1. Carbon footprint reduction by coupling intermittent aeration with submerged MBR: A pilot plant study.
- Author
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Bosco Mofatto, Paulo Marcelo, Cosenza, Alida, Di Trapani, Daniele, Wu, Lan, Ni, Bing-Jie, and Mannina, Giorgio
- Subjects
PILOT plants ,ECOLOGICAL impact ,SUSTAINABILITY ,SEWAGE disposal plants ,EFFLUENT quality ,ENERGY consumption ,BIOLOGICAL nutrient removal - Abstract
To find a possible trade-off between effluent quality, sludge production, energy consumption and GHG emissions, this study monitored the carbon and nutrient removal and greenhouse gas (GHG) emissions in a membrane bioreactor (MBR) pilot plant with intermittent aeration (IA). The pilot plant was operated by alternating aerobic and anoxic conditions inside the biological reactor. Up to 98.2 % of carbon and 76.4 % of nitrogen were respectively remove through this MBR pilot plant with IA. The carbon footprint was equal to 2.4 kgCO 2eq m
−3 . Indirect emissions contributed the most to the carbon footprint (55.3 %), mainly due to energy consumption, despite the alterations in aeration during the pilot plant operation. The result of this study provides theoretical guidance for building the wastewater treatment plant in a sustainable way. [Display omitted] • MBR pilot plant aimed at carbon and nitrogen removal was monitored. • The pilot plant was operated under intermittent aeration conditions. • Excellent pollutants removal and low greenhouse gas production were obtained. • Sewage sludge production was in line with other MBR plants. • Carbon footprint was mainly debited to the energy consumption. [ABSTRACT FROM AUTHOR]- Published
- 2024
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