High rate nitrogen removal by ANAMMOX internal circulation reactor (IC) for old landfill leachate treatment

The Nhat Phan; Thi Thanh Van Truong; Nhu Biec Ha; Phuoc Dan Nguyen; Xuan Thanh Bui; Bao Trong Dang; Van Tuan Doan; Joonhong Park; Wenshan Guo; Huu Hao Ngo

doi:10.1016/j.biortech.2017.02.117

High rate nitrogen removal by ANAMMOX internal circulation reactor (IC) for old landfill leachate treatment

Bioresour Technol. 2017 Jun:234:281-288. doi: 10.1016/j.biortech.2017.02.117. Epub 2017 Feb 28.

Authors

Affiliations

¹ Faculty of Environment and Natural Resources, University of Technology, Vietnam National University-Ho Chi Minh, Viet Nam.
² Faculty of Environment and Natural Resources, University of Technology, Vietnam National University-Ho Chi Minh, Viet Nam. Electronic address: bxthanh@hcmut.edu.vn.
³ 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.
⁴ Department of Civil and Environmental Engineering, Yonsei University, Seoul, Republic of Korea.
⁵ Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Broadway, NSW 2007, Australia.
⁶ 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.

PMID: 28334664
DOI: 10.1016/j.biortech.2017.02.117

Abstract

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.

Keywords: ANAMMOX; IC; Leachate; Nitrogen removal and granular sludge.

MeSH terms

Bioreactors / microbiology
Denitrification
Nitrogen*
Sewage
Water Pollutants, Chemical*

Substances

Sewage
Water Pollutants, Chemical
Nitrogen