Onsite Water Reuse Systems In San Francisco, United States
Onsite Water Reuse Systems In San Francisco, United States
Source: https://www.eawag.ch
Author: Nof Afghani, Vasco Schelbert, Christoph Lüthi, Christian Binz
Usually dispatched in 2 to 3 days
Usually dispatched in 2 to 3 days
Category:
Water Resources & Reuse
San Francisco (SF) is a densely populated major economic hub in Northern California with high economic dynamism and fast population growth. SF used to have a non-diversified water supply system, which heavily relied on the longdistance transfer of surface freshwater. Since the end of the 20th century, increasing water consumption and repeated droughts have resulted in water stress, forcing local authorities to explore alternative water sources.
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Building-Scale Treatment for Direct Potable Water Reuse and Intelligent Control for Real Time Performance Monitoring Project (Pure Water SF)
Potable water reuse systems, whether centralized or decentralized, need to provide consistent high-quality water produced from a multiple barrier treatment system. In the United States, potable reuse projects have successfully produced high-quality water from a range of treatment systems from about 1 million gallons per day (mgd) to more than 100 mgd. This project adds to the body of knowledge for demonstrated project successes as it addresses the challenges of operating and maintaining small and decentralized purification systems. Currently, SFPUC uses a constructed wetland system to treat the wastewater generated in its headquarters building for non-potable reuse. PureWaterSF added to the existing system a demonstration direct potable reuse (DPR) building-scale treatment process that included ultrafiltration, reverse osmosis, and an ultraviolet advanced oxidation process (UF/RO/UV AOP) to purify the tertiary recycled water effluent from the wetland system. The treatment train, which treats approximately 80 percent of the water from the wetland system, was designed to have a small footprint and produce high-quality water that is able to meet drinking water standards. The treated water is redirected to the non-potable reuse system for toilet flushing in the SFPUC headquarter building.
A Water Reuse Policy Perspective
To advance the beneficial and efficient uses of high-quality, locally produced, sustainable water sources for the betterment of society and the environment through advocacy, education and outreach, research, and membership.
A Water Reuse Policy Perspective
To advance the beneficial and efficient uses of high-quality, locally produced, sustainable water sources for the betterment of society and the environment through advocacy, education and outreach, research, and membership.
Guidelines for Water Reuse and Recycling in Victorian Health Care Facilities
Security and quality of water supply is vital for a number of key processes within health care facilities (HCF), such as hospitals, aged care facilities, medical centres and mental health facilities. Many HCF however consume large volumes of potable water and as the population of Victoria continues to grow and climate change reduces inflows to traditional water storages increased pressure is placed on potable water supplies. As such there is a need for HCF to consider ways to reduce their reliance on reticulated potable water through conservation or augmentation with alternative water supplies for non-drinking applications. Augmentation can be achieved through either alternative water supplies such as rainwater, onsite reuse (direct use of water for the same or
another function without the need for treatment) or recycling (treatment of water) of water sources. Community benefits to such an approach include both reduced potable water consumption and reduced trade waste discharge.
Guidelines for Water Reuse and Recycling in Victorian Health Care Facilities
Security and quality of water supply is vital for a number of key processes within health care facilities (HCF), such as hospitals, aged care facilities, medical centres and mental health facilities. Many HCF however consume large volumes of potable water and as the population of Victoria continues to grow and climate change reduces inflows to traditional water storages increased pressure is placed on potable water supplies. As such there is a need for HCF to consider ways to reduce their reliance on reticulated potable water through conservation or augmentation with alternative water supplies for non-drinking applications. Augmentation can be achieved through either alternative water supplies such as rainwater, onsite reuse (direct use of water for the same or
another function without the need for treatment) or recycling (treatment of water) of water sources. Community benefits to such an approach include both reduced potable water consumption and reduced trade waste discharge.
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