Glossary of Water and Wastewater Terms
A B C D E F G H I J K L M N O P Q R S T U V W Y Z5 random terms from our glossary
Globally Harmonized System of Classification and Labeling of Chemicals (GHS)
A worldwide initiative to promote standard criteria for classifying chemicals according to their health, physical, and environmental hazards. It uses harmonized pictograms, hazard statements, precautionary statements, and the signal words “danger” and “warning” to communicate hazard information on product labels and safety data sheets (SDSs) in a logical and comprehensive way. The primary goals of the GHS are to enhance the protection of human health and the environment by providing an internationally comprehensible system for hazard communication, to provide a recognized framework for those countries without an existing system, to reduce the need for testing and evaluation of chemicals, and to facilitate international trade in chemicals with hazards that have been properly assessed and identified on an international basis. Also see safety data sheet.
precious metal
Metal that is very valuable, such as gold or silver.
volumetric
A measurement based on the volume of some factor. Volumetric titration is a means of measuring unknown concentrations of water quality indicators in a sample by determining the volume of titrant or liquid reagent needed to complete particular reactions.
chemical precipitation
- Precipitation induced by the addition of chemicals.
- The process of softening water by the addition of lime or lime and soda ash as the precipitants.
wastewater facilities
The pipes, conduits, structures, equipment, and processes required to collect, convey, and treat domestic and industrial wastes, and discharge or reuse of the effluent and sludge.
