POWER August 2016 - 50

WATER
1. Exchange services. Demineralization removes dissolved inorganics through the use of
an ion-exchange process. Feedwater is passed through tanks containing specially manufactured
resin beads, which attract and remove the dissolved minerals. Courtesy: MPW Industrial Services
than expected, which is not uncommon.
Gathering historical data for the supply
water reveals trends in the amount of
deviation from normal and the length of
time before it reverts to the norm. Rainfall,
seasons, and other weather conditions all
influence turbidity.
Engineers can also check with the local
municipal water authority for analytics if the
agency uses the same feedwater.
Finally, it's a good idea to check with
neighboring industrial facilities that use the
same feedwater in their processes. Assuming
they're not competitors, they might be willing
to share their data.
Look Beyond the Lab
Laboratory data collected from feedwater
samples is important, but it is by no means
the only source of information that can assist
with developing a purification process.
For example, does the plant have any analytics
on the feedwater based on the operations
of its permanent system on site? These can
shed light on seasonal variations, which can
be helpful if the commissioning takes longer
In the end, the better the quantity and
quality of data, the more effectively the water
purifier can minimize costs and meet requirements
during commissioning. Any misstep
in the chemical evaluation of the feedwater,
however, can have dramatic impacts on the
purification process. If, for example, the purified
water doesn't meet requirements, then
the water firm might need to bring additional
resources on site, which could consume valuable
time and delay the commissioning.
Consider All Your Options
In virtually every feedwater scenario, there is
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50
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POWER August 2016

Table of Contents for the Digital Edition of POWER August 2016

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