The maximum BOD removal efficiency of an oxidation pond is ___________
(a) 90%
(b) 68%
(c) 70%
(d) 80%
I had been asked this question by my college director while I was bunking the class.
My question is based upon Oxidation and Stabilization Ponds in portion Solid Waste Management, Aerobic & Anaerobic Stabilization Units of Environmental Engineering