Change The Course

Background and Source: Sandra Postel directs the independent Global Water Policy Project, and lectures, writes and consults on global water issues. In 2010 she was appointed Freshwater Fellow of the National Geographic Society, where she serves as lead water expert for the Society’s freshwater efforts.  Sandra is co-creator of Change the Course, the national freshwater conservation and restoration campaign being pioneered by National Geographic and its partners.

But as David Sedlak explains in his fascinating book, Water 4.0: The Past, Present, and Future of the World’s Most Vital Resource, nothing about water has ever been simple. The urban water systems we rely on so heavily were developed in response to three major crises stretching back centuries — from water shortages in the Roman Empire to cholera outbreaks in the Industrial Revolution to polluted lakes in the United States in the 1970s.
Brad Plumer for Vox (x)
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The K Problem: Treatment Options and Process Monitoring Solu…

Ostara has developed a method for capturing precious nutrients including K during the treatment process.

For desalination plants treating seawater, the problem of brine disposal is potentially even greater. One 1985 study of the contaminated ag waste water in the Central Valley’s heavily polluted San Luis Drain showed the water contained 9.2 grams of total dissolved solids per liter of water. Clean seawater from the Pacific Ocean has around 38 grams of dissolved solids per liter.

That might not seem like a huge problem: after all, people will shell out between five and ten bucks a pound for sea salt, which is just seawater with the water removed. But it adds up. If the Carlsbad plant puts out 50 million gallons of freshwater a day as advertised, that means (at 38 grams per liter, converted from the metric) it’s removing 417,270 pounds of salt and other solids a day from that water.

And unless the people of San Diego start eating a pound of sea salt for every three gallons of freshwater they drink, bathe in, or water their gardens with, that means a surplus of removed solids piling up at the desal plant.

Chris Clarke explains more of the waste realities for desalination here.

Photo credit: NBC News

The CEO of Alibaba, Jack Ma is spearheading. #WaterWednesday

The CEO of Alibaba, Jack Ma is spearheading. #WaterWednesday

Estimates show that U.S. companies could save up to 28 billion gallons of water per year if they optimize cooling in their buildings. That’s as much as over 750,000 Americans use at home in a year! Environmental Defense Fund worked with AT&T to develop a framework and set of tools that can help your company reduce its water use from cooling and manage its water risk.
water efficiency toolkit (x)
imagewin:

A wave viewed from underwater

imagewin:

A wave viewed from underwater

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Robots automate testing for bacteria, including coliforms

space-robotics:

Taihei Environmental Science Center has developed a system that automatically performs water quality testing, and can detect bacteria such as E. coli. In the past, this work had to be done manually. The system uses three robots to completely automate all stages of the process, from…

Neat!

pimpmyycamel:

Darbandikhan, Iraq | Source

Is this the big lake?

pimpmyycamel:

Darbandikhan, Iraq | Source

Is this the big lake?

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Real Time Fresh Water Sewage Monitoring