Comparative Experiment of Coagulant for the Pretreatment of Coagulation Air Floatation for Slaughter Wastewater

摘要

As a kind of high concentration organic wastewater, coagulation pretreatment for slaughter wastewater should be carried out before biological treatment process. For optimal treatment effect, the choice of coagulant was crucial. In this paper, FeSO_4.7H_2O, FeCl_3, Al_2(SO_4)_3, PAC were taken as coagulant and PAM was taken as coagulant aid. The effect of coagulation was analyzed under different conditions. Results showed that the PAC was the best coagulant for slaughter wastewater pretreatment. This study provided reference for coagulation air floatation of slaughter wastewater pretreatment.