Malvern Zetasizer WT

The Malvern Zetasizer WT is an automated on-line zeta potential analyser. It’s designed for water treatment plants to enable real-time monitoring of the flocculation process and charge neutralisation.

Malvern Zetasizer WT

The Malvern Zetasizer WT is an automated on-line zeta potential analyser. It’s designed for water treatment plants to enable real-time monitoring of the flocculation process and charge neutralisation.

Manufacturer Malvern Panalytical
Product SeriesMalvern Zetasizer
Measurement principleElectrophoretic Light Scattering
ApplicationZeta Potential
Sample typeIn process water treatment
Particle size range3.8nm to 100µm
Range of zeta potential measurement+/- 500 mV
Output frequency3 minutes typical, programmable
Operation24hr continuous

Product Overview

The Malvern Zetasizer WT is an automated on-line zeta potential analyser. It’s designed for water treatment plants to enable real-time monitoring of the flocculation process and charge neutralisation

The Zetasizer WT connects to a sample stream after coagulants have been mixed into the water. The sample is pumped through the analyser`s flow cell where zeta potential measurements are made. The measured sample is then replaced with a fresh sample in a continuous, automatic cycle. Accurate results in [mV] provide the dosing control to form a stable floc and reduce chemical use.

Automation and analysis is controlled by an on-board computer. Zeta potential measurements are displayed on a local HMI screen and exported into plant SCADA. The results are used to adjust coagulant dose to keep the zeta potential in a pre-determined range – typically between zero and a slight negative charge. Grab samples from other areas in the process can also be measured so that it effectively doubles as a laboratory system.

  • Benefits
  • Applications

Benefits

  • Real-time monitoring of the flocculation process
  • Provides dosing control to reduce chemical use.
  • Doubles as a laboratory system.
  • Lab quality results
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Applications

  • Surfactant micelle characterisation
  • Measuring Zeta Potential in Water Treatment Process Control
  • Metal colloid preparation, application and characterisation
  • Suspension stability analysis
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