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 1

Physicochemical and microbial characteristics of effluent from wk 1 of laboratory-scale filtration setup.

		N	Mudor WWTP effluent				Lab-scale setup effluent				% Reduction	EPA std.
			Min	Max	Mean	Std. dev.	Min	Max	Mean	Std. dev.
COD	mg/L	21	82.822	175.550	117.268	28.805	2.340	6.350	4.009	0.939	96.58	250
BOD	mg/L	21	6.980	89.450	46.147	25.749	0.200	0.510	0.341	0.089	99.26	50
TSS	mg/L	21	14.234	46.012	34.103	9.203	000	000	000	000	100	50
TDS	mg/L	21	1002	1462.590	1230.27	153.317	500	734.800	615.200	87.000	58.11	1000
EC	µS/cm	21	1346	2621.00	1608.65	266.336	301.450	501.783	424.652	61.953	73.60	1500
pH		21	6.959	8.858	7.599	0.512	7.220	8.451	7.849	0.389	—	6–9
Turbidity	NTU	21	12.780	85.090	43.523	32.799	0.107	0.264	0.181	0.041	99.59	75
Color	TCU	21	91.223	289.56	152.681	59.203	0.323	1.433	0.827	0.402	99.47	200
ORP	mg/L	21	5.032	36.000	18.769	10.441	9.000	32.000	19.430	6.947	—
DO	mg/L	21	0.573	2.890	1.620	0.677	2.120	5.860	3.762	1.188	-
NH3	mg/L	21	10.000	125.000	51.352	33.842	0.320	1.550	0.817	0.436	98.41	1
TC	CFU/100 ml	21	18 × 10^5	72 × 10^5	41 × 10^5	16.01	10 × 10^2	43 × 10^2	24 × 10^2	11.138	99.94	400
E. coli	CFU/100 ml	21	9 × 10^5	44 × 10^5	26 × 10^5	13.866	6 × 10^2	10 × 10^2	7.82 × 10^2	1.28	99.97

N: number of samples; Significant at 95% confidence level; total of 21 L of Mudor effluent water was filtered at week 1.