Research Article
Preparation and Coagulation Behavior of a Novel Multiple Flocculant Based on Cationic Polymer, Hydroxy Aluminum, and Clay Minerals
Table 11
The coagulation behaviors of CMHa-S carried different dosage of PDMDAAC (1000 NTU diatomite suspension).
| | Dosage of flocculants (mg/L) | CPAM
(mg/L) | Settling time (s) | Residual turbidity (NTU) | Characteristics of alum floc during coagulation reaction |
| | SPAC (100) | | 150 | 5.5 | Alum floc slow and minor | | SPAC (150) | | 100 | 2.2 | Alum floc quick and larger | | CMHa-S-PDMDAAC8 (50) | | 100 | 4.5 | Alum floc quick and larger | | CMHa-S-PDMDAAC16 (50) | | 90 | 3.1 | Alum floc quick and larger | | CMHa-S-PDMDAAC24 (50) | | 80 | 2.1 | Alum floc quick and larger |
| | SPAC (30) | 2 | 20 | 1.4 | Alum floc quick and larger | | CMHa-S-PDMDAAC8 (15) | 2 | 20 | 1.2 | Alum floc quick and larger | | CMHa-S-PDMDAAC16 (15) | 2 | 25 | 1.1 | Alum floc quick and larger | | CMHa-S-PDMDAAC24 (15) | 2 | 20 | 0.8 | Alum floc quick and larger |
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