Interview with Ben Moore
- as published in Chemical Engineering
Recognizing the systematic approach to cleaning up water for reuse, as
well as treating river or alternative water sources for use, another player in
the water treatment industry has also tweaked existing technologies to provide
“As we look to alternative water sources, such as river
water and resource recovery, we, as treatment providers have invested in
research to develop technologies that are more efficient and robust so that our
users can source alternative sources and reuse effluent to improve their own
efficiencies,” says Ben Moore, business development manager with Veolia Water
Technologies (High Wycombe, UK; veoliawatertechnologies.co.uk).
As a result, the company has made
improvements to many of its traditional treatment methods. For example, Veolia
offers Actiflo, 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.
“On the back of that, our Rapide Strata twin bed
deionizers help produce high-purity water, while offering savings of up to 40%
on running and effluent costs compared to conventional ion exchange systems.
The improved technology offers regeneration in 30 to 45 minutes, minimizes
downtime, enhances bacterial control and improves chemical usage efficiencies,”
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 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 pharmaceutical 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.