aeacfm
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sulfate removal
simply,
sulfate is a vapid anion found in waste water , sea water , other water suppliers .
i was asking if there economic ways to eliminate sulfate from these water suppliers ? "economic "?
[Edited on 7-11-2010 by aeacfm]
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watson.fawkes
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Treat
with quicklime (CaO). Precipitate gypsum (CaSO4). Now you've converted a sulfate problem into a filtration problem. And possibly also a Ca(2+) ion
removal problem, unless you're carefully with measurements.
It would help a lot to know what the application is and what volumes and rates we're talking about.
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aeacfm
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thanks for your ultra fast reply
but the problem here is exactly you asked for we daily use 660,000 barrel of water !!!!!!
is this would be economic
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bbartlog
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Another issue, depending on just how sulfate-free you want your water, is that CaSO4 is not really all that insoluble; about two and a half grams will
dissolve in a liter of water at room temperature. If you're trying to remediate drinking water (for example), where you might start with sulfate
levels on the order of 1000mg/liter and have the goal of reducing said levels by 95%, then calcium won't help you.
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aeacfm
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starting from 2500 to 2800 ppm , if i want it below 800 ppm ,so??????
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ScienceSquirrel
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If you are using 660,000 barrels of water per day then you should be looking at buying in a professional solution rather than trawling an amateur
chemistry forum for ideas.
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not_important
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For brakish water, less salty than seawater, electrodialysis works well. Chemical means tend to be less than satifactory at low concentrations.
And seconding what ScienceSquirrel
said, unleess you're dropping some cash on the board's operator.
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aeacfm
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Quote: Originally posted by ScienceSquirrel  | If you are using 660,000 barrels of water per day then you should be looking at buying in a professional solution rather than trawling an amateur
chemistry forum for ideas.
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may be some one deal with it before !!! why not ?
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blogfast25
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Industrial solutions often come from surprising and proprietary angles: the result of decades of know-how development. Here you'll get some generic
ideas and perhaps some thought provoking stuff that remains untested. It's a question of not reinventing the wheel, when possibly much is at stake as
in your case...
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ScienceSquirrel
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There are a lot of things to consider when it comes to removing sulphate from 660,000 barrels of water a day.
Do you want to remove the ions completely or do you not mind if they are replaced with chloride or something else?
What do you want to do with the water; is it for industrial use, irrigation or will it be pumped in to the domestic supply?
There are plenty of solutions including reverse osmosis and ion exchange but any solution will depend on a lot of factors and cost millions of pounds
for a big plant.
The pumps alone will cost a fortune and you will probably need a small power station to run the beast!
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aeacfm
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for industrial use in oil field , i dont care abut complete removing , replacing with other ion is good
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ScienceSquirrel
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Basically you would be looking at something like this.
http://www.veoliawaterst.com/fluentlines/en/sulphate_removal...
I am sure those nice people would sell you what you want! :-)
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aeacfm
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thanks
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