Those three excerpts are from a good article in the SacB.
Ever been to Cali and the beach. Nice place. I can see why they would be reluctunt and careful about approving these desal plants because of the amount of damage potential.
Can't say that I blame them for being careful, but if it don't rain soon, they better be able to approve and build these plants a lot faster.
The state has more than a dozen permitted desalination plants, but they are all small. When Carlsbad begins operating, it will produce about 25 times more drinking water than all of them combined.
About a dozen new desalination projects are in various planning stages throughout the state. Only a few are as large as Carlsbad. The nearest to construction is another Poseidon project, proposed in Huntington Beach. A final permit from the state Coastal Commission comes up for a vote late in 2015.
Read more here:
Could desalination solve California s water problem The Sacramento Bee The Sacramento Bee
Desalination plants operate by drawing in seawater. Unless that intake is carefully designed, it can harm marine life. Reverse-osmosis filters are so fine that they allow only water molecules to pass. Everything else entering the desalination plant is killed.
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Could desalination solve California s water problem The Sacramento Bee The Sacramento Bee
The second major environmental concern is discharge water. Most desalination plants take in two times more seawater than the fresh water they produce. To produce 50 million gallons per day of fresh water, Carlsbad will draw in 100 million gallons of seawater. The difference is returned to the ocean as discharge water, but with its salinity doubled.
The discharge water is so salty that it doesn’t dissolve well in the ocean.
“It’s like oil and vinegar – they stay separate,” Whitney said. “You end up with these very large dead zones … where you have really salty water just sitting on the ocean bottom.”
Read more here:
Could desalination solve California s water problem The Sacramento Bee The Sacramento Bee