Xylem reuse system to up potable water supply in Los Angeles
Water technology company
Xylem’s Wedeco MiPRO photo advanced oxidation process installed at Los Angeles’
Terminal Island Water Reclamation Plant will ensure it complies with California’s
groundwater recharge regulations for indirect potable reuse in the safest and most cost-
effective way possible according to the manufacturer.
Xylem’s Wedeco MiPRO solution will be installed at the as a final barrier against
pathogens and contaminants that cannot be removed by other technologies. Its
installation is part of an expansion of the plant which includes microfiltration and reverse
osmosis prior to MiPRO treatment.
The customized solution, validated through pilot-scale testing at the plant, will be
the first greenfield MiPRO design using ultraviolet (UV) light with chlorine for indirect
potable reuse Xylem said. The system will enable the plant to use its existing chlorination
facility and will reduce significantly the overall cost relative to UV with hydrogen peroxide,
The plant treats wastewater from more than 100 businesses in the heavily
industrialized Los Angeles harbour area and from 130,000 residents, including the
communities of Wilmington, San Pedro and a portion of Harbor City.
The plant purifies tertiary effluent to produce potable water for recharging drought-
stressed drinking water aquifers. The recycled water will counter increased groundwater
salinity caused by seawater intrusion and supply local industries.
“This application of UV with chlorine is a significant breakthrough in treatment to
make water reuse more sustainable and cost-effective,” said North America water reuse
leader for Xylem, Keel Robinson.
Additionally, Xylem will be supplying a Sanitaire aeration system to the Terminal
Island Water Reclamation Plant to up the performance of the existing wastewater
biological treatment system. Xylem has now provided fine-bubble diffused aeration to all
of Los Angeles Sanitation’s wastewater treatment plants.
On May 5, California’s state water board approved emergency drought regulations in
a bid to reduce water use in urban areas by 25%. The measures call for cities and water
agencies to reduce water usage by 8-36%.
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