| Water
and Wastewater
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In
the field
of water and
wastewater
treatment,
mixing and
contacting
are important
unit operations
having a fundamental
influence
on the performance
of individual
process stages
or even on
the results
of the entire
process itself.
The ever increasing
demands on
water quality
call for continuous
improvement
of the purification
processes.
This has lead
to an increasing
number of
installations
of in-line
static mixers
for mixing
and contacting
operations
in the water
and wastewater
sector.
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| Aeration
of Water
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Potable
water entering
the distribution
network is
conditioned
with Air or
Oxygen to
increase the
Oxygen content.
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| pH
- Control and neutralization
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Neutralization
is a very
fast reaction
and is nearly
impossible
to complete
technologically
under conditions
of continuous
flow unless
the dosing
and mixing
of reactants
is close to
perfect. In
the absence
of good mixing
representative
pH measurement
and monitoring
is rendered
impossible
due to spatial
variations
of concentration.
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| Ozonization
of Water
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Potable
water is contacted
with Ozone
for disinfection
purpose. The
Air or Ozone
is dispersed
with the SMV
mixer and
absorbed in
the water.
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| Seawater
treatment
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Seawater
can be used
as a valuable
source of
potable water
providing
that a variety
of additives
is efficiently
admixed. Typically,
small amounts
of additives
have to be
admixed efficiently
into immense
volumes of
seawater under
the conditions
that allow
for sufficient
residence
time and require
large reaction
volumes.
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| Seawater
Deoxygenation
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Deoxygenation
of seawater
is effected
by intensive
mixing of
nitrogen with
water and
consequently
stripping
off the oxygen.
The objective
is to achieve
a low oxygen
content in
the water
at the outlet
of the system
prior to injecting
the process
water back
to the oil
well. In order
not to dete-riorate
the properties
of crude oil
and prevent
bacteria growth
in the well,
the oxygen
content needs
to be as low
as possible.
The process
is pat-ented
by Minox Technology
in Norway.
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