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

Table 12

Coagulation behaviors of CMHa versus PAC for domestic-sewage treatment (original wastewater 50 NTU).

Dosage of flocculants (mg/L)	CPAM (mg/L)	Settling time (s)	Residual turbidity (NTU)	Coagulation behaviors
SPAC (20)	5	80	2.7	Smaller alum floc
CMHa (10)	5	70	2.3	Larger alum floc
SPAC (30)	5	70	1.4	Larger alum floc
CMHa (15)	5	70	1.1	Larger alum floc
SPAC (20)		300	5.8	Smaller alum floc
CMHa (10)		200	5.6	Smaller alum floc
CMHa (20)		180	4.6	Larger alum floc