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

Table 7

The coagulation behaviors of CMHa versus PAC (100–1000 NTU diatomite suspension).

Turbidity of diatomite suspension (NTU)	Flocculants; (mg/L)	CPAM; (mg/L)	Settling time (s)	Residual turbidity (NTU)	Coagulation behaviors
1000	SPAC (30)	3	50	5.7	Larger alum floc
1000	CMHa (60)	3	40	4.5	Larger alum floc
1000	SPAC (60)	—	130	7.6	Larger alum floc
1000	CMHa (120)	—	90	5.9	Larger alum floc
500	SPAC (20)	2	60	2.7	Larger alum floc
500	CMHa (40)	2	50	2.3	Larger alum floc
500	SPAC (40)	—	150	4.5	Smaller alum floc
500	CMHa (80)	—	100	3.1	Larger alum floc
100	SPAC (15)	2	80	1.8	Larger alum floc
100	CMHa (30)	2	70	1.6	Larger alum floc
100	SPAC (30)	—	180	2.5	Smaller alum floc
100	CMHa (60)	—	120	1.9	Larger alum floc