title: Full-scale operating experience of deep bed denitrification filter achieving <3 mg/l total nitrogen and <0.18 mg/l total phosphorus.
abstract: The Arlington County Wastewater Pollution Control Plant (ACWPCP) is located in the southern part of Arlington County, Virginia, USA and discharges to the Potomac River via the Four Mile Run. The ACWPCP was originally constructed in 1937. In 2001, Arlington County, Virginia (USA) committed to expanding their 113,500 m³/d, (300,000 pe) secondary treatment plant to a 151,400 m³/d (400,000 pe) to achieve effluent total nitrogen (TN) to <3 mg/l and total phosphorus (TP) < 0.18 mg/l. Key to this conversion was the implementation of deep bed denitrification filters to simultaneously achieve both low effluent TN and TP concentrations. A challenge with implementing this technology is maintaining a health denitrifying biomass within the denitrification filters while reducing an essential nutrient, phosphorus, to very low concentrations. This paper will review the steps from concept to the first year of operation, including pilot and full-scale operating data and the capital cost for the denitrification filters.
authors.affiliation: Malcolm Pirnie, Inc., 104 Corporate Park Drive, White Plain, NY 10602, USA. joe.husband@arcadis-us.com
authors.forename: Joseph A
authors.initials: JA
authors.lastname: Husband
authors.forename: Larry
authors.initials: L
authors.lastname: Slattery
authors.forename: John
authors.initials: J
authors.lastname: Garrett
authors.forename: Frank
authors.initials: F
authors.lastname: Corsoro
authors.forename: Carol
authors.initials: C
authors.lastname: Smithers
authors.forename: Scott
authors.initials: S
authors.lastname: Phipps
mesh_terms: D058440:Denitrification; D005374:Filtration / Q000295:instrumentation* / Q000379:methods; D009584:Nitrogen / Q000737:chemistry*; D010758:Phosphorus / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000295:instrumentation* / Q000379:methods; D014867:Water / Q000737:chemistry*
chemical_list: D014867:Water; D010758:Phosphorus; D009584:Nitrogen