How to treat steel industrial wastewater?
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In environmental chemistry, the chemical oxygen demand (COD) is an indicative measure of the amount of oxygen that can be consumed by reactions in a measuredsolution. ... The most common application ofCOD is in quantifying the amount of oxidizable pollutants found in surface water (e.g. lakes and rivers) orwastewater
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Wastewater from iron and steel works, where the smelting of pig iron in blast furnaces and of steel in open hearth furnaces takes place, contains a considerable amount of oil, dust, acid, iron, and other metals. Blast furnace gas is treated by water spraying to remove dust.
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