Parameters influencing calcium phosphate precipitation in granular sludge sequencing batch reactor

► MIPP precipitation in granules contributes significantly to P removal efficiency. ► Parameters influencing the contribution of precipitation have been assessed. ► ACP has been proposed as a HAP precursor by modeling and experimental tools. ► Kinetic and thermodynamic constants for the mineral precipitated have been provided. ► Role of microorganisms in the precipitation has been discussed.