Title: Experimental studies on treatment of wastewater using Cladophora sp. and advanced oxidation

Authors: A.M. Saravanan; Ahmed Soud Said Al Hatmi; Anna Jesil; Adeeb Mohammed Salim; Nisha Sherief

Addresses: Department of Mechanical and Industrial Engineering, National University of Science and Technology, Sultanate of Oman ' Department of Mechanical and Industrial Engineering, National University of Science and Technology, Sultanate of Oman ' Department of Mechanical and Industrial Engineering, National University of Science and Technology, Sultanate of Oman ' Department of Mechanical and Industrial Engineering, National University of Science and Technology, Sultanate of Oman ' Department of Mechanical Engineering, Jyothi Engineering College, Thrissur, India

Abstract: This paper envisages the treatment of wastewater using microalgae reactor. The micro-algae Cladophora species was collected from Nizwa region of Oman for the treatment of domestic wastewater through continuous process and batch process. In the continuous process, the data shows that, micro-algae can be used to treat domestic wastewater as the percentage reduction observed were the chemical oxygen demand (COD) of 87%, biological oxygen demand (BOD) of 52%, total organic carbon (TOC) of 99%, and turbidity of 93.1%. On the other hand, for the batch process, the optimum conditions at which the maximum removal of pollutant was determined to be was at residence time of 144 hours, algal dosage of 0.5 kg and an agitation period of 10 hours using response surface methodology (RSM). The higher the retention time, algae dosage and agitation time, the better is the removal of contaminants from domestic wastewater. The percentage removal at optimum conditions in batch process of COD, TDS, TOC, and turbidity were 93.25%, 23%, 88.2%, and 90.3%, respectively.

Keywords: biochemical oxygen demand; Cladophora sp.; chemical oxygen demand; COD; batch process; biological oxygen demand; BOD; total dissolved solids; TDS.

DOI: 10.1504/WRSTSD.2021.114685

World Review of Science, Technology and Sustainable Development, 2021 Vol.17 No.2/3, pp.248 - 262

Received: 26 Sep 2019
Accepted: 18 Sep 2020
Published online: 30 Apr 2021 *

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