Abstract

MORALES POSADA, Nelly Bibiana  and  ACOSTA NINO, GemaEunice. ELECTROCOAGULATION SYSTEM AS TREATMENT OF GALVANIC WASTEWATER. Cienc. Ing. Neogranad. [online]. 2010, vol.20, n.1, pp.33-44. ISSN 0124-8170.

This paper shows the second phase of the project "implementation and evaluation of an Electro-coagulation pilot test as Treatment of Wastewater to be reused. Case Study: Industrial Wastewater Galvanic source." For its development, a prototype located at the university was evaluated and optimized from wastewater tests, implementing a percentage higher than 47 % to remove heavy metals, such as Cr⁺⁶, Pb and Zn by electro-coagulation. This study used to 10 l wastewater from Compañía eléctrica ltd. Was used. Analysis was made by comparing Cu, Cr, Cr⁺⁶, Ni, Pb and Zn parameters before and after electro-coagulation treatment. There was a Cr 51,65 % decrease, where value achieved is below standards set regarding waste (resolution no 1074 28 Oct. 1997), Ni 18,09 %, Pb 50 %, Zn 47,37 %, despite their removal have produced higher values than legislation parameters. There was a Cu 519,48 % increasing due to the plate used by treatment. Average values during tests were pH: 3,18; conductivity: 21,83 mS/m; and temperature: 48,5°C. Although variable and parameter values are not generally within those given in accordance to literature with wastewater electro-coagulation, there was a signifcant reduction in the presence of metals studied.

Keywords : galvanic wastes waters; electrocoagulation; heavy metals; electrolytic cell.

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