Wastewater Quality Monitoring: On-Line/On-Site Measurement

Abstract

Sampling and laboratory analysis are not well adapted to wastewater quality monitoring in a process control or hazards prevention context, for which on-line/on-site measurement is preferable. Before considering the implementation and constraints of on-line systems, the reasons for and ways of monitoring are discussed. The main existing and up-and-coming solutions are then presented, showing that with respect to the number of parameters and substances to be monitored, for regulation purposes for example, only a few of them are measurable with on-line devices.