What is the reason for counterflow rinsing
I don't understand exactly the function and advantages of counterflowing rinses. How I can probe that?Omar Osorno
See Ted Mooney's treatise on the subject, "Water Rinsing", in the Metal Finishing Guidebook, Elsevier Science Inc.
Falls Township, Pennsylvania
Get yourself a copy of Water & Waste Control for the Plating Shop, by Kushner & Kushner. Available from Gardner-Hanser Publications. Book has lots of information on water management!
November 28, 2008
Hi, Omar. Counterflow means that the rinsewater flows counter to the direction the work flows. That is, there will be at least two rinse stages following the process tank, and you will feed fresh water into the final rinsing stage, and it will flow from that tank to the previous rinse tank. The theory being that the slight amount of contaminant from the final rinse will not render that previously used water any less adequate as a first rinse than fresh water would be.
So, if you have a two-stage rinse, you only need half as much water if you counterflow it. If you have a three-stage rinse, you only need one third as much water.
Ted Mooney, P.E. RET
Pine Beach, New Jersey
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