EFFECTS OF LOW DIRECT ELECTRIC CURRENT ON AEROBIC BIOLOGICAL TREATMENT OF URBAN WASTEWATER .........

Wastewater is a major source of both organic and inorganic pollution in the environment. It's due to the fact that it's made up of a lot of different parts (proteins, carbohydrates, oils, urea and synthetic organic compounds). The use of electric current in wastewater treatment operations is becoming a more common occurrence these days. We proposed to investigate, in vitro, the influence of low electric current treatment on the performance of microorganisms found in activated sludge from a wastewater treatment facility in Tizi-aeration Ouzou's basin (Algeria). The trials involved adjusting two parameters: the distance between electrodes (d = 2 cm, d = 6 cm) and the electric current density (D =1.4 mA/cm2, D =3.8 mA/cm2, D = 7 mA/cm2). The results revealed a considerable improvement in the abatement rate of the two parameters studied: turbidity and suspended matter, confirming the efficacy of the method used in this research. In terms of the bacteriological characteristics, it was clear that the composition of the microbial flora in the activated sludge employed was influenced by electric current. With the exception of sulfite-reducing clostridia count, the counts of the entire germs under investigation were found to be greatly reduced when direct electric current was applied.

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