Moringa oleifera Lam. and Its Potential Association with Aluminium Sulphate in the Process of Coagulation/Flocculation and Sedimentation of Surface Water

Table 4

Values ​​of removal efficiency for the best operating conditions in association of seeds of M. oleifera and aluminium sulphate.

Parameters					Removal efficiency (%)
RMV; (rpm)	RMT; (min)	SMV; (rpm)	SMT; (min)	ST; (min)	Apparent color	Turbidity
105	1	30	15	15–45	92.3–93.6	91.0–92.0	75.5–76.3
110	1	30	15	45	90.9	90.0	72.4
100	2	30	15	30–45	91.2–92.5	92.2–92.9	74.3–75.2
105	3	30	15	45–60	93.8–95.4	92.8 – 94.1	77.2
110	3	30	15	60	92.9	92.6	79.0
110	1	45	15	60	92.8	91.2	76.1
105	2	45	15	45–60	93.1–93.3	92.9–93.3	75.3–75.8
100	3	45	15	45	91.0	91.0	74.0
105	3	45	15	45–60	92.9–93.2	92.9–93.0	78.6

SMV: slow mixing velocity; RMV: rapid mixing velocity; SMT: slow mixing times; RMT: rapid mixing times; ST: sedimentation times.