Zeta Potential Measurement Solutions for the Water Industry
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Malvern Instruments provides water treatment solutions that analyse the qualities of dispersed systems, including industrial bulk powders, high-concentration slurries, and aerosols and sprays.
Zeta potential measurement solutions for water treatment
Malvern offers automated, easy-to-use online and laboratory systems to measure the zeta potential of water samples.
These systems can be used to perform various tasks, such as:
- Help maintain stable plant operation to required standards by enabling an effective, timely response to changes in water quality
- Evaluate how much coagulant is required to optimise charge neutralisation
- Eliminate coagulant over-dosing, reducing coagulant and sludge disposal costs
Water filtration monitoring
Pre-treated water typically contains organic, inorganic and bacterial contaminants.
Treatment begins with clarification, consisting of a coagulation, sedimentation and filtration process, which removes suspended particulates.
Stability of floc formation is critical during this process and it is controlled by neutralizing the electrostatic charge of various contaminants by using oppositely charged coagulants.
One of the known parameters that affect stability, zeta potential measures the level of electrostatic repulsion or charge between particles. It provides further details on the causes of aggregation, dispersion or flocculation.
Monitoring change with zeta potential measurements in water treatments helps lower the cost of chemical additives by optimising the dosage.
Laboratory technology for characterising particle size and zeta potential
The Malvern Zetasizer Nano product range comprises high-performance and entry level systems that can combine various components, including:
- Analysers: particle size, zeta potential or molecular weight
- Protein mobility and microrheology measurements
Particles sizes less than a nanometer to several microns, as well as their zeta potential, can be analysed.
Online monitoring of coagulant process and measuring zeta potential
The fully automated Zetasizer WT system delivers lab quality online zeta potential measurements.
This enables efficient charge neutralisation and real-time monitoring of flocculation process performance. This information allows process operators to react to changes in raw water before they cause filtration issues, while reducing potential process upsets and chemical coagulant use.
Based in the UK, Malvern Instruments has subsidiaries in major European markets.
The company also has offices in China, Japan, Korea, Mexico and North America, as well as a joint venture in India, and a worldwide network of distributors and application laboratories.
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How good is on-line zeta-potential measurement in water treatment?
Available White Papers
Researching Nanobubble Application and Characterisation via Nanoparticle Tracking Analysis Following earlier scepticism about their actual existence, the reality of surface nanobubbles is becoming fairly well established after investigation by a number of groups, while confirmation of bulk nanobubbles in solution and their characterization has recently seen more regular publication.
An Introduction to Rheology Rheometry refers to the experimental technique used to determine the rheological properties of materials; rheology being defined as the study of the flow and deformation of matter which describes the interrelation between force, deformation and time.
The Role of Zeta Potential in Water Treatment Process Control Physical processes such as sedimentation, flotation and filtration remain at the heart of most process trains for the treatment of water and wastewater flows.
Water Treatment Solutions For the water treatment industry, quality is non-negotiable. Consistently demonstrating that regulatory standards are met, while at the same time driving down treatment costs, provides the stimulus for continuous process improvement.
Monitoring Microfiltration Processes for Water Treatment Quantifying Nanoparticle Concentration and Size to Optimize Filtration Processes.