Energy Valorisation of Wastewater Treatment Plant Sludge through Thermal Gasification: An Economic Perspective

The technical-economic analysis was carried out for the production of sludge-derived fuel from a municipal wastewater treatment plant (WWTP). The baseline for the analysis consists of a sludge drying plant, processing 6 m<sup>3</sup> of sludge per day and producing a total of about 1 m&l...

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Bibliographic Details
Main Authors: Luis F. Carmo-Calado, Roberta Mota-Panizio, Gonçalo Lourinho, Octávio Alves, I. Gato, Paulo Sérgio Duque de Brito
Format: Article
Language:English
Published: MDPI AG 2021-04-01
Series:Proceedings
Subjects:
Online Access:https://www.mdpi.com/2504-3900/52/1/3
Description
Summary:The technical-economic analysis was carried out for the production of sludge-derived fuel from a municipal wastewater treatment plant (WWTP). The baseline for the analysis consists of a sludge drying plant, processing 6 m<sup>3</sup> of sludge per day and producing a total of about 1 m<sup>3</sup> of combustible material with 8% of moisture and a higher calorific power of 18.702 MJ/kg. The transformation of biofuel into energy translates into an electricity production of about 108 kW per 100 kg of sludge. The project in the baseline scenario demonstrated feasibility with a payback time of about six years.
ISSN:2504-3900