Fundamental Study about Removal of Boron in Industrial Wastewater and Final Disposal Site Wastewater

Abstract

 The removal of boron by the hydroxyapatite formation reaction using Ca(OH)₂ and (NH₄)₂HPO₄ in room temperature has been reported. This method's the reaction time was shortened to 1/10 of that of the conventional technique. Reaction temperature, reagent's grain size and reagent including inpurities for this method was investigated. This method was also tested in two real wastewater samples (grass industrial wastewater and final disposal site wastewater). The amount of residual boron in two real wastewater samples was also reduced under boron effluent standard by using this method. In this method, removal of boron was concerned with purty of Ca(OH)₂ reagent and coexisting ions in wastewater.