Using polyethylene Bio media as a new Floated media in a Biological Aerated Filter (BAF) to Treat Primary Effluent Wastewater

Document Type : Original Article

Authors

1 Department of Civil Engineering, Faculty of Engineering at Shoubra, Benha University, Cairo, Egypt

2 Professor of Sanitary and Environmental Engineering, Department of Civil Engineering, Faculty of Engineering at Shoubra, Benha University, Cairo, Egypt

3 Assistant Professor of Sanitary and Environmental Engineering, Department of Civil Engineering, Faculty of Engineering at Shoubra, Benha University, Cairo, Egypt

4 Lecturer of Sanitary and Environmental Engineering, Department of Civil Engineering, Faculty of Engineering at Shoubra, Benha University, Cairo, Egypt.

Abstract

A Biological aerate filter (BAF) is considered one of the most important applications used in wastewater treatment. Therefore, in this study, we were looking forward to discovering its ability to treat primary sedimentation tank effluent utilizing Polyethylene floated media called bio-media as a biological filter media, which is considered the novelty point of this research. This study and investigations operated for several months with a designed pilot plant installed and designed in Zenin Wastewater Treatment Plant located in Egypt. During the operation study of the BAF system, dissolved oxygen (DO) and flow rate with different hydraulic retention times (HRT) were studied. All these parameters were measured to investigate the ability of the BAF with polyethylene bio media on removal rates of chemical oxygen demand (COD), biological oxygen demand (BOD), and total suspended solids (TSS). The result showed that the optimum HRT was 72 minutes with the DO equal to 4.67±0.2 mg/l for COD and BOD removal rates; it yielded the largest removal efficiency of COD and BOD5 68.08 % and 69.18%, respectively. While the optimum HRT was 24 minutes with the DO equal to 4.67±0.2 mg/l for TSS removal efficiency, it recorded maximum removal efficiency up to 70.40 %.

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Volume 65, Issue 13 - Serial Number 13
Special Issue: Chemistry and Global Challenges
December 2022
  • Receive Date: 22 April 2022
  • Revise Date: 08 June 2022
  • Accept Date: 21 June 2022
  • First Publish Date: 21 June 2022