The invention relates to a method for removing a chemical substance from human excreta, such as faeces and urine, comprising the following steps of: providing a toilet for a person from whose excreta the chemical substance must be removed; releasably connecting a filtering device to the toilet, wherein the filtering device comprises at least one removable cartridge with a filter; transporting the excreta by means of a transport screw from the toilet toward the filter in the cartridge, wherein pressure is exerted on the excreta by means of a plunger; filtering the chemical substance out of the excreta in situ using the filtering device; periodically replacing the at least one cartridge; and processing the replaced cartridge. The invention also relates to a filtering device for application in this method, and a cartridge for use in such a filtering device.

The present invention discloses an electronic flush valve system for tankless water fixtures, comprising a valve housing and a replaceable flush valve module removably secured within the valve housing. The flush valve module is comprised of an independent, self-contained flush valve configured as a replaceable flush valve cartridge.

A water-saving device that addresses the problem of saving drinking water when using flush toilets, such as in households and in public facilities. The device has a hollow profile of a guiding part, into which a hollow inner profile with a collection container is inserted. The device is not a part of the toilet but can be easily connected to it and used at any time. The device can be used on both the inside and outside of the toilet, for men, women and children.

A process for preparing a repellant smooth surface includes applying a coating composition onto a smooth surface of a substrate having hydroxyl functional groups thereon and an average roughness Ra of less than 4 μm. The coating composition includes: (i) a polymerizable silane or siloxane or both selected from the group consisting of dimethyldimethoxysilane, dimethoxy-methyl(3,3,3-trifluoropropyl)silane, dimethoxy(methyl)octylsilane, diethoxydimethylsilane, (ii) a solvent and (iii) an acid catalyst. The process further includes polymerizing the silane or siloxane or both from the hydroxyl functional groups on the smooth surface of the substrate to form a chemical layer of graft polymers having ends anchored to the smooth surface and applying a lubricant coating over the formed chemical layer to adhere and maintain the lubricant on the smooth surface and form a lubricant-entrenched smooth surface as the repellant smooth surface.

A coated smooth surface of a substrate repels liquids and viscoelastic materials and can have anti-staining and anti-biofouling properties. The smooth surface can be coated by applying a chemical layer on the surface and a lubricant. Such coated surfaces are useful for use in toilets, urinals, or other devices for the processing of liquids and viscoelastic materials such as solid or semi-solid metabolic waste of human digestive system. Such coated surfaces can also be applied to windows for buildings or vehicles such as automobiles or camera lenses to repel liquids (e.g. rain), ice, frost, insect residues, and birds' feces.

The disclosure is the only product of its kind that is compact in size, requires low water, and has the ability to control urine splash back. This unprecedented product is uniquely designed with durable materials to ensure long term sustainability and can be easily installed in any location. The disclosure includes a handheld receptacle having a top orifice for receiving a urine and a bottom orifice for discharging the urine. The disclosure also includes a hose connected to the handheld receptacle in a rotatable connection, the hose comprising a trap run and a discharge end, wherein a user rotates the trap run and discharge end to a target holding the handheld receptacle.

Disclosed is a method for water saving by retrofitting an institutional plumbing fixture having a combination of an integral lavatory basin and a toilet bowel integrally attached thereto by inserting into the fixture a urinal-type collection receptacle having a water inlet opening on its top side and a water outlet opening on its bottom side; and fluidly interposing the receptacle via the inlet and outlet openings between the lavatory drain pipe and the drain trap provided for the plumbing fixture. Also disclosed is an institutional plumbing fixture retrofit for water saving, and a retrofit urinal-type receptacle.

A removable cartridge for a low or zero water urinal outlet comprises a body comprising a side wall including one or more locking projections projecting out from the wall. One or more resilient elements are provided in the wall and each resilient element includes one of the locking projections.

A waterless urinal having a motion sensor that opens the drain valve. This sensor also turns on an internal venting fan that draws air from in front of the P trap, upwardly thru the fan, and downwardly to vent the air down the sewer after the P trap. The whole system can be operated by a solar-powered battery system making it well suited for use in off-grid locations, areas prone to drought or water shortage, mobile homes, rest stops, and stadiums.

The improved urinal apparatus is configured for insertion in an outlet of a urinal. The urinal apparatus includes a hollow body defining an upper housing and a clamp ring/lower housing. The upper housing provides an open chamber configured to receive and retain a consumable detergent/malodour counteractant and the clamp ring/lower housing is configured to support and retain a resealing valve, which is operable to allow flow of fluid, such as urine, from above, but is operable to prevent backflow from below the resealing valve. The urinal apparatus also includes a consumable cap element, which includes an axial opening at least partway through, wherein the opening is configured to receive at least part of the upper housing. A body of the cap element comprises a plurality of radially extending fins. One of the upper housing or the consumable cap element comprise an upper member comprising an array of holes, which facilitate fluid flow and insertion and extraction of the urinal apparatus as a unit.