China Architecture Design and Research Group, Beijing 100044, 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.
National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Engineering Research Center of Beijing, Beijing University of Technology, Beijing 100124, PR China.
Bioresour Technol. 2021 Nov;340:125617. doi: 10.1016/j.biortech.2021.125617. Epub 2021 Jul 21.
This study presents an innovative mainstream Anammox based on multiple NO-N supplement pathways to treat actual mature landfill leachate over 180 days. Desirable effluent quality of 11.8 mg/L total nitrogen (TN) and nitrogen removal efficiency of 98.8% were achieved despite fluctuation conditions of 1.5-fold influent substrates and 8.0-fold dissolved oxygen overload. Nitrogen mass balance confirmed Anammox was the dominant nitrogen removal pathway, contributing up to 87.9%. Functional genes of ammonia monooxygenase (amoA), hydrazine synthase (hzsB), and ratio of nitrate/nitrite reductase were highly detected. Anammox genera, Candidatus_Kuenenia (4.1%) and Candidatus_Brocadia (5.3%) were dominant in two functional systems, respectively, due to the different affinity of nitrite, oxygen, and organic carbon. As an economical and sustainable technology, the innovative process enabled a 95.1% decrease in organic carbon demand, a 61.5% reduction in aeration energy consumption, and 77.6% lower biomass production compared with traditional nitrification-denitrification process.
本研究提出了一种基于多种 NO-N 补充途径的创新主流 Anammox 工艺，用于处理实际成熟垃圾渗滤液超过 180 天。尽管进水基质波动 1.5 倍、溶解氧过载 8.0 倍，但仍达到了 11.8mg/L 总氮（TN）的理想出水质量和 98.8%的氮去除效率。氮质量平衡证实 Anammox 是主要的脱氮途径，贡献高达 87.9%。氨单加氧酶（amoA）、肼合酶（hzsB）和硝酸盐/亚硝酸盐还原酶的功能基因得到了高度检测。由于亚硝酸、氧气和有机碳的不同亲和力，Anammox 属的 Candidatus_Kuenenia（4.1%）和 Candidatus_Brocadia（5.3%）在两个功能系统中分别占主导地位。作为一种经济且可持续的技术，与传统硝化-反硝化工艺相比，该创新工艺可将有机碳需求降低 95.1%，曝气能耗降低 61.5%，生物量产生降低 77.6%。
