Calculating Alum and Polymer Dosages?
Calculating Alum and Polymer Dosages?
(OP)
Is there a formula that can be used to calculate how much Alum and Polymer will be needed for a clarifier with a capacity of 249,000 gals and 1000 gpm coming in? I want to have a good sludge blanket and clear up a heavy floc that is starting to develop but not settle out. It sounds like from what I've been told it is just a case of experimenting with different amounts. That doesn't sound right to me. My plant went from 7hrs detention time @ 600 gpm to 4 hrs detention time @ 1000 gpm. Has to be a scientific solution to this. Any help would be appreciated.





RE: Calculating Alum and Polymer Dosages?
Treatment training books get into detial on the procedure, methods and evaluation.
Hydrae
RE: Calculating Alum and Polymer Dosages?
RE: Calculating Alum and Polymer Dosages?
Hydrae
RE: Calculating Alum and Polymer Dosages?
Just because the well will output 1000 gpm does not mean the clarifier is sized for that flow. The surface area of the clarifier will allow you to determine your upflow rate. Increasing the upflow rate too much will keep the sludge suspended and not allow it to settle. If this is the case, varying the chemical dosages may not help develop a sludge blanket.
RE: Calculating Alum and Polymer Dosages?