Impact of partial nitritation degree and C/N ratio on simultaneous Sludge Fermentation, Denitrification and Anammox process.
Impact of partial nitritation degree and C/N ratio on simultaneous Sludge Fermentation, Denitrification and Anammox process.
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DOI：
10.1016/j.biortech.2016.07.114
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发表时间：
2016-11
影响因子：
11.4
通讯作者：
Bo Wang;Yongzhen Peng;Yuanyuan Guo;Yue Yuan;Mengyue Zhao;Shu-ying Wang
中科院分区：
文献类型：
--
作者：
Bo Wang;Yongzhen Peng;Yuanyuan Guo;Yue Yuan;Mengyue Zhao;Shu-ying Wang
本研究提出了一种新的工艺（即PN/SFDA）去除低C/N生活污水中的氮。该工艺主要包括两个反应器，一个用于部分亚硝化的预序批式反应器（简称PN-SBR）和一个用于污泥发酵产生的碳源的一体化反硝化和厌氧氨氧化的缺氧反应器（简称SFDA）。在长期的好氧过程中，PN-SBR出水中的NO2-/NH 4+比值（即NO2--N/NH 4 +-N摩尔比）随着好氧时间的延长而逐渐从0.2增加到37，即部分亚硝化可以转化为完全亚硝化。研究了部分亚硝化程度对SFDA工艺的影响，结果表明，SFDA反应器中NO2−/NH 4+比值在2 ~ 10之间有利于反硝化和厌氧氨氧化共存，反硝化对脱氮的贡献大于厌氧氨氧化。进一步的批量试验表明，厌氧氨氧化与反硝化在低C/N（在本研究中为1.0）合作良好。
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).