Mass Transfer Kinetics of Phosphorus to Filter Media from Wastewater, Storm Water, and Surrogate Matrices

Abstract

Granular media are increasingly utilized for control of phosphorus (P), frequently indexed as total P (TP), which represents the sum of particulate (PP) and dissolved P (DP) fractions. The fate of PP notwithstanding, when such media are deployed for control of DP, the mass transfer kinetics from an aqueous matrix to the media is important for design and modeling tools. In this paper, the mass transfer of DP for a suite of common media are monitored and modeled with a focus on comparing the behavior of Al-oxide coated media (AOCM) subjected to synthetic and actual runoff (wet weather) as well as wastewater (dry weather) matrices. The media employed were