Alternative Denitrification Systems: Post Anoxic Simple to Operate  Can tolerate variations in the influent nitrate  Monitoring of carbon addition is not very critical  No internal recirculation flows Can be designed to remove high influent nitrate Requires external carbon source (cost & complexity) Alkalinity and oxygen recoveries benefits from denitrification process are not used within the system Simple to Operate  Can tolerate variations in the influent nitrate  Monitoring of carbon addition is not very critical  No internal recirculation flows Can be designed to remove high influent nitrate Requires external carbon source (cost & complexity) Alkalinity and oxygen recoveries benefits from denitrification process are not used within the system
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