16 results about "Water desalination" patented technology

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 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.

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 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.

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.

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.

The presently disclosed subject matter relates generally to the production of a desalinated, filtrated or other way treated water simultaneously with generation of renewal energy source, in particular hydrogen, using osmotic and / or gauge pressure driven filtration processes and systems. The co-generation of hydrogen from water produced during pressure driven water desalination / filtration processes, such as reverse osmosis, forward osmosis, pressure retarded osmosis or ultrafiltration. A small part of feed, raw saline solution and / or permeate involved in a desalination / filtration processes is subjected to electrolysis thereby splitting the water to produce hydrogen. This is achieved by the provision of novel RO type semi-permeable membranes and UF type membrane that incorporate electrodes within the membrane to allow splitting of the water via electrolysis.

A system capable of simultaneously purifying water and generating electricity includes one or more prime mover, a variable displacement hydraulic pump, a first variable displacement hydraulic motor hydraulically coupled to the variable displacement hydraulic pump, a second variable displacement hydraulic motor hydraulically coupled to the variable displacement hydraulic pump, and a controller having one or more processors adapted to execute software maintained in one or more non-transient memories, the controller adapted to control the pump, the first motor, and the second motor, wherein the first motor output shaft is adapted to be coupled to an electrical generator to thereby generate electricity, and wherein the second motor output shaft is adapted to be coupled to a water purification pump to draw unpure water from a feed supply and provide the unpure water to a water purification system to thereby generate permeated water and separated impurities.

Method and apparatus for water desalination combined with power generation, wherein a desalination system is used to desalinate brackish aquifer water and is operationally related to a power generation system, wherein said dual-purpose cogeneration facility captures the natural gas contained in the brackish aquifer water.

Film drum evaporator. The invention relates to the separation of liquid media by evaporation, applicable in liquid solution concentration and desalination plants. The evaporator comprises a cylindrical body with ends, a heated steam supply pipe, a secondary steam discharge pipe, and a condensate discharge pipe from the lower part of the body. The drum, partially filled with the solution to be evaporated, is mounted on bearing supports and equipped with a rotation drive. One pipe supplies the solution to be evaporated into the drum cavity, while another pipe discharges the concentrate from the bottom of the drum. A device located below the liquid level in the drum ensures continuous mechanical cleaning of salt deposits from the evaporation surface.To reduce metal consumption, the drum wall thickness is decreased by means of stiffening rings distributed along its entire length. Some of these rings serve as support bushings for a series of bearing supports, evenly distributing the load along the drum's length. This configuration increases drum productivity by reducing wall thickness while simultaneously increasing the drum's diameter and length with a limited number of bearing supports. The evaporator is designed for the separation of liquid media by evaporation in the nuclear, chemical, food, pharmaceutical, energy, oil, and gas industries, among others.

Water Desalination Apparatus

This invention provides a photothermal interface evaporation device for water desalination, comprising a water collection system and a water delivery system. The water collection system includes a freshwater collection chamber and an evaporation tank. The evaporation tank is equipped with a phase change photothermal module, a diversion channel, and a raw water evaporation chamber. The raw water evaporation chamber stores pre-filtered raw water and evaporates the interface area using heat transferred from the phase change photothermal module. A condenser is installed at the top of the evaporation tank, where evaporated water vapor condenses, nucleates, and grows on the cooling surface of the condenser. A thermoelectric conversion module is installed at the bottom of the evaporation tank, which converts the local residual heat energy generated during evaporation into electrical energy to power the condenser of the water collection system. This achieves active condensation, directional convergence, and efficient collection of water vapor, reducing external energy consumption and improving desalination efficiency and energy utilization.

A water desalinization apparatus for efficient water desalinization includes a first removable cover for daytime use and a second removable cover for nighttime use. The first removable cover allows sunlight and infrared rays to pass through the cover to heat saline water held in a fluid basin. The second removable cover is positioned on the fluid basin when the first removable cover is removed from the fluid basin to form the water vapor from the saline water. The second removable cover includes a first plate that acts as a cold body to convert the water vapor to fresh liquid water. A second plate is arranged between a freshwater collection conduit and the fluid basin. The second plate may have nonlinear apertures or two sub plates with misaligned apertures configured to pass the water vapor from the fluid basin to the first plate.

An apparatus for desalination of water is disclosed. The apparatus comprises a housing defined by a base portion, a wall structure extending upwardly from the base portion, and a cover enclosing the wall structure, collectively defining a chamber to receive and contain non-potable water. The housing is defined with a heat transfer surface and a condensation surface. At least one thermoelectric module is disposed in the housing and operatively coupled to a power source. The thermoelectric module comprises a first side and a second side. The first side is coupled to the heat transfer surface and is configured to generate heat for heating or boiling the non-potable water to induce vaporization and form water vapor. The second side is coupled to the condensation surface and is configured to cool the condensation surface to condense water vapor into potable water.