Performance and optimization of lab-scale membrane bioreactors for synthetic municipal wastewater. Issue 60 (25th December 2016)

• Record Type: Journal Article
• Authors: Imran Khan, Sara; Hashmi, Imran; Khan, Sher Jamal; Henderson, Rita
• Is Part Of: Desalination and water treatment. Volume 57:Issue 60(2016)
• Page Start: 29193
• Page End: 29200
• Publication Date: 2016-12-25
• Subjects: Wastewater treatment -- Membrane bioreactor -- Biokinetic coefficients -- Monod equation; Saline water conversion -- Periodicals; Saline water conversion; Water -- Purification; Periodicals; 628.167
• DOI: 10.1080/19443994.2016.1165148
• Languages: English
• ISSNs: 1944-3994

Abstract

Abstract: This study aimed to determine biokinetic coefficients and efficiency of three submerged membrane bioreactors (MBRs) comprising a conventional MBR, moving bioflim MBR (MB-MBR), and anoxic-oxic MBR (A/O-MBR) operated at laboratory scale for synthetic municipal wastewater (500 mg/L glucose chemical oxygen demand) at a hydraulic retention time of 8 h. The activated sludge was collected from sewage treatment plant I-9, Islamabad, and was acclimatized with synthetic wastewater for a time period of 60 d. The physicochemical and biological parameters were determined as per standard methods. The Monod rate equation was applied for estimating specific growth rate ( μ ), decay rate constant ( K d ), yield coefficient ( Y ), half-velocity constant ( K s ), and maximum specific growth rate ( μ m ). The A/O-MBR showed the highest removal efficiencies of total organic carbon and nitrogen (94 and 82% respectively) and also maximum kinetic coefficients were obtained and values of Y, K d, K s, and μ max coefficients were 0.77 mg/mg, 0.066 d −1, 271 mg/l, and 1.44 d −1, respectively. Therefore, the study aimed at optimizing MBRs system by optimization of the kinetics.