Online automatic coagulation control systems utilising UV-Vis spectroscopy and can be configured to output a HAA5 formation potential parameter based on NOM characterisation of the raw water entering the drinking water treatment works.
By measuring formation potential in the raw water you can identify the level of the source risk, and it tells you how much treatment you need. By also measuring on the filtered water before chlorination you can show in real time what your removal of the THM and HAA pre-cursors are and you can optimise the plant to remove these and not just generic NOM.

An online automatic coagulation control system to minimise filtered water turbidity breakthrough, ensure maximum organics removal and optimise coagulant dosing

A fully submersible online UV-Vis spectrophotometer for measuring across the UV-Visible spectrum
In 2010, PMA introduced the patented Compass coagulation control system from Lutra to the UK water industry
Achieving reliable automatic coagulation control is something many water companies struggle to maintain in highly variable (flashy) catchment areas.
Compass EOR (enhanced organics removal) is a coagulation control system which characterises NOM and automatically ensures the right amount of coagulant is being dosed to remove the organics in the raw water entering a water treatment works.
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