A water container for purifying water. The water container includes an opening configured to receive water, a container body arranged to enclose the water and a water purifying unit configured to purify the water. The water purifying unit includes an at least partially transparent plate, which includes a coating of metal-oxide nanoparticles on a first side facing the container body, wherein the first side is configured to be in contact with the water, and an ultraviolet light module configured to radiate towards a second side of the at least partially transparent plate such that light from the ultraviolet light module at least partially passes through the at least partially transparent plate. Also, a method for purifying water within a water container.

A mobile wastewater treatment system wherein a mobile carrier has mounted thereon a wastewater treatment plant. The wastewater treatment plant has a flow equalization tank, an aeration tank, a clarifying tank, a disinfection stage, and a pumping tank. The mobile carrier can be a trailer, a skid, a shipping container, or the like.

A ventilation ring for a UV water sanitizer unit that allows for adequate ventilation of heat generated by electronic components while sequestering those electronic components from water. The ring can also be made of a transparent or translucent material to allow a user to detect whether a UV lamp within the housing is operating. An improved nut for affixing a quartz tube within such a unit and improved design for draining the unit are also disclosed.

A radiation source assembly comprises a source base, a UV transparent sleeve, and a UV lamp. The source base comprises a sealed electrical connection interface and an opposing sealed sleeve interface. The sealed electrical connection interface comprises a electrical contacts and the sealed sleeve interface comprise a radial sealing element, an outer collar, and a compression ring. The UV transparent sleeve is engaged with the sleeve interface such that the radial sealing element of the sealed sleeve interface is disposed between the UV transparent sleeve and the outer collar of the source base, and the compression ring is positioned over the UV transparent sleeve and engaged with the source base to compress the radial sealing element onto the UV transparent sleeve and the outer collar. The UV lamp is disposed within the UV transparent sleeve and electrically coupled to the electrical contacts of the electrical connection interface.

A fluid sterilization apparatus according to an embodiment includes a tubular cover; a tubular portion provided inside the cover; a supply head provided at one end of the tubular portion; a discharge head provided at the other end of the tubular portion; at least one light-emitting element provided in at least one of the supply head and the discharge head and allowed to irradiate an inside of the tubular portion with ultraviolet rays; and a temperature control unit capable of controlling a temperature of a space between the cover and the tubular portion.

A power generating and water purifying system. The system includes a closed loop power generator, a closed loop heat exchanger, and a closed loop water purifier. Hot brine water vapor travels from a reactor to a turbine, which generates electricity. The hot brine water vapor is then cooled by the closed loop heat exchanger and travels back to the reactor. The electricity powers generators. The electricity further powers an ammonia pump and a coolant compressor of the closed loop heat exchanger. Dirty water enters through a water inlet and is chilled by the closed loop heat exchanger. The water is then directed to a hot water accumulator, in which the water is heated by the closed loop heat exchanger. The water is vaporized by a hot plate and a UV light source. The distilled water is then cooled in a cooling tower and delivered to water tower as purified water.

A water-harvesting system can operate with a material that can take up and release water with minimum energy requirements and powered by low-grade energy sources, such as sunlight, in order to potentially allow its deployment into households, especially those located in sunny regions. A water-harvesting method and system can include vapor adsorption using a porous metal-organic framework. In certain embodiments, the porous metal-organic framework can include metal-organic framework in ambient air with low relative humidity, typical of the levels found in most dry regions of the world.

Disclosed is a sterilization apparatus including: a semiconductor UV (ultraviolet) light emitting diode; and a case including an upper section with an internal space and an entrance opening, a bottom face opposite to the entrance opening, and a lateral face connecting the bottom face and the upper section.

Methods and systems for treating brackish desalination brine for the recovery of fresh water are disclosed. The method includes treating a source of brackish desalination brine with an ultraviolet-driven persulfate photolysis oxidation pre-treatment; treating the source of brackish desalination brine treated with the ultraviolet-driven persulfate photolysis oxidation pre-treatment to a chemical demineralization process; treating the source of brackish desalination brine treated with the ultraviolet-driven persulfate photolysis oxidation pre-treatment and with the chemical demineralization process to a microfiltration process; and treating the source of brackish desalination brine treated to the ultraviolet-driven persulfate photolysis oxidation pre-treatment, the chemical demineralization process, and the microfiltration process to a reverse osmosis treatment.

A composite water purification apparatus and method thereof are provided. The composite water purification apparatus includes a container, a sacrificial anode, a photocatalyst anode and a cathode. The container is employed for receiving liquid including water and gas. The photocatalyst anode includes a photocatalyst for conducting a photocatalytic reaction. The cathode is electrolyzed with the sacrificial anode and the photocatalyst anode. The cathode, the sacrificial anode, and the photocatalyst anode are immersed in the container to contact the liquid. The present invention enhances the purity of the water, while prolonging the service life of the sacrificial anode.