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Subject:
Water quality
Category: Science > Chemistry Asked by: steelcowboy-ga List Price: $2.00 |
Posted:
17 Jul 2004 13:55 PDT
Expires: 16 Aug 2004 13:55 PDT Question ID: 375488 |
Where does the cleanest, purest water come from in everyday life? .Is it from a condenser at a powerplant? |
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There is no answer at this time. |
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Subject:
Re: Water quality
From: dr_bob-ga on 17 Jul 2004 20:09 PDT |
What do you mean by everyday life? Are you referring to drinking water? The purest water, that is just H20 is usually prepared by removing virtually all impurities using a combination of RO, ion exchange type resin, electrochemical, and organic processing techniques. Depending on the condensation process organic impurities from the air will also contaminate the water. The cleanest public drinking water has all kinds of stuff in it. Chugs. |
Subject:
Re: Water quality
From: steelcowboy-ga on 18 Jul 2004 06:12 PDT |
In everday life I mean here in the U.S as opposed to Antartica.I think the cleanest and purest water would be the condensate makeup water.Its a question for a powerplant class. |
Subject:
Re: Water quality
From: neilzero-ga on 18 Jul 2004 09:11 PDT |
Because of chemicals added on purpose and inadvertantly at typically power plants, condensate water is not safe for humans to drink. Where very safe water is desired, several purifing processes preceed multiple distilation including vacuum distilalation and discarding both the first and the last vapors that come off. Fortunately human immune systems can solve most contamination problems as really safe water is rarely available at any price, inspite of many claims to the contrary. At typical power plants the condensate water is re-purified by ion exchange before it is returned to the boiler, as condensate water has oxygen, silica etc which erodes the turbine. Humans can tolerate large amounts of oxygen and silica, but some of the ect. is hazardous. Neil |
Subject:
Re: Water quality
From: touf-ga on 20 Jul 2004 14:20 PDT |
deionized water is pretty darn clean, and probably the cleanest you'd find here in the us. |
Subject:
Re: Water quality
From: biogeochem-ga on 23 Jul 2004 06:44 PDT |
It's important to remember that in Antarctica water may contain higher concentrations of some pollutants than mid-latitude locations, as gaseous pollutants tend to collect at the poles. Concentrations of PCBs (Polychlorinated-biphenyls, used as flame retardants), for example, are higher at the north pole than at any almost any other location (industrial sites excluded) on Earth. A source I have found of use in the past is the University of Portsmouth in southern England (URL - www.civil.port.ac.uk/enviro/ see 'Treatment of Industrial Wastewaters'). You may also find material of use within www.cranfield.ac.uk . |
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