Research on stone processing wastewater treatment based on FA-PAC composite flocculants

摘要

Based on the high turbidity of stone processing wastewater, we introduced a new way of wastewater treatment. First, compound of a new composite flocculants (FA-PAC) was made by from Fulvic Acid and PAC; then, an orthogonal experiment was designed and conducted to get ready for the factors influence the flocculation and optimal flocculation conditions; and then combined the optimal conditions for the FA-PAC granite wastewater treatment, SS of supernatant of treated wastewater is 65mg/L, which is meet the standard of State “Integrated Wastewater Discharge” level; Finally, FA-PAC and PAC-PAM were compared, but cost of the former is only about 11% of the latter, which saved costs and is eco-friendly.