pH system - Design criteria
pH system - Design criteria
(OP)
What is the design criteria for sizing a tank that would be used for pH adjustment? Assuming continuous feed of 25 gpm, proper mixing, what would be the proper dimensions for the mixing tank?





RE: pH system - Design criteria
If you are trying to adjust a solution with a widely variable pH, you may need 2 tanks. The first tank will bring you into a range and the second tank will fine tune the pH.
If you are trying to get a very precise pH, you may need two tanks.
If you are trying to adjust the pH with a slow reacting material, you may need larger tanks.
If you want a definite answer, provide a description of what you are trying to do.
RE: pH system - Design criteria
I am just looking for a rule of thumb, since we often see that type of installation. Should we plan 30 seconds or 3 hours?
Thanks
RE: pH system - Design criteria
Another rule of thumb, turnover (mixing) time should be less than 20% of residence time.
If the solution contains concentrations of 1% and greater of either acid or alkali, then you should go with a two-stage system to minimize the oscillations caused by overfeeding of a reagent.
RE: pH system - Design criteria
RE: pH system - Design criteria
RE: pH system - Design criteria