Alternative Denitrification Systems: Single-Stage Anoxic Zone Effluent nitrate of 8-12 mg/L without external carbon source Alkalinity and oxygen recovery Influent WW should have adequate BOD to satisfy the denitrification needs Sensitive to the aeration tank DO and the nitrate recirculation flow rate Suitable for large plants Effluent nitrate of 8-12 mg/L without external carbon source Alkalinity and oxygen recovery Influent WW should have adequate BOD to satisfy the denitrification needs Sensitive to the aeration tank DO and the nitrate recirculation flow rate Suitable for large plants
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