Research Article
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 |
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