Advanced nitrogen removal with simultaneous Anammox and denitrification in sequencing batch reactor.
In this study, a sequencing batch reactor (SBR) was used to achieve advanced nitrogen removal by simultaneous Anammox and denitrification processes. During the entire experiment, the Anammox microorganisms aggregated in the reactor as wall growth. Nitrogen removal was improved due to the reduction of nitrate, and the maximum total nitrogen (TN, including ammonia, nitrite and nitrate nitrogen) removal efficiency of 97.47% was obtained at C/N of 2. However, the sequentially increased organic matter resulted in a poor TN removal performance due to the suppression of Anammox. Fortunately, the Anammox activity completely resumed quickly after stopping dosing organic matter. PCR analysis results revealed that the Anammox bacteria gene copy number was not significantly reduced during the inhibition, which might explain the quick recover.
Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China.
Rui
R
Du
Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China. Electronic address: pyz@bjut.edu.cn.
Yongzhen
Y
Peng
Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China.
Shenbin
S
Cao
Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China.
Chengcheng
C
Wu
Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China.
Dongchen
D
Weng
Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China.
Shuying
S
Wang
Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100124, China.
Jianzhong
J
He
D000641:Ammonia / Q000378:metabolism*; D000693:Anaerobiosis; D061249:Batch Cell Culture Techniques / Q000295:instrumentation*; D001673:Biodegradation, Environmental; D019149:Bioreactors / Q000382:microbiology*; D058440:Denitrification; D009584:Nitrogen / Q000302:isolation & purification*; D009930:Organic Chemicals / Q000302:isolation & purification; D010084:Oxidation-Reduction
D009930:Organic Chemicals; D000641:Ammonia; D009584:Nitrogen
Anammox; Denitrification; Nitrogen removal; Organic matter; Sequencing batch reactor