When treating typical industrial effluents with aerobic bacteria what are typical COD (Chemical Oxygen Demand) values that can be accepted as input streams?
Also, how low a COD is it reasonable to expect at the outlet of bio-treatment without any downstream polishing units such as Reverse Osmosis or Advanced Oxidation?
I'm trying to estimate in a preliminary design how much of extraction is needed from an aqueous effluent stream contaminated with organics before it might be reasonable to expect bio-treatment to work on the residual organics.
PS. None of the organics are acutely toxic. They only contribute to overall oxygen demand.
Edited by curious_cat, 28 April 2015 - 10:11 PM.