An indoor grey water purification and reuse device, system and method for public buildings is disclosed. The grey water purification and reuse device includes a grey water storage tank, a grey water treatment assembly and a pneumatic reclaimed water tank assembly which are sequentially arranged from top to bottom. The grey water storage tank is used for storing grey water from one floor above collected by a grey water collecting device. The grey water treatment assembly is used for carrying out multistage purification treatment on the grey water in the grey water storage tank. The pneumatic reclaimed water tank assembly is used for disinfecting reclaimed water subjected to multistage purification treatment and supplying water to reclaimed water reuse facilities on the current floor of the building in a constant-pressure mode.

A recycling device (200) for recycling used water from at least one used water source (100, 101) is provided. The recycling device (200) comprises a first water tank (210) arranged to receive used water from the at least one water source (100), and sensor means (211) arranged to measure the water quality of used water in the first water tank (210). The recycling device (200) is characterized in that it comprises a second water tank (220) arranged to store used water within the recycling device (200), and a water pump (240) and one or more valves (231, 232, 233, 234, 235; 301). The pump (240) and one or more valves (231, 232, 233, 234, 235; 301) arranged in the recycling device (200) such that used water is able to be stored in the second water tank (220), or recycled out of the recycling device (200) from the first water tank (210) or from the second water tank (220), when the water quality of the used water is above a determined threshold level. Also, a method and a computer program performed and executed in the recycling device (200) for recycling used water from at least one used water source (100, 101) are also provided. Furthermore, a recycling system (400) comprising a recycling device (200) and at least one used water source (100, 101) and a recycling system (400) comprising a recycling device (200), at least one used water source (100, 101) and at least one water consumption device (100, 102) are also provided.

Disclosed is a cascade water recycling intelligent system for shale gas exploitation, comprising a cascade water recycling system, wherein a data output end of the cascade water recycling system is connected with a data input end of an information system, a data output end of the information system is connected with a data input end of a decision making system, and a data output end of the decision making system is connected with a regulator; the cascade water recycling system comprises at least one time of water quantity judgment, a current exploiting intensity of shale gas is continued under a condition that the water quantity does not exceed a water safety threshold; and monitoring data is transferred to the information system under a condition that the water quantity exceeds the water safety threshold; the information system is further used for transferring the collected data to the decision making system.

A passive water-and-energy saving washing unit is provided having a first shower sub-assembly and a second shower sub-assembly. The first shower sub-assembly comprises a first water reservoir, for holding a predetermined volume of water for washing at least part of a body, a water heater, for heating water for the first water reservoir, and a shower head, in fluid communication with the first water reservoir for receiving water from the reservoir and providing water spray on the body part. The second shower sub-assembly comprises a second, grey water reservoir, for collecting the sprayed water from the first shower head and running off the body part, a shower head, in fluid communication with the second water reservoir for receiving the water from the reservoir and providing water spray on the body part, and a water pump, for pumping the water from the second water reservoir to the second shower head. A corresponding kit and a method for washing at least part of body with a washing unit are also provided.

Method for operating a water system (10). The water system (10) comprises a fresh water subsystem (11) being configured to provide fresh water to water consumers (13, 14, 15, 16, 17, 19), wherein first water consumers (13, 14) generate black water as waste water, and wherein second water consumers (15, 16, 17, 18, 19) generate grey water as waste water. The water system (10) comprises a waste water subsystem (12) being configured to receive the waste water from the water consumers (13, 14, 15, 16, 17, 19). The waste water sub system (12) comprises a waste water diverter (23) being configured to provide in a black water status of the waste water diverter (23) waste water to a drain (24) thereby treating waste water as black water, and provide in a grey water status of the waste water diverter (23) waste water to a grey water tank (22) thereby treating waste water as grey water. The method comprises the following steps: Detect by a fresh water controller (26) being installed in the fresh water subsystem (11) a fresh water consumption in the fresh water subsystem (11) and provide a respective first output signal to a grey water controller (25). Determine by the grey water controller (25) on basis of the first output signal provided by the fresh water controller (26) a control signal for the waste water diverter (23) to switch the same either into the black water status or into the grey water status.

The present invention relates to a water disposable system comprised of a connecting member having first side connected to at least one unwanted water source and one valve to control the flow of an unwanted water. A toilet water tank is connected a second side of the connecting member, wherein the water tank comprises: a strainer in a stand pipe; a two float system, wherein a first float is set at a minimum tank volume water line, and a second float set at maximum tank volume water line. A button is coupled with a second float allowing the intake of the fresh water from the fresh water pipe upon actuation. A transparent window or gauge is positioned on the front wall of the tank for determining the volume of water in the toilet tank.

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).

Disclosed herein is a device for facilitating siphoning of greywater (graywater) or gently used water. An adapter is designed to fit onto the end of a hose or tube. The adapter is manually held tightly or attached by friction to a spigot or faucet. The faucet is turned on and running water primes the hose. The adapter is then placed under the surface of a collection of greywater in a sink, tub, clothes washer and the like. Greywater is then allowed to flow to a garden, lawn, cistern or other place where the greywater can be put to use instead of shunting it into a sewer. The device includes a funnel-shaped portion and a threaded portion. The device is made from a pliant material such as a silicone rubber or plastic.

Embodiments of the present disclosure generally provide a grey water interface valve liquid level sensor system. The liquid level sensor system may deliver information about the water level and the water movement that occurs in a water reservoir. A control unit may then activate a valve to open so that the water can be removed via vacuum.

The present disclosure provides a system for recovering and reusing graywater generated from at least one graywater source in a building. The system includes a controller configured to control recovery and reuse of the graywater; a graywater recovery device communicably coupled to the controller and configured to recover the graywater from the graywater source of the building; and a graywater distributor communicably coupled to the controller, connected to the graywater recovery device, and configured to distribute the recovered graywater to at least one target position in the building for reuse, wherein the controller controls the graywater recovery device to deliver the graywater to the graywater distributor according to a control signal sent by a user, and the controller controls the graywater distributor to deliver the graywater to a target position designated by the user for reuse according to a control signal sent by the user.