污水处理IFAS工艺中生物载体对N2O的减排作用

摘要/Abstract

摘要： 为满足污水处理厂传统工艺升级改造的需求，添加生物载体构建生物膜-活性污泥复合（IFAS）工艺是强化污染物去除效果、提高微生物多样性和系统稳定性的高效处理方式。由于IFAS工艺可促进同步硝化反硝化，有益于低N₂O排放的特殊氨氧化微生物的成长繁殖，因而相较于单一工艺表现出降低N₂O排放的潜力。总结了过去关于IFAS工艺在污水处理工艺提质增效、降低N₂O排放等领域的重要论述，重点分析了IFAS工艺中N₂O的产生机制及生物载体缓解N2O产生的作用机理，最后为IFAS工艺未来在协同降碳减污方面的研究方向提出展望。

关键词: 污水处理, 生物膜-活性污泥复合工艺, 生物载体, 氧化亚氮, 减排作用

Abstract: In order to meet the current demand for upgrading traditional processes in municipal wastewater treatment plants, the integrated fixed-film activated sludge (IFAS) process with bio-carriers is an efficient treatment method to strengthen the pollutant removal effect and improve microbial diversity and system stability. In addition, the IFAS process has the potential to reduce N₂O emissions compared to a single process, since it promoted simultaneous nitrification and denitrification and was beneficial to the growth and reproduction of specific ammonia-oxidizing microorganisms with low N₂O emissions. This article summarized important discussions of IFAS process in the field of improving quality and efficiency of wastewater treatment processes and N₂O emission reduction etc.. Then, the mechanism of N₂O production in IFAS process and the mitigation mechanism of N₂O emission by bio-carriers were analyzed. Finally, the future research direction of IFAS process in synergistic carbon reduction and pollution reduction was prospected.

Key words: wastewater treatment, IFAS process, biocarriers, N₂O, reduction effect

陈慧玲高辉陈加波王洪臣齐鲁刘国华敖梓鼎牛晓旭. 污水处理IFAS工艺中生物载体对N₂O的减排作用[J]. 石油炼制与化工, 2023, 54(7): 113-122.

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污水处理IFAS工艺中生物载体对N₂O的减排作用

EFFECT OF BIOCARRIERS ON N₂O EMISSION REDUCTION IN IFAS PROCESS FOR WASTEWATER TREATMENT

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