Disclosed are a system and methods for producing lithium hydroxide directly from natural brine by an electrochemical approach. In one example version of the system, an electrochemical cell operates in two states. In one state, lithium cations (Li.sup.+) intercalate into a first electrode from the brine, and sodium cations (Na.sup.+) deintercalate from a second electrode into the brine. In another state, lithium cations deintercalate from the first electrode into a dilute lithium hydroxide (LiOH) solution, and sodium cations intercalate to the second electrode from a concentrated sodium hydroxide (NaOH) solution. Hydroxide anions (OH.sup.−) transport through an anion exchange membrane to combine with lithium cations (Li.sup.+) to form LiOH, continuously increasing its concentration.

A near-zero maintenance integrated purification device for drinking water supply of villages and towns and a method for treating source water using this device are provided to solve the multi-pollution problems caused by microorganisms, turbidity, iron, manganese, taste and odor, and organic matter in the drinking water sources of villages and towns. The device includes a small-spacing folding plate speed sink regulating water tank, a small diameter tube reactor, a granular active carbon (GAC) slow-speed filter tank, a gravity-driven ultrafiltration membrane tank and an ipsilateral U-turn corridor clean water tank. The near-zero maintenance integrated purification device is applicable to different types of water sources (e.g., groundwater, lake water, reservoir water, spring water, snowmelt water, cellar water and rain water, etc.), and could efficiently remove kinds of pollutants, improving the biological and chemical safety of drinking water.

A direct air capture system for use in a body of water that has waves with wave motion. The system includes at least one module exposed to the waves. The relative motion between the module and the waves to draws air into the module. The system removes carbon dioxide from the air using a moisture swing absorbent to remove the carbon dioxide from the air. The removed carbon dioxide can be used for various purposes.

This disclosure is related to systems and methods for water treatment, storage and customization, and more particularly, to systems and related methods for water production, sanitation, adjustment, maintenance, storage and dispensing of potable water to a user. The systems and methods described herein can provide several advantages including providing consistent high-quality water at point-of-use locations, thereby avoiding inconveniences of transport, unpredictable or wasteful supply chains and/or alleviate water needs at remote locations. Furthermore, the systems and methods described herein can offer a seamless digital consumer experience with high accuracy reporting of water production, storage, quality and personalization for the user.

A system and apparatus for treating and disposing of produced water in conjunction with gas turbine exhaust gas, thereby avoiding problems associated with injecting produced water back into subsurface strata. The system is installed at or near the wellhead where produced water being treated is at a higher temperatures. Produced water is treated with ozone injection in a scrubber with heat applied through introduction of gas turbine exhaust gas. A wet scrubber unit with scrubber packing is used to clean emissions. A produced water pump is used to circulate produced water, and pump produced water through spray nozzles in the scrubber unit for use as the wet scrubbing agent. As produced water evaporates, evaporated salts and solids are continuously removed from the evaporator/scrubber unit by appropriate means, such as an auger system. The evaporated salts and solids are then treated via chemical stabilization in a mixing system with chemical reagents to prevent the residual form from being hazardous. The residual material is then stored and disposed of properly.

Methods, systems, and apparatus, relate to a method for carbon capture from sea water. A first source of sea water into a reverse osmosis chamber. Reverse osmosis is performed on the sea water to produce fresh water and brine. The brine is provided to an electrolyzer. A current is passed through the brine and fresh water, thereby producing a hydroxide solution in a cathode chamber of the electrolyzer. The hydroxide solution is collected and placed into a contacting chamber and new sea water introduced. Precipitates are produced comprising at least calcium carbonate and magnesium carbonate.

An improved bio-electrochemical wastewater treatment process and system (1) is disclosed. An electrode assembly (4) is defined by interconnecting a set of electrode modules (5). Each electrode module (5) has a first electrode of an anode-cathode pair coated with electrogenic microbes adapted to generate electrons via the consumption of organic matter in wastewater. An electrode module (5) has a second electrode of the anode-cathode pair, and a body, supporting and separating the first and second electrodes. Each electrode module (5) also comprises an interface for physically connecting the module with at least one other of the set.

A seawater distillation system for distilling seawater and brine and removing salt. The seawater distillation system includes an apparatus having at least a vessel, a separation assembly, and at least one mist eliminator. The vessel may be adapted to hold a volume of seawater comprising a volume of salt, wherein vessel is one of externally heated and internally heated to evaporate the volume of seawater to a volume of steam and to precipitate the volume of salt. The separation assembly may be operably engaged with the vessel, wherein the separation assembly is configured to separate the volume of salt from the volume of seawater inside of the vessel. The at least one mist eliminator may be operably engaged with the vessel and positioned vertically above the separation assembly, wherein the at least one mist eliminator is configured to eliminate water droplets and salt from the volume of steam.

A water treatment device comprising a clear container with lid surrounded by a solar reflector, and an insert in the form of a thin sheet or mesh permanently coated with titanium dioxide as a water sanitizing catalyst. The container is filled with non-potable water, covered with the lid, and placed in direct sunlight. Direct and reflected sunlight enters the water through the clear container and lid, where the sunlight's ultraviolet (UV) radiation and increased solar thermal heat disinfect the water. Further, the catalyst on the insert reacts with dissolved oxygen in the water to produce reactive oxygen species. These reactive species react with and decompose organic compounds in the water, and kill or inactivate pathogens. In addition, the reactive oxygen species further react with the water itself to produce additional free radical species, which also react with and decompose organic compounds and kill or inactivate pathogens.

A barrage with a function of collecting floating garbage on a water surface is provided. It includes a first dam body as a main body of the barrage provided with multiple built-in low water level drainage channels and high water level drainage channels, a second dam body provided with multiple notches for converging floating garbage on the water surface, a garbage collecting and storing equipment arranged between the first dam body and the second dam body and a solar power generating equipment. The garbage collecting and storing equipment maintains running of the garbage conveyor belt by utilizing electric energy provided by the solar power generating equipment, thereby collecting garbage in a garbage pool beside the barrage. It not only has conventional functions of the barrage, but also greatly saves cost of manually salvaging garbage and avoids water pollution caused by accumulation of garbage on the river surface.