An ultrapure water production system to produce an ultrapure water, includes a pre-treatment unit 2; a primary pure water production unit 3; a secondary pure water production unit 4; a storage unit 5 provided to precede the pre-treatment unit 2 or between the pre-treatment unit 2 and the primary pure water production unit 3, the storage unit 5 being capable of storing raw water or treatable water; a recovery treatment unit 6 to remove impurities mixed in a used ultrapure water obtained after use of the ultrapure water and containing hydrogen peroxide with passing a part or the whole of the hydrogen peroxide therethrough, to make a recovered water; and a circulator 7 to circulate the recovered water obtained from the recovery treatment unit 6 to feed the recovered water back to the storage unit 5.

A composite material for use in water treatment. The composite material includes a porous matrix including a resin capable of retaining a catalyst and magnetic material therein, and includes a density regulating portion disposed therein. The catalyst is capable of facilitating a chemical reaction involving a contaminants in the water. The magnetic material and density regulating portion can be used to separate the composite material from treated water. Systems and methods of use involving passive water treatment, continuous water treatment, solar light exposure, UV light exposure, and electrochemical cells, employing photochemical, electrochemical, and photoelectrochemical reactions are described. Methods of manufacture are described.

Embodiments of the subject invention relate to a small modular self-contained surface plasma device for decontamination of air and surfaces within enclosed volumes. Embodiments of the subject invention relate to a method and apparatus using the technical process of dielectric barrier discharge (DBD) surface plasma generation from ambient atmosphere for decontamination of air and surfaces within enclosed volumes. The primary application mode is for preservation of perishable commodities within industrial shipping containers through reduction of surface spoilage organisms and destruction of evolved gaseous ethylene that causes premature ripening. Additional implementations include deployment for oxidation of surfaces and/or container atmospheres in applications to diminish or eradicate pesticides, toxins, chemical residues, and other natural or introduced contaminants. Other embodiments envisioned include incorporation of device capabilities and or ancillary modules for feedback input (e.g. ozone sensor(s) to maintain steady state levels, self-tuning circuitry to adjust operating frequency), communication (e.g. among modules, RFID data loggers, Wi-Fi output), and programing (e.g. user input of container volume, transit time, ozone level, etc.).

A method of extracting water from sludge, wherein the sludge includes a magnetic ballast, wherein the sludge is positioned on an interface. It includes applying a magnetic treatment to the magnetically-ballasted sludge to extract water from the sludge.

The invention relates to a method for decontaminating an aqueous liquid medium containing molecular micropollutants or a surface contaminated with micropollutants using nucleolipid compounds.

Disclosed is a process for enriching silicate content in drinking water that includes separating raw water via reverse osmosis into a permeate comprising demineralised raw water and a retentate comprising mineral enriched raw water. The permeate is mixed with a water glass solution comprising sodium silicate and/or potassium silicate. An ion exchange process is used to reduce the concentration of sodium and/or potassium ions in at least part of the mixture. At least part of the retentate is supplied to the mixture after reducing the concentration of sodium and/or potassium ions to provide a silicate-enriched drinking water. Also disclosed is an apparatus for producing a drinking water enriched with silicate. The apparatus includes a reverse osmosis unit, a mixing unit, an ion exchanger, and a feed unit for feeding at least part of the retentate to the mixture after reducing the concentration of sodium and/or potassium ions.

The invention relates to a method for removing polyfluorinated organic compounds from water by means of an adsorbent and to the regeneration of the latter. According to the invention, at least one zeolite is used as an adsorbent, which is brought into contact with the water and is then regenerated by wet-chemical oxidation, wherein the oxidation is carried out by means of UV irradiation and/or at a pH in the range from pH 2.5-7.5.

Decontamination of water using low-cost technology for municipal wastewater treatment for safe irrigation reuse is provided. More specifically, wastewater is decontaminated by coagulation/flocculation followed by biological filtration while incorporating, in several stages, wastes from other industries such as ceramic kiln dust and biochar. Ceramic kiln dust and alum are used in a coagulation/flocculation process which is then followed by biofiltration using a biochar material.

Embodiments of treating fluid comprising hydrocarbons, water, and polymer being produced from a hydrocarbon-bearing formation are provided. One embodiment comprises adding a concentration of a viscosity reducer to the fluid to degrade the polymer present in the fluid and adding a concentration of a neutralizer to the fluid to neutralize the viscosity reducer in the fluid. The viscosity reducer is buffered at a pH of 7 or less (e.g., at a pH of from 2 to 7, such as at a pH of from 3.5 to 7, or at a pH of from 5 to 7). The addition of the concentration of the viscosity reducer is in a sufficient quantity to allow for complete chemical degradation of the polymer prior to the addition of the concentration of the neutralizer in the fluid such that excess viscosity reducer is present in the fluid. The addition of the concentration of the neutralizer is sufficiently upstream of any surface fluid processing equipment to allow for complete neutralization of the excess viscosity reducer such that excess neutralizer is present in the fluid prior to the fluid reaching any of the surface fluid processing equipment.

A mobile sewage treatment and water reclamation system for rapid deployment to augment existing wastewater systems and/or provide interim service in lieu of permanent facilities, includes: (a) a denaturing stage wherein raw sewage is first ground into suspendable grit, its pH lowered to kill acid-sensitive bio-organisms and raised to kill base-sensitive bio-organisms, and then neutralized; (b) a clarifying stage employing an inverted-cone tank to circulate the solution after injection with chemicals to flocculate small particles for collection in a layer for siphoning off; and (c) a disposal stage wherein clarified water passes through media filters to remove remaining solids and odors, the effluent water being clean enough for irrigation, aquatic life and discharge into waterways; and wherein sterile sludge is pressed into semi-dry solids, then dried, crushed, powdered and bagged for use as high-nitrate biomass fertilizer or for fossil-fuel power co-generation applications.