Determination of first-order rate constant for phosphorus removal in a novel model-reed bed treatment system
Two years performance data from a single laboratory scale reed bed system of constructed wetland receiving phosphorus rich animal farm wastewater under tidal flow operation were used to compute the reaction rate constant k for the parameters such as reactive phosphorus (RP) and soluble reactive phosphorus (SRP) based on first-order kinetics. The reed bed is novel in its substrate of using dewatered aluminum-flocculated drinking water treatment sludge to enhance phosphorus removal. The k values were calculated using influent and effluent concentrations and an assumption of plug flow hydraulics. Effluent concentrations were reasonably correlated to influent concentrations for both RP (R2=0.82) and SRP (R2=0.37). The calculated rate constant k of the firstorder plug flow kinetics model for RP of 17.1 d-1 and SRP of 19.8 d-1, respectively, were higher than those reported in the literature for farm wastewater treatment using reed bed system. This reflects the advantage regarding the treatment efficiency of such the alum sludge-based novel reed bed treatment system.
Alum sludge phosphorus removal reed bed first-order reaction rate constant
J.L.G Kumar Y.Q. Zhao X.H. Zhao A.O. Babatunde
Centre for Water Resources Research, School of Architecture, Landscape and Civil Engineering, University College Dublin, Newstead, Belfield, Dublin 4, Ireland
国际会议
2009 Beijing International Environmental Technology Conference(2009北京国际环境技术会议暨第五届“中、德、波环境技术研讨会)
北京
英文
259-269
2009-10-16（万方平台首次上网日期，不代表论文的发表时间）