jgravelin01
06/23/2004, 03:09 PM
At the facility I work in, I have access to a practically unlimited supply of demineralized water. My main question is, would this be just as good as the RO/DI water for tank make-up?
I'll give a quick rundown of the system. We receive either non-contact cooling water from a chemical processing plant or city water as a supply for the system. The water is then passed through a mixed-media (Sand and Gravel) filter to remove suspended solids and reduce turbidity (<1). From here it is stored in a holding tank. The water is then pumped through a set of carbon filters to reduce chlorine to usually around .02ppm. This is followed by a Strong Acid Cation Vessel and a Strong Base Anion then through a Mixed Bed. The water water quality produced is the following: conductivity - .055-.065 umohs, pH 5.5-7, and we monitor silica (usually around .002 ug/l) to determine when the train is exhausted.
I was thinking about collecting some water from the drains from one of the conductivity meters, which would drain into the plant sump anyway. I could always get it from a supply valve, but I figured we are going to lose this water anyway so I would get that.
How does all this sound? By the way, this water is used as boiler make-up feedwater. I wanted to ask here before I added any and kill everything in the tank. If it sounds ok, I'll start adding a little as tank make-up at first, and if all is ok, use it for partial water changes.
Thanks for your help.
I'll give a quick rundown of the system. We receive either non-contact cooling water from a chemical processing plant or city water as a supply for the system. The water is then passed through a mixed-media (Sand and Gravel) filter to remove suspended solids and reduce turbidity (<1). From here it is stored in a holding tank. The water is then pumped through a set of carbon filters to reduce chlorine to usually around .02ppm. This is followed by a Strong Acid Cation Vessel and a Strong Base Anion then through a Mixed Bed. The water water quality produced is the following: conductivity - .055-.065 umohs, pH 5.5-7, and we monitor silica (usually around .002 ug/l) to determine when the train is exhausted.
I was thinking about collecting some water from the drains from one of the conductivity meters, which would drain into the plant sump anyway. I could always get it from a supply valve, but I figured we are going to lose this water anyway so I would get that.
How does all this sound? By the way, this water is used as boiler make-up feedwater. I wanted to ask here before I added any and kill everything in the tank. If it sounds ok, I'll start adding a little as tank make-up at first, and if all is ok, use it for partial water changes.
Thanks for your help.