Detection and Mitigation of Vivianite Scaling in Anaerobic Digesters

Biosolids and Sludge Management

“…Precipitation of struvite (MgNH 4 PO 4 •6H 2 O) and vivianite (Fe 3 (PO 4 ) 2 •8H 2 O) is a common problem associated with anaerobic digestion that has been attributed to biological and chemical phosphorus removal practices that may be reduced by minimizing temperature and partial pressure changes in digester mixing and sludge heating and recirculation systems (Shimada et al, 2011). Esping and…”