This specification describes systems for the treatment and reuse of grey water and related processes. An exemplary system collects grey water from baths and showers and treats it for use in toilet flushing. Influent bathing water passes through a prefilter to remove larger particles and flows into a grey water collection tank. Collected grey water is filtered through a membrane designed to remove suspended solids. Membrane permeate passes through a sorbent media to remove soluble organics and then flows into a permeate tank. A chemical agent is used to disinfect water in one or more parts of the system and optionally to clean the membranes. A control system manages the operation of system. The system operates in a generally daily cycle with permeation dispersed over a material time, for example 4 or 8 hours or more.

This specification describes an intake filter for use, for example, in a system that collects greywater from baths or showers for re-use in toilet flushing. The intake filter provides essentially dead-end filtration. An influent by-pass may be provided, but the filter is cleaned as required to reduce use of the by-pass. Cleaning is performed when permeability of the filter declines. An upstream sensor may be used to detect the permeability of the filter. In one cleaning method, flowing water, optionally with air, is used to backwash the filter. The impulse of the flowing water also moves one or more valves to direct backwash water to a sanitary drain. For example, pumped effluent may impinge against a first flap to close an effluent drain, the first flap being mechanically linked to open a flap covering the sanitary drain.

A multiple draining system for sinks or wash-basins mainly for domestic use. In particular, a draining system provided with a simple and reliable construction which allows to recover wastewater from sinks or basins when it is desired to use it for further processing or other direct uses. The system includes means for diverting wastewater flow alternatively to a sewage system and to a recovery system, by including a control positioned above the level of the bottom of the basin for collecting water.

Device and process for continuous recycling of wash water, so that water consumption is reduced in conventional personal wash, especially in a shower. The device comprises a surfactant detector (2), a flocculation tank (4), a water tank (5) for cleaned water and a bypass valve (3), wherein the flowpath shifts directly to the water tank (5) by means of the valve (3) bypassing the flocculation tank (4), in the absence of a surfactant in the flowpath.

According to embodiments of the present disclosure is a water delivery system that continuously flows and recirculates clean water, diverting only water that has touched a user's hands. No sensing is required to activate the water flow and the actions of the user effectively divert the dirty water to a drain. The water delivery system comprises a clean water outlet, a clean water inlet, a dirty water drain, and a circulation pump. A stream of water continuously flows from the outlet and is received by the water inlet if the stream is uninterrupted. If the stream is disturbed, such as by the hand washing activities of the user, the stream is diverted from the inlet and instead falls into a sink and into the drain.

The present invention describes an apparatus (1) for water supply and sanitary purposes, e.g. for allowing purification and either recycling of water or discarding of water, wherein the apparatus (1) comprises an on/off unit (2) comprising a battery (3) and a transceiver (4), and wherein the on/off unit (2) is activable by pushing an on/off knob (5) of the on/off unit (2) rendering the transceiver (4) to transmit a wireless signal to a control system to turn the apparatus (1) on respective off. Furthermore, the present invention also relates to an apparatus (1) for water supply and sanitary purposes, wherein the apparatus (1) is a shower device (1) comprising a handheld shower unit (9) having a magnetic valve (8), and also comprising a holder unit (10) for holding the handheld shower unit (9) when not being used, wherein a magnet (11) is arranged in the holder unit (10) or the handheld shower unit (9), and wherein an activation sensor (12) is provided in the holder unit (10) or in the handheld shower unit (9) so that the magnetic valve (8) is turned into an open position when the handheld shower unit (9) is removed from the holder unit (10), and wherein the holder unit (10) holds the magnetic valve (8) in a closed position when the handheld shower unit (9) is held by the holder unit (10) and not being used. Moreover, the present invention is also related to a handheld shower unit (9) for an apparatus (1).

The present invention describes a hybrid device allowing for purification and either recycling of water or discarding of water, wherein said hybrid device comprises a recirculation loop which facilitates recirculation of water within said hybrid device, and also comprises: a filter system comprising at least one filter; at least one water quality sensor, a modified drain, which is adapted to collect the water used and to facilitate the stream of water used towards the recycling loop and filter system, so that water can be purified and recirculated, or towards drainage; a water treatment unit arranged for hygenisation of water; a functionality sensor for the water treatment unit; wherein the hybrid device is arranged so that: it can operate in a recirculation mode providing purification and recirculation of water, until the water passing through said hybrid device is at a maximum level of contaminants; when any of said sensors is indicating the need to do so, and in particular when said at least one water quality sensor indicates that the water is contaminated above said maximum level of contaminants, the same water is redirected from recirculation to drainage and is discarded from the hybrid device.

The present invention describes a hybrid device (1) for a recirculation shower, allowing purification and either recycling of water or discarding of water, wherein said hybrid device (1) comprises a recirculation loop (2), a filter system (4) with a nano-filter (5) such as for instance an electropositive nano-ceramic filter, e.g. a nano alumina (fiber) filter, at least one filter quality sensor (3), at least one pre-filter (6), and wherein the hybrid device (1) is arranged to redirect the water from recirculation to drainage when the at least one filter quality sensor (3) indicates the need thereof.

This specification describes systems for the treatment and reuse of grey water and related processes. An exemplary system collects grey water from baths and showers and treats it for use in toilet flushing. Influent bathing water passes through a prefilter to remove larger particles and flows into a grey water collection tank. Collected grey water is filtered through a membrane designed to remove suspended solids. Membrane permeate passes through a sorbent media to remove soluble organics and then flows into a permeate tank. A chemical agent is used to disinfect water in one or more parts of the system and optionally to clean the membranes. A control system manages the operation of system. The system operates in a generally daily cycle with permeation dispersed over a material time, for example 4 or 8 hours or more.

The present invention describes a liquid recycling system and method for purifying and either recirculating or discarding of liquid. The system includes a liquid input line, a tank, and a circulation pump for providing recirculation of liquid from the tank. A filter and a heater are used to treat liquid from the circulation pump. A valve is provided to direct liquid either to a shower head or faucet, or back to the tank. Additional plumbing and components can be used to provide multiple independent recirculation loops with the tank. An electronic controller can be used to control components of the present invention, where a user could interface with the controller via a control panel or a software application accessed by a portable electronic device.