DOI QR코드

DOI QR Code

Aerobic Granules for the Effective Oxidation of Ammonium Nitrogen

Lee, Hyo Lee;Ryu, Jae Hun;Lee, Youn Pyo;Kim, Tae Seok;Kim, Min Kyeong;Ahn, Do Thi Ngoc;Ahn, Dae Hee

  • Received : 2013.05.24
  • Accepted : 2013.11.30
  • Published : 2014.03.30

Abstract

In this study, aerobic granules were applied to a lab-scale aerobic granule sludge airlift reactor (AGSAR) and the ammonium nitrogen oxidation performance was evaluated at different ammonium nitrogen loading rate (NLR). At least 99% of the initial ammonium nitrogen was oxidized at an NLR of 0.27 and 0.53 kg $NH_4{^+}-N/m^3{\cdot}day$, for both aerobic granules (control), and nitrifying aerobic granules (NAGs). The ammonium nitrogen oxidation deteriorated, when the NLR was increased to 1.07 kg $NH_4{^+}-N/m^3{\cdot}day$. The NAGs were characterized by complete nitrification, while partial nitrification was observed in the control.

Keywords

Aerobic granular sludge;Ammonium loading rate;Coating;Nitrification;Nitrifying bacteria

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Acknowledgement

Supported by : National Research Foundation of Korea