EDITOR’S COMMENT
ADVERTISEMENT FEATURE
ABB expands water analyzer range
Let’s train for
with new colorimetric monitors
The first three new products in To maximize the measuring
the ABB Aztec 600 range of range, the Aztec 600 features
online analytical instruments automatic sample dilution. This
flood control
for potable water treatment are function allows the instrument to
now available from ABB. Built be set to automatically adjust to
on ABB’s new analytical instru- monitor higher levels of samples
ment platform, the ABB Aztec by using deionised water to dilute
600 Aluminium, Iron and the sample.
Manganese colorimetric moni-
T
he UK’s population increased approach to this issue. Sustainable
tors offer enhanced accuracy The analyzers are available in sin-
by 408,000 in 2008 – the Urban Drainage Systems (SUDS)
with simple operation and gle or multi-stream configura-
maintenance for potable water tions, enabling operators to use
biggest increase for almost are the obvious answer but the
treatment applications. just one device to monitor up to
50 years, according to the Office for challenge for our industry is to be in
three streams sequentially all
with current loop, Ethernet or
National Statistics. a position to react to rapidly
Profibus outputs.
This took the total number of increasing demand for these
The Aztec 600 analyzers are also
people living in the UK past 61 systems. SUDS need to be
simple to maintain. The piston
million for the first time. incorporated into new
and optical sensor use air to mix
the sample and reagents, elimi-
It is clear that population developments and also, where
nating the cost and maintenance
increases on this scale will continue appropriate, retrofitted into existing
associated with mechanical or
electrical stirring systems. The
to create significant challenges for developments. However, talk of
inherent product design and
the water industry. Of these skills shortages underlines the
auto-calibrating features means
that maintenance is just required
challenges flooding created by the need for adequate in-depth training
annually, compared to every 3
vast amounts of urban development in this area.
months with some units.
necessary to deal with this ever It’s good to see that this issue is
A key benefit of the Aztec 600 is
expanding population is a key being addressed by CIRIA which has
its ease of operation. Front-
mounted pushbuttons allow easy
concern. The question is, how do recently introduced two courses that
device interaction in a familiar
we deal with it without adversely focus on the development of SUDS.
Windows™ environment.
Operation and commissioning is
affecting the environment, and will Let’s hope that these courses prove
straightforward, with menus pre-
we have to develop new skills in to be a success and are followed by
senting options for setting and
fine-tuning parameters. Added
the process? more in related areas such
The analyzers use an LED and support is provided by an exten-
This issue of flooding is as rainwater harvesting and
detector to measure the passage sive context-sensitive on-line help
of light through a sample. A sin- feature.
magnified by a sewerage and greywater recycling.
gle precisely controlled piston
drainage system that clearly has This is another area that needs to
pump provides all the sample and Based on ABB Instrumentation’s
reagent fluid handling for meas- highly successful common opera-
difficulty in coping with peak flows be fully exploited in the effort to
urement, mixing and disposal. tor interface, the Aztec 600 colori-
after storms. A major redesign of control flooding while minimising
Measurements are taken before metric analyzers feature a full
and after colour reagents are color graphical display, allowing
Combined Sewer Outflows (CSOs) carbon emissions. Not only does
added to compensate for back- process trends to be easily viewed
is being called for by many, and it is rainwater harvesting help with urban
ground colour and turbidity. and analyzed locally. Historical
These measurements are com- logs provide operators with access
true that this will also have the flooding issues but it helps reduce
pared against the calibrated val- to alarm and audit trail data.
additional benefit of helping our per capita water usage. It is clear
ues to calculate the sample being Process data and historical logs
measured. are securely archived to a remov-
industry reach the high standards however, that a piecemeal approach
able SD card with capacity of up
required by The Water Framework will not succeed and these
The Aztec 600 Iron, Aluminium to 2 GB.
and Manganese analyzers can
Directive (WFD). techniques need to become part of
measure up to six samples per A built-in Ethernet communica-
However the industry will have to the planning requirements for all
hour. tions link with onboard web and
ftp servers enables remote moni-
achieve this while bringing carbon new developments.
Key features of the Aztec 600 toring, configuration selection,
emissions down significantly from Legislation alone will not bring
range include automatic two data and log file access to the
point calibration. This enables analyzer from a web browser.
their current levels in line with about a solution and
operators to verify analyzer per-
government expectations. Clearly comprehensive training in what are
formance against standards of a ABB Aztec 600 analyzers are
known concentration. backed up by a comprehensive
the large, resource-hungry relatively new and currently
local service and support net-
construction projects necessary to underutilised techniques is
Accuracy is further enhanced by work, offering everything from
various self-cleaning abilities to commissioning through to
replace CSOs will only increase necessary if a skills shortage is
ensure the optical cell and analyz- upgrades throughout the life of
levels of carbon, and increasingly to be avoided.
er tubing used for sample meas- the product.
■■■
urements remain free of residual
public and industry opinion is
particles between each analysis. A
For more information email:
favouring a more sustainable Nick Myall, Acting Editor
patented mechanical cleaning
moreinstrumentation@gb.abb.com
function uses the piston move-
ment to wipe the optical cell with
or call: 0870 600 6122
every measurement, particularly
ref. ‘Aztec 600’.
important when measuring raw
waters where optical contamina-
tion can be a real issue. The ana-
uo
e y
lyzers also include various userer
W
programmable automatic options
for cell rinsing and acid and alkali
e? washing. r
e
th
September 2009 Water & Wastewater Treatment 3
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