device, a water and poison detection device and a drainage device which are sequentially connected through pipelines are arranged in the square cabin; the purification equipment comprises a metal film filtering module, an activated carbon module, a reverse osmosis module and a boiler; a first path, a second path and a third path which are respectively used for purifying surface water, normal-temperature brackish water and low-temperature brackish water are arranged in the purification equipment, the first path comprises a metal film filtering module and an activated carbon module which are connected through a pipeline, and the second path comprises a metal film filtering module and a reverse osmosis module which are connected through a pipeline; the third path comprises a metal film filtering module, a boiler and a reverse osmosis module which are sequentially connected through a pipeline; according to the device, surface water or brackish water at normal temperature or low temperature can be classified and purified, purified water meeting the national standard drinking water requirement can be obtained, and the water use requirement of field operation personnel is met.