It’s Not Black Magic

Oxidation Reduction Potential (ORP) can be a valuable tool for seeing what is happening in unit processes like anoxic and anaerobic tanks
It’s Not Black Magic
A small ORP meter shows a negative mV reading in an anoxic basin.

During my 28 years in wastewater treatment, I’ve worked at treatment plants in positions from utility worker to operations manager. One of my best jobs was with a Rural Water Association as a wastewater circuit rider. During that time, I met a fellow named Charlie who was having...

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