title: Municipal wastewater treatment by biofiltration: comparisons of various treatment layouts. Part 2: assessment of the operating costs in optimal conditions.
abstract: This work aims to compare the operation costs (energy, reagents, waste management) for the three layouts usually used in wastewater treatment plants incorporating biofilters, using technical and economical data acquired during 10 years of operation of a Parisian plant (Seine Centre, 240,000 m(3) d(-1) -800,000 equivalent inhabitants). The final objective is to establish general economical data and tendencies that can be translated from our study to any biofiltration plant. Our results evidenced the savings achieved through the treatment process combining upstream and downstream denitrification. To use this layout reduced the operating costs by some 10% as compared with conventional processing only comprising downstream denitrification. Operating costs were respectively estimated at 37 and 34 €/1,000 m(3) for downstream denitrification and combining upstream and downstream denitrification layouts.
authors.affiliation: SIAAP - Direction du Développement et de la Prospective, 82 avenue Kléber, F-92700 Colombes, France. vincent.rocher@siaap.fr
authors.forename: Vincent
authors.initials: V
authors.lastname: Rocher
authors.forename: Catherine
authors.initials: C
authors.lastname: Paffoni
authors.forename: Alexandre
authors.initials: A
authors.lastname: Gonçalves
authors.forename: Sam
authors.initials: S
authors.lastname: Azimi
authors.forename: André
authors.initials: A
authors.lastname: Pauss
mesh_terms: D000641:Ammonia / Q000737:chemistry; D002947:Cities; D009566:Nitrates / Q000737:chemistry; D013997:Time Factors; D014865:Waste Disposal, Fluid / Q000191:economics* / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000737:chemistry* / Q000191:economics*; D018508:Water Purification / Q000191:economics / Q000379:methods
chemical_list: D009566:Nitrates; D014874:Water Pollutants, Chemical; D000641:Ammonia