GineersNow Engineering Magazine September 2016 Issue No 007
GineersNow Engineering Magazine September 2016 Issue No 007 Veolia Water Technologies: Sustainable water champion. Exclusive: Water for people, Cranfield University, Imagine H2O, WaterAid, Aviscus. Special Feature Stories: Desalination, Nanofiltration, Ultrafiltration, Reverse Osmosis, Water Treatment, Pipes, Pumps, HVACR, Oil & Gas, Construction, Heavy Equipment, Machinery, Tools, Civil Engineering, Mechanical, Electrical, Plumbing, MEP, Water, Wastewater, Renewables, Energy, Petroleum. Country Focus: Brazil, United States, UAE, Saudi Arabia, Qatar, Bahrain, Kuwait, Oman, United Kingdom, Singapore, Hong Kong, Philippines, Malaysia, Indonesia, India, Australia More engineering stories at https://www.gineersnow.com/topics/magazines
GineersNow Engineering Magazine September 2016 Issue No 007
Veolia Water Technologies: Sustainable water champion.
Exclusive: Water for people, Cranfield University, Imagine H2O, WaterAid, Aviscus.
Special Feature Stories: Desalination, Nanofiltration, Ultrafiltration, Reverse Osmosis, Water Treatment, Pipes, Pumps, HVACR, Oil & Gas, Construction, Heavy Equipment, Machinery, Tools, Civil Engineering, Mechanical, Electrical, Plumbing, MEP, Water, Wastewater, Renewables, Energy, Petroleum.
Country Focus: Brazil, United States, UAE, Saudi Arabia, Qatar, Bahrain, Kuwait, Oman, United Kingdom, Singapore, Hong Kong, Philippines, Malaysia, Indonesia, India, Australia
More engineering stories at https://www.gineersnow.com/topics/magazines
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EXPLAINED: THE DIFFERENCE BETWEEN<br />
DISTILLED, MINERAL AND PURIFIED<br />
WATER<br />
There will always be that moment in<br />
the grocery store where one stands<br />
in front of the bottled water station<br />
or shelf to choose which one to buy.<br />
You are confronted with many types<br />
of bottled water – distilled, mineral<br />
and purified – and in different brands.<br />
But what exactly is the difference<br />
between the three?<br />
Distilled Water<br />
Water that is a product of distillation<br />
is called distilled water, of course.<br />
Essentially, the process of distillation<br />
is just boiling pure water to remove<br />
the contaminants or solid residues<br />
like inorganic minerals, metals,<br />
etc. Such contaminants have high<br />
melting points and even higher<br />
boiling points. The water, along with<br />
its contaminants, is boiled and the<br />
pure water turns into steam which<br />
is captured and cooled to become<br />
distilled water. What’s left after<br />
boiling are the contaminants already<br />
separated from the water.<br />
Purified Water<br />
As the name suggests, purified water<br />
is the type of water that is in its<br />
purest form. It is often confused with<br />
distilled water but the truth is that<br />
this water undergoes more processes<br />
like deionization and reverse osmosis<br />
to reduce impurities to extremely low<br />
levels. The impurity load of dissolved<br />
solids in purified water cannot exceed<br />
10 parts per million.<br />
Mineral Water<br />
This type of water also bears the clues<br />
in its name. Mineral water is water<br />
from a mineral spring that contains<br />
various minerals, such as salts and<br />
sulfur compounds. It includes calcium,<br />
magnesium, sodium, potassium,<br />
chloride, sulphate, fluoride and nitrate<br />
that are beneficial to health at certain<br />
amounts. But the minerals can also<br />
be added artificially. Mineral water<br />
may be effervescent, or sparkling, due<br />
to contained gases.<br />
Which one would you grab the next<br />
time you stand in front of the sea of<br />
bottled water?<br />
Photo by LiveStrong<br />
SEPTEMBER <strong>2016</strong><br />
Clean Water Technologies<br />
43
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