National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China.
National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China.
J Hazard Mater. 2021 Aug 5;415:125506. doi: 10.1016/j.jhazmat.2021.125506. Epub 2021 Mar 6.
As a low consumption and high efficiency process, Partial Nitrification-Anammox/denitratation (PNAD) was applied to co-treat mature landfill leachate with municipal sewage for 300 days. Specifically, ammonia (670.2 ± 63.7 mg N/L) contained in mature landfill leachate was firstly oxidized to nitrite (611.5 ± 28.1 mg N/L) in sequence batch reactor (SBR); meanwhile, organic matter in municipal sewage was partially removed in another reactor (SBR); finally, nitrite produced (611.5 ± 28.1 mg N/L) in SBR and ammonia (53.1 ± 6.4 mg N/L) residing in pretreated municipal sewage were simultaneously degraded through combined Anammox-denitratation process in an up-flow anaerobic sludge bed (UASB). A satisfactory effluent quality of 10.3 mg/L TN was obtained after long-term operation, with Anammox and denitrification contributing to 86.2% and 5.8% nitrogen removal efficiency, respectively. Mass balance confirmed 67.2% nitrate generated from Anammox could be reduced to nitrite and in-situ reused. Anammox bacteria genes and nitrate reductase/nitrite reductase ratio were highly detected, accelerating combined Anammox-denitratation. Further, Ca. Brocadia triumph among various Anammox bacteria groups, increasing from 1.2% (day 120) to 3.6% (day 280).
作为一种低消耗、高效率的工艺，部分硝化-厌氧氨氧化/反硝化（PNAD）被应用于协同处理成熟垃圾渗滤液和城市污水，共运行 300 天。具体来说，成熟垃圾渗滤液中的氨（670.2±63.7mgN/L）首先在序批式反应器（SBR）中被氧化为亚硝酸盐（611.5±28.1mgN/L）；同时，城市污水中的部分有机物在另一个 SBR 中被去除；最后，SBR 中产生的亚硝酸盐（611.5±28.1mgN/L）和预处理城市污水中的氨（53.1±6.4mgN/L）通过上流式厌氧污泥床（UASB）中的联合厌氧氨氧化-反硝化工艺同时降解。经过长期运行，可获得令人满意的 10.3mg/L TN 出水水质，其中厌氧氨氧化和反硝化分别贡献 86.2%和 5.8%的脱氮效率。质量平衡证实，67.2%的厌氧氨氧化产生的硝酸盐可被还原为亚硝酸盐并原位再利用。厌氧氨氧化菌基因和硝酸盐还原酶/亚硝酸盐还原酶的比值被高度检测，从而加速了联合厌氧氨氧化-反硝化。此外，Ca. Brocadia 在各种厌氧氨氧化菌群体中占优势，从第 120 天的 1.2%增加到第 280 天的 3.6%。
