title: On the fit of statistical and the k-C* models to projecting treatment performance in a constructed wetland system.
abstract: The objective of this study was to assess the suitability of statistical and the k-C* models to projecting treatment performance of constructed wetlands by applying the models to predict the final effluent concentrations of a pilot field-scale constructed wetlands system (CWs) treating animal farm wastewater. The CWs achieved removal rates (in g/m(2).d) ranging from 7.1-149.8 for BOD(5), 49.8-253.8 for COD and 7.1-47.0 for NH(4)-N. Generally, it was found that the statistical models developed from multiple regression analyses (MRA) were stronger in predicting final effluent concentrations than the k-C* model. However, both models were inadequate in predicting the final effluent concentrations of NO(3)-N. The first-order area-based removal rate constants (k, m/yr) determined from the experimental data were 200.5 for BOD(5), 80.1 for TP and 173.8 for NH(4)-N and these indicate a high rate of pollutant removal within the CWs.
authors.affiliation: Centre for Water Resources Research, School of Architecture, Landscape and Civil Engineering, University College Dublin, Belfield, Dublin, Ireland.
authors.forename: A O
authors.initials: AO
authors.lastname: Babatunde
authors.forename: Y Q
authors.initials: YQ
authors.lastname: Zhao
authors.forename: R J
authors.initials: RJ
authors.lastname: Doyle
authors.forename: S M
authors.initials: SM
authors.lastname: Rackard
authors.forename: J L G
authors.initials: JL
authors.lastname: Kumar
authors.forename: Y S
authors.initials: YS
authors.lastname: Hu
mesh_terms: D000383:Agriculture; D000534:Alum Compounds / Q000737:chemistry; D007494:Ireland; D015233:Models, Statistical; D017672:Nitrogen Compounds / Q000032:analysis; D009930:Organic Chemicals / Q000032:analysis; D017553:Phosphorus Compounds / Q000032:analysis; D010865:Pilot Projects; D012722:Sewage / Q000737:chemistry; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000032:analysis*; D018508:Water Purification / Q000379:methods*; D053833:Wetlands
chemical_list: D000534:Alum Compounds; D017672:Nitrogen Compounds; D009930:Organic Chemicals; D017553:Phosphorus Compounds; D012722:Sewage; D014874:Water Pollutants, Chemical; C041524:aluminum sulfate