Preparation and Coagulation Behavior of a Novel Multiple Flocculant Based on Cationic Polymer, Hydroxy Aluminum, and Clay Minerals

Table 14

Coagulation behaviors of CMHa versus PAC for paper-making wastewater treatment (original wastewater 850 NTU).

Dosage of flocculants (mg/L)	CPAM (mg/L)	Settling time (s)	Residual turbidity (NTU)	Coagulation behaviors
SPAC (100)	3	50	50	Smaller alum floc
SPAC (120)	3	40	42	Larger alum floc
CMHa (50)	3	50	65	Larger alum floc
CMHa (100)	3	40	52	Larger alum floc
SPAC (200)		70	43	Smaller alum floc
SPAC (250)		60	40	Larger alum floc
CMHa (100)		60	45	Larger alum floc
CMHa (150)		60	42	Larger alum floc