Article révisé par les pairs
Résumé : The influence of NaAlO//2 -flocculation of mixed wastewater was investigated by conducting laboratory tests and using pilot-scale flocculation reactor. In comparison with the primary sedimentation, aluminate addition results in a lower residual concentration for Zn and Cd. For all metals under investigation (Cu, Cr, Zn, Cd, and Ni), the removal was found to be irreversible. Biological treatment was uninhibited by an addition of these metals when NaAlO//2 -flocculation was provided.