Synthesis, Characterization, and Flocculation Properties of Branched Cationic Polyacrylamide

Table 3

Results of jar test for sewage.

No.	Combination of factors and levels	The best rate of turbidity removal (%)	The best rate of COD removal (%)
1	A1B1C1D1	87.31	45.61
2	A1B2C2D2	85.67	31.52
3	A1B3C3D3	86.25	33.33
4	A2B1C2D3	86.45	47.37
5	A2B2C3D1	87.67	57.0
6	A2B3C1D2	84.23	34.78
7	A3B1C3D2	80.55	27.17
8	A3B2C1D3	82.57	25.00
9	A3B3C2D1	85.84	30.95