One or more embodiments provide method and device for treating various type of fluids.

The direct solar desalination system with enhanced desalination has a main chamber having a slanted transparent top and vertical sidewalls. Saltwater is fed to the top of a series of plates, with the top plate and every other plate slanting into the chamber, while the intervening plates slant back toward the chamber wall. The lower edge of the plates that are slanted into the chamber have a plurality of copper channels or wires extending between the plate's edge and the opposite chamber wall. Saltwater that does not flow down the channels/wires drips down to the next plate and so forth, and any remaining saltwater is collected at the bottom of the chamber. The channels/wires are coated with a photothermal layer to enhance evaporation. The fresh water condenses on the bottom surface of the slanted top, flows down the surface, and is collected at the bottom of the shortest sidewall.

A system and method for collecting and purifying rainwater. The system includes a humidifier including a heat exchanger for preheating collected rainwater. The preheated water is output to a heater. The heater heats the water to between about 80 degrees C. and about 100 degrees C. The humidifier also includes a nozzle coupled to an outlet of the heater. The nozzle injects water vapor into the humidifier. The humidifier also includes a fan capable of circulating the water vapor in an inner volume of the humidifier. The water vapor condenses on an outer surface of the heat exchanger. The system also includes a collector for collecting the condensed potable water from the outer surface of the heat exchanger and a delivery system for delivering the potable water.

Systems and methods for removing a contaminant from a liquid are generally described. The liquid (e.g., water) containing the contaminant may be flowed across a semipermeable membrane (e.g., via forward osmosis) that is not permeable to the contaminant in order to remove the contaminant from the liquid. A concentration gradient across the semipermeable membrane may be provided and maintained by electrolysis of the liquid and can drive forward osmosis of the liquid through the semipermeable membrane.

A liquid desalination, distillation, disinfection, purification, or concentration system by repeatedly re-using thermal energy is provided. Thermal heat source can be solar, fossil fuel, or low grade heat discharged from industrial systems. Multiple thermally insulated and isolated stages of vaporization-condensation chambers can be connected to enhance production yield. Vapor is generated by direct heating of liquid and flash evaporation. Vapor generated is condensed in condenser cooled by intake liquid. Counter circulating intake liquid will be heated by released latent heat from vapor. Externally provided thermal energy will accumulate and be re-used in the system. Vaporization and condensation process will be continuously re-cycled to enhance production yield. The system can be configured to support flexible deployment in various configurations and in different locations, including direct floating installation on water surface.

A plasma liquid generating device includes a plasma generating module, a driving circuit, an adjust-controlling module and a mixing structure. The driving circuit is coupled with the plasma generating module and configured to drive the plasma generating module to generate first type plasma particles and second type plasma particles. The adjust-controlling module is coupled with the driving circuit and configured to control the driving circuit to adjust a proportion of the first type plasma particles and the second type plasma particles generated by the plasma generating module. The mixing structure connects with the plasma generating module and configured to mix the first type plasma particles, the second type plasma particles and a liquid so as to produce a plasma liquid.

A hydro-thermal exchange unit (HTEU) for desalinating feed water in accordance with a humidification-dehumidification includes feed water, fresh water and gas conduit circuits for transporting feed water, fresh water, and gas, respectively. The unit also includes an evaporator through which a portion of the feed water conduit and the gas conduit pass. The evaporator causes evaporation of a portion of the feed water to produce vapor that is transported through the gas conduit. The unit also includes a condenser through which a portion of the gas conduit and the fresh water conduit pass. The condenser has input and output ports for coupling the gas and fresh water conduit circuits. The condenser extracts moisture from the vapor transported therethrough by the gas conduit. The extracted moisture is discharged through the fresh water conduit. The unit also includes a heat exchanger through which a portion of the fresh water conduit and the feed water conduit pass to thereby extract residual heat from the fresh water such that the residual heat heats the feed water.

Embodiments of the invention include an elongate chamber. A UV source includes a semiconductor device, the semiconductor device including an active layer disposed between an n-type region and a p-type region. The active layer emits radiation having a peak wavelength in a UV range. The semiconductor device is positioned on a wall of the elongate chamber. An inner surface of the elongate chamber is reflective.

A secure automated water treatment trailer and method of inserting chemical in a pipeline, the trailer having a frame with at least one axle and a tongue, a base, a plurality of connected walls, a weather proof top engaging each of the plurality of connected walls opposite the base forming an enclosure, a pair of locking doors, a plurality of discharge ports, a plurality of suction ports, a charging port, a skid, a plurality of a controller in communication with each of the pumps and a network, a plurality of pressure gauges, a generator, a plurality of valves, and a plurality of back pressure valves. The secure automated water treatment trailer automatically processes multiple fluids simultaneously into the pipeline. Each fluid has fluid characteristics and a specific gravity.

A method of chemical extraction from an aqueous solution includes receiving an aqueous solution including dissolved inorganic carbon. The method also includes increasing a pH of a first portion of the aqueous solution to form a basic solution. The basic solution is then combined with a second portion of the aqueous solution to precipitate calcium salts. The calcium salts are then collected.