Ranieri Ezio, D'Onghia Gianfranco, Lopopolo Luigi, Gikas Petros, Ranieri Francesca, Gika Eleni, Spagnolo Vincenzo, Ranieri Ada Cristina
Universita Degli Studi di Bari, Dipartimento di Biologia, Bari, Italy.
Technical University of Crete, School of Chemical and Environmental Engineering, Chania, Greece.
J Environ Manage. 2023 Jul 1;337:117767. doi: 10.1016/j.jenvman.2023.117767. Epub 2023 Mar 24.
An evaluation of the operative functioning data of 183 Wastewater Treatment Plants (WWTPs) in Apulia (Southeast of Italy) has been carried out aimed to assess their Green House Gases (GHGs) emissions and the level for which the use of anaerobic sludge treatment should be more convenient in terms of electricity consumption and of GHGs emissions. Out of the 183 studies WWTPs, 140 are practicing aerobic digestion of sludge, while the remaining 43 are practicing anaerobic digestion of sludge. WWTPs in Apulia are serving about 4,81 million PE (Population Equivalent), yielding approximately 600,000-ton equivalent CO per annum. The production of GHGs emissions has been estimated by evaluating the contribution of CO deriving from: a) electric energy consumption (fossil CO), b) biogenic CO, c) NO and d) CH emissions. The present study investigates a number of technical measures for upgrading the existing WWTPs, so to reduce GHGs emissions through the amelioration of CH production and capture in the anaerobic step, and through reducing the production of biogenic NO and CO emissions in the aerated basin. The methodology employees artificial intelligence-based control for upgrading the aerobic oxidation of the organic carbon and the nitrification-denitrification steps. As a result, GHGs emissions are expected to be reduced by approximately: 71% for CH, 57% for NO, 20% for biogenic CO and 15% for fossil derived CO.
对意大利东南部普利亚大区183座污水处理厂（WWTPs）的运行数据进行了评估，旨在评估其温室气体（GHGs）排放情况，以及就电力消耗和温室气体排放而言，采用厌氧污泥处理在何种程度上更为便利。在这183座被研究的污水处理厂中，140座采用污泥好氧消化，其余43座采用污泥厌氧消化。普利亚大区的污水处理厂服务约481万人口当量（PE），每年产生约60万吨当量的二氧化碳。温室气体排放的产生是通过评估源自以下方面的二氧化碳贡献来估算的：a）电能消耗（化石二氧化碳）、b）生物源二氧化碳、c）一氧化氮和d）甲烷排放。本研究调查了一些用于升级现有污水处理厂的技术措施，以便通过改善厌氧步骤中甲烷的产生和捕获，以及通过减少曝气池中生物源一氧化氮和二氧化碳排放的产生，来减少温室气体排放。该方法采用基于人工智能的控制来升级有机碳的好氧氧化以及硝化 - 反硝化步骤。结果，预计温室气体排放将减少约：甲烷71%、一氧化氮57%、生物源二氧化碳20%和化石源二氧化碳15%。
