A method and a system for producing a change in a medium. The method places in a vicinity of the medium an energy modulation agent. The method applies an initiation energy to the medium. The initiation energy interacts with the energy modulation agent to directly or indirectly produce the change in the medium. The energy modulation agent has a normal predominant emission of radiation in a first wavelength range outside of a second wavelength range (WR2) known to produce the change, but under exposure to the applied initiation energy produces the change. The system includes an initiation energy source configured to apply an initiation energy to the medium to activate the energy modulation agent.

The invention discloses a photocatalytic reactor for the anaerobic photoreforming waste aqueous effluents and the production of hydrogen, comprising a flat panel with a shallow container (4) and a top transparent window (6); a bed (5) of photocatalyst material with a photoactive semiconductor and at least one co-catalyst; a flow region (8) through which a waste aqueous effluent flows and enters into contact with the photocatalyst material in the bed (5) under irradiation; and a sealing gasket (9) which isolates the panel from ambient air.

Methods and systems of PFAS destruction including recovery and recycling of reactants. The method may include combining water including PFAS with fresh reactants including photosensitizer, sulfite salt and base to form an initial treatment solution having a pH of about 10 or more, irradiating the initial treatment solution with UV light in a photoreactor to destroy a portion of the PFAS and form treatment effluent, passing the treatment effluent through an ion selective membrane, combining the reject solution with water including PFAS to form a subsequent treatment solution, irradiating the subsequent treatment solution with UV light in the photoreactor to destroy a portion of the PFAS and form a treatment effluent, and repeating the process to recycle the recovered reactants one or more additional times. After the recovered reactants are recycled multiple times, they may be purged.

A system and method including means for holding waste material including wastewater, contaminated liquid, animal waste, human waste or sludge; means for housing earthworms; means for transferring the wastewater from said means for holding wastewater to said means for housing earthworms; means for timing the transfer of the wastewater from said means for holding wastewater to said means for housing earthworms to allow earthworms in said earthworms housing means to process the waste water; means for removing suspended matter/debris and/or floating/sinkable particles present in the wastewater; means for draining the processed wastewater to said means for removing suspended matter/debris and/or floating/sinkable particles present in the wastewater; means for sterilizing the wastewater with UV light; and means for draining the processed and polished waste water to said means for sterilizing the wastewater with UV light.

Methods and systems of PFAS destruction including recovery and recycling of reactants. The method may include combining water including PFAS with fresh reactants including photosensitizer, sulfite salt and base to form an initial treatment solution having a pH of about 10 or more, irradiating the initial treatment solution with UV light in a photoreactor to destroy a portion of the PFAS and form treatment effluent, passing the treatment effluent through an ion selective membrane, combining the reject solution with water including PFAS to form a subsequent treatment solution, irradiating the subsequent treatment solution with UV light in the photoreactor to destroy a portion of the PFAS and form a treatment effluent, and repeating the process to recycle the recovered reactants one or more additional times. After the recovered reactants are recycled multiple times, they may be purged.

Methods and systems for treating wastewater for PFAS reduction including mixing wastewater including PFAS with an oxidizing species to form a treatment solution and exposing the treatment solution to UV light from a UV light source at 222 nm for an adequate time and at a sufficient intensity to destroy the PFAS. The oxidizing species may be a persulfate ion. The wastewater may include a polymeric PFAS, a perfluoroalkyl carboxylate, a partially fluorinated perfluoroalkyl carboxylate, a perfluoroalkyl alkoxide or a perfluoroalkyl alcohol, for example. The wastewater may be wastewater produced during semiconductor manufacturing.

The present disclosure relates to water treatment systems utilizing non-thermal plasma processes integrated with advanced oxidation processes for the rapid degradation and removal of per-and polyfluorinated compounds (PFAS) and other toxic organic contaminants. This approach addresses the chemical stability and mass-transfer limitations of toxic organic compounds including PFAS by generating reactive species at the gas-liquid interface and employing oxidative radicals in the bulk liquid. The solution enables thorough defluorination and minimizes harmful byproducts, with optional surfactant addition and gas injection to enhance transport and reaction efficiency. Principal uses include scalable and energy-efficient remediation of toxic organic compounds contaminated water in municipal, industrial, and environmental applications.

A portable liquid filtration device includes a portable housing, an inlet defined on the portable housing and oriented to receive liquid therethrough, an outlet defined on the portable housing and oriented to discharge liquid therethrough, and an ultraviolet (UV) chamber in downstream flow communication with the inlet. The UV chamber includes a UV lamp configured to irradiate the liquid with UV light. The device further includes a mounting assembly for coupling the UV chamber to the housing. The mounting device includes a set of rails coupled to the housing and defining a corresponding rail notch, and a clamp. The clamp includes a first grip arm at a first end of the clamp and a flange at a second end of the clamp. The first grip arm is shaped to secure the UV chamber to the clamp and the flange provides a friction fit between the clamp and the rails.