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首页> 外文期刊>Water Environment Research >Spatial and Temporal Variability in Atmospheric Nitrous Oxide Generation and Emission from Full-Scale Biological Nitrogen Removal and Non-BNR Processes
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Spatial and Temporal Variability in Atmospheric Nitrous Oxide Generation and Emission from Full-Scale Biological Nitrogen Removal and Non-BNR Processes

机译：大气中一氧化二氮的产生和排放的时空变异（全生物脱氮和非BNR过程）

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Biological nitrogen removal (BNR) strategies can contribute to atmospheric nitrous oxide (N-2O). In the future, as BNR is implemented at more wastewater treatment plants (WWTPs) around the globe, the emission and release of these gases to the atmosphere is expected to increase. This study focused on the quantification of N_2O emissions rates and inventory at several WWTPs using a newly developed, U.S. Environmental Protection Agency (Washington, D.C.) (U.S. EPA)-reviewed protocol. Application of the protocol revealed nitrous oxide emissions from aerated zones therein, hitherto not considered in the current U.S. EPA approach to quantifying N_2O fluxes from WWTPs. A high degree of diurnal variability in N_2O fluxes was measured, which correlated well with diurnal total Kjeldahl nitrogen loadings. In combination, these results point to the diminishing utility of a single emission factor approach to estimate the N_2O emissions from WWTPs, which has been followed to date. Water Environ. Res., 82, 2362 (2010).
机译：生物脱氮（BNR）策略可以促进大气中的一氧化二氮（N-2O）。将来，随着BNR在全球更多的废水处理厂（WWTP）中实施，预计这些气体向大气的排放和释放将会增加。这项研究的重点是使用新开发的，经过美国环境保护署（华盛顿特区）（美国EPA）审查的协议对几个污水处理厂的N_2O排放率和清单进行量化。该协议的应用揭示了其中充气区域的一氧化二氮排放量，迄今为止，美国EPA当前量化废水处理厂N_2O通量的方法中尚未考虑该排放量。测量了N_2O通量的高度昼夜变化，这与昼夜凯氏定氮总量有关。结合起来，这些结果表明，单一排放因子方法用于估算污水处理厂N_2O排放的效用正在降低，迄今为止已经得到遵循。水环境。 Res.82，2362（2010）。

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