Please use this identifier to cite or link to this item: http://repository.vnu.edu.vn/handle/VNU_123/26661
Title: Simultaneous nitrification denitrification in a Batch Granulation Membrane Airlift Bioreactor
Authors: Vijayalayan, Prashanthini
Bui Xuan Thanh
Visvanathan, Chettiyappan
Keywords: Aerobic granules;Batch Granulation Membrane Airlift;Bioreactor (BG-MABR);Extracellular polymeric substances (EPS);Fouling;Granule disintegration
Issue Date: 2014
Publisher: ELSEVIER SCI LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
Citation: ISIKNOWLEDGE
Abstract: This study investigates the performance of a batch aerobic granulation system coupled with membrane airlift bioreactor (MABR). Performance of the system was examined in terms of organic carbon and ni-trogen removals, and membrane fouling. It was observed that the removal of organic carbon and ni-trogen were 99% and 61% respectively with 35% of denitrification when the system was operated at organic and nitrogen loadings of 1.5 kg TOC/m 3 .d and 0.4 kg NH þ 4eN/m 3 .d respectively. The retention of soluble EPS produced due to deflocculation and cell lysis phenomena was the main cause for membrane fouling. Besides, it was noted that the denitrification and fouling control could be directly linked to the stability of aerobic granules as high soluble EPS production was observed during the granule breakage which resulted in rapid fouling in the membrane. In addition, the external electron donor supply can augment the denitrification process in MABR where both aerobic and anoxic zones exist.
Description: INTERNATIONAL BIODETERIORATION & BIODEGRADATION Volume: 95 Special Issue: SI Pages: 139-143 Part: A Published: NOV 2014
URI: http://www.sciencedirect.com/science/article/pii/S0964830514001553
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