Turbidity is a measurement of suspended solids or particles in water, expressed in Nephelometric Turbidity Units (NTU). Turbidity can be measured continuously as a general water quality indicator.
WHY IS IT IMPORTANT?
Turbidity is an important parameter to monitor for three reasons: aesthetics, filterability and disinfection. Drinking water is expected to be turbidity free as the general public associates turbidity with contamination and pollution. Water filtration is negatively impacted by increasing turbidity levels as filter run times get shortened in addition to final quality of filtered water being decreased. Disinfection is another water treatment process that is negatively impacted by high turbidity. Effective disinfection requires full contact between the disinfecting agent and the target organisms. Turbidity may create a higher demand for the disinfectant, and in some cases fully or partially protecting the microorganisms from coming into contact with the disinfectant, which results in incomplete disinfection. Turbidity is also used in determining the coagulant dose necessary to meet process effluent targets. The current standard method for measurement of turbidity relies on measuring the intensity of scattered light at right angles to the path of the incident light. The measurement unit is designated as NTU for nephelometric turbidity units.
Turbidity is caused by a wide variety of suspended materials that range in size from colloidal to coarse particles. In addition, materials contributing to turbidity range from purely inorganic substances to ones that are largely organic in nature.
ONLINE TURBIDITY SENSOR
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- Source Water Monitoring & Protection
- Coagulation Optimization
- Contaminant Removal Efficiency
- DBP Formation Potential
- Smart Water Networks
- Process Water Control
- Cooling Water Contamination
- Boiler Feedwater Impurities
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