Author(s)

G.K. Luk

Abstract

For the removal of phosphorus from municipal wastewater, dissolved mono- hydrogen phosphates are complexed into suspended particulates through the addition of a metallic coagulant. Complex metal-phosphorus reaction, precipitation kinetics, and hydroxide side reaction render stoichiometric calculations invalid in the determination of the required coagulant dosage. This study describes an experimental investigation using the standard jar-tests to reveal the relationship between phosphorus removal and the required metal- phosphorus molar ratio, under varying pH and initial conditions. The coagulants selected for the study are ferric chloride and aluminum sulfate. Results define a non-linear relati

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