Biological nutrient removal (BNR) is a wastewater treatment process designed to reduce nutrients such as nitrogen and phosphorus from wastewater through biological processes. This method relies on the metabolic activities of microorganisms to convert these nutrients into forms that can be removed from the effluent, thereby preventing their discharge into water bodies and addressing environmental concerns. BNR is increasingly important as regulatory standards become stricter and as the focus on sustainable wastewater management grows.
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