Performance Evaluation of Dry Faecal Sludge-Derived Activated Carbon (DFSAC) for Wastewater Pollutant Removal: A Case Study of the Lavender Hill Faecal Treatment Plant

Table 2

Wk 1 mean results for analyzed heavy metal concentration of Mudor and lab-scale setup effluent.

Metal		N	Mudor WWTP effluent				Recycled effluent				% Removal	EPA std.
			Min	Max	Mean	Std. dev.	Min	Max	Mean	Std. dev.
Cu	mg/L	21	0.018	0.092	0.060	0.029	0.001	0.019	0.013	0.005	78.33	0
Cd	mg/L	21	0.017	0.056	0.031	0.013	0.00	0.002	0.001	0.001	96.77	0.1
Zn	mg/L	21	0.018	0.026	0.022	0.002	0.001	0.006	0.004	0.001	81.82	0.5
Fe	mg/L	21	0.003	0.015	0.008	0.004	0.001	0.003	0.002	0.001	75.00	0.3
Pb	mg/L	21	6E − 05	0.003	0.001	0.001	0.00	0.00	0.00	0.00	100	0.1
As	mg/L	21	0.001	0.005	0.006	0.004	0.002	0.00	0.00	0.00	100	0.1

Wk: week; Significance at 95% confidence level.