Zeta potential or particle charge is the driving force responsible for the stability and flocculation of particles in a water treatment plant. Neutralisation of this charge by oppositely charged coagulants is key for formation of stable, easily filterable floc. The difficulty faced by water treatment plants is that decisions regarding the required dose of coagulant are often based on very rudimentary measurements and tend to be operator dependent, resulting in frequent over-dosing and potential for plant upsets.
Measurement of zeta potential by electrophoretic mobility has been used as a laboratory method for many years and has proven to be an accurate, reliable and robust means of understanding the dosing demand. Now this technology moves on-line and delivers previously unattainable, continuous process information. Absolute and precise charge results are reported in millivolts (mV) and enable clear target and operational range setting for confident coagulant control. The user-independent Zetasizer WT system has proven to be a robust and practical tool for optimising chemical dosing during day-to-day plant operation, whilst providing real-time responses to sudden changes in raw water quality. The technology behind the system measures zeta potential by electrophoretic mobility of particles in dispersion or molecules in solution. This well-known laboratory-based measurement technique is used in numerous industries for quality control and research purposes.
Measurement of zeta potential by electrophoretic mobility has been used as a laboratory method for many years and has proven to be an accurate, reliable and robust means of understanding the dosing demand. Now this technology moves on-line and delivers previously unattainable, continuous process information. Absolute and precise charge results are reported in millivolts (mV) and enable clear target and operational range setting for confident coagulant control. The user-independent Zetasizer WT system has proven to be a robust and practical tool for optimising chemical dosing during day-to-day plant operation, whilst providing real-time responses to sudden changes in raw water quality. The technology behind the system measures zeta potential by electrophoretic mobility of particles in dispersion or molecules in solution. This well-known laboratory-based measurement technique is used in numerous industries for quality control and research purposes.
