61 results about "Water desalination" patented technology

Disclosed herein are methods for producing electrodes comprising single-layer 1T′-transition metal dichalcogenide (TMD) nanosheets. The method includes filtering a suspension of single-layer 1T′-TMD nanosheets over a polymeric substrate to produce the electrode, wherein, the single-layer 1T′-TMD nanosheets of the electrode are no more than 1,000 nm in thickness; the electrode comprises at least 70% 1T′-phase; and the electrode has a calculated electrochemical active surface area (ECSA) that is about 10-fold higher than that of a control electrode, which comprises 2H-TMD nanosheets. Also disclosed herein are methods for deionizing a fluid. The method includes steps of discharging the fluid in an electrochemical capacitor at a constant voltage of no more than 0.5 V to deionize the fluid, wherein the electrochemical capacitor is characterized in having the electrode comprising single-layer 1T′-TMD nanosheets produced by the present method.

There is provided a method for controlling at least one capacitive deionization (CDI) cell used for water desalination. The method comprises subsequent to feeding the at least one CDI cell with water at an initial flow rate, obtaining a measurement of an actual output concentration of water exiting the at least one CDI cell, comparing the actual output concentration to a concentration setpoint, determining, based on the comparing, a change to be applied to the initial flow rate for adjusting the output concentration towards the concentration setpoint, and outputting at least one control signal comprising instructions to cause the change to be applied to the initial flow rate to obtain a modified flow rate and to cause the at least one CDI cell to be fed with water at the modified flow rate.

The present application pertains to systems and methods for desalination. In one embodiment the system employs a first storage reservoir configured to be near the surface of a body of water and configured to store a low density fluid. A second storage reservoir is configured to be located below the surface of the body of water. A desalination system is operably connected to the second reservoir. Desalinated water is produced by allowing desalination permeate to displace low density fluid in the second reservoir and transfer the low density fluid from the second reservoir to the first reservoir. Desalinated water is exported by transferring low density fluid from the first reservoir into the second reservoir to displace desalinated water from the second reservoir into a water export pipeline.

The application belongs to the technical field of polyamide composite membranes, and particularly relates to a modification method of a water treatment polyamide composite membrane. The method modifies the polyamide composite membrane by using active oxygen species generated by the reaction of complex metal ions and a peroxide aqueous solution, thereby improving the modification effect of the modification solution on the polyamide membrane. The method can improve the hydrophilicity of the membrane surface, regulate the pore size and structure of the polyamide separation layer of the membrane, break the mutual restriction of the water flux and desalination rate of the polyamide membrane, and simultaneously improve the water flux and desalination rate. The modification method can be carried out at room temperature, can modify the existing reverse osmosis membrane assembly, and can also be implanted into the existing reverse osmosis membrane production line to modify and improve the membrane sheet, and the prepared high-flux and high-salt rejection rate reverse osmosis membrane can be applied to the fields of seawater or brackish water desalination, power plant water desalination, household water purification, sewage reuse, industrial wastewater treatment and the like.

A Fresnel spot lens desalinization system includes a Fresnel spot lens (FSL) disposed above a heating element. The heating element has a collector plate and a rod portion; The FSL concentrates solar energy onto the collector plate. A condenser vessel is connected to the collector plate. The rod portion extends into the condenser vessel having a heat resistant exterior shell. The rod portion projects interiorly of the condenser vessel at a downward angle and includes a top portion that is connected to a flat head of the heating element. The flat head receives the solar energy generated from FSL The concentrated solar energy increases the temperature of the heating element inside the condenser vessel to vaporize the salt water to steam and transfer the steam into a condensing tube to condense the steam into pure water.

A sea water desalination process and plant wherein intake sea water is delivered to at least one reverse osmosis pass comprising at least one reverse osmosis membrane to produce permeate product water and brine; wherein at least a portion of the brine is delivered to at least one reactor 2 for the removal of carbonates-based chemical in the brine by precipitating calcium carbonate. The calcium carbonate is converted in a regenerator 10 to produce calcium hydroxide and carbon dioxide. This provides for a series of benefits in the overall cost efficiency and sustainability of the process / plant.

A water desalination device, comprising:a body having a lateral wall and defining a cavity for the desalination of water, wherein in said cavity are defined a desalination chamber and a condensation chamber, wherein the condensation chamber comprises a collection portion for desalinated water,a heater, configured to heat the water to desalinate in order to produce a steam,a cooler, configured to determine a condensation of a steam deriving from the heating of the water,whereinthe heater comprises a duct within which flows seawater at a first temperature (T1),the cooler comprises a duct within which flows seawater at a second temperature (T2),wherein said water desalination device is configured to maintain a pressure lower with respect to the atmospheric one within said cavity, and is operatively connected with a vacuum pump connected with said cavity,said water desalination device comprising a first supply device configured to supply seawater at said first temperature (T1) into the duct of the heater, and a second supply device configured to supply seawater at said second temperature (T2) into the duct of the cooler.

This provides a new technology that enables the recovery of high concentrations of CO2 from low concentrations of target gases. [Solution] The CO2 recovery system (1) includes a dehumidifying tower (10) and a CO2 absorption tower (20). Both the dehumidifying tower (10) and the CO2 absorption tower (20) include a configuration that cools the pipe structure (tower body 11 or vent pipe 24), which has an open upper end, from bottom to top, and this cooling causes the (dry) air to move from top to bottom within the pipe structure.

Disclosed is a water treatment apparatus using capacitive desalination. The water treatment apparatus comprises: a housing having an inlet and an outlet; a plurality of deionization units disposed in the housing; a plurality of dividers disposed between adjacent deionization units among the plurality of deionization units to partition the adjacent deionization units; and connection terminals disposed in the dividers and electrically connected to the adjacent deionization units to supply power.

The application provides a high-salinity water desalination device with a compressed air energy storage system, and belongs to the field of desalination and water treatment. The device comprises: a compressor unit for compressing external air to a high-pressure state; a heat storage and heat exchange system for heat exchange treatment of the high-pressure air; an air storage chamber for storing the high-pressure air after heat exchange treatment; a heat release and heat exchange system for preheating the high-pressure air; an expander unit for work using the preheated high-pressure air and for power generation of an engine; an evaporation tank for flash evaporation of hot water generated after heat exchange treatment of the high-pressure air and for steam generation; and a multi-stage evaporation device for high-salinity water desalination using steam as a heat source and for fresh water generation. The application can use the excess compression heat generated by the compressor unit as working steam of the multi-stage evaporation device, thereby improving the energy efficiency utilization rate of the compressor unit and reducing the cost of high-salinity water desalination of the multi-stage evaporation device.

Apparatus and methods for controlling a reverse osmosis system for water desalination to reduce energy consumption. The system has a controller configured to receive information from a sensor array and determine filtrate flow, filtrate salinity, and energy usage. Based on these determined parameters, the controller controls the feed water flow rate and the position of the condensate valve to meet predetermined filtrate flow and filtrate salinity criteria and reduce energy consumption.

A system is provided for the thermal separation of a process liquid using an immiscible liquid, in accordance with some embodiments. In some embodiments, the system comprises a precipitate extraction evaporator configured to receive the process liquid and immiscible liquid within an enclosed vessel. In some embodiments, the process liquid is injected into the immiscible liquid and undergoes phase change to form steam. In some embodiments, the steam is condensed by a condenser positioned above the immiscible liquid. In some embodiments, the condensed steam is collected and discharged as fresh water. In some embodiments, precipitate formed in the immiscible liquid is directed to a precipitate collection area. In some embodiments, a conveyor is configured to remove the precipitate from the enclosed vessel. In some embodiments, the system is integrated with one or more desalination and / or heat recovery subsystems.

An apparatus, system and method to purify water is disclosed. Pumps and energy recovery devices for taking water from an intake, filtering the water to remove solid contaminates before running the filtered water through the reverse osmosis system to the discharge device and purified water lines are described. The system may comprise a control panel that controls the plurality of filters, plurality of reverse osmosis membranes, purified water line and effluent discharge device, to achieve favorable water purification. A method that utilizes the apparatus and / or system is described herein.

The application discloses a system and method for eliminating fog clusters and generating electric energy by air water extraction, and belongs to the technical field of environment and resource recycling. The system and method are used for solving the technical problems of high energy consumption, single function attribute and failure to effectively convert the gravity potential energy of fog drops, which leads to continuous power supply for remote road section monitoring equipment. The system comprises a detachable fog removal assembly, a water collecting tank and a Kelvin water drop power generation module. The application deeply couples the air water extraction assembly and the Kelvin water drop power generation module, relies on the gravity of the fog drops to complete the polarization, induction and positive feedback accumulation of electric charge, and does not need external power supply or complex power supply pipelines, so that the effect of green, low-cost and sustainable power supply for remote road section monitoring equipment is achieved.

The application relates to the technical field of saline-alkali soil improvement equipment, in particular to a saline-alkali water desalination treatment desalination equipment for saline-alkali soil treatment, which comprises a well pipe, a water pumping module, an impeller device and a plurality of filter core modules; the well pipe is embedded in saline-alkali soil, the top end of the well pipe protrudes from the ground of the saline-alkali soil, a plurality of leakage holes are arranged on the circumferential side wall of the well pipe, and the circumferential side wall surface of the well pipe is covered with filter cloth; the water pumping module is arranged on the well pipe and used for pumping saline-alkali water contained in the soil around the well pipe; the impeller device is connected with the water pumping module and used for driving the water pumping module to operate; the plurality of filter core modules are arranged in the interlayer cavities of a plurality of blades of the impeller device respectively and used for filtering the saline-alkali water. The device pumps the saline-alkali water in the soil into the blades through the water pumping device, and filters the saline-alkali water by using the filter core modules, so that the purpose of separating the salt from the soil is achieved, the defect that the soil improvement effect is poor in the prior art is solved, and the soil improvement effect of the device is enhanced.

A multiple-effect multi-train desalination (MEMTD) device, based on phase change, which includes at least two trains of n evaporator-condenser effects, wherein each train of effects has at least one latent-heat exchanger in each of the evaporator-condenser effects; at least one sensible-heat exchanger between every two train effects, in which sensible heat is exchanged between the brine flow released from the last evaporator-condenser effect of the previous train of effects and incoming water flow provided as feed water to the first evaporator-condenser effect of the following train; and a last condenser that condenses, at least partly, evaporated vapor from the last evaporator-condenser effect of the last train of evaporator-condenser effects.

The invention belongs to the technical field of functional materials and electrochemical water treatment, and discloses bi-crosslinked carbon aerogel as well as a preparation method and application thereof. The preparation method comprises the following steps: mixing a water-soluble polymer solution with a solution containing metal cations, performing crosslinking to form gel, performing curing and crosslinking treatment to form bi-crosslinked gel, performing freeze drying to obtain bi-crosslinked aerogel, soaking the bi-crosslinked aerogel in a solution of an organic ligand, and performing carbonization treatment to obtain the bi-crosslinked carbon aerogel. The prepared bi-crosslinked carbon aerogel material is uniform in morphology, internal structures are mutually communicated, migration and diffusion of calcium ions in a carbon layer are facilitated, the highest specific surface area reaches 1195.12 m < 2 > / g, the calcium ion adsorption capacity is higher than 7.5 mg / g, the specific capacitance can reach 230 F / g, and the bi-crosslinked carbon aerogel material has high specific capacitance and excellent calcium ion adsorption performance, can be used for removing hard particles in water, and can be applied to the field of water treatment. The method has unique advantages in water desalination, enrichment of specific ions and removal of heavy metal ions and organic pollutants, and has a wide application prospect.

This invention provides a hybrid energy system based on tower solar power generation and proton exchange membrane fuel cell combined power generation, along with waste heat multi-effect distillation for saline-alkali water desalination, belonging to the field of hybrid power generation technology. The system includes: a tower solar power generation module, a proton exchange membrane fuel cell module, a power management module, and a waste heat-utilizing saline-alkali water desalination module. This invention combines tower solar power generation and proton exchange membrane fuel cell for power generation, efficiently recovering low-grade heat from the proton exchange membrane fuel cell power generation process for saline-alkali water preheating and efficiently recovering high-temperature steam heat generated during the tower solar power generation process for saline-alkali water desalination. This promotes the upgrading of solar power plants in areas with abundant solar resources but predominantly saline-alkali groundwater, as well as on outlying islands, and also meets the local freshwater supply needs for production and daily life, avoiding resource waste while further improving power generation efficiency, making it more energy-efficient and environmentally friendly.

The invention provides a hybrid energy system based on tower type solar energy and solid oxygen fuel cell composite power generation and waste heat multi-effect distillation saline-alkaline water desalination, and relates to the technical field of composite power generation. The hybrid energy system comprises a tower type solar power generation module, a solid oxygen fuel cell module, a regenerative turbine power generation module and a saline-alkaline water desalination module utilizing waste heat. Tower type solar energy and a solid oxygen fuel cell are combined for power generation, and high-grade waste heat generated in the solid oxygen fuel cell power generation process and the tower type solar energy power generation process is efficiently recycled to drive a turbine generator to generate power and desalinate saline and alkaline water. The system promotes the upgrading of solar power plants in regions with rich solar resources and underground water mainly including saline-alkali water and away from islands, meets the fresh water supply required by local production and life, avoids resource waste, further improves the power generation efficiency, and is more energy-saving and environment-friendly.

The invention discloses a passive heat management and water desalination cooperation method and system based on a membrane distillation technology, and relates to the technical field of water desalination. The system comprises a salt solution module, a membrane distillation module and a fresh water collection module which are arranged in sequence. The membrane distillation module comprises a saline solution interface plate, a porous membrane and a condensation plate which are arranged in sequence; the salt solution module comprises a salt solution channel and a heating electronic device arranged on the salt solution channel; one end of the salt solution channel is connected with one end of the salt solution interface plate, and the other end of the salt solution channel is connected with the other end of the salt solution interface plate; the fresh water collecting module comprises a fluid conveying pipeline, and a first air pump and a water storage tank which are arranged on the fluid conveying pipeline; one end of the fluid transportation pipeline is connected with one end of the condensation plate, and the other end of the fluid transportation pipeline is connected with the other end of the condensation plate. Energy storage heat management is achieved for a heating electronic device, the utilization rate of low-temperature heat energy is increased, and desalted fresh water is obtained in combination with membrane distillation treatment.

The present application belongs to the technical field of water desalination, and particularly relates to a kind of integrated all-weather water collection device of bionic aloe evaporation capture and manufacturing method.The water collection device includes a base and a plurality of bionic units arranged on the base, the bionic unit is a bionic aloe tree;The base is circular, the bionic unit is circumferentially distributed around the center of the base, and at least has two layers;The water collection device is prepared from a hydrogel material.The device base part can utilize the photothermal properties of hydrogel during the day, and evaporate seawater through sunlight;At night, the sharp end effect of the aloe form of the bionic unit can be used to capture fog, and collect water vapor in the air.The whole device can work all day, and is not subject to the difference between day and night, greatly improving the efficiency of fresh water collection.

The invention provides an ecological purification system based on nano-filtration multi-membrane and nano-microbubble coordinated regulation, which comprises an inferior water desalination unit and a water body micro-nano oxygenation unit, wherein the inferior water desalination unit adopts a stepped first-stage purification tank and a stepped second-stage purification tank, and filtration of a nano-filtration multi-membrane assembly is enhanced through a negative pressure environment and a gravity water head difference; the water body micro-nano oxygenation unit generates micro-nano bubbles through aeration of a Venturi tube, shearing of a multi-stage vane pump and secondary oxygen breaking of a vortex making tube, so that the oxygen mass transfer efficiency is improved; the intelligent control system takes an STM32 single-chip microcomputer as a core and is combined with a solar power supply module, a sensor monitoring module and an execution module to realize automatic cooperative operation. According to the system, the unit energy consumption of purified water is reduced, the oxygen mass transfer efficiency is improved, the nitrogen and phosphorus absorption rate is improved, beneficial minerals are selectively reserved, the treated water quality meets the farmland irrigation standard, the agricultural fresh water resource contradiction can be relieved, and soil secondary salinization and river and lake eutrophication can be prevented and controlled.

This application relates to a method and system for high-salinity wastewater desalination and decarbonization based on flue gas waste heat, belonging to the field of industrial wastewater treatment and carbon dioxide capture technology. The method includes: mixing an extractant with high-salinity wastewater, allowing water molecules to enter the extraction phase while salt remains in the aqueous phase, forming a mixed liquid; allowing the mixed liquid to stand and separate, obtaining an upper layer of freshwater-extractant mixture and a lower layer of high-salinity concentrate; heating the freshwater-extractant mixture using the waste heat of carbon-rich flue gas to separate the extractant from the freshwater, recovering the regenerated extractant and freshwater respectively; contacting the high-salinity concentrate with the cooled carbon-rich flue gas, causing the carbon dioxide in the carbon-rich flue gas to react with the calcium ions in the high-salinity concentrate to form calcium carbonate precipitate, thus achieving flue gas decarbonization.

The invention relates to the technical field of farmland tail water treatment, in particular to a farmland tail water treatment system and method. The farmland tail water collecting equipment collects initial tail water of the farmland in the preset area; the soil humidity monitoring equipment collects the current soil humidity of the farmland in the preset area; when the current soil humidity is smaller than a preset soil humidity threshold value, the intelligent terminal equipment controls the initial tail water to flow into farmland tail water desalting equipment, desalting treatment is conducted on the initial tail water, desalted tail water is obtained, and farmland in a preset area is irrigated based on the desalted tail water; and when the current soil humidity is greater than or equal to a preset soil humidity threshold value, the intelligent terminal equipment controls the initial tail water to flow into the farmland tail water pollution control equipment, performs pollution control treatment on the initial tail water to obtain pollution-controlled tail water, and discharges the pollution-controlled tail water into a drainage ditch to reduce water pollution. A'salt reduction-pollution control 'synchronization and'water resource-nutrient' dual-recovery system is constructed, multiple treatment targets are achieved, and the comprehensive utilization efficiency of saline-alkali land resources is improved.

The invention belongs to the technical field of clean power supply hydrogen production and water desalination, and provides a clean power supply hydrogen production coupling water desalination system and a power configuration method thereof, and the method comprises the steps: building a clean power supply priority distribution model; wherein the clean energy is preferentially provided for the hydrogen production device; based on the electricity purchase cost, a heat storage tank state optimization model is established; and jointly solving the clean power supply priority distribution model and the heat storage tank state optimization model to obtain the optimal power configuration of the clean power supply and the hydrogen production device. By optimizing the configuration proportion of the clean power supply and the hydrogen production power, the utilization of abandoned electricity and waste heat in hydrogen production by wind energy and solar energy is realized.

The invention discloses a circulating cleaning water desalting system and method for a firecracker factory. The system comprises a primary settling tank, a dechlorination tank and a secondary settling tank which are communicated in sequence. According to the method, a specific modified ultra-high lime aluminum method is adopted, the circulating cleaning wastewater of the firecracker factory is taken as a treatment object, lime milk and aluminum powder recycled from a sedimentation tank in the factory are added, and Ca < 2 + > and Al < 3 + > react with Cl <-> to form an insoluble calcium aluminum chloride layered compound Ca4Al2Cl2 (OH) 12 precipitate so as to realize dechlorination and synergistically remove impurity ions such as sulfate radicals and sulfite radicals. According to the method disclosed by the invention, the removal rate of Cl <-> can reach 93% or above under optimal conditions, and the removal rates of SO4 < 2->, SO3 < 2-> and heavy metal ions all reach 99% or above. The treatment cost of the method is lower than 5 yuan / ton, the generated precipitate can be used as a sludge dewatering regulator for resource utilization, and the method has the advantages of high efficiency, low cost and resource utilization.

The invention belongs to the technical field of light evaporation water desalination, and particularly relates to a moss carbonized film gel composite double-layer evaporator and a preparation method thereof.The moss carbonized film gel composite double-layer evaporator is prepared by freeze-drying and then carbonizing moss to obtain a moss carbonized film, placing the moss carbonized film on the upper surface of hydrogel, and standing until the hydrogel is completely solidified to obtain the moss carbonized film gel composite double-layer evaporator. The method comprises the following steps: firstly, preparing a moss carbonized film into gel, enabling the gel and the moss carbonized film to form a composite film with a firm structure, and then spraying a water repellent agent on the carbonized part to obtain the light evaporator with a different-plane structure. The light evaporator disclosed by the invention has excellent light capturing capability and photothermal conversion capability and relatively good salt resistance.

A system and method for water desalination using. The system uses ammonium bicarbonate as the draw solution to draw out freshwater through a forward osmosis (FO) membrane from an amount of saltwater or other contaminated water initially directed through one side of the FO membrane. The ammonium bicarbonate draws the desalinated water through the membrane of the FO membrane. Brine or other solutes are directed away. The combination of desalinated water and ammonium bicarbonate is directed through a hydrophobic membrane housing to recoup additional freshwater and remove a large amount of the ammonium bicarbonate. The remaining water is directed to a reverse osmosis membrane housing to remove any residual remaining ammonium bicarbonate. The fresh water can then be directed out for treatment and end use.

To provide a desalination system and a desalination method capable of efficiently performing desalination without requiring large energy other than light energy with a simple constitution compared with a conventional one.SOLUTION: The desalination system 1 includes a heat generation part 21 containing a photothermal conversion material which generates heat by absorbing near infrared rays S1. When the heating part 21 is irradiated with light S including at least near-infrared rays S1, the heating part 21 absorbs the near-infrared rays S1 to generate heat by photothermal conversion, the raw water 2 is heated by using the generated heat to evaporate water contained in the raw water 2, and the evaporated water 3 is condensed and recovered. The photothermal conversion material is preferably a composite material containing silver nanoparticles and layered titanium dioxide.SELECTED DRAWING: Figure 1

This invention belongs to the field of photo-evaporation for water desalination, specifically relating to a programmable composite carbon-based evaporator (Janus-Fe3O4-CPS) and its preparation method. It utilizes a woven, natural, flexible *Ophiopogon japonicus* as the water transport substrate, combined with Fe3O4 as the photothermal conversion layer. The naturally hierarchical porous structure within the *Ophiopogon japonicus*-derived carbon enables rapid water transport through strong capillary action, promoting salt cycling and inhibiting crystallization. Furthermore, the metal-organic coordination bonds formed between Fe3O4 and the conjugated nitrogen structure of the plant-derived carbon enhance the local surface plasmon resonance effect. The hydrophobic properties of the upper surface and the hydrophilic properties of the lower surface of the photo-evaporator together constitute a salt-resistant Janus structure. Based on this, the applicant has designed various evaporators with good performance using porous carbon derived from *Ophiopogon japonicus*, demonstrating excellent performance.