Review of Upflow Anaerobic Sludge Blanket Reactor Technology: Effect of Different Parameters and Developments for Domestic Wastewater Treatment

Table 4

Performance comparison of UASB with other wastewater treatment technologies.

Sr. number	Parameter	UASB	Activated Sludge Process (ASP)	Trickling Filters (TF)	Waste stabilization pond (WSP)	Moving Bed Bioreactor (MBBR)	References
(1)	BOD removal, %	75–83	85–90	80–90	75–85	85–95	[10, 62, 92, 95–98]
(2)	COD removal, %	70–80	80–95	85–90	70–85	85–90	[10, 44, 62, 92, 95–100]
(3)	TSS removal, %	70–80	85–90	75–85	70–85	85–95	[10, 62, 92, 95–97]
(4)	Overall HRT	4–10 hrs	12–14 hrs	13-14 hrs	8–15 days	8–12 hrs	[49]
(5)	Average applied OLR for sewage treatment	1.0–2.0 KgCOD/m^3·day	0.3–0.55 KgBOD/m^3·day	1.5 to 2.0 KgCOD/m^3·day	50–450 kgBOD/ha·d	4–30 gCOD/m^2·day	[11, 20, 31, 42, 49, 101–106]
(6)	Average area required (m^2/mld)	1450	1820	1620	8000	450	[62]
(7)	Biogas generation	0.05–0.25 (m^3/Kg COD removed)	Nil	Nil	0.05 to 1.5 m^3/Kg BOD5 removed (not usually collected)	Nil	[49, 104–106]
(8)	Economic life in years	30	30	30	30	30	[62]
(9)	Total annual O&M costs	1.0–1.5 US$/inhab. year	4.0–8.0 US$/inhab. year	4.0–6.0 US$/inhab. year	1.5–2.5 US$/inhab. year	10.98 Rupees Lacs/MLD	[62, 92]
(10)	Total construction costs	12–20 US$/inhab.	40–65 US$/inhab.	50–60 US$/inhab.	20–40 US$/inhab.	42.04 Rupees Lacs/	[62, 92]

and M costs are based on Indian Rupees in year 2008 and are calculated considering constant annual expenditure over the life of the plant.