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首页> 外文期刊>Bioresource Technology: Biomass, Bioenergy, Biowastes, Conversion Technologies, Biotransformations, Production Technologies >Impact of partial nitritation degree and C/N ratio on simultaneous Sludge Fermentation, Denitrification and Anammox process
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Impact of partial nitritation degree and C/N ratio on simultaneous Sludge Fermentation, Denitrification and Anammox process

机译：部分硝化度和碳氮比对污泥同时发酵，反硝化和厌氧氨氧化工艺的影响

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摘要

This study presents a novel process (i.e. PN/SFDA) to remove nitrogen from low C/N domestic wastewater. The process mainly involves two reactors, a pre-Sequencing Batch Reactor for partial nitritation (termed as PN-SBR) and an anoxic reactor for integrated Denitrification and Anammox with carbon sources produced from Sludge Fermentation (termed as SFDA). During long-term Runs, NO2/NH4+ ratio (i.e. NO2-N/NH4+-N calculated by mole) in the PN-SBR effluent was gradually increased from 0.2 to 37 by extending aerobic duration, meaning that partial nitritation turning to full nitritation could be achieved. Impact of partial nitritation degree on SFDA process was investigated and the result showed that, NO2/NH4+ ratios between 2 and 10 were appropriate for the co-existence of denitrification and anammox together in the SFDA reactor, and denitrification instead of anammox contributed greater for nitrogen removal. Further batch tests indicated that anammox collaborated well with denitrification at low C/N (1.0 in this study). (C) 2016 Elsevier Ltd. All rights reserved.
机译：这项研究提出了一种从低C / N生活污水中去除氮的新方法（即PN / SFDA）。该过程主要涉及两个反应器，一个用于部分硝化的先序分批反应器（称为PN-SBR），一个用于通过污泥发酵产生的碳源将反硝化和厌氧氨氧化反应进行整合的缺氧反应器（称为SFDA）。在长期运行中，通过延长需氧时间，PN-SBR废水中的NO2 / NH4 +比（即以摩尔计算的NO2-N / NH4 + -N）从0.2逐渐增加到37，这意味着部分亚硝化转向完全硝化可能取得成就。研究了部分硝化度对SFDA工艺的影响，结果表明，在SFDA反应器中，NO2 / NH4 +的比值在2至10之间适合反硝化和厌氧氨氮共存，而反硝化代替厌氧氨氮对氮的贡献更大。去除。进一步的批处理测试表明，厌氧氨氧化与低C / N（本研究中为1.0）的反硝化效果很好。 （C）2016 Elsevier Ltd.保留所有权利。

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