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首页> 外文期刊>Biotechnology Advances: An International Review Journal >Technologies for biological removal and recovery of nitrogen from wastewater
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Technologies for biological removal and recovery of nitrogen from wastewater

机译：从废水中生物去除和氮的生物去除和恢复技术

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摘要

Water contamination is a growing environmental issue. Several harmful effects on human health and the environment are attributed to nitrogen contamination of water sources. Consequently, many countries have strict regulations on nitrogen compound concentrations in wastewater effluents. Wastewater treatment is carried out using energy- and cost-intensive biological processes, which convert nitrogen compounds into innocuous dinitrogen gas. On the other hand, nitrogen is also an essential nutrient. Artificial fertilizers are produced by fixing dinitrogen gas from the atmosphere, in an energy-intensive chemical process. Ideally, we should be able to spend less energy and chemicals to remove nitrogen from wastewater and instead recover a fraction of it for use in fertilizers and similar applications. In this review, we present an overview of various technologies of biological nitrogen removal including nitrification, denitrification, anaerobic ammonium oxidation (anammox), as well as bioelectrochemical systems and microalgal growth for nitrogen recovery. We highlighted the nitrogen removal efficiency of these systems at different temperatures and operating conditions. The advantages, practical challenges, and potential for nitrogen recovery of different treatment methods are discussed.
机译：水污染是一种不断增长的环境问题。对人体健康和环境的几种有害影响归因于水源的氮污染。因此，许多国家对废水流出物中的氮化合物浓度有严格的规定。废水处理采用能量和成本密集的生物方法进行，将氮气转化为无害的二煤气。另一方面，氮也是必不可少的营养素。在能量密集的化学过程中，通过从大气中从大气中固定二煤气来生产人造肥料。理想情况下，我们应该能够花费更少的能量和化学物质来消除废水中的氮，而是回收它的一小部分用于肥料和类似的应用。在本文中，我们概述了生物学氮去除的各种技术，包括硝化，脱氮，厌氧铵氧化（厌氧氧化铵氧化（厌氧毒素）以及用于氮气回收的微观生长。我们强调了这些系统在不同温度和操作条件下的氮气去除效率。讨论了不同治疗方法的优点，实际挑战和氮培养的潜力。

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