《Table 2–The performance of various coagulants and their combinations (optimal dose and correspondin

《Table 2–The performance of various coagulants and their combinations (optimal dose and correspondin   提示:宽带有限、当前游客访问压缩模式
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《Application of a green coagulant with PACl in efficient purification of turbid water and its mechanism study》


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aThe starch-based coagulant was dosed before PACl at an interval of 2 min;bPACl was dosed before the starch-based coagulant at an interval of 2 min.

The two starch-based coagulants with PACl were employed for coagulation of the raw surface water from the Jiuxiang River.The main characteristics of the raw surface water are listed in Table 1.The initial turbidity and chemical oxygen demand(COD)of this surface water are approximately 15.0–25.0 NTU and 3.0–5.0 mg/L,respectively.The coagulation performances of PACl,St-G,St-E and their combinations with different addition sequences are all presented in Fig.2.Accordingly,the optimal doses and corresponding residual turbidities by various coagulation methods have been summarized in Table 2.