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Alan
Super Nomad
Posts: 1628
Registered: 4-6-2005
Location: Yucaipa, CA/La Paz
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Trash?? Aren't they just putting back what they took out?
I'm pretty sure there is just as much water on earth now as they has always been. I can't help but wonder if CA's water rationing isn't contributing
to it's continued drought. If people aren't watering lawns, golf courses and filling swimming pools aren't they impacting the evaporation,
condensation, precipitation cycle?
In Memory of E-57
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durrelllrobert
Elite Nomad
Posts: 7393
Registered: 11-22-2007
Location: Punta Banda BC
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No brine discharge technology
Desalination technology can access the world’s most abundant supply of water, but it is currently limited by high economic and environmental costs and
production issues that limit productivity and efficiency. More specifically, it results in production of a hyper-saline byproduct in the form of salt
scaling or brine. The second problem is a lack of efficiency due to wasted thermal energy and the high cost of electricity. EFD Corp. patented
technology solves these problems by using advanced spray drying and vapor compression distillation techniques to produce fresh water at a lower cost
without producing salt scaling or brine.
[url=www.efdcorp.com/
]www.efdcorp.com/
[/url]
Bob Durrell
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rts551
Elite Nomad
Posts: 6700
Registered: 9-5-2003
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I can not find where they have implemented this technology anywhere. They are looking for investors though.
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durrelllrobert
Elite Nomad
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This is the plan
Quote: Originally posted by SFandH  | Maybe. Here are some recent experiences.
"After enduring severe water shortages during a drought in the late 1980s, Santa Barbara voters agreed to spend $34 million to build a desalination
plant. It opened in 1991 and provided water for four months. When the drought ended, the city shut it down. Water from reservoirs and other sources
was significantly cheaper.
Similarly, Australia spent more than $10 billion building six huge seawater desalination plants during a severe drought from 1997 to 2009. Today,
Cooley noted, four are shut down because when rains finally came, the cost of the water became noncompetitive."
Cost:
Desalinated water typically costs about $2,000 an acre foot -- roughly the amount of water a family of five uses in a year. The cost is about double
that of water obtained from building a new reservoir or recycling wastewater, according to a 2013 study from the state Department of Water Resources.
The power needed to run the plant, in this case the Carlsbad plant:
about 38 megawatts per day, enough to power 28,500 homes
http://www.mercurynews.com/science/ci_25859513/nations-large...
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The San Diego County Water Authority (SDCWA) has agreed to buy at least 48,000 acre-feet of water from the Carsbad plant each year for about $2,000 an
acre-foot. An acre-foot equals about 326,000 gallons, roughly enough for two families of four for a year. As of June 29, 2015 the plant is now
connected the existing SDCWA aquaduct in San Marcos via a 10 mile long, 54 inch pipeline.
to www.kpbs.org/.../carlsbad-desalination-plants-pipeline-now-complete/
Bob Durrell
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Mexitron
Ultra Nomad
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Registered: 9-21-2003
Location: Fort Worth, Texas
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Seems ridiculous to be paying for desal in San Diego when all they have to do is let a few alfalfa ranches stop producing.
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BajaRat
Super Nomad
Posts: 1303
Registered: 3-2-2010
Location: SW Four Corners / Bahia Asuncion BCS
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Mood: Ready for some salt water with my Tecate
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| Quote: Originally posted by laventana | | Quote: Originally posted by durrelllrobert | | The Ensenada plant is being built by a S. Korean company in 1/5th the time (2 years Vs.10 years) and 1/200th the cost ($48M vs $1B) of the Carlsbad
facility, mostly because it took 6+ years just to get the permits for the Carsbad facility. Of course the Carsbad facility will produce 50 million
gallons of drinking water per day and the Ensenada facility will only produce 11.4% of that (5.7 milloin gal./day). Both facilities use reverse
osmosis technology to desalinate sea water with a 50% efficiency (two gallons in/ 1 gallon saline solution out). In both cases the saline solution is
about twice as salty as sea water but the relatively smalll quantity (about 5.7 million gallons/day for Ensenada) is rapidly dilluted to equalibrium,
despite what the naysayers tell us. |
They should be looking into building offshore or nearshore wind farms or wave/tide pumps where there is wind or waves to drive the desal pressure
pumps IMHO. |
Couldn't agree more..... The possibility of major bird strikes might rule out the near shore wind turbine options though.
The brine is going to be the issue if produced in these quantities
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David K
Honored Nomad
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Location: San Diego County
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In the northern gulf (or anywhere for that matter), the technology of tidal turbines would be effective... the natural flow of water coming in and
going out of bays or inlets could drive turbines and make electricity. Wave action is also another natural force to move turbines.
Northern Baja with its gulf tides, ocean waves, and geothermal zones could be a major exporter of clean, renewable energy!
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BajaRat
Super Nomad
Posts: 1303
Registered: 3-2-2010
Location: SW Four Corners / Bahia Asuncion BCS
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Mood: Ready for some salt water with my Tecate
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| Quote: Originally posted by David K | In the northern gulf (or anywhere for that matter), the technology of tidal turbines would be effective... the natural flow of water coming in and
going out of bays or inlets could drive turbines and make electricity. Wave action is also another natural force to move turbines.
Northern Baja with its gulf tides, ocean waves, and geothermal zones could be a major exporter of clean, renewable energy! |
The stars must have aligned, I agree with you on this one David 
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rts551
Elite Nomad
Posts: 6700
Registered: 9-5-2003
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| Quote: Originally posted by BajaRat | | Quote: Originally posted by David K | In the northern gulf (or anywhere for that matter), the technology of tidal turbines would be effective... the natural flow of water coming in and
going out of bays or inlets could drive turbines and make electricity. Wave action is also another natural force to move turbines.
Northern Baja with its gulf tides, ocean waves, and geothermal zones could be a major exporter of clean, renewable energy! |
The stars must have aligned, I agree with you on this one David
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Looks like he is finally seeing the light  and "man" has to do something.
[Edited on 7-12-2015 by rts551]
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surfhat
Senior Nomad
Posts: 581
Registered: 6-4-2012
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Back in the 80's, Geo magazine, I believe, had a description of using the Gulf Stream current to produce unlimited electricity by a similar means as
you have suggested here with the northern Sea of Cortez with their extreme tides.
I wonder what happened to that brilliant idea? Collusion with energy producing companies and lobbyists seems to have killed that avenue. Tucker car
designs comes to mind, as all the car companies aligned to put them out of business.
Truly sustainable energy producers have a mountain to climb. We should all applaud their efforts to help our mother earth survive mans selfish folly.
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