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The Biden administration announced $179 million for wastewater recycling projects, boosting plans to build the nation's largest plant in Southern California.
The initial costs of building a wastewater treatment plant can be more expensive than other methods of attaining water (e.g., groundwater or imported water), but it's much less costly than desalination. Once the facility is established, however, recycled water is less expensive than fresh, for use in industry or power generation.
The term "water reuse" is generally used interchangeably with terms such as wastewater reuse, water reclamation, and water recycling. A definition by the USEPA states: "Water reuse is the method of recycling treated wastewater for beneficial purposes, such as agricultural and landscape irrigation, industrial processes, toilet flushing, and groundwater replenishing (EPA, 2004)."
Industrial wastewater treatment describes the processes used for treating wastewater that is produced by industries as an undesirable by-product. After treatment, the treated industrial wastewater (or effluent) may be reused or released to a sanitary sewer or to a surface water in the environment.
In the face of dire drought, cities and water agencies are now investing heavily in large-scale wastewater recycling facilities. In face of recurring drought, cities seek security in wastewater ...
Waste-water recycling is not new. Sewage water is disinfected with ozone gas or ultraviolet lights and filtered through membranes with microscopic pores to remove solids and contaminants.
Resource recovery can be enabled by changes in government policy and regulation, circular economy infrastructure such as improved 'binfrastructure' to promote source separation and waste collection, reuse and recycling, [5] innovative circular business models, [6] and valuing materials and products in terms of their economic but also their social and environmental costs and benefits. [7]
As California deals with worsening drought, for example, San Francisco now requires new buildings larger than 100,000 square feet to have onsite wastewater recycling systems.