A novel method of simultaneous NH4+ and NO3- removal using Fe cycling as a catalyst: Feammox coupled with NAFO

被引：88

作者：

Li, Xiang ^{[1
,2
]}

Yuan, Yan ^{[1
,2
]}

Huang, Yong ^{[1
,2
]}

Liu, Heng-wei ^{[3
]}

Bi, Zhen ^{[1
,2
]}

Yuan, Yi ^{[1
,2
]}

Yang, Peng-bin ^{[1
,2
]}

机构：

[1] Suzhou Univ Sci & Technol, Sch Environm Sci & Engn, Suzhou 215009, Peoples R China

[2] Natl & Local Joint Engn Lab Municipal Sewage Reso, Suzhou 215009, Peoples R China

[3] Suzhou Univ Sci & Technol, Sch Chem Biol & Mat Engn, Suzhou 215009, Peoples R China

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 2018年 / 631-632卷

关键词：

Feammox; Nitrate-dependent Fe(II) oxidizing process (NAFO); Anammox; Fe cycling; Catalyst; NITROGEN REMOVAL; NITRATE REDUCTION; IRON REDUCTION; WASTE-WATER; ANAMMOX; AMMONIUM; OXIDATION; DENITRIFICATION; NITRITE; SULFUR;

D O I：

10.1016/j.scitotenv.2018.03.018

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The feasibility of using Feammox coupled with nitrate-dependent Fe(II) oxidizing (NAFO) to cause the simultaneous conversion of NH4+ and NO3- was explored by inoculation with Feammox sludge and the use Fe cycling as catalyst. After 61 days operation, the simultaneous conversion of NO3- and NI-Li occurred with the presence of interconversion between Fe(III) and Fe(II). The conversion ratio of NH4+ to NO3- stabilized at 0.9-1. The results of isotopic tracing and microbial diversity analysis indicated that NH4+ was first oxidized to NO3- by Fe(III), then NO3- was reduced to NO2- and N-2 by the Fe(II) produced in Feammox process, and finally, the NO(2)(-)produced in NAFO process underwent an Anammox process with the remaining NI-Li to yield N-2. The results showed the simultaneous continuous conversion process of NO3- and NH4+ with limited Fe as a catalyst was a coupled process of Feammox, Anammox, and NAFO under the anaerobic conditions. (C) 2018 Elsevier B.V. All lights reserved.

引用

页码：153 / 157

页数：5

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