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Abstract
The objective of this work is to study COD and BOD5 reduction of domestic wastewater using biological denitrification provided by anaerobic flora attached to different support media (pouzzolane irregularly shaped, foam (polyurethane) cube-shaped, two different types of PVC (polyvinyl chloride), PET (polyethylene terephthalate), and PS (polystyrene)) Under optimum conditions, maximum reduction and maximum COD and BOD5 reduction achieved using PVC1 and PVC2 were 64.33 and 58.93%, and 80.1 and 72.1%, respectively. Results showed that PVC offered potential benefits for COD and BOD5 removal from wastewater. Results showed that PVC promotes bacterial adhesion and biofilm formation compared to other support media and offered potential benefits for COD and BOD5 removal from wastewater.
Acknowledgements
This study is cofinanced by the Hassan II Academy of Science and Technology of Rabat, Morocco. The authors express their thanks to all members and PhD students of the Lab of Marine Biotechnology and Environment (BIOMARE) in the Faculty of Science for their support and for providing the equipment. We would also like to give our thanks to all the colleagues from Lab of Water and Environment who provided a lively atmosphere all throughout the research.