Recent advances in simultaneous nitrification and denitrification for nitrogen and micropollutant removal: a review

IF 3.1 4区生物学 Q2 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Biodegradation Pub Date : 2023-03-10 DOI:10.1007/s10532-023-10015-8

Susan N. James, Arya Vijayanandan

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引用次数: 5

Abstract

Simultaneous Nitrification and Denitrification (SND) is a promising process for biological nitrogen removal. Compared to conventional nitrogen removal processes, SND is cost-effective due to the decreased structural footprint and low oxygen and energy requirements. This critical review summarizes the current knowledge on SND related to fundamentals, mechanisms, and influence factors. The creation of stable aerobic and anoxic conditions within the flocs, as well as the optimization of dissolved oxygen (DO), are the most significant challenges in SND. Innovative reactor configurations coupled with diversified microbial communities have achieved significant carbon and nitrogen reduction from wastewater. In addition, the review also presents the recent advances in SND for removing micropollutants. The micropollutants are exposed to various enzymes due to the microaerobic and diverse redox conditions present in the SND system, which would eventually enhance biotransformation. This review presents SND as a potential biological treatment process for carbon, nitrogen, and micropollutant removal from wastewater.

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同时硝化反硝化除氮及微污染物研究进展综述

同时硝化反硝化(SND)是一种很有前途的生物脱氮工艺。与传统的除氮工艺相比，SND由于结构占地面积小，氧气和能量需求低，具有成本效益。这篇综述总结了目前关于SND的基本知识、机制和影响因素。在絮凝体内创造稳定的好氧和缺氧条件，以及优化溶解氧(DO)，是SND中最重要的挑战。创新的反应器配置与多样化的微生物群落相结合，已经实现了废水中碳和氮的显著减少。此外，还介绍了SND法去除微污染物的最新进展。由于SND系统中存在微氧和多种氧化还原条件，微污染物暴露于各种酶中，最终会增强生物转化。SND是一种潜在的去除废水中碳、氮和微污染物的生物处理工艺。

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来源期刊

Biodegradation 工程技术-生物工程与应用微生物

CiteScore

5.60

自引率

0.00%

发文量

审稿时长

6 months

期刊介绍： Biodegradation publishes papers, reviews and mini-reviews on the biotransformation, mineralization, detoxification, recycling, amelioration or treatment of chemicals or waste materials by naturally-occurring microbial strains, microbial associations, or recombinant organisms. Coverage spans a range of topics, including Biochemistry of biodegradative pathways; Genetics of biodegradative organisms and development of recombinant biodegrading organisms; Molecular biology-based studies of biodegradative microbial communities; Enhancement of naturally-occurring biodegradative properties and activities. Also featured are novel applications of biodegradation and biotransformation technology, to soil, water, sewage, heavy metals and radionuclides, organohalogens, high-COD wastes, straight-, branched-chain and aromatic hydrocarbons; Coverage extends to design and scale-up of laboratory processes and bioreactor systems. Also offered are papers on economic and legal aspects of biological treatment of waste.