CHARACTERISTICS OF ANAEROBIC AMMONIUM OXIDATION INITIATED BY ANAEROBIC GRANULAR SLUDGE

MAO Hong-yu; XIE Li; LU Xi; YIN Zi; DREWNOWSKI Jakub

doi:10.13205/j.hjgc.202001014

Volume 38 Issue 1

Mar. 2020

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MAO Hong-yu, XIE Li, LU Xi, YIN Zi, DREWNOWSKI Jakub. CHARACTERISTICS OF ANAEROBIC AMMONIUM OXIDATION INITIATED BY ANAEROBIC GRANULAR SLUDGE[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(1): 93-98,104. doi: 10.13205/j.hjgc.202001014

Citation:

MAO Hong-yu, XIE Li, LU Xi, YIN Zi, DREWNOWSKI Jakub. CHARACTERISTICS OF ANAEROBIC AMMONIUM OXIDATION INITIATED BY ANAEROBIC GRANULAR SLUDGE[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(1): 93-98,104. doi: 10.13205/j.hjgc.202001014

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CHARACTERISTICS OF ANAEROBIC AMMONIUM OXIDATION INITIATED BY ANAEROBIC GRANULAR SLUDGE

doi: 10.13205/j.hjgc.202001014

MAO Hong-yu^1,2,
XIE Li^{1,2
,
,},
LU Xi^1,2,
YIN Zi^1,2,
DREWNOWSKI Jakub

1. Tongji University, the Yangtze River Water Environment Key Laboratory of the Ministry of Education, Shanghai 200092, China;
2. College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China;
3. Faculty of Civil and Environmental Engineering, Gdansk University of Technology, 80-233 Gdansk, Poland

Received Date: 2019-07-15

Abstract

Abstract

Two different mixed sludge, anaerobic granular sludge (R1), and anaerobic granular sludge with mature anaerobic ammonium oxidation (ANAMMOX) sludge (R2) were used as the inocula in two up-flow reactors to enrich anaerobic ammonia-oxidizing bacteria (AnAOB), respectively. The total nitrogen removal rate of R1 reached 74% in 99 days, while R2 remained above 70% in only 48 days. The content of extracellular polymeric substance (EPS) in the sludge was found to increase with the increase of the influent nitrogen loading, which might attribute to the sludge granulation. It was interesting to notice that the dominant AnAOB genera in two systems were different, i.e. Candidatus Kuenenia (7.92%) in R1, and Candidatus Brocadia (15.64%) in R2. Candidatus Kuenenia also existed in R2, accounting for 3.02%. R1 maintained considerable denitrification efficiency in the case of lower anaerobic ammonium oxidizing bacteria abundance and might have more potential for long-term culture.
- up-flow reactor,
- granular sludge,
- influent load,
- anammox community

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References(20)

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