Jebbles
Chemical
- Nov 3, 2020
- 1
I've just recently started at a new company.
One of my first activities I installed a bunch of monitoring instruments on the boiler system (I have no experience with boilers) and requested an external team to come do water quality benchmark testing.
Both TDS and Chlorides are VERY high and indicate to me that blowdown is not being done properly/frequently.
the Hardness has historically been VERY high. From a quick search online the boiler water itself should ideally sit between 0-7ppm.
There is an ion-exchange treatment unit, it does seem to be functioning (hardness drops between raw water->soft-water->feed-water) but perhaps its malfunctioning/undersized?
pH control has been maintained well between 10.0 and 12.5![[smile] [smile] [smile]](/data/assets/smilies/smile.gif)
Another issue is the dissolved O2...The system has no pre-heater and no de-aerator, they only do chemical tanning dosing. Is it incorrect to assume that if the tannin/sulphites level from a sample within the boiler is within the recommended range that the dissolved O2 would likewise be acceptable? We do not have a means of measuring dissolved O2 directly.
One of my first activities I installed a bunch of monitoring instruments on the boiler system (I have no experience with boilers) and requested an external team to come do water quality benchmark testing.
Both TDS and Chlorides are VERY high and indicate to me that blowdown is not being done properly/frequently.

the Hardness has historically been VERY high. From a quick search online the boiler water itself should ideally sit between 0-7ppm.
There is an ion-exchange treatment unit, it does seem to be functioning (hardness drops between raw water->soft-water->feed-water) but perhaps its malfunctioning/undersized?

pH control has been maintained well between 10.0 and 12.5
![[smile] [smile] [smile]](/data/assets/smilies/smile.gif)
Another issue is the dissolved O2...The system has no pre-heater and no de-aerator, they only do chemical tanning dosing. Is it incorrect to assume that if the tannin/sulphites level from a sample within the boiler is within the recommended range that the dissolved O2 would likewise be acceptable? We do not have a means of measuring dissolved O2 directly.
