A water heating and treatment system includes a water heater operatively coupled to a water heater controller, a hot water outflow line from the water heater, and a cold water supply line to supply water to the water heater. The cold water supply line includes at least one of an anti-scale device operatively coupled to an anti-scale device controller, and at least one sanitation device operatively coupled to a sanitation device controller. The mixing station is operatively coupled to a mixing station controller. The mixing station supplies heated water to at least a first temperature zone at a first hot water temperature. Controllers of the water heater controller, the anti-scale device controller, the sanitation device controller and the mixing station controller are co-located at a front of a single enclosure behind an openable door, the controllers operatively coupled to a supervisory controller.

A cerium oxide nanoparticle is produced by mixing a solution of an aromatic heterocyclic compound having no substituent or at least one substituent selected from the group consisting of a methyl group, an ethyl group, an amino group, an aminomethyl group, a monomethylamino group, a dimethylamino group, and a cyano group and containing 2 to 8 carbon atoms and 1 to 4 nitrogen atoms in a ring structure of the aromatic heterocyclic compound, with a solution containing a cerium (III) ion or with a cerium (III) salt, followed by addition of an oxidant.

A water purifier includes a raw water flow path into which raw water is introduced, a clean water flow path connected to the raw water flow path and having a water discharge nozzle disposed at an end, a filter device disposed in the clean water flow path, and to which a filter is installable to filter the raw water, a drain flow path branched off from the clean water flow path between the filter and the water discharge nozzle and connected to a drain port to drain water in the clean water flow path to outside, a drain valve configured to open or close the drain flow path, and a controller configured to determine a remaining life of the filter on a point in time at which the filter has been replaced and control the drain valve to perform a cleaning operation based on the remaining life of the filter.

Disclosed is an ultraviolet light disinfection apparatus mounted on a water pipe that is connected to a massage pool. The ultraviolet light disinfection apparatus comprises: a housing mounted on the water pipe and in closed connection with the water pipe; a PCB disposed inside the housing and provided with a UVC-LED light source and a wire, the wire protruding from the housing to connect to the power source; an ultraviolet light-transmitting body disposed on the housing, such that ultraviolet light at UVC wavelength range produced by the UVC-LED light source can enter into water body inside the water pipe through the ultraviolet-transmitting body. The present invention can disinfect the water body inside the water pipe. Also provided are a control box and a massage pool.

A trivalent doped cerium oxide composition is beneficial to aid in the removal of biological contaminants, such as bacteria, viruses, fungi, protozoa (e.g., amoebae), yeast and algae. These trivalent doped cerium oxide compositions can be used to remove these biological contaminants from fluids, including air and water, and from solid surfaces. The compositions also include a support material. Also described are methods of using compositions containing these trivalent doped cerium oxide compositions to remove biological contaminants.

A liquid treatment apparatus includes a water pump and a plasma jet generating device. A liquid inlet of the water pump is immersed in a liquid. A liquid outlet of the water pump is configured to eject the liquid from the liquid inlet out of the water pump without artificial bubbles in the liquid. A gas inlet of the plasma jet generating device is configured to be located out of the liquid. A pair of electrodes of the plasma jet generating device is configured to generate plasma jet by the gas from the gas inlet. The plasma jet outlet is configured to be immersed in the liquid and in proximity to the liquid outlet of the water pump so that the gas is automatically entrained into the gas inlet of the plasma jet generating device when the liquid is ejected out from the liquid outlet.

A biocide-generating device including a housing having an inlet and an outlet. The biocide-generating device additionally including a strainer basket that mounts within an interior of the housing including parallel electrode plates positioned within an interior of the strainer basket. The biocide generating device additionally including a protective dielectric sleeve in which the electrode plates are received. The protective dielectric sleeve is positioned between the electrode plates and the strainer basket.

A system for recovering fat, oil and grease (FOG) from wastewater has multiple annular flotation zones in a concentric configuration surrounding a central column to create progressively increasing surface areas for FOG and solid particles flotation, and thereby enhance FOG recovery and removal. Each flotation zone is equipped with an independent pressurized micro air and ozone bubbles distribution system. A controlled amount of ozone can be injected into the wastewater along with recirculated effluent and micro-size air bubbles. Upon the release of pressurized air-ozone-water mixture, micro-size bubbles are generated and distributed in each flotation zone to effectively float up FOG and solid particles in the wastewater stream.

A system for creating an oxidation reduction potential (ORP) in water employs a plurality of ozone supply units housed in separate enclosures. The ozone supply units feed into a manifold that contains a plurality of fluid paths and has one or more ozone intake ports. The ozone intake ports are fluidically coupled to one or more ozone output ports of each ozone supply unit. The manifold includes a plurality of flow switches configured to transmit control signals to one or more controllers of each ozone supply unit in response to sensing a flow of water through the fluid paths in order to cause the ozone supply units to generate ozone. The manifold also includes a plurality of fluid mixers that are fluidically coupled to the ozone intake ports and configured to introduce the ozone generated by the ozone supply units into the water flowing through the fluid paths.

A method of forming and fluid treatment system includes a vessel that is defined by a body having an inlet constructed to be connected to a fluid source and an outlet that is constructed to be connected to a discharge passage defined by a direction of a fluid flow directed through the body. The body is preferably three-dimensionally (3D) printed as a unitary body and from a filament material to define the entirety of the body including the inlet and the outlet. The vessel is preferably formed of an antimicrobial or other materials configured to manipulate the composition of the fluid flow directed therethrough and via direct contact of the fluid flow with the interior spaces of the body of the vessel.