The invention relates to a filtration device, in particular for the filtration of microplastics for a water-bearing household appliance, wherein the filtration device comprises a housing in which a filter element is arranged, wherein the filter element is designed in such a way that it encloses an inner cavity which is fluidically connected to a supply line element, wherein a first drain element is arranged along the height axis Z above the filter element, wherein a second drain element is arranged along the height axis Z below the filter element.

Systems and methods for wastewater treatment are described. In some embodiments, a wastewater treatment system may include a container configured to receive and store at least a portion of incoming wastewater during a digestion process that generates biogas and a biogas burner. The biogas burner may be arranged to receive and burn at least a portion of the biogas generated by the digestion process. The system may be configured to heat solids separated from the wastewater such that: (i) the solids separated from the wastewater are maintained at a temperature of at least 70 C. for at least 30 minutes; and/or (ii) a water content of the solids separated from the wastewater is less than 15% by mass.

An exemplary power system utilizes turbines configured within a water intake conduit to the desalination processor to produce power for the desalination processor. Water intakes are configured to provide a natural flow of water to the desalination processor though hydrostatic pressure. One or more turbines coupled with the water intake conduits are driven and produce power for the system, as well as through solar and battery power. The desalination processor incorporates Graphene filters to and may include a structured water system to increase the H3O2 concentration of the water prior to Graphene filters. Discharge water may be pumped back into the body of water but be separated from the intakes. A secondary power source, such as a renewable power source, may be used to produce supplemental power for the system. Power produced may be provided to a secondary outlet, such as a power grid, all above and/or underground.

A bathroom system includes a shower system, a sink system, a gray water tank, a toilet, a first conduit, and a second conduit. The shower system includes a drain ring configured to collect gray water from the shower system. The gray water tank includes an internal filtration system and is configured to filter and store gray water. The gray water tank is configured to introduce a chemical into the gray water and is configured to draw electrical power from a power supply. The first conduit is coupled to the gray water, it connects the shower system and the gray water tank, and it is configured to transfer the gray water from the drain ring to the gray water tank. The second conduit is configured to transfer the gray water from the gray water tank to the toilet to provide water for flushing.

A grey water reclamation system for a recreational vehicle includes an on-board use that generates grey water having a contamination level, a grey water treatment tank fluidly connected to the on-board uses to collect the grey water and treat the grey water therein to form treated grey water, and a coagulant dispenser and a flocculant dispenser each fluidly connected to the grey water treatment tank and configured to supply a predetermined amount of coagulant and flocculant, respectively, to the grey water treatment tank. The system also includes a grey water supply tank fluidly connected to the grey water treatment tank configured to receive the treated grey water therefrom and supply the treated grey water to a particular on-board use. The predetermined amount of coagulant is based on the contamination level or a turbidity of the treated grey water.

The invention provides various methods of managing a recreational body of water. In some embodiments, the invention provides methods for assessing whether a recreational body of water that previously contained 5,5-dimethylhydantoin (DMH) still contains DMH. Furthermore, some embodiments provide a method of testing a recreational body of water that includes DMH by taking a series of oxidation-reduction potential (ORP) measurements for the water while it has a free chlorine level in a range of about 0.5 to 1.0 ppm, and in response to those measurements, determining whether the DMH present in the water is undergoing decomposition.

A particulate filtration system for an appliance includes a receiver having inlet and outlet portions. The inlet portion receives effluent from a wastewater conduit and combines the effluent and a coagulant from a coagulant reservoir to define a mixed solution. The system includes a rotor that receives the mixed solution from the receiver and rotates about a rotational axis to generate a centrifugal force to separate the mixed solution into coagulated particles and filtered fluid. The centrifugal force biases the coagulated particles from an interior of the rotor and upward along an angled perimeter wall of the rotor. The filtered fluid is delivered to a drain outlet via the outlet portion of the receiver. The system includes a collection basin that surrounds the rotor which rotates within a central area of the collection basin. The collection basin receives the coagulated particles from the angled perimeter wall of the rotor.

Articles comprising pressure-sensitive adhesives and methods of their use for removing micro- and nanoplastic particles from various media, including wastewater effluent, laundry effluent, and indoor air, are disclosed.

According to embodiments, an improved apparatus and methods of use are provided for the removal and degradation of contaminants from a fluid stream, the apparatus comprising an electrochemical cell having at least one electrode and at least one helicoidal baffle positioned within a fluid path of the cell. The helicoidal baffle may be configured to guide fluid flow along its axis, generating turbulent vortices that disrupt the diffusion layer at the electrodeelectrolyte interface, increase mass transport, and enhance reaction rates. Parameters of the helicoidal baffle, including diameter, number of fins, fin thickness, revolutions per unit length, and meridian profile shape, may be controlled to optimize performance. The apparatus may further operate to generate oxidizing agents by electro-oxidative reactions, thereby degrading contaminants in the fluid stream and discharging a treated effluent.

A water recycling system for use in a premises comprises a filter system for receiving and filtering greywater; a storage tank for receiving and storing water from the filter system, the storage tank comprising a mains water inlet for receiving mains water; a distribution pump for pumping water from the storage tank to an end use; a control system for controlling operation of the system; and a plurality of flow meters in communication with the control system for measuring flow of water into and through the system and communicating flow data to the control system. A first flow meter is positioned to measure the flow of mains water entering the premises, a second flow meter is positioned to measure the flow of mains water entering the storage tank, and a third flow meter is positioned to measure the flow of water entering the storage tank from the filter system.