The present inventive concept relates to a water recycling device comprising: an outlet configured to output treated water; a drain for collecting used water output from said outlet; a return/evacuation path in liquid communication with said drain, wherein said return/evacuation path comprises an inlet for receiving water collected by said drain; a return path in liquid communication with said return/evacuation path; a treatment path in liquid communication with said return path and said outlet; an external water path in liquid communication with said treatment path, said external water path being connected to an external water outlet; a valve arrangement configured to accept as inputs used water from said return path and/or external water from said external water path, said valve arrangement being placed between said return path and said treatment path, said valve arrangement being configured to direct said inputs to said treatment path, said valve arrangement being configured to mix said external water with said used water from said return path; a circulation pump for providing a flow in said water recycling device; and a water treatment arrangement placed downstream to said valve arrangement.

A fluid device includes: a flow main body including a side wall along a first axis and configured to flow a fluid from an inflow portion provided at one side of the first axis toward an outflow portion provided at the other side of the first axis; a plate provided at the other side of the first axis of the flow main body and having a first surface intersecting the first axis; a standing wall extending along the first axis from the first surface toward the one side of the first axis and having a length along the first axis shorter than the side wall; and an ultrasonic element disposed at an outer side of a collection region of the plate and configured to transmit an ultrasonic wave along the first axis when the standing wall and a region surrounded by the standing wall on the first surface are defined as the collection region.

A flocculation system is provided including a vessel having an open top. The flocculation system also includes a sidewall comprised of a water-impermeable material. The flocculation system further includes a first bottom comprising the water-impermeable material. The flocculation system further includes a second bottom having a floc filter that passes flocs and prevents the passage of a cleaning tool. The flocculation system further includes a floc trap below the second bottom. The floc trap includes a space defined by the sidewall, the first bottom, and the floc filter. In some implementations, the flocculation system includes a flocculant disposed on the sidewall, the floc filter, or the first bottom.

An apparatus for purifying water includes a first cathode encircling a first anode, with a first gap remaining between these for purifying water. The first anode is included in an anode arrangement, which additionally includes an electrically conductive flange, an electrically conducting anode support connected to the first anode and the flange and arranged to supply electricity to the first anode, and a connection point for connecting an electric wire to the flange. The flange is mechanically supported to the first cathode in said longitudinal direction (z). The flange extends in such a way that said connection point is at least as far from the longitudinal centre axis (AX) of the cathode arrangement as a point of the first cathode that is closest to said connection point.

The present invention provides a multi-stage system for treating greywater comprising an electrochemical treatment module configured to carry out electrooxidation and electrocoagulation processes and a filtration module comprising a multistage filtration system for the treatment and removal of chemical and biological contaminants in greywater.

A main housing provides a first reservoir and a second reservoir. Water flows from the first reservoir to the second reservoir. A draining aperture in the first reservoir directs water from the first reservoir to the second reservoir. The water may be flushed from the first reservoir to the second reservoir. In another embodiment, the water may flow directly from the first tank to the second tank without the flush. A pump circulates water from the second reservoir to the first reservoir. The pump directs the water through a filtration system to filter the water to remove at least some of the dirt, debris, and other contaminants from the water. The filtered water is then returned to the first reservoir. An overflow relief in a dividing wall of the first reservoir directs overflow water to the second reservoir.

Water purification may occur by introducing sufficient heat into a standing fluid wave produced by supplying impure water into a supersonic gas stream. At least partially purified water may be recovered in the form of steam and undergo condensation into liquid water thereafter. Such water purification methods may comprise: generating a supersonic gas stream by feeding a gas through a shockwave nozzle under conditions sufficient to achieve a supersonic velocity, supplying impure water into the supersonic gas stream to produce a standing fluid wave comprising atomized water droplets downstream from an exit end of the shockwave nozzle, introducing sufficient heat into the standing fluid wave to cause at least a portion of the atomized water droplets to phase change into steam, and obtaining the steam as an overhead stream separated from an effluent stream containing one or more contaminants.

A water-using household appliance includes a pump sump, a filter element arranged at least partially in the pump sump, and a nozzle unit arranged on the pump sump. The nozzle unit produces an annular flow between the pump sump and the filter element in order to remove dirt from the filter element, with the annular flow flowing around the filter element only in one direction of flow.

An additive sub-system for a wastewater management system of a vehicle including at least one holding tank and a toilet has a controller, at least one additive dispenser and a pump. The at least one additive dispenser is in fluid communication with the at least one holding tank or the toilet. The pump is associated with each additive dispenser of the at least one additive dispensers. Each pump is controlled by the controller to dispense an additive from the at least one additive dispenser to the at least one holding tank or the toilet.

An apparatus for delivering wastewater from a recreational vehicle to a drain includes a housing having an outer wall and an inner wall generally perpendicular or slightly angled to the outer wall. The housing and the inner wall define an inlet chamber above the inner wall and a further chamber below the inner wall. The housing further includes an outlet downwardly extending from the inlet chamber.