Ozonation of wastewater for irrigation in a plant powered by photovoltaic energy

Mokhtaria Jbilou¹, Said Nemmich², Kamel Nassour¹, Mohamed Nadjib Brahami¹, Mohamed Bouhmama², Mostafa Bahami¹, Amar Tilmatine^{2, *}

^* The author to whom correspondence should be addressed.

¹ ICEPS Laboratory, Djillali Liabes University of Sidi-Bel-Abbes, Algeria
² APELEC Laboratory, Djillali Liabes University of Sidi-Bel-Abbes, Algeria

Abstract

In Algeria and many other developing countries, the reuse of effluents from urban wastewater treatment plants for irrigation is prohibited because the bacterial and heavy metal load in such wastewater exceeds the maximum permissible limit. The aim of this study was to demonstrate the feasibility of using an ozone water treatment system powered by photovoltaic electrical energy for irrigation in agriculture. In this study, effluents treated by the wastewater treatment plant of Sidi-Bel-Abbes city were investigated. Bacteriological and physicochemical analyses of the ozone-treated wastewater were performed before and after ozone treatment. Analysis of heavy metals, pH, temperature, biological oxygen demand, chemical oxygen demand, suspended matter, and microbial activity (bacteria, viruses, and parasites) revealed that the levels of all parameters were lower than the national and international irrigation standards.

Keywords - Ozone water treatment, voltage waveform, energy efficiency.

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