A foreign object protection system for a dishwasher for treating dishes according to a cycle of operation includes a tub, a sump,a recirculation pump;and a foreign object protection system comprising a grate, wherein liquid in the tub collects in the sump and is recirculated by the recirculation pump such that the liquid is drawn through the foreign object grate.

Provided herein are disinfection compositions, devices, systems and methods useful for decontamination and/or disinfection of water and other liquid solutions. The disclosed composite materials can comprise a germicidal surface comprising a support substrate, one or more micrometric aggregates of titanium oxide on the support substrate, the titanium oxide aggregates comprising chloride atoms, and one or more micrometric aggregates of silver attached to the chloride atoms of the titanium oxide aggregates, wherein the micrometric aggregates of titanium oxide with silver atoms have a germicidal activity. Methods of using the same for reducing or eliminating microorganisms in water or a fluid can comprise contacting water or fluid with microorganisms with the composite material, wherein the microorganisms in the water or fluid are reduced or eliminated from the water or fluid.

A filtration apparatus and an immersion-type filtration method using the same having excellent treatment efficiency and cost performance are provided. The filtration apparatus of the present invention is an immersion-type filtration apparatus that purifies a liquid to be treated by using a filtration membrane, and includes a plurality of filtration units each including a filtration vessel and at least one filtration membrane module immersed in the filtration vessel, the filtration units being arranged in series. The liquid to be treated is preferably supplied from an upstream filtration unit to a downstream filtration unit of the filtration apparatus by causing the liquid to be treated to overflow. An air bubble supplying unit that supplies air bubbles from under the filtration membrane module is preferably provided. The immersion-type filtration method of the present invention uses this filtration apparatus and purifies the liquid to be treated by supplying a portion of the liquid to be treated in the upstream filtration unit to the downstream filtration unit.

System and method of recycling grey water, and more particularly a system and method to utilize grey water resulting from a cleaning activity such as a laundry or shower as an environmentally safe form of irrigation. In accordance with one embodiment of said system, pressure sensors and transmitters in various zones may be communicatively coupled to a system controller capable of regulating the use of at least one variable frequency drive with said system.

A system for treating wastewater, such as laundry water or car wash water, using a combination of microfiltration and/or ultrafiltration membranes and reverse osmosis. The system can use these elements to pretreat water that is then filtered by a media filter to reduce turbidity.

A water reclamation system includes a drainage lane overlaying a downward graded area of land and configured to receive water run-off from the land. At least one collection ditch coupled to the at least one drainage lane is configured to receive water from the drainage lane. At least one collection pipe housed is within and extends outwardly from the at least one collection ditch. A first container is coupled to the at least one collection pipe and configured to receive water from the at least one collection pipe. Housed within the first container is at least one water purifying filter and a pump configured to evacuate at least a portion of water within the container to a destination. A second container is in communication with the first container and is configured to: subject water received from the first container to a purification process; and store the purified water.

Reactive oxygen species formulations as well as methods for making and using such formulations. Reactive oxygen species formulations comprising one or more parent oxidants, such as peroxides, or peroxyacids, and one or more reactive oxygen species. (ROS). The formulations optionally contain in addition one or more reactive species other than ROS. The reactive oxygen species and other reactive species when present provide chemical reactivity, oxidative activity and/or antimicrobial activity not provided otherwise by the parent oxidant.

Provided are biocide compositions and bleach compositions comprising organic acyl polyoxychlorine and related methods. The reduction of the acyl polyoxychlorine group releases a reactive intermediate that undergoes a series of cascading reduction steps, resulting in termination products Generally Recognized As Safe.

A biocidal composition comprising a synergistic ratio of 2,2-dibromomalonamide and hydroxymethyl-substituted phosphorus compound, and its use for the control of microorganisms in aqueous and water-containing systems.

A circulating-water utilization system (1) to be constructed in a specific area includes; a circulation channel (2) having a closed loop shape through which circulating water flows; a discharge channel (4) through which wastewater discharged from a water consumer (3) is discharged to the circulation channel (2), the water consumer (3) being composed of water consuming members; a purifying unit (8) configured to purify the circulating water containing the wastewater flowing through the circulation channel (2); a supply channel (6) configured to supply the circulating water purified by the purifying unit (8) to the water consumer (3); water intake parts (10) for intake of the circulating water from the supply channel (6), disposed on the respective water consuming members; and sterilizing units (11) disposed on the respective water intake parts (10), and configured to individually sterilize the circulating water to be supplied to the respective water consuming members.