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Biological Nutrient Removal Overview Biological Nutrient Removal System Treatment is the activity of removing Nitrogen and Phosphorus from the waste stream prior to discharge or reuse the water. N and P are contributors to the I "hypoxia" or lack of oxygen in the Mississippi River from point and non-point water sources. Since we only can control the point sources,WWTP discharges, our focus to provide high quality of discharge water below standards required by the Federal EPA and local regulatory authorities.
The more stringent the water quality, the more controls and other influences to the tratment design are required. For example, influent organic strength and water temperature will provide the necessary outside influences to performance effectiveness. The cleaner the water the quicker the biological reactions. The more BOD organic strength, to a respectable level, the easier the dentrification and anaerobic requirements for BNR to occur.
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