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首页> 外文期刊>Science of the total environment >Analysis of empirical methods for the quantification of N_2O emissions in wastewater treatment plants: Comparison of emission results obtained from the IPCC Tier 1 methodology and the methodologies that integrate operational data
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Analysis of empirical methods for the quantification of N_2O emissions in wastewater treatment plants: Comparison of emission results obtained from the IPCC Tier 1 methodology and the methodologies that integrate operational data

机译：废水处理厂N_2O排放量化的实证方法分析：从IPCC三级方法获得的发射结果和整合运营数据的方法

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摘要

Wastewater is a source of N_2O emission that is generated, both directly from advanced treatment plants and indirectly from the discharge of wastewater into the natural environment, due to its remaining nitrogen content. There are a variety of methods based on different parameters used to calculate N_2O emission in wastewater treatment plants. The methodology proposed by the IPCC is used as an international reference for national inventories. In this work, we use five international methodologies to calculate the N_2O emission of the WWTPs in two areas with high population density: The Metropolitan Area of Barcelona (MAB) and Mexico City (MXC). The MAB has 100% population served and has advanced treatment plants (five WWTP) and traditional wastewater treatment plants (two WWTP), the MXC served 14% of its population and had advanced treatment plants (six WWTP) and traditional plants (nineteen WWTP) in 2016. The results obtained show that the IPCC and Das methodologies underestimate the emission of N_2O by considering the per capita consumption of proteins as a constant nitrogen value and also by the suggested emission factors. The methodologies that use the operational data of each plant provide emission results closer to those found in the literature. The value of TN should be the parameter to be considered for a correct estimate of the N_2O emission in the WWTPs. The emission factors currently used are very low, with a low level of confidence of up to 1.3%. The range currently used should be increased and have a minimum range of 0.03 kg N_2O-N/kg N. The emission factors reported in the literature are very variable and with very high levels of uncertainty, and therefore underestimate the emission of N_2O in WWTPs. More research should be done to obtain higher and more reliable emission factors than those currently used.
机译：废水是N_2O发射的来源，其既直接从先进的治疗厂和间接地从废水排出到自然环境中，由于其剩余的氮含量。基于用于计算废水处理厂中的N_2O排放的不同参数存在多种方法。 IPCC提出的方法被用作国家库存的国际参考。在这项工作中，我们使用五种国际方法来计算人口密度高的两个地区的WWTPS的N_2O排放：巴塞罗那（MAB）和墨西哥城（MXC）的大都市区。 MAB有100％的人口服务，并具有先进的治疗植物（五种WWTP）和传统的废水处理厂（两种WWTP），MXC占其人口的14％，并具有先进的治疗植物（六种WWTP）和传统植物（19世纪WWTP）在2016年。获得的结果表明，IPCC和DAS方法通过将蛋白质的人均消耗视为恒定的氮值以及所建议的排放因子，通过考虑蛋白质的人均消耗而低估了N_2O的排放。使用每个工厂的操作数据的方法提供更接近文献中的排放结果。 TN的值应该是要考虑的参数，用于正确估计WWTPS中的N_2O发射。目前使用的排放因子非常低，信心低至1.3％。当前使用的范围应增加，最小范围为0.03kg N_2O-n / kg N.文献中报道的排放因子非常可变，并且具有非常高的不确定性，因此低估WWTPS的N_2O的排放。应该进行更多的研究以获得比目前使用的那些更高且更可靠的排放因子。

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