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Published on: October 15, 2015
Treatment of industrial effluents by a continuous system: electrocoagulation--activated sludge
Tejocote-Pérez Moisés1, Balderas-Hernández Patricia, C E Barrera-Díaz
1Centro Conjunto de Investigación en Química Sustentable UAEMéx-UNAM, Carretera Toluca-Atlacomulco Km 14.5, 50200 Toluca, Mexico. moytej@yahoo.com.mx
Abstract:
A continuous system electrocoagulation--active sludge was designed and built for the treatment of industrial wastewater. The system included an electrochemical reactor with aluminum electrodes, a clarifier and a biological reactor. The electrochemical reactor was tested under different flowrates (50, 100 and 200 mL/min). In the biological reactor, the performance of different cultures of active sludge was assessed: coliform bacterial, ciliate and flagellate protozoa and aquatic fungus. Overall treatment efficiencies of color, turbidity and COD removal were 94%, 92% and 80%, respectively, under optimal conditions of 50 mL/min flowrate and using ciliate and flagellate protozoa. It was concluded that the system was efficient for the treatment of industrial wastewater.
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