Chemical Engineering May 2017 - 25

Veolia Water Technologies
atg UV Technology
FIGURE 4. Actiflo is a high rate, compact water clarification process in which water is flocculated with
microsand and polymer in a draft tube. The microsand enhances the formation of robust flocs and acts as
a ballast, significantly increasing their settling velocity. The resulting microsand ballasted flocs allow for
clarifier designs with very short retention times, high rise rates and extremely compact footprints
efficiencies, " notes Moore. He also
cites improvements to the company's
Sirion Mega RO system for industrial
process water, wastewater and water
reuse applications. It can be used
alone or in combination with processes
such as ion exchange in applications
where total dissolved solids
(TDS) concentrations in water must
be reduced. The RO membrane also
acts as a very fine filter, removing 99%
of suspended and colloidal solids,
bacterial and organic molecules. This
makes the process attractive in applications
where treated water not only
has to be low in TDS but also of high
clarity and free from bacteria, such as
in food processing and pharmaceutiFIGURE
5. Chemical free, UV disinfection has
been proven to improve well integrity and reduce
operational costs for over 20 years. Now seen by
operators as an OPEX saving technology, UV disinfection
is gaining prominence in the upstream
oil-and-gas industry
cal manufacturing. " All these systems
from deionizers to RO are becoming
more and more efficient and can reliably
recover more water to improve
efficiencies and costs, " says Moore.
Circle 11 on p. 90 or go to adlinks.chemengonline.com/66428-11
CHEMICAL ENGINEERING WWW.CHEMENGONLINE.COM MAY 2017
25

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Chemical Engineering May 2017

Table of Contents for the Digital Edition of Chemical Engineering May 2017

Contents
Chemical Engineering May 2017 - Cover1
Chemical Engineering May 2017 - Cover2
Chemical Engineering May 2017 - Contents
Chemical Engineering May 2017 - 2
Chemical Engineering May 2017 - 3
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Chemical Engineering May 2017 - Cover3
Chemical Engineering May 2017 - Cover4
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