Tannery industrial wastewater treatment by electrocoagulation

This article has as main objective to make a compilation and investigation of the characteristics, advances and developments of electrocoagulation (EC) in the treatment of industrial wastewater from tanneries and its applicability in other industries that provide high content of contaminating compounds to the bodies of water, this treatment was patented several decades ago, nevertheless, in recent years it has gained much relevance demonstrating that the treatment of tannery effluents through this system is efficient obtaining removals of up to 90% for the removal of contaminants such as MO, Cr, phosphorus, turbidity, color, SST, SW among others, in addition to its low generation of sludge, low cost, ease of operation and other advantages offered to conventional methods; The efficiency in this treatment is directly proportional to the current and time of electrolysis, in addition all these advances are applied in dairy, steel and galvanized transforming instruments, being in the last ones more efficient to remove heavy metals such as Ni, Pb, Zn