Page 23 - Steel Tech India eMagazine Volume April 2022

VOL. 16 • NO. 3 • April 2022

to reduce pollution. carbon compounds along with some other elements
to the atmosphere polluting the air and environment.
Environmental Pollution Aspect of Iron and Steel
Sector Indian iron and steel sector emits around 242 million
tones cO per year to the atmosphere in present
[8]
2
In general, for integrated steel plant in India, each scenario. the rate of cO emission is predicted to
2
ton of liquid steel production needs about 2.8 metric reach around 837 million tons by 2050 . Beside cO
[9]
2
tons of raw materials, 2.5 metric tons of water and 5 other considered hazardous element in form gasses
metric tons of air. 8 metric tons of moist laden gases, are also emitted by iron and steel sector like SO , NOx,
2
0.5 metric tons of effluent water, 0.4 to 0.8 metric tons CO, Pb, Ni, As, Cd, Cr, Cu, Zn, Se, Hg etc . Iron and
[10]
of solid waste are generated to produce 1 metric ton steel plant is responsible for water pollution and soil
of liquid steel . Iron and steel sector generates waste pollution also. Waste water is allowed to mix up with
[7]
pollutants in the form of gaseous waste, liquid waste the natural sources of water bodies like ocean, river,
and solid waste. Steel plant emits mainly carbon and streams etc. Natural water bodies are mixed up with

Fig. 1: Flow sheet of an integrated steel plant [11]
Steel tech 21