Method for struvite recovery using phosphate injection

摘要

Formation of scale in a wastewater treatment system upstream of a struvite precipitation reactor is inhibited by injection of one or more of CO 2 and H 3 PO 4 . The injection may be performed at multiple locations. Injection may be controlled based on one or more of pH, fluid flow and fluid pressure. Scale may be inhibited while maintaining production of precipitated struvite.