START-UP OF A COMPLETELY AUTOTROPHIC NITROGEN REMOVAL OVER NITRITE PROCESS ENHANCED BY MAGNETIC FIELD

CHEN Yun-fan; QIAN Meng-meng; KANG Zi-wei; DING Jia-hui; CHEN Jing; JIA Wen-lin

doi:10.13205/j.hjgc.202008024

Volume 38 Issue 8

Nov. 2020

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2020 > 38(8): 142-146

CHEN Yun-fan, QIAN Meng-meng, KANG Zi-wei, DING Jia-hui, CHEN Jing, JIA Wen-lin. START-UP OF A COMPLETELY AUTOTROPHIC NITROGEN REMOVAL OVER NITRITE PROCESS ENHANCED BY MAGNETIC FIELD[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(8): 142-146. doi: 10.13205/j.hjgc.202008024

Citation:

CHEN Yun-fan, QIAN Meng-meng, KANG Zi-wei, DING Jia-hui, CHEN Jing, JIA Wen-lin. START-UP OF A COMPLETELY AUTOTROPHIC NITROGEN REMOVAL OVER NITRITE PROCESS ENHANCED BY MAGNETIC FIELD[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(8): 142-146. doi: 10.13205/j.hjgc.202008024

Citation:

CHEN Yun-fan, QIAN Meng-meng, KANG Zi-wei, DING Jia-hui, CHEN Jing, JIA Wen-lin. START-UP OF A COMPLETELY AUTOTROPHIC NITROGEN REMOVAL OVER NITRITE PROCESS ENHANCED BY MAGNETIC FIELD[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(8): 142-146. doi: 10.13205/j.hjgc.202008024

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START-UP OF A COMPLETELY AUTOTROPHIC NITROGEN REMOVAL OVER NITRITE PROCESS ENHANCED BY MAGNETIC FIELD

doi: 10.13205/j.hjgc.202008024

School of Chemistry and Materials Science, Jiangsu Normal University, Xuzhou 221116, China

Received Date: 2019-05-05

Abstract

Abstract

In order to enhance the nitrogen removal performance of completely autotrophic nitrogen removal over nitrite (CANON) process, membrane bioreactors (MBRs) were constructed to start the CANON process in this study. Static magnetic field (MF) was applied to enhance the CANON process, and the nitrogen removal performance and the mechanism were analyzed. The results showed that MF with suitable intensity enhanced the nitrogen removal rate (NRR) and shortened the start-up period during the CANON process. The average NRR during the late period reached 49.5 g/(m³·d) with the exposure to MF, which was 1.45 times higher than the control. At low temperature, the CANON process could keep high activity with the exposure to MF, and the average NRR was 2.88 times of the control. The MF could stimulate the synthesis and secretion of extracellular polymer (EPS) of sludge, and enhance the contents of protein in EPS. Meanwhile the zeta potential of the mixture in the reactor decreased due to the application of MF, which was conducive to the aggregation of the activated sludge. The oxygen concentration gradient in the flocs favored the coexistence of different microorganisms during CANON process, resulting in the enhancement of nitrogen removal.
- magnetic field,
- CANON process,
- nitrogen removal rate,
- EPS

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References(19)

References

LACKNER S, GILBERT E M, VLAEMINCK S E, et al. Full-scale partial nitritation/anammox experiences:an application survey[J]. Water Research, 2014, 55:292-303.

LIU T, LI D, ZHANG J, et al. Effect of temperature on functional bacterial abundance and community structure in CANON process[J]. Biochemical Engineering Journal, 2016, 105:306-313.

WANG Z Z, LIANG H, QU F S, et al. Start up of a gravity flow CANON-like MBR treating surface water under low temperature[J]. Chemical Engineering Journal, 2013, 217:466-474.

YUE X, YU G P, LU Y Q, et al. Effect of dissolved oxygen on nitrogen removal and the microbial community of the completely autotrophic nitrogen removal over nitrite process in a submerged aerated biological filter[J]. Bioresource Technology, 2018, 254:67-74.

黄京, 徐亚慧, 张亮, 等. CANON工艺快速启动和运行过程中anammox群落变化研究[J]. 环境工程, 2014, 32(12):36-41.

FILIPIC J, KRAIGHER B, TEPUS B, et al. Effect of low-density static magnetic field on the oxidation of ammonium by Nitrosomonas europaea and by activated sludge in municipal wastewater[J]. Food Technology and Biotechnology, 2015, 53(2):201-206.

周晓玮, 陆宇苗, 陈露, 等. 磁场对短程硝化工艺运行效果的影响[J]. 环境工程, 2017, 35(3):34-37

,42.

LIU S T, YANG F L, MENG F G, et al. Enhanced anammox consortium activity for nitrogen removal:impacts of static magnetic field[J]. Journal of Biotechnology, 2008, 138(3/4):96-102.

ZHANG X J, LI D, LIANG Y H, et al. Performance and microbial community of completely autotrophic nitrogen removal over nitrite (CANON) process in two membrane bioreactors (MBR) fed with different substrate levels[J]. Bioresource Technology, 2014, 152:185-191.

国家环境保护总局. 水和废水监测分析方法编委会. 水和废水监测分析方法[M]. 4版.北京:中国环境科学出版社, 2002.

CHEN Y N, WU Y X, WANG D B, et al. Understanding the mechanisms of how poly aluminium chloride inhibits short-chain fatty acids production from anaerobic fermentation of waste activated sludge[J]. Chemical Engineering Journal, 2018, 334:1351-1360.

DESMOND P, BEST J P, MORGENROTH E, et al. Linking composition of extracellular polymeric substances (EPS) to the physical structure and hydraulic resistance of membrane biofilms[J]. Water Research, 2018, 132:211-221.

SUI Q W, LIU C, ZHANG J Y, et al. Response of nitrite accumulation and microbial community to free ammonia and dissolved oxygen treatment of high ammonium wastewater[J]. Applied Microbiology and Biotechnology, 2016, 100(9):4177-4187.

NIU C, LIANG W H, REN H Q, et al. Enhancement of activated sludge activity by 10~50 mT static magnetic field intensity at low temperature[J]. Bioresource Technology, 2014, 159:48-54.

MORE T T, YADAV J S S, YAN S, et al. Extracellular polymeric substances of bacteria and their potential environmental applications[J]. Journal of Environmental Management, 2014, 144:1-25.

DING Z J, BOURVEN I, GUIBAUD G, et al. Role of extracellular polymeric substances (EPS) production in bioaggregation:application to wastewater treatment[J]. Applied Microbiology and Biotechnology, 2015, 99(23):9883-9905.

宋成康, 王亚宜, 韩海成, 等. 温度降低对厌氧氨氧化脱氮效能及污泥胞外聚合物的影响[J]. 中国环境科学, 2016, 36(7):2006-2013.

GEYIK A G, CECEN F. Variations in extracellular polymeric substances (EPS) during adaptation of activated sludges to new feeding conditions[J]. International Biodeterioration & Biodegradation, 2015, 105:137-145.

FLEMMING H C, WINGENDER J. The biofilm matrix[J]. Nature Reviews Microbiology, 2010, 8(9):623-633.

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