Mechanism Study on the Flocculating of Ferric Chloride and Recent Progress

Abstract:

Ferric chloride is widely used in the wastewater treatment. The mechanism study on the flocculating of ferric chloride and the recent progress were discussed in this paper. Four typical mechanisms were illustrated including charge neutralization，adsorption bridging，sweep flocculation and compressing thickness of electric double layer. The current research progress was reviewed and intensive study was suggested on floc structure，conformation，zeta potential and the synergistic effect of ferric chloride.