Suspended solids & SVI analysis.Discover S3A
Trihalomethane (THM) formation potential is typically measured in a laboratory by dosing samples with chlorine under controlled conditions (pH, temperature, incubation time and residual-free chlorine) and then analyzing the resulting trihalomethanes produced by purge and trap/gas chromatography.
This is a time consuming, technically complex method which doesn’t enable real time control.
The alternative approach is to utilise online UV-Vis spectroscopy to characterise natural organic material (NOM) on the incoming raw water in real time.
With this approach you can develop UV-Vis parameters for all the NOM fractions and have a real time understanding of coagulable and non-coaguable dissolved organic carbon (DOC).
By understanding the spectral changes following chlorine addition to raw water on the THM formation, an estimated THMFP parameter on raw water can be generated. Such an approach is used online at a number of water treatment plants for full online control strategies.
Feed forward and feedback coagulation control systems for optimising coagulant dosing and estimating raw water THM formation potential.
In 2010, PMA introduced the patented Compass coagulation control system from Lutra to the UK water industry. In the first installations, an online THM formation potential parameter was developed.
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.
Achieving reliable automatic coagulation control is something many water companies struggle to maintain in highly variable (flashy) catchment areas. These areas can be at one time or another; typically low in particulates with a moderate to high natural organic matter (NOM) content or vice versa.
Speak to the PMA team about your instruments, reagents or service requirements. Tell us what you need, and we’ll help you find the right next step.
Trusted by our clients
Share your requirements below. All fields are required.
Your enquiry goes directly to our team. Your details are used to respond to you, and you won’t be added to a marketing database. Read our privacy policy.
To find out more about our range of sensors, request a callback or ask a technical question, our expert staff are always on hand. Our focus has always been to deliver world-class customer service.
Get startedWe use optional Google Analytics cookies to understand which pages are useful. Analytics stays off unless you accept. Read our privacy statement.