Removal and Recovery of Phosphorus from Wastewater using High-gradient Magnetic Separation Applying a Magnetic Adsorbent

Abstract

This work examines the removal and recovery of phosphorus from treated wastewater using high-gradient magnetic separation (HGMS) applying a micron-sized ferromagnetic zirconium ferrite adsorbent. The characteristics of adsorption and desorption for zirconium ferrite were investigated. An experiment on magnetic separation with zirconium ferrite was performed. Excellent magnetic separation properties were obtained at a fluid velocity of 1 m/s and magnetic field of 2 T. Various parameters of a HGMS system for actual sewage plants were evaluated. These results show that this system could be applied to sewage plants.