PERFORMANCE OF MABR WITH ENHANCEMENT OF RAPID HN-AD BACTERIA ENRICHMENT IN TREATING HIGH AMMONIUM NITROGEN WASTEWATER

LUO Xiao-jing; XIAO Peng-ying; KANG Bao-wen; ZHOU Jing; Feng Li; ZHAO Tian-tao

doi:10.13205/j.hjgc.202009018

Volume 38 Issue 9

Nov. 2020

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2020 > 38(9): 106-112

LUO Xiao-jing, XIAO Peng-ying, KANG Bao-wen, ZHOU Jing, Feng Li, ZHAO Tian-tao. PERFORMANCE OF MABR WITH ENHANCEMENT OF RAPID HN-AD BACTERIA ENRICHMENT IN TREATING HIGH AMMONIUM NITROGEN WASTEWATER[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(9): 106-112. doi: 10.13205/j.hjgc.202009018

Citation:

LUO Xiao-jing, XIAO Peng-ying, KANG Bao-wen, ZHOU Jing, Feng Li, ZHAO Tian-tao. PERFORMANCE OF MABR WITH ENHANCEMENT OF RAPID HN-AD BACTERIA ENRICHMENT IN TREATING HIGH AMMONIUM NITROGEN WASTEWATER[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(9): 106-112. doi: 10.13205/j.hjgc.202009018

Citation:

LUO Xiao-jing, XIAO Peng-ying, KANG Bao-wen, ZHOU Jing, Feng Li, ZHAO Tian-tao. PERFORMANCE OF MABR WITH ENHANCEMENT OF RAPID HN-AD BACTERIA ENRICHMENT IN TREATING HIGH AMMONIUM NITROGEN WASTEWATER[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(9): 106-112. doi: 10.13205/j.hjgc.202009018

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PERFORMANCE OF MABR WITH ENHANCEMENT OF RAPID HN-AD BACTERIA ENRICHMENT IN TREATING HIGH AMMONIUM NITROGEN WASTEWATER

doi: 10.13205/j.hjgc.202009018

1. School of Chemistry and Chemical Engineering, Chongqing University of Technology, Chongqing 400054, China;
2. Chongqing Academy of Environmental Science, Chongqing 401147, China

Received Date: 2020-03-02

Abstract

Abstract

This study compared the performance of open-ended MABR and closed-ended MABR for high ammonium (NH₄⁺-N) synthetic wastewater treatment. The results demonstrated that the two MABRs rapidly formed biofilm in 8 days,but in the open-ended MABR, biofilm content and nitrogen removal efficiencies were higher than those of the closed-ended one. The average removal efficiencies of NH₄⁺-N, TN and COD in open-ended MABR for high ammonium synthetic wastewater treatment were all nearly 20% higher than those in closed-ended one, indicating a better nitrogen and COD removal performance. The high-throughput sequencing analysis revealed that rapid enrichment of HN-AD bacteria was achieved during the biofilm formation, and high abundances of HN-AD bacteria (22.1% of Acinetobacter, 43.2% of Pseudomonas) were kept during the stabilization of the open-ended MABR; but closed-ended MABR didn't achieve HN-AD bacteria enrichment. A higher DO condition provided by open-ended MABR promoted greater abundance of HN-AD bacteria than the close-ended one, to enhanced the treatment of high ammonium wastewater.
- membrane-aerated biofilm reactor,
- HN-AD bacteria,
- high ammonium wastewater,
- rapid enrichment

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References(38)

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