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Adapting Process Simulation Models for Denitrification Filter Applications with Low Effluent Nitrogen and Phosphorus Limits

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In many areas of the country where receiving waters have been identified as nutrient impaired, state regulatory agencies are tightening requirements for effluent nitrogen and phosphorus in wastewater treatment facility discharges. For facilities which are already designed for nitrification, or which can be retrofitted to achieve full nitrification, the addition of denitrification filters following the secondary treatment process is often a cost-effective approach to meet effluent total nitrogen (TN) limits.

In these applications, denitrification filters often serve a dual role of removing effluent nitrogen through denitrification and reducing effluent total phosphorus (TP) through both physical as well as biological removal mechanisms. This paper discusses the applicability of a calibrated denitrification filter model in the design of a new denitrification filter for a 15,100 m3/ day (4.0 mgd) wastewater treatment plant with low effluent total nitrogen and total phosphorus limits.
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Keywords: Denitrification filter; enhanced nutrient removal; nitrogen removal; phosphorus removal; process modeling

Document Type: Research Article

Publication date: 2009-01-01

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