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Originally Posted by hallenrm
From the sewage water treatment plants, of course!  |
Can you believe that a recent vote on this in Queensland voted against re-cycled water!!
And this in the second driest (after Antarctica!) continent in the world !!??
This looks promising
Although I wonder if solar distillation is not the answer especially in such a sunny country as Australia.
UCLA Engineering: News Center
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Today’s Seawater is Tomorrow’s Drinking Water:
UCLA Engineers Develop Nanotech Water Desal Membrane
Researchers at the UCLA Henry Samueli School of Engineering and Applied Science today announced they have developed a new reverse osmosis (RO) membrane that promises to reduce the cost of seawater desalination and waste water reclamation.
Reverse osmosis desalination uses extremely high pressure to force saline or polluted waters through the pores of a semi-permeable membrane. Water molecules under pressure pass through these pores, but salt ions and other impurities cannot, resulting in highly purified water.
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Next Generation
Water Purification Technology
Freshwater scarcity is a worldwide issue. The World Health Organization (WHO) estimates that half the world’s population will face water shortages by 2025.
In the United States, the Environmental Protection Agency (EPA), projects water shortages for 36 states by 2013. With only 2.5% of the water on the globe freshwater, supplies are limited.
. . .
However, based on decades-old membrane technology, RO remains quite expensive in part because it uses large amounts of energy.
Incorporated in late 2005, NanoH2O, LLC, is an early stage company developing a new generation of RO membranes for water reuse and desalination. Based on groundbreaking research at the University of California, Los Angeles (UCLA), these membranes leverage the benefits of nanotechnology to improve dramatically the baseline economics of desalination and water reuse without having to reinvest in a new technology platform or alter current operational techniques.
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http://www.nanoh2o.net/home.html
