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 7

Mean results for analyzed physicochemical parameters of influent and effluent water samples collected for sixteen weeks: large-scale filtration system.

		N	Mudor WWTP effluent				Large-scale filtration system				% Removal	EPA std.
			Minimum	Maximum	Mean	Std. dev.	Minimum	Maximum	Mean	Std. dev.
pH		80	6.9587	8.8554	7.91	0.21	7.3587	8.4509	7.88	0.12	n/a	6.0–9.0
EC	µS/cm	80	1,656.19	3,557.61	2,634.07	197.51	1,034.75	1,772.03	1,403.47	85.36	46.72	1,500.00
TDS	mg/L	80	1,286.54	1,462.59	1,374.30	19.26	671.288	734.77	703	7.38	48.85	1500
ORP	mg/L	80	−38.408	2.496	−19.41	4.43	11.916	35.935	24.05	2.76	n/a
DO	mg/L	80	0.4799	1.578	0.55	0.24	2.462	4.9303	3.76	0.27	n/a	1000
TSS	mg/L	80	11.198	39.721	25.22	2.98	0.00	0.00	0.00	0.00	100	50
BOD	mg/L	80	31.28	85.90	26.12	13.14	4.2392	6.3842	5.32	0.24	79.63	50
COD	mg/L	80	82.822	127.775	105.3	5.17	0.42277	0.59607	0.51	0.02	99.52	250
Turbidity	NTU	80	14.417	80.148	35.05	9.86	0.177034	0.263894	0.22	0.01	99.37	75
Color	TCU	80	106.82	260.2	183.12	17.69	0.82371	1.53672	1.18	0.08	99.36	200
NH3	mg/L	80	9.606	100.6	55.45	10.5	−6.373	18.205	5.5	2.75	90.08	1
TC	MPN/100 ml	80	23 × 10^5	80 × 10^5	45 × 10^5	106.25	18 × 10^4	89 × 10^4	73 × 10^4	142.342	88.23
E. coli	MPN/100 ml	80	15 × 10^5	45 × 10^5	26 × 10^5	122.034	20 × 10^4	49 × 10^4	27 × 10^4	55.025	92.00

Significance at 95% confidence level.