An advanced particle characterization system from Malvern
Instruments is being used to support water treatment plant operators in
their optimization of treatment processes, and is removing the need to wait
for external laboratory results. Saving valuable resources, the Zetasizer Nano
enables operators to easily measure and track the zeta potential (charge) of
inflowing waters on site - hourly, daily, or across cycles, according to seasonal
needs. These parameters are critical to final water quality and treatment plant
efficiency.
Gregory Dehmlow, of Dehmlow Optimization in the US, is a water treatment consultant
specialising in plant optimization. Mr Dehmlow said: “The Malvern Zetasizer
Nano allows operators to perform essential analyses in house, rather than having
to rely on external laboratories. It is user friendly and treatment operators
are comfortable with the functionality and reliability of the unit.”
“In the past, instruments measuring zeta potential have been rather difficult
to work with outside of a laboratory setting. Following Malvern’s specified
procedure and because of the ease with which the unit performs time and time
again, operators readily accept this as part of their daily laboratory analysis.
It is part of their routine in optimizing and producing the highest water quality
for their customers.”
The zeta potential of influent waters received by the treatment facility affects
the formation of floc following the rapid mix or flocculation step during the
treatment process. Different chemicals are added to disinfect the raw water,
change the pH, and reduce the inherent charge to optimize coagulation. Samples
are taken following each chemical application in order to analyze the water
clarification process and track changes in parameters and optimize flocculation
conditions over time.
As a water treatment consultant, Gregory Dehmlow recommends the Zetasizer Nano
for characterizing waters in the distribution system and to help determine whether
treatment operations align with optimization goals overall.
Further information on Malvern’s Zetasizer Nano for the measurement of
particle size and zeta potential in colloids and other aqueous samples can be
found at: www.malvern.com/zetasizer
Malvern, Malvern Instruments and Zetasizer are registered trademarks of Malvern
Instruments Ltd.
Posted June 23rd, 2010