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By E. Lynn Grayson
While much progress has been made in the U.S. to address water quality since the first Earth Day in 1970, increasingly the critical issue of the day is water quantity and specifically sufficient availability of safe water for everyone. According to the World Water Council, 1 in 9 people in the world, or approximately 750 million individuals, lacks access to safe water. In January 2015, the World Economic Forum identified water scarcity as the #1 global risk based upon possible impact to society. These issues exist worldwide, including throughout the U.S.
This month, California Governor Jerry Brown announced the state's first-ever mandatory effort to cope with four years of the worst drought in California's history including a 25% use reduction on cities and towns. There are 5 things you need to know about California's water situation, according to National Geographic's ongoing research and study of water scarcity issues in the Western U.S.:
The good news is there are two technical advancements that are currently available to mitigate water scarcity issues—one more mainstream and the other yet to be a "politically correct" option given public perceptions:
• The sewage sludge is fed into the plant by conveyor belt and dried in a tube that separates solid waste from water. The Omni Processor's intensely hot incinerator reaches 1,000 degrees Celsius, scorching enough to kill all pathogens and, perhaps more important for those living downwind, to operate without the expected offensive smell.
• Converted into vapor, the water is spun in a centrifuge to remove remaining particles and then fed through two layers of filters. Next, it is cooled and condensed, at which point it is filtered one more time. The latest model can yield 86,000 liters of pure drinking water each day.
• The remaining solids are then fed into an incinerator, yielding a high-powered steam that drives a generator, which in turn produces the very electricity that runs the plant (the Dakar unit produces 150 kW per day), plus excess energy that can be diverted back to the surrounding community. Another byproduct is a phosphorus-rich, disease-free ash that can be used as fertilizer. And the circle of life continues.
While some solutions exist, water remains a precious natural resource and there is no alternative. Every sector of society needs to do their part to conserve, protect and restore water resources in conjunction with governmental action to regulate quality concerns, improve infrastructure and water distribution systems, and address use limitations when appropriate.
For more information about water security, recent developments, and ongoing efforts to ensure the availability of access to safe water for everyone, visit Water.org at http://water.org/ or World Water Council at http://www.worldwatercouncil.org/.
E. Lynn Grayson, Partner, Jenner & Block
Read more at Corporate Environmental Lawyer Blog by Jenner & Block LLP.
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