In recent years, increasing attention has been paid to the problem of sewage sludge management and the relevant energy consumption, which represent the main cost items in wastewater treatment plants. Therefore, implementation of technologies that can reduce sludge production and ensure a positive impact on the energy of the entire sewage treatment plant has gained considerable importance in the scientific and technical community. The objective of this study was thus to screen full-scale sludge reduction technologies integrated into both the water line and the sludge line of a municipal sewage treatment plant with a sustainable impact on the overall balance of the plant. The results showed that, within the water line, ultrasound in the recirculation line of the activated sludge allowed for greater reductions in sludge production than the Cannibal and UTN systems, despite the higher energy consumption. CAMBITM, BioThelysTM, ExelysTM and TurboTec® enabled the greatest reductions in sludge production among the technologies integrated into the sludge line, and although they required a large amount of energy, this was partially offset by energy recovery in terms of additional biogas production.

Full-Scale Sewage Sludge Reduction Technologies: A Review with a Focus on Energy Consumption / Ferrentino, Roberta; Langone, Michela; Fiori, Luca; Andreottola, Gianni. - In: WATER. - ISSN 2073-4441. - 2023, 15:4(2023), pp. 61501-61520. [10.3390/w15040615]

Full-Scale Sewage Sludge Reduction Technologies: A Review with a Focus on Energy Consumption

Ferrentino, Roberta
Primo
;
Langone, Michela
Secondo
;
Fiori, Luca
Penultimo
;
Andreottola, Gianni
Ultimo
2023-01-01

Abstract

In recent years, increasing attention has been paid to the problem of sewage sludge management and the relevant energy consumption, which represent the main cost items in wastewater treatment plants. Therefore, implementation of technologies that can reduce sludge production and ensure a positive impact on the energy of the entire sewage treatment plant has gained considerable importance in the scientific and technical community. The objective of this study was thus to screen full-scale sludge reduction technologies integrated into both the water line and the sludge line of a municipal sewage treatment plant with a sustainable impact on the overall balance of the plant. The results showed that, within the water line, ultrasound in the recirculation line of the activated sludge allowed for greater reductions in sludge production than the Cannibal and UTN systems, despite the higher energy consumption. CAMBITM, BioThelysTM, ExelysTM and TurboTec® enabled the greatest reductions in sludge production among the technologies integrated into the sludge line, and although they required a large amount of energy, this was partially offset by energy recovery in terms of additional biogas production.
2023
4
Ferrentino, Roberta; Langone, Michela; Fiori, Luca; Andreottola, Gianni
Full-Scale Sewage Sludge Reduction Technologies: A Review with a Focus on Energy Consumption / Ferrentino, Roberta; Langone, Michela; Fiori, Luca; Andreottola, Gianni. - In: WATER. - ISSN 2073-4441. - 2023, 15:4(2023), pp. 61501-61520. [10.3390/w15040615]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11572/370550
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