Open AccessPerformance of Aerobic Granular Sludge for Domestic Wastewater Treatment
Author(s) -
Laila Dina Amalia Purba,
Noorul Hudai Abdullah,
Mohd Hakim Ab Halim,
Ali Yuzir,
Arash Zamyadi
Publication year - 2019
Publication title -
international journal of innovative technology and exploring engineering
Language(s) - English
Resource type - Journals
ISSN - 2278-3075
DOI - 10.35940/ijitee.l3360.1081219
Subject(s) - settling , wastewater , granulation , pulp and paper industry , sewage treatment , activated sludge , sequencing batch reactor , biomass (ecology) , sewage sludge treatment , waste management , chemistry , environmental science , environmental engineering , materials science , biology , ecology , composite material , engineering
Aerobic granular sludge can be used to treat various types of wastewater, such as industrial, municipal and domestic wastewater. This study investigated the treatment of low-strength domestic wastewater while simultaneously developed aerobic granular sludge in a sequencing batch reactor (SBR). Activated sludge was used as the seeding for granulation. The results indicated good COD and ammoniacal nitrogen removal at 72% and 73%, respectively. Aerobic granular sludge was successfully developed with low sludge volume index (SVI30) of 29 mL/g, which demonstrated an excellent settling property of aerobic granular sludge. Biomass concentration increased significantly compared to the seed sludge, indicating high biomass density in the SBR system. Settling velocity of aerobic granular sludge was significantly higher compared to the conventional activated sludge. This study showed the feasibility of aerobic granular sludge to be developed using low-strength domestic wastewater. Moreover, this study demonstrated the long-term application of aerobic granular sludge in domestic wastewater treatment.