Landfill Leachate Toxicity Removal in Combined Treatment with Municipal Wastewater

Table 6

Chemical characteristics of raw and treated wastewater (10% of leachate in influent I and II).

Parameter		Unit	Range	Average±SD	Percentile 80/100	Range	Average±SD	Percentile 80/100	Mean removal [%]
			Influent			Effluent
	I		300–410	348±47	390	43–114	74±24	90	78
COD	II	mg/dm^3	281–650	460±95	520	62–233	150±45	182	67
	III		257–362	316±49	361	34–83	55±22	70	83
	I		240–280	262±18	280	10–20	17±6	20	94
BOD	II	mg/dm^3	240 + 270	250±17	258	10–20	10±0	10	96
	III		240–280	264±17	272	0–10	6.0±4	8	98
	I		87–151	109±41	133	8–23	16±6	21	86
Nog	II	mg/dm^3	135–380	277±66	315	4–9	6±2	6	98
	III		73–296	150±71	200	0–13	6±4	10	96
	I		26–70	53±16	61	2–10	5±3	8	90
N-NH4	II	mg/dm^3	128–255	200±33	222	3–16	6±3	7	97
	III		80–160	120±26	136	2–10	5±4	8	96