TOC is a measure of the total amount of carbon present in a water sample.
High TOC in raw water comes from decaying natural organic matter (NOM) as well as synthetic sources.
Before raw water is treated TOC provides an estimate of the amount of NOM in it.
In treated water, TOC can be a valuable measurement in estimating the likelihood of chlorinated disinfection byproducts (DBPs) forming.
It is a common measurement in water treatment plants as it It is traditionally determined in a laboratory which is a time consuming and skilled procedure. By utilising UV-Vis spectroscopy, TOC can be estimated in real time allowing process control.
In wastewater treatment works, TOC can be a useful parameter to monitor on the inlet to give a better understanding of incoming loads.

TOC UV-Absorption Photometer for Multi-Parameter Water Quality Analysis
RAS are finely balanced ecosystems, requiring careful control of the water quality to maximise yields and avoid a catastrophic loss of stock. Utilising simple pH and dissolved oxygen(DO) control sometimes isn’t sufficient.
Monitoring of drinking water sources for contaminants requires an advanced event detection system based on UV-Vis spectroscopy and not just parameters. Pollution into groundwater can take many forms and by using event detection software, a flexible and intelligent system can provide the protection that is required.
To understand carbon migration through the watercourses of the UK, several teams of researchers have received NERC (Natural Environment Research Council) funding and written up their findings in internationally recognised scientific journals. All this work has been aimed at understanding the loss of carbon from the land to the sea and emphasising the importance the monitoring water quality in real time, using state of the art technology.
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