The Langelier and Ryznar ...
Published by Stewart Shipard, Owner Manager at SLS Technology Pty Ltd - a Water Industry company
The Langelier and Ryznar index's are both well accepted as useful primary prediction tools for likelihood of corrosion and scale formation but that is all they can be as a simple equation can't cover every possible water environment. For example, the equations don't incorporate biological corrosion factors, are based on pure iron and no ones builds a water tank or pipe out of pure iron! and they don't incorporate ORP.
In addition, there can be different causes of severe corrosion in a water plant, especially an SWRO, a significant number of which the water chemistry is not the cause. With corrosion in and out of tanks there is high likelihood you need the services of both a competent corrosion consultant and a water treatment specialist process engineer.
I happen to know such people if your company is serious about addressing the adverse corrosion effects.
1 Comment
Thankyou Stewart for the information
Published by Chris Riley, Water/Waste water treatment operator/Plumber at Broadspectrum