Treatment of industrial effluents by a continuous system: electrocoagulation--activated sludge

Bioresour Technol. 2010 Oct;101(20):7761-6. doi: 10.1016/j.biortech.2010.05.027. Epub 2010 Jun 8.

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.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Biological Oxygen Demand Analysis
  • Color
  • Electrochemical Techniques
  • Industrial Waste*
  • Nephelometry and Turbidimetry
  • Sewage*
  • Wastewater*
  • Water Pollutants / isolation & purification

Substances

  • Industrial Waste
  • Sewage
  • Waste Water
  • Water Pollutants