High rate nitrogen removal by ANAMMOX internal circulation reactor (IC) for old landfill leachate treatment.
This study aimed to evaluate the performance of a high rate nitrogen removal lab-scale ANAMMOX reactor, namely Internal Circulation (IC) reactor, for old landfill leachate treatment. The reactor was operated with pre-treated leachate from a pilot Partial Nitritation Reactor (PNR) using a high nitrogen loading rate ranging from 2 to 10kgNm-3d-1. High rate removal of nitrogen (9.52±1.11kgNm-3d-1) was observed at an influent nitrogen concentration of 1500mgNL-1. The specific ANAMMOX activity was found to be 0.598±0.026gN2-NgVSS-1d-1. Analysis of ANAMMOX granules suggested that 0.5-1.0mm size granular sludge was the dominant group. The results of DNA analysis revealed that Candidatus Kueneniastuttgartiensis was the dominant species (37.45%) in the IC reactor, whereas other species like uncultured Bacteroidetes bacterium only constituted 5.37% in the system, but they were still responsible for removing recalcitrant organic matter.
Faculty of Environment and Natural Resources, University of Technology, Vietnam National University-Ho Chi Minh, Viet Nam.
The Nhat
TN
Phan
Faculty of Environment and Natural Resources, University of Technology, Vietnam National University-Ho Chi Minh, Viet Nam.
Thi Thanh
TT
Van Truong
Faculty of Environment and Natural Resources, University of Technology, Vietnam National University-Ho Chi Minh, Viet Nam.
Nhu Biec
NB
Ha
Faculty of Environment and Natural Resources, University of Technology, Vietnam National University-Ho Chi Minh, Viet Nam.
Phuoc Dan
PD
Nguyen
Faculty of Environment and Natural Resources, University of Technology, Vietnam National University-Ho Chi Minh, Viet Nam. Electronic address: bxthanh@hcmut.edu.vn.
Xuan Thanh
XT
Bui
Institute of Research and Development, Duy Tan University, Da Nang, Viet Nam; Faculty of Environment and Natural Resources, University of Technology, Vietnam National University-Ho Chi Minh, Viet Nam.
Bao Trong
BT
Dang
Department of Civil and Environmental Engineering, Yonsei University, Seoul, Republic of Korea.
Van Tuan
VT
Doan
Department of Civil and Environmental Engineering, Yonsei University, Seoul, Republic of Korea.
Joonhong
J
Park
Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Broadway, NSW 2007, Australia.
Wenshan
W
Guo
Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Broadway, NSW 2007, Australia. Electronic address: h.ngo@uts.edu.au.
Huu Hao
HH
Ngo
D019149:Bioreactors / Q000382:microbiology; D058440:Denitrification; D009584:Nitrogen; D012722:Sewage; D014874:Water Pollutants, Chemical
D012722:Sewage; D014874:Water Pollutants, Chemical; D009584:Nitrogen
ANAMMOX; IC; Leachate; Nitrogen removal and granular sludge