School of Water Resources and Environment, China University of Geosciences (Beijing), No. 29 Xueyuan Road, Haidian District, Beijing 100083, China; Department of Geography and Environmental Management, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada.
School of Water Resources and Environment, China University of Geosciences (Beijing), No. 29 Xueyuan Road, Haidian District, Beijing 100083, China.
Bioresour Technol. 2016 Oct;218:307-17. doi: 10.1016/j.biortech.2016.06.098. Epub 2016 Jun 27.
An up-flow partially aerated biological filter (U-PABF) was developed to study the removal of nitrogen and chemical oxygen demand (COD) from synthetic domestic wastewater. The removal of NH4(+)-N was primarily attributed to adsorption in the zeolite U-PABF and to bioprocesses in the ceramic U-PABF. When the hydraulic retention time (HRT) was 5.2h, the ceramic U-PABF achieved a good performance and the NH4(+)-N, total nitrogen (TN), and COD removal efficiency reached 99.08±8.79%, 72.83±0.68%, and 89.38±1.04%, respectively. The analysis of NH4(+)-N, NO3(-)-N, NO2(-)-N, and TN at different depths revealed the simultaneous existence of nitrification-denitrification, and anaerobic ammonium oxidation (anammox) in ceramic U-PABF. Illumina pyrosequencing confirmed the existence of Planctomycetes, which are responsible for anammox. The results indicated that the nitrification-denitrification and anammox all contributed to the high removal of NH4(+)-N, TN, and COD in the U-PABF.
上流式部分充氧生物滤池（U-PABF）用于研究合成生活污水中氮和化学需氧量（COD）的去除。NH4(+)-N 的去除主要归因于沸石 U-PABF 中的吸附和陶瓷 U-PABF 中的生物过程。当水力停留时间（HRT）为 5.2h 时，陶瓷 U-PABF 表现出良好的性能，NH4(+)-N、总氮（TN）和 COD 的去除效率分别达到 99.08±8.79%、72.83±0.68%和 89.38±1.04%。对不同深度的 NH4(+)-N、NO3(-)-N、NO2(-)-N 和 TN 的分析表明，在陶瓷 U-PABF 中同时存在硝化-反硝化和厌氧氨氧化（anammox）。Illumina 焦磷酸测序证实了 Planctomycetes 的存在，它们负责 anammox。结果表明，硝化-反硝化和 anammox 都有助于 U-PABF 中 NH4(+)-N、TN 和 COD 的高效去除。
