School of Resources and Environmental Sciences, University of Jinan, Jinan 250022, China.
School of Resources and Environmental Sciences, University of Jinan, Jinan 250022, China; Key Laboratory of Chemical Sensing & Analysis in Universities of Shandong, School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China.
Bioresour Technol. 2014 Nov;171:487-90. doi: 10.1016/j.biortech.2014.08.071. Epub 2014 Aug 23.
The objective of this study was to evaluate the nitrous oxide (N2O) emissions in partial nitrifying and full nitrifying granular sludge reactors treating ammonium-rich wastewater. During stable operation, there was no significant difference of NH4(+)-N removal efficiencies between the two granular reactors. Nitrate and nitrite were the main effluent nitrogen species of the two reactors, and nitrite accumulation rate of partial nitrifying reactor was high of 87.79±2.03%. However, partial nitrifying granular-reactor had better total nitrogen removal efficiency (41.84±3.35%) than that of full nitrifying granular-reactor (19.91±2.12%). According to typical cycles, the N2O emission amount per cycle of partial nitrifying reactor account for 11.48% of the incoming nitrogen load, which was 1.5 times higher than that of full nitrifying reactor (7.47%). The obtained results could provide more information for understanding of N2O emission in granular sludge systems.
本研究旨在评估处理富铵废水的部分硝化和完全硝化颗粒污泥反应器中的氧化亚氮（N2O）排放。在稳定运行期间，两个颗粒反应器的 NH4（+）-N 去除效率没有显著差异。硝酸盐和亚硝酸盐是两个反应器的主要出水氮物种，部分硝化反应器的亚硝酸盐积累率高达 87.79±2.03%。然而，部分硝化颗粒反应器的总氮去除效率（41.84±3.35%）优于完全硝化颗粒反应器（19.91±2.12%）。根据典型周期，部分硝化反应器的每个周期 N2O 排放量占进水氮负荷的 11.48%，是完全硝化反应器（7.47%）的 1.5 倍。所得结果可为了解颗粒污泥系统中 N2O 排放提供更多信息。
