A swimming pool filter element capable of automatically dosing. The swimming pool filter element includes a folding filter element and a doser filter element. The folding filter element includes a filter membrane and end covers, the end covers each having an upper end cover and a lower end cover. A wrench cover is arranged at the upper end of the upper end cover. The doser filter element includes a doser end cover, a doser lining and a doser shell. The doser filter element is added into the folding filter element, so that a water flow needing to be filtered firstly passes through the filter membrane of the folding filter element, solid large-particle impurities are filtered out, then the water flow enters the doser filter element and makes contact with sterilization tablets placed in the doser filter element, the tablets are dissolved, and finally water with dissolved tablets is discharged into a swimming pool.

A method of treating water includes directing a stream of water towards a lateral side of a water treatment substance body contained within a holder. The water stream serves to abrade the water treatment substance body, thereby to dose the water with the water treatment substance. Dosed water is thus formed. The dosed water is allowed to pass through at least one opening in the holder.

A system for dispensing water treatment compositions into a pool, spa, or other body of water is disclosed, which system provides a visible cue that the water treatment is properly dispersing and also provides a visible cue when the desired amount of water treatment has been dispensed. The system comprises a dispenser and the water treatment composition contained within the body of the dispenser, which dispenser and which system provides a readily visual cue that when the water treatment dose has been fully, or in some cases mostly or partially dispersed. For example, the dispenser sinks when fully dosed and resurfaces when empty, and in particular embodiments the water treatment generates visible gas bubbles and/or a color stream as the treatment dissolves.

Tablets for treating and disinfecting water, particularly for water of swimming pools and spas comprising a halogenated derivative of isocyanuric acid together with a volatile additive, chemically incompatible with the latter, encapsulated in a microporous or mesoporous material which has a certain pore size, pore volume and a specific surface. The tablets are chemically stable, while maintaining the expected activity of both the halogenated derivative of isocyanuric acid and the additive.

A method and apparatus for treating a body of water to kill microorganisms by enhancing the concentration metal ions therein. The apparatus comprising a dispenser with a first housing having a water accessible compartment containing a source of 5,5-dimethylhydantoin for releasing the 5,5-dimethylhydantoin when contacted by the body of water and a second housing having a water accessible compartment containing an insoluble metal ion donor for releasing metal ions when contacted by the body of water containing the 5,5-dimethylhydantoin

A method of dissolving a soluble disinfectant in solid format in a stream of water flowing in flow path, to provide an aqueous disinfectant solution in the flow path, includes directing a stream of water along the flow path toward a disinfectant dissolution zone in a disinfectant dispensing device located in the flow path. In the disinfectant dissolution zone, soluble disinfectant in solid format is located. Water of the stream of water contacts the disinfectant in the dissolution zone and thus dissolves of the disinfectant, thereby forming a disinfectant solution in the flow path in the dispensing device. Prior to water of the stream of water contacting the disinfectant, in a flow modification zone that is in the flow path in the dispensing device at an effective distance upstream of the disinfectant dissolution zone, at constant volumetric flow rate of the stream of water, one or more flow characteristics of water of the stream of water are artificially modified, for modified impact of water of the stream of water onto the disinfectant, by means of a flow modifying component that is located in the flow modification zone.

A shower filter includes a water treatment gel composition containing 100 parts by weight of vitamin C or a vitamin C derivative, 100 parts by weight of salt, and 3 to 13 parts by weight of xanthan gum so that there are advantages of removing chlorine dissolved in service water and simultaneously providing natural minerals to skin to help skin care.

The invention relates to a water purification system and distillation unit. The water purification system (3) comprises an input section (31) for providing water (21), in particular tap water, to a distillation unit (1), and said distillation unit (1) for producing distilled water. Said distillation unit comprises an evaporation section (12) for evaporating said water (21) and producing steam (23), and a condensation section (14) for at least partly condensing said steam (23), producing distilled water. The system further comprises a first admixing unit (32), in particular a cartridge, which is arranged and configured in such a way that it is enabled for admixing compounds, in particular minerals, to said distilled water, producing enriched distilled water, and an output section (33) for dispensing said enriched distilled water. Said evaporation section (12) is provided by a heatable side (101) of a first Peltier effect device (10) and said condensation section (14) is provided by a coolable side (102) of said first Peltier effect device (10).

A retrofit assembly for a chlorinator has a cylindrical disk portion having a lower region for insertion into a cylindrical opening of a chlorinator cylinder, a groove for receipt of a first O-ring and a flange at the top to abut the cylindrical opening, and an upper cylindrical member attached to the lower region having exterior threads thereon, a central bore passing through the cylindrical disk portion for passage of chlorine tablets into the chlorinator cylinder, a cylindrical collar with threads for engagement with threads on the chlorinator cylinder, the collar configured to fit over the lower region of the cylindrical disk portion, and a cap having a cylindrical section with internal threads for engagement with the exterior threads of the upper cylindrical member to cover the central bore of the upper cylindrical member, wherein a recess formed in the cap has a bottom for receipt of a second O-ring.

A water purification process for treating water containing at least some organic contaminants, and including the steps of pre-treating the water for capturing organic contaminants from solution in a water stream, by passing the water into a spin up bowl to speed up the water stream, forcing the high speed stream through an annular flow passage located centrally of the spin up bowl passing the high velocity stream between a magnetic member and a magnetic ring, thereafter passing the water stream into an energy recovery bowl, directing the flow from the flow passage onto a zinc anode member; and thereafter passing the water stream along a grounded pipe, thereby causing the development of fine particles of calcium carbonates, and capturing the organic contaminants