Hi Guru Das Saha. Thanks for your help. The potable water tanks that are corroding are the storage for each of four sites i deliver potable water to. These tanks also have a Chlorine dosing system incorporated. I cannot allow the water to be stored at a pH of 9 due to the effect on Chlorine.
Published by Chris Riley, Water/Waste water treatment operator/Plumber at Broadspectrum
Hi Guru Das Saha.
Thanks for your help.
The potable water tanks that are corroding are the storage for each of four sites i deliver potable water to. These tanks also have a Chlorine dosing system incorporated. I cannot allow the water to be stored at a pH of 9 due to the effect on Chlorine.
1 Comment
The pH of 9 of SWRO is not because of high alkalinity or other alkaline ions it is high because it is RO water and ionic strength is less. Acid dosing to reduce pH may make the water more corrosive if the control is proper which is likely. Chlorine will be equally effective if dosed into this water at pH 9, as pH will come down to some extent during chlorination. Try implementing my suggestions as it is which can be subsequently standardised when required.
Published by Guru Das Saha