Graywater

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Graywater

Appendix G of the Uniform Plumbing Code (UPC) defines graywater as “untreated household wastewater which has not come into contact with toilet waste. Graywater includes water from bathtubs, showers, bathroom wash basins, and water from clothes-washer and laundry tubs. It shall not include wastewater from kitchen sinks or dishwashers.” The International Plumbing Code (IPC) defines graywater in its Appendix C as “wastewater discharged from lavatories, bathtubs, showers, clothes washers, and laundry sinks.” Some states and local authorities allow kitchen sink wastewater to be included in graywater. Other differences with the UPC and IPC definitions can be found in state and local codes. Project teams should comply with the graywater definitions as established by the authority having jurisdiction in their areas.
References in periodicals archive ?
To be able to bring our latest greywater innovations to a region which suffers badly from water scarcity and to realise immediate and excellent water-saving results makes us extremely proud.
Engineered for efficiency and longevity, WaterLab greywater systems re-use water from showers and laundry to irrigate landscapes.
The United States Environmental Protection Agency (EPA) estimates that the average American family uses 400 gallons of water per day, around 280 gallons of which is most likely from greywater sources.
Later this year, approval is expected for additional greywater uses, including groundwater recharge and limited direct potable use.
The wastewater treatment and recycling can reduce and mitigate this problem with recovery of useful products such as organic matter and water nutrients; furthermore it is needed to categorize the wastewater and treat the greywater and black water separately in order to make the system efficient and economical [3-5].
Construction of the piping to collect sanitation wastes such as greywater is unfinished, even though the facilities are in use by settlement residents (see Figure 2a).
The World Health Organization presents this manual, which provides step-by-step guidance on the implementation of the 2006 WHO Guidelines for Safe Use of Wastewater, Excreta, and Greywater, for managing health risks associated with the use of human wastes in agriculture and aquaculture.
Devised by Waterscan, the greywater recycling system takes water that has been used for showering, and treats it through an ultra-filtration membrane.
Are you using the greywater from your toilet system to its full advantage?
There's also a "living wall" with an activated carbon filter system that can recycle greywater for non-potable use.
It also advocates the use of alternative water resources where possible, including rainwater harvesting, greywater use for household cleaning and irrigation, the use of treated wastewater for agriculture and the setting up of desalination facilities for the treatment of sea and brackish water.
only has been adopted in urban wastewater [37] and greywater [38] only.