GEMMA-Group of Environmental Engineering and Microbiology, Department of Civil and Environmental Engineering, Universitat Politècnica de Catalunya-BarcelonaTech, c/ Jordi Girona, 1-3, Building D1, E-08034 Barcelona, Spain.
Aimen, Polígono Industrial de Cataboi SUR-PPI-2 (Sector) 2, Parcela 3, 36418 O Porriño, Spain.
Sci Total Environ. 2021 May 20;770:145326. doi: 10.1016/j.scitotenv.2021.145326. Epub 2021 Jan 22.
The aim of this study was to quantify and compare greenhouse gas (GHG) (i.e. carbon dioxide (CO), nitrous oxide (NO) and methane (CH)) emissions from two full-scale winery wastewater and sludge treatment systems (i.e. constructed wetlands (CWs) and activated sludge system) located in Galicia (Spain). GHG fluxes were measured using the static chamber method in combination with an on-site Fourier transform infrared spectroscopy (FTIR) gas analyser in the CWs system. These on-site innovative techniques proved to be very accurate and reliable. In the activated sludge treatment systems, the floating chamber method in combination with the FTIR gas analyser was used. Measurements were carried out during the vintage season, when winery wastewater has the highest flow and loads, and the rest of the year. Emission rates of CO, NO and CH in the CWs units (i.e. vertical flow, horizontal subsurface flow and sludge treatment wetlands) ranged from 1.35E+02 to 7.54E+04, 1.70E-01 to 3.09E+01 and - 3.05E+01 to 1.79E+03 mg m day, respectively. In the case of the activated sludge units (i.e. reactor, secondary settler and sludge storage tank) emission rates of CO, NO and CH ranged from 1.56E+04 to 1.43E+05, 1.13E+01 to 4.75E+01 and 2.52E+01 to 1.01E+03 mg m day, respectively. Seasonally, daily and instantaneous variability in emissions as well as spatial variability was found. Comparing CWs with the activated sludge system, surface emission rates were lower in the CWs system in both seasons considered. Results highlighted that CWs are suitable technologies that can help to reduce GHG emissions associated with winery wastewater treatment.
本研究的目的是量化和比较两个全规模酿酒厂废水和污泥处理系统（即人工湿地（CWs）和活性污泥系统）的温室气体（GHG）（即二氧化碳（CO）、氧化亚氮（NO）和甲烷（CH））排放量。在 CWs 系统中，使用静态室法结合现场傅里叶变换红外光谱（FTIR）气体分析仪测量 GHG 通量。这些现场创新技术被证明非常准确和可靠。在活性污泥处理系统中，使用浮动室法结合 FTIR 气体分析仪。测量在酿酒厂废水流量和负荷最高的酿酒季节以及一年中的其他时间进行。CWs 单元（即垂直流、水平潜流和污泥处理湿地）中的 CO、NO 和 CH 排放率范围为 1.35E+02 至 7.54E+04、1.70E-01 至 3.09E+01 和-3.05E+01 至 1.79E+03mgmday。在活性污泥单元（即反应器、二次沉淀池和污泥储存罐）中，CO、NO 和 CH 的排放率范围为 1.56E+04 至 1.43E+05、1.13E+01 至 4.75E+01 和 2.52E+01 至 1.01E+03mgmday。结果表明，CWs 是适合的技术，可以帮助减少与酿酒厂废水处理相关的 GHG 排放。
