Question

Environmental impact of Manufacturing Steel Structural I-beams by Shape Rolling

Answer 1

The environmental impact of steel production =
Steel production has a big impacts on the environment, including air emissions (CO, SOx, NOx, PM2), wastewater contaminants, hazardous wastes, and solid wastes. The main environmental impacts from integrated steel mills are from coking and iron-making.

Climate changes --
Virtually all of the greenhouse gas emissions associated with steel production are from the carbon dioxide emissions related to energy consumption.

Emissions to air--
Coke production is one of the main pollution sources from steel production. Air emissions such as coke oven gas, naphthalene, ammonium compounds, crude light oil, sulfur and coke dust are produce from coke ovens.

Emissions to water--
Water emissions come from the water used to cool coke after it has until end baking. Quenching water becomes contaminated with coke breezes and other compounds. While the volume of contaminated water can be great, quenching water is fairly easy to reuse. Most pollutants can be removed by filtration.

Waste--
Slag, the limestone and iron ore impurities collected at the top of the molten iron, build up the largest portion of iron-making by-products. Sulfur dioxide and hydrogen sulfide are dehydrated and captured in air emissions control equipment and the residual slag is sold to the construction industry.That is not a pollution prevention technique, the solid waste does not reach landfills.

Gaseous emissions and metal dust are the many more prominent sources of waste from electric arc furnaces.