The use of ozone gas in water purification has long been an
effective
means of eliminating microorganisms, organic compounds and metals to
produce
potable drinking water. Making the process more effective is the
utilization
of 95+% pure oxygen as an air source, instead of the traditional
ambient
air-feed systems.
German companies Mahler AGS and WEDECO Group have teamed up to
combine a
WEDECO ozone generator with a Mahler AGS OXYSWING® PSA Oxygen
Generating
Plant as its source of oxygen. The use of on-site generated oxygen has
been
successfully installed in water treatment plants worldwide, resulting
in
many benefits not otherwise possible with standard air-feed
technology.
Utilizing on-site generated oxygen as an ozone source allows the
user to
achieve a higher level of ozone concentration. With traditional methods
(using ambient air for ozone generation), the maximum achievable
concentration typically is 4 percent ozone gas. By utilizing the more
modern
technology of feeding oxygen into the ozone generator, concentrations
of 14
percent ozone (and higher) can be achieved in this process.
A water treatment plant that employs such an oxygen-based system can
expect to increase its potable water production significantly with the
same
equipment due to the higher solubility of ozone in water. Also, the
quality
of the finished product will be increased, while maintenance costs will
decrease.
An ozone-based purification system also offers several advantages
compared to other drinking water purifications. Cleaner water is
produced,
as the microorganism kill-rate is greater than 99.9 percent; the
dissolved
iron and manganese are converted into the insoluble oxides which can be
removed by sedimentation and/or filtration; organic compounds which can
cause discolor or unpleasant odors are eliminated; less pollution is
produced in the purification process; and the water tastes better as
ozone
is neutral in taste.
Mahler AGS is a subsidiary of the Messer Group, which also owns an
equity
position in WEDECO.
For further information, visit www.mahler-ags.com.
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