基于Feammox的生物膜反应器性能研究

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Abstract

The microbial reaction of ammonium oxidation coupling with iron reduction (Feammox) were discovered recently. However, little information is found to prove the removal efficiency of ammonium from simulate wastewater in the Feammox biofilm reactor. In this study, the effects of different ammonium concentration on Feammox biofilm reactor under closed condition and their denitrification reaction characteristics under continuous feeding condition were investigated. The results showed that the simulate wastewater with ammonium concentration of 75 mg/L reached the maximum ammonium removal, with the removal rate of 41.49% in 15 days. When the reactor was running continuously for 90 days, with inflowing NH₄⁺-N concentration of 75 mg/L and 10 days HRT, the maximum ammonium removal reached 33.78%. Feammox biofilm reaction can be divided two stages. In first stage (10~60 d), ammonium was possibly oxidized to nitrogen, and the denitrification reaction carried out simultaneously. In second stage (60~90 d), the weakening denitrification reaction resulted in the accumulation of NO₃^--N. The results of 16SrRNA bacterial sequencing showed that the Feammox reaction was drove by Acidimicrobium and Exiguobacterium.

Key words： Feammox biofilm reactor ammonium removal microflora

Received: 07 March 2017

PACS:

X703.1

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	Articles by authors
	WU Yin
	CHEN Chen
	MAO Xiao-yun
	PENG Xiao-chun

Cite this article:

WU Yin,CHEN Chen,MAO Xiao-yun等. Study on performance of the Feammox biofilm-reactor[J]. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(9): 3353-3362.

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http://manu36.magtech.com.cn/Jweb_zghjkx/EN/ OR http://manu36.magtech.com.cn/Jweb_zghjkx/EN/Y2017/V37/I9/3353

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