铁泥资源化实现铁厌氧氨氧化及其机理初探

李豪; 王进; 马丁; 方金涛; 岳正波

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中国环境科学 ›› 2023, Vol. 43 ›› Issue (10) : 5310-5319.

固体废物

铁泥资源化实现铁厌氧氨氧化及其机理初探

李豪, 王进, 马丁, 方金涛, 岳正波

作者信息 +

Feammox based on the resource utilization of waste iron sludge and its mechanism

LI Hao, WANG Jin, MA Ding, FANG Jin-tao, YUE Zheng-bo

Author information +

文章历史 +

摘要

以铁碳微电解废铁泥为原料制备轻质烧结陶粒填充于厌氧生物反应器中，在实现废铁泥资源化利用的同时实现了低C/N废水的氨氮厌氧氧化.反应器经过60d的驯化，出水趋于稳定，NH₄⁺-N平均去除率接近100%，TN平均去除率为14.19%，NH₄⁺-N在反应器中实现了厌氧氧化，出水中的N元素以NO₃^--N为主.反应器中的Fe-N耦合作用机制分析表明在反应器底部主要发生的生化过程为有机物水解、异化铁还原和NDFO反应，中部主要发生Feammox和NDFO反应，顶部主要发生NDFO反应.

Abstract

Lightweight sintered ceramsite were prepared using iron-carbon microelectrolysis sludge as raw material and filled in an anaerobic bioreactor. This process achieved the resource utilization of waste iron sludge and the anaerobic oxidation of low C/N wastewater. After 60 days of acclimation, the effluent water reached a stable state, with an average removal rate of NH₄⁺-N close to 100% and an average removal rate of TN of 14.19%. NH₄⁺-N was anaerobically oxidized in the reactor, and NO₃^--N became the main form of nitrogen in the effluent. Analysis of the Fe-N coupling mechanism in the reactor showed that biochemical processes such as organic hydrolysis, iron reduction, and NDFO reactions primarily occurred at the bottom, Feammox and NDFO reactions mainly occurred in the middle, and NDFO reactions mainly occurred at the top.

导出引用

李豪, 王进, 马丁, 方金涛, 岳正波. 铁泥资源化实现铁厌氧氨氧化及其机理初探[J]. 中国环境科学. 2023, 43(10): 5310-5319

LI Hao, WANG Jin, MA Ding, FANG Jin-tao, YUE Zheng-bo. Feammox based on the resource utilization of waste iron sludge and its mechanism[J]. China Environmental Science. 2023, 43(10): 5310-5319

中图分类号： X703.1

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