A system in which water flowing through the system flows in proximity to an ion generation device and to a UV radiation source combines silver photochemistry principles, heavy metal toxicity, and UV radiation to form a highly effective combined water disinfection process. Using ion generation and UV irradiation, the system synergistically improves the disinfection and bactericidal effects of ion generation or UV radiation working individually by making ion-exposed microorganisms more susceptible and less resistant to the bactericidal effects of UV radiation. The UV radiation source uses a manual wiping system to remove buildup that is a result of water supply minerals attaching to quartz sleeves used within the UV radiation source. The present invention introduces a device or other obstructive structure that creates a flow pattern that provides additional “wiping” of the quartz sleeves on a continual basis in conjunction with manual wiping.

Apparatus and systems for laundry wastewater treatment are provided. Generally, systems include one or more grinder pumps for receiving raw wastewater from laundry operations, a lint remover in fluid communication with the grinder pumps, a sediment filter in fluid communication with the lint remover, an ozone treatment chamber in fluid communication with the sediment filter, and a carbon filter. Methods can provide for continuous treatment of laundry wastewater that can be reused in laundry operations, or passed to a wastewater stream (such as sewage).

The present invention provides systems, methods, and articles for stress reduction and sleep promotion. A stress reduction and sleep promotion system includes at least one remote device, at least one body sensor, and at least one remote server. In other embodiments, the stress reduction and sleep promotion system includes machine learning.

An inline drain sanitizing system, includes: a manifold assembly including an inlet port, an outlet port, and a treatment port, wherein: the inlet port is configured to be couplable to a condensate supply line and receive unsanitized condensate, and the outlet port is configured to be couplable to a condensate drain line and provide sanitized condensate; and a treatment subsystem configured to interface with the treatment port and process the unsanitized condensate to generate the sanitized condensate.

Provided are anti-pathogenic sintered nanoparticle compounds made of zeolite, silver nitrate (AgNO.sub.3), silver dioxide nanoparticles (Ag.sub.2O np), and graphene. Provided are enhanced granulated activated charcoal (EGAC) compounds made of granulated activated charcoal, silver nitrate (AgNO.sub.3), silver dioxide nanoparticles (Ag.sub.2O np), and graphene. Uses of the same are provided, including in enhanced filtration systems and/or pressurized wastewater filtration plants.

Activated ferrate solutions, methods of their preparation, and methods of disinfecting surfaces and oxidizing pollutants in water are provided.

The invention relates to a photocatalyst that is active under irradiation with UV light, visible light and sunlight, comprising a powder or a ready-to-use nanometric suspension of nitrogen-doped TiO.sub.2, wherein the brookite crystalline phase is also present and whose doping nitrogen content (% by weight) is sufficient to ensure photocatalytic activity in the visible region. The photocatalyst can be easily applied to substrates of varying nature.

Provided herein are methods and compositions for water disinfection. The methods and compositions, which can include a peracid and a source of copper ions, are useful for treatment of water contaminated with recalcitrant microbes.

The present invention relates to a water distribution system with hygienisation capacity. According to a first aspect, the present invention describes a water distribution system (I) comprising a water supply, a heating source (IO0) or a point of inflow of externally heated water, at least one sensor measuring water quality, a flow path for water with a user outflow UO, and a control unit for operation of the water distribution system (1), said at least one sensor measuring water quality being connected to the control unit, wherein the water distribution system (I) comprises tubing in a tubing system where at least one portion of the tubing system in the water distribution system (1) comprises a tubing portion which is made of a plastic material comprising silver and/or zinc to provide an inner anti-biofilm of that tubing portion.

Described herein is a method of using hollow fiber filter cartridge. The method includes: providing a hollow fiber filter cartridge inside or outside an environmental cleaning equipment; allowing a wastewater to enter the hollow fiber filter cartridge from an outside of the hollow fiber filter under no water pressure or low water pressure (such as under 30 gw/cm.sup.2); allowing the wastewater to cross a plurality of nanopores of the hollow fiber filter cartridge under no water pressure or low water pressure (such as under 30 gw/cm.sup.2) to produce a clean water; and allowing the environmental cleaning equipment to filter wastewater to produce clean water continuously, thereby improving cleaning efficiency and reducing water consumption.