Key Laboratory of Urban Stormwater System and Water Environment (Ministry, of Education), Beijing University of Civil Engineering and Architecture, Beijing 100044, China.
School of Environmental Science and Technology, Guilin University of Technology, Guilin 541004, China.
Sci Total Environ. 2018 Aug 15;633:745-751. doi: 10.1016/j.scitotenv.2018.03.213. Epub 2018 Mar 28.
Anaerobic ammonia oxidation (anammox) has shown great promise for nitrogen removal in low C/N wastewater such as landfill leachate. However, 11% of NO-N is stoichiometrically produced, which decreases the total nitrogen (TN) removal efficiency. In this study, a strategy for post anammox was developed to effectively remove TN from leachate. A tandem conversion of NO-N to NO-N (partial denitrification) was accomplished by supplying substrate for subsequent anammox, by supplementing the electron donor deficient condition. This process greatly improved NH-N and TN removal from leachate, reaching a 95% efficiency. Quantitative real-time polymerase chain reaction results showed that a high abundance of anammox bacteria, with a titer of 10 copy numbers/L, was enriched, accounting for 9.66% of the total bacterial community, and indicating the success of this novel strategy for the TN removal in leachate.
厌氧氨氧化（anammox）在去除低 C/N 废水（如垃圾渗滤液）中的氮方面显示出巨大的潜力。然而，11%的 NO-N 是化学计量产生的，这降低了总氮（TN）去除效率。在这项研究中，开发了一种 post-anammox 的策略，以有效地从渗滤液中去除 TN。通过提供后续 anammox 的底物，补充电子供体不足的条件，实现了从 NO-N 到 NO-N 的串联转化（部分反硝化）。这一过程极大地提高了渗滤液中 NH-N 和 TN 的去除效率，达到了 95%。定量实时聚合酶链反应结果表明，富集了高丰度的 anammox 细菌，浓度为 10 拷贝数/L，占总细菌群落的 9.66%，表明该 novel strategy 用于渗滤液中 TN 的去除是成功的。
