Landfill Leachate Toxicity Removal in Combined Treatment with Municipal Wastewater

Table 5

Chemical characteristics of raw and treated wastewater (1% 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		265–346	314±41	344	57–124	86±24	106	72
COD	II	mg/dm^3	213–486	316±84	346	15–142	112±38	138	64
	III		153–356	222±71	263	46–90	65±15	80	83
	I		230–270	248±15	246	5–10	8±3	10	97
BOD	II	mg/dm^3	180–200	190±10	190	10–20	13±6	10	93
	III		160–200	180±20	240	10–20	13±6	16	93
	I		106–151	139±21	152	19–34	21±6	26	85
Nog	II	mg/dm^3	87–226	161±68	217	1–9	3±2	4	98
	III		73–181	116±40	150	1–4	2±1	1.0	99
	I		98–124	97±10	118	1–3	3±2	5	97
N-NH4	II	mg/dm^3	85–177	128±29	154	1–9	2±2	4	98
	III		53–131	78±20	87	0–3	1±1	2	99