When you said your rejection rate dropped, do you mean your permeate rate increased? NO - NO INCREASE
If carbon fines are a problem then your permeate rate should decrease, rather. NO DECREASE
Waht about the feed flowrate in all cases? FLOWRATE STAYED THE SAME
Excuse my ignorance. What is the...
You seem to be confusing terms
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Not to disagree with you but, Here's the definition of Rejection: Material not being allowed to pass through a membrane. This is what a reverse osmosis unit does: it "rejects" contaminants and does not...
The membrane rejection rate this morning is 92-93% and climbing. It was definitely the carbon fines that were creating the problem.
Doesn't matter what type of carbon you use. I have used both Centaur and Westates and have had the same rejection rate failure after a rebed.
FLUSH FLUSH FLUSH...
Sean, I'm not trying to disagree with anyone here, just a plain water guy seeking some clues.
The carbon unit prior to the RO is 14"Wx65"H .. has 60lbs of 1/4 gravel in it and 3cft of acid washed carbon.
The rejection rate always drops for some odd reason, Ran water through the carbon unit and...
How are you able to quantify in such precision the rejection with such a small system? It does not make any sense that you are able to do it.
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Are you actually measuring the flow rates? How do you go about calculating the rejection?
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I have a 14x65 Carbon unit prior to a 5 GPM Reverse Osmosis Unit. Whenever I rebed the carbon the rejection rate drops from 97-98% to 88% or even lower.
Anyone know why this happens?
