Impact Evaluation of Wastewater Treatment Based on the Anaerobic Digestion of Sewage Sludge Using the Life Cycle Assessment Method

Table 2

Emissions and pollutants of the South Tehran’ sewage treatment plant.

Type	Parameter	Amount per 450000  of treated wastewater	Unit
Emissions	CO	4050000
		13500
	Ozone	36000
		22500
		360
		1260000
		814500
		36450000
		18450000
Pollutants	COD	18000
	SS	4050
	TN	9000
	TP	301.5
	As	4.32
	Pb	6.75
	Cd	0.54
	Cr	1.17
	Cu	13.5
	Ni	3.105
	Zn	14.4
	Hg	0.009