Provided is a water recovery system and a water recovery method whereby, in water recovery using a reverse osmosis membrane from water to be treated containing organic matter, it is possible to also suppress slime contamination on the secondary side of the reverse osmosis membrane. A water recovery system includes: a reverse osmosis membrane treatment device which separates water to be treated containing organic matter into permeated water and concentrated water with a reverse osmosis membrane; iodine-based oxidizing agent adding piping which adds an iodine-based oxidizing agent to the water to be treated; and permeated water piping as a supply means for supplying the permeated water as water to be treated in a water utilization system.

Provided is a disinfectant against Legionella, including an iron salt as an active ingredient. Examples of the iron salt include ferrous salts such as iron (II) sulfate (ferrous sulfate), and ferric salts such as ammonium iron (III) sulfate (ferric ammonium sulfate). Provided is a method for treating water, including bringing target water into a state in which the target water contains an iron salt or an iron ion, thereby suppressing or inhibiting proliferation of Legionella existing in the target water. The present invention can sterilize and disinfect Legionella existing in, for example, bathtub water and air-conditioning cooling tower water, with high safety and sense of security in a simple and easy manner.

An antimicrobial composition comprising lithocholic acid, zinc pyrithione, cinnamaldehyde and a matrix forming compound. The composition is particularly suitable for treatment of microbial contamination and the formation of biofilms.

A method for using a portable antimicrobial treatment system is provided. The method comprises: (i) providing water to a dilution reservoir, wherein a first flow controller controls a rate of flow of the water between a water supply and the dilution reservoir, (ii) providing a high ion concentrate to the dilution reservoir, wherein a dosing pump controls a flow rate of the ion concentrate between the metallic ion cartridge and the dilution reservoir; (iii) combining the water and the high ion concentrate into a diluted solution: (iv) providing the diluted solution to at least one application system, wherein a second flow controller control a rate of flow of the diluted solution between the dilution reservoir and the at least one application system; and (v) controlling, by an electronics control module, the first flow controller, the dosing pump, and the second flow controller.

A biocide delivery system comprising a feed tank in communication with a biocide source containing a biocide; said biocide source adapted to receive water from said feed tank and controllably releases biocide into water received from said feed tank; and a product tank in communication with said biocide source and adapted to receive water from said biocide source.

A water treatment dispensing apparatus has a container for holding water from a water supply and a water disinfectant cartridge located within the container. A housing attached to the container and connected to the cartridge directs water from the cartridge to a remote location, such as a dental instrument. An air pressure device supplies water under pressure to the container to force water to flow through the cartridge and to the remote location.

A multi-stage floatation dispenser for carrying a ballast, which may be a non-water consumable dispersant and at least one water consumable dispersant wherein the weight of the water consumable dispersant decreases as the water consumable dispersant is consumed with the weight of water consumable dispersant and the non-water consumable coordinated with the flotation capacity of a flotation dispenser to provide for either a two stage or a three stage dispensing mode.

A device (1) for distributing mineralized water, said device comprising: an inlet (3), for loading water from an external source (100); a distillation unit (2), connected to the inlet (3) and configured to provide a distillation of an amount of water at least partially through heating, wherein said distillation unit (2) in turn comprises, or is operatively connected to, at least an heater (4) configured for providing heat in an amount sufficient to heat the amount of water at least up to a boiling temperature; a water distributor (5) configured for transferring a predetermined amount of distilled water (D) extracted from the distillation unit (2), to a removable container (10), the water distributor (5) being provided with an outlet nozzle or aperture (6) configured to face in use on said container (10); a mineralization unit (7) interposed between the distillation unit (2) and the outlet nozzle or aperture (6), said mineralization unit (7) being configured for accessing the inner cavity of a disposable capsule (20), containing a mineralized fluid solution or powder (M) in said cavity, for extracting at least part of said mineralized fluid solution or powder (M) from the capsule (20) and/or being configured for emptying the capsule (20) from the mineralized fluid solution or powder (M), and transferring at least part of the mineralized fluid solution or powder (M) from the capsule (20) to the water distributor (5); the device, optionally through the water distributor (5), being configured to mix the mineralized fluid solution or powder (M) with the predetermined amount of distilled water (D) transferred by the water distributor (5) to the removable container (10).

A method and apparatus for delivering sanitized drinking water to a poultry or other animal husbandry facility with water supplied from either a potable or non-potable source. In the case of a non-potable water source, ozone and antimicrobial copper or copper alloy are employed as primary and secondary sanitizing agents to eliminate chemical and biological drinking water contaminants. Ozone gas is generated onsite and serves as the primary sanitation agent prior to distribution of water to nipple drinker conduits within the facility. In the case of a potable water source, water is delivered directly to the drinking water distribution system. In either case, at least one conduit is filled with a woven mesh of antimicrobial copper to perform as a passive sanitation agent to inhibit microbial propagation and prevent development of biofilm within a nipple drinker system during periods of low flow and high temperatures. In the case of non-potable water source, as animals mature and consume more water, increasing concentrations of residual ozone clean the copper/copper alloy mesh surface and sanitize exposed nipple drinker actuator pins.

A thin-film composite polyamide reverse osmosis membrane with anti-bacterial and anti-biofouling effects and a preparation method thereof are disclosed. The preparation method includes: dissolving a highly water-stable metal organic framework CuBTTri in an n-hexane solution containing trimesoyl chloride by ultrasonic wave, immersing a polyethersulfone ultrafiltration membrane in an aqueous solution of m-phenylene diamine and taking out, and then immersing the ultrafiltration membrane in the trimesoyl chloride-n-hexane solution containing the aforementioned metal organic framework for reaction and modification, so as to obtain the thin-film composite polyamide reverse osmosis membrane. The resulting composite reverse osmosis membrane integrated with the anti-bacterial metal organic framework CuBTTri has a high reverse osmosis membrane permeability and possesses greatly improved and persistent anti-bacterial and anti-biofouling properties. The preparation method is simple and conducive to promotion, and has mild conditions.