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Received July 16, 2018
Accepted December 6, 2018
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Development of sequential batch ozonated adsorptive membrane bioreactor to mitigate fouling with reduced energy consumption
Kavitha Nagarasampatti Palani
Darshini Saravanan1
Kamalakannan Vasantha Palaniappan
Shanmuga Sundar
N Balasubramanian†
Department of Chemical Engineering, AC Tech, Anna University, Chennai, India 1Department of Chemistry, Women’s Christian College, Chennai, India
nbsbala@annauniv.edu, nbsbala@gmail.com
Korean Journal of Chemical Engineering, February 2019, 36(2), 265-271(7), 10.1007/s11814-018-0206-6
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Abstract
The present study focuses on overcoming the drawback as fouling in a membrane bioreactor (MBR), which can be alleviated by integrating advanced oxidation process, adsorption, and biofilm carriers in the activated sludge process. The optimal sludge retention time, carbon and ozone dosage was 150 minutes, 15 g and 1.5 Lmin-1, respectively. The percentage removal was observed to be above 90% for chemical oxygen demand and total organic carbon whereas for total dissolved solids was only 40% under transmembrane pressure of 20 kPa. The increase in permeate flux was 30% as compared to MBR. Sequential batch membrane bioreactor (SBMBR) showed 12% reduction in energy consumption for three hour operation at the flow rate of 0.72 L/h (transmembrane pressure 20 kPa), and it was confirmed in the SEM of carbon, membrane, UV, CV and HPLC also. The energy consumption required also confirms the less internal fouling via the extended backwash of four hours.
Keywords
References
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