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WHAT QUALITY OF ICE CUBES WILL AN R.O. SYSTEM
PRODUCE?
Our
H2RO SYSTEM will make good tasting ice cubes since it removes
most of the contaminants in the water. No
more grit! (Note: you won't be able to tell the purity of the ice cubes by their
appearance. If your freezer is very cold, your ice cubes will freeze rapidly. Freezing starts
on all surfaces and air bubbles are
trapped in the middle,
so the cubes do not look clear. However, if your freezer is not quite so cold, your ice cubes
will freeze slowly and allow the air to escape.)
What
is hard water?
Hard water is the most common problem
found in the average home. Hard water is water that contains dissolved
hardness minerals above 1 GPG.
What
are hardness minerals?
Calcium,
manganese and magnesium are the most common.
How
do you Measure Hardness?
Parts
per million or grains per gallon are the most common. One part per
million (PPM) is just what it says: out of one million units, one unit.
Grains, or grains per gallon (GPG) is a weight measurement taken from
the Egyptians; one dry grain of wheat, or about 1/7000 of a pound. It
takes 17.1 PPM to equal 1 GPG.
What
is the best water for Coffee?
Well, that a good question! After
visiting with many coffee people, we suggest the following as a basis
for recommending the "perfect water" for coffee.
1. All oxidants removed. (Chlorine or other such
"sanitizers".)
2. All organics removed. (You know, dead fish, tadpoles, THM's,
insecticides, pesticides, etc.)
3. TDS (total dissolved solids) from 60 to 100 ppm (parts per million)
4. Hardness of about 3-4 grains per gallon. (51.3 to 68.4 ppm)
5. Low sodium water, i.e., less than 10 mg/L.
6. pH depends on the Bean you are using, plus the method of extraction.
7. Iron, Manganese and copper gone, or less than 0.02 ppm
Are
all RO systems the same?
Conceptually, all Reverse Osmosis
systems are the same. They utilize a pressure vessel, a membrane, and a
pump. They differ greatly in the quality of engineering, materials of
construction, and from application to application, depending on pressure
and material to fluid compatibility. Control methods of the fluid and
electrical cut outs also vary greatly with the application
What's
the difference between RO, DI, & Distillation?
All
three processes can achieve approximately the same results, but all in a
different manner. Deionization removes all ionized minerals and salts
(both organic and inorganic) from a solution by a two-phase ion exchange
procedure:, First positively-charged ions are removed by a cation
exchange resin in exchange for a chemically equivalent amount of
hydrogen ions. Second, an anion exchange resin removes
negatively-charged ions for a chemically equivalent amount of hydroxide
ions. The hydrogen and hydroxide ions introduced in this process unite
to form water molecules. This process is also called demineralization by
ion exchange.
Distillation is the process of
separating the water from the organic and inorganic contaminants through
a combination of evaporation (or vaporization), cooling, and
condensation. Distilled grade water is generally less than 5.0 ppm TDS.
As explained earlier, RO
separates water or a fluid from its contaminants through the use of a
semi-permeable membrane. Depending upon the rejection characteristics of
the membrane, larger or smaller molecules are rejected. RO not only
removes ionized salts, but colloids, and organic molecules down to a
molecular weight of 100 as well. RO is considered to be the most
cost-effective method of the three. Whereas RO cannot usually achieve
DI-quality when ultrapure water quality is required, it can also be a
cost effective pre-treatment for DI.
Is
RO the best method of fluid purification?
In many cases yes. It all comes down to your fluid purity objectives. Reverse
osmosis and other forms of membrane technology such as NANOFILTRATION and
ULTRAFILTRATION are not the only forms of fluid purification. Many facilities
use Deionization. For waste reduction, evaporation is also popular. However, as
mentioned before, membrane separation is usually the most cost effective.
Can I use membrane technology for boiler treatment?
Boiler
treatment is a natural for reverse osmosis. Almost all electrical power
plants use reverse osmosis as a main stay in front of the turbines.
Chemical water treatment costs can decrease by more than 90 % when a
switchover is made from conventional demineralization to membrane
technology for boiler water treatment. Tremendous savings in fuel costs
are also seen as blowdown is now greatly decreased.
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