Treatment of Slaughter House Wastewater in a Sequencing Batch Reactor: Performance Evaluation and Biodegradation Kinetics

Table 2

Characteristics and composition of slaughterhouse wastewater.

Parameters	Raw wastewater					Pretreated wastewater
	Set-1	Set-2	Set-3	Set-4	Range	Set-1	Set-2	Set-3	Set-4	Range
pH	8.0	8.2	8.5	8.4	8.0–8.5	7.5	7.2	8.5	7.8	7.5–8.5
TSS (mg/L)	10120	12565	14225	13355	10120–14225	2055	2280	2540	2386	2055–2540
TDS (mg/L)	6345	7056	7840	6865	6345–7840	2800	3065	3230	3185	2800–3230
DO (mg/L)	0.8	1.1	0.9	1.3	0.8–1.3	1.2	1.4	1.5	1.6	1.2–1.6
SCOD (mg/L)	6185	6525	6840	6455	6185–6840	830	945	1045	925	830–1045
BOD5 at 20°C (mg/L)	3000	3200	3500	3350	3000–3500	210	240	265	252	210–265
TKN (mg/L as N)	1050	1130	1200	1165	1050–1200	305	420	525	485	305–525
NH4^+ N (mg/L as N)	650	695	735	710	650–735	95	155	191	125	95–191