Ferric chloride solution used as a coagulant for wastewater treatment
28/10/2014
In this case, the process that generates the waste used as a by-product is the pickling of wire that is produced in the processes of metal surface treatment, a process of drawing of high technological level. The steels that are transformed in this plant are destined to the automotive sector, white line, electromechanical and industrial applications. In the chemical pickling, a solution of hydrochloric acid is used to remove the oxide layer. Following this, the wire passes through acid baths to remove the surface oxides. This process generates an acid solution of ferrous chloride, which has the