Perfluorinated and polyfluorinated compounds in an effluent stream are destroyed by means of electro-oxidation. Although electro-oxidation can be used to directly treat effluent, a more efficient use is to pre-concentrate applicable pollutants with filters or sorbents. Concentrated perfluorinated and polyfluorinated compounds are removed from the filter or sorbent with a regenerant solution and treated by electro-oxidation. A current density of 0.5 mA/cm.sup.2 or 1 mA/cm.sup.2 effectively reduces the level of perfluorinated contaminants within 1-3 hr. using a titanium electrode. This allows both the regenerant and filter or sorbent to be reused and greatly reduces the amount of material that must be treated as hazardous waste.

Ozone generating machine (OGM) for generating ozone in a ship, comprising: an ozone generator with at least two electrodes separated by an ozonizing gap and at least a gas inlet for receiving a feed gas containing dioxygen, and a gas outlet for exhausting gas comprising ozone to an ozone circuit of the ship, a main liquid cooling circuit (CWP, CWT), with at least a cooling portion in the ozone generator, to be connected with a cooling circuit of a ship, a liquid-liquid heat exchanger (LLHEX) connected with the main liquid cooling circuit (CWP, CWT), and an electrical closed cabinet (ECB) comprising an electric current converter (ECV),
characterized in that the ozone generating machine (OGM) further comprises a closed loop cooling liquid circuit (CLC) comprising a converter liquid cooling portion (CECV) arranged to cool the electric current converter (ECV) and connected with the liquid-liquid heat exchanger (LLHEX).

A contaminant-sequestering coating includes a network of hydrolyzed silane compounds. The hydrolyzed silane compounds include a hydrophilic polar head region, a hydrophobic linker, and an anchor region including a silicon atom. The network of hydrolyzed silane compounds is devoid or substantially devoid of fluorine atoms. Methods of destroying one or more perfluoroalkyl and/or polyfluoroalkyl (PFAS) compounds present in a contaminant-containing liquid are also provided.

A system for electrochemically enhanced water filtration is provided. The system includes: a chamber plug-flow electrochemical cell; a first cathode and anode pair disposed in the cell; and a second cathode and anode pair disposed in the cell. The first and the second pair are collectively operative to apply a 2D electric field in at least one of a horizontal direction and a vertical direction with respect to the chamber plug-flow electrochemical cell.

A system for treating a source of water contaminated with PFAS is disclosed. The system includes a PFAS separation stage having an inlet fluidly connectable to the source of water contaminated with PFAS, a diluate outlet, and a concentrate outlet and a PFAS elimination stage positioned downstream of the PFAS separation stage and having an inlet fluidly connected to an outlet of the PFAS separation stage, the elimination of the PFAS occurring onsite with respect to the source of water contaminated with PFAS, with the system maintaining an elimination rate of PFAS greater than about 99%. A method of treating water contaminated with PFAS is also disclosed. The method includes introducing contaminated water from a source of water contaminated with a first concentration of PFAS to an inlet of a

PFAS separation stage, treating the contaminated water in the PFAS separation stage to produce a product water substantially free of PFAS and a PFAS concentrate having a second PFAS concentration greater than the first PFAS concentration, introducing the PFAS concentrate to an inlet of a PFAS elimination stage; and activating the PFAS elimination stage to eliminate the PFAS in the PFAS concentrate. A method of retrofitting a water treatment system as described herein is also disclosed. The method includes providing a PFAS elimination module as described herein and fluidly connecting the PFAS elimination module downstream of a PFAS separation stage.

A water treatment system is provided. The system includes a container holding a reactant liquid within the container. The system further includes an electrode capsule removably retained within the container and submerged in the reactant liquid. The electrode capsule operates to generate reactant gas by operating within the reactant liquid. The system includes a cap releasably coupled to an opening of the container. The cap includes a nozzle that allows flow of reactant gas out of the container to treat an amount of water.

The invention relates to a device consisting of a reactor facility for the electrolytic treatment, with relation to flow dynamics, of fluid or gaseous media or mixtures of the two. In the context of this invention, electrolytic treatment with relation to flow dynamics means the combination of the production of at least one rotating fluid eddy and the eversion of the eddy by means of electrolysis taking place in the reactor facility. The guided fluid eddy is efficiently treated, cleaned and disinfected by this combination in the reactor facility according to the invention. The invention further relates to a method for the electrolytic treatment, with relation to flow dynamics, of fluid media in the reactor facility according to the invention.

A water purifier includes a body part generating purified water, hot water, and sterilization water. The body part includes: a filter purifying water, a hot water module that defines a heating flow path through which the purified water passing through the filter passes and that heats the purified water passing through the heating flow path into hot water, an intermediate flow path connecting the filter to the hot water module, a sterilization water flow path having a first side branched from the intermediate flow path and a second side connected to a water outlet, a sterilization water module installed in the sterilization water flow path and electrolyzing water passing through the sterilization water flow path into sterilization water, a hot water flow path guiding the hot water passing through the hot water module toward a water discharge nozzle, and a controller controlling the hot water and sterilization modules.

A water treatment device includes: an electrode structure installed in a storage space in which water is stored or in a flow space in which water flows so as to cause an underwater plasma discharge; and a gas supply module for supplying a gas to the storage space or the flow space such that bubbles are supplied underwater, as a discharge gas, to the electrode structure, wherein the electrode structure includes: a first electrode; a second electrode disposed opposite the first electrode; and a dielectric member disposed in a space between the first electrode and the second electrode.

A composite that includes graphene and an interfacially-polymerized polyamide, where the composite is in the form of a self-supporting membrane having a graphene side opposite to a polyamide side, or the composite is in the form of a microparticle comprising a graphene core and a polyamide shell, a method of manufacture of the composites by interfacial polymerization and methods of use of the composite are described.