Phosphorus removal from a real anaerobic supernatant by struvite crystallization

ln this gaper the phosphorus removal from a real anaerobic supernatant thro ugh the crystallization of struvite and or hydroxyapatite was investigated. A comparison between experimental results on phosphorus crystallization ca rried out in a fluidized-bed reactor (FBR) on a bench-scale and oil a half- scale plant is presented, together with a double saturational model able to describe ail experimental results. independent of the different geometry o f the reactors, the distinct contact rimes and the unlike products obtained . Experimental results show that removal efficiencies are very satisfactory , and the maximum phosphorus removal is of 80%. (C) 2001 Elsevier Science L td. All rights reserved.