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Article

Sludge Management at the Kraków-Płaszów WWTP—Case Study

1
Faculty of Environmental Engineering and Energy, Cracow University of Technology, 31-155 Kraków, Poland
2
Doctoral School, Cracow University of Technology, 31-155 Kraków, Poland
*
Author to whom correspondence should be addressed.
Academic Editor: Andreas Ihle
Sustainability 2022, 14(13), 7982; https://doi.org/10.3390/su14137982
Received: 8 June 2022 / Revised: 26 June 2022 / Accepted: 27 June 2022 / Published: 30 June 2022
(This article belongs to the Section Environmental Sustainability and Applications)
Municipal wastewater treatment plants are good examples of facilities where the concept of a circular economy model can be effectively implemented by the recovery of energy as well as secondary and natural materials. That is why anaerobic co-digestion has become one of the most appealing renewable energy pathways and takes a key position within sludge-handling processes. This research looked into the feasibility of the utilization of water sludge from a water treatment plant in anaerobic co-digestion with sewage sludge. The experiments confirmed that anaerobic digestion of sewage sludge together with water sludge significantly improved fermentation gas (biogas) production. The best results were observed when water treatment sludge constituted 30% of the mass of sewage sludge (as volatile solids, VS). At this ratio, approximately 20% more biogas was produced in laboratory experiments compared to the biogas production from sewage sludge only. The results, once confirmed on a semi-technical scale, will help to develop a sequence of processes which would enhance biogas production. Both the technology and the final product offer a comprehensive solution for waste generated at water and wastewater treatment plants. The innovative approach allows for the use of various waste streams and their combined processing following the principle of the circular economy. View Full-Text
Keywords: sewage sludge; water treatment sludge; anaerobic co-digestion sewage sludge; water treatment sludge; anaerobic co-digestion
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MDPI and ACS Style

Górka, J.; Cimochowicz-Rybicka, M.; Poproch, D. Sludge Management at the Kraków-Płaszów WWTP—Case Study. Sustainability 2022, 14, 7982. https://doi.org/10.3390/su14137982

AMA Style

Górka J, Cimochowicz-Rybicka M, Poproch D. Sludge Management at the Kraków-Płaszów WWTP—Case Study. Sustainability. 2022; 14(13):7982. https://doi.org/10.3390/su14137982

Chicago/Turabian Style

Górka, Justyna, Małgorzata Cimochowicz-Rybicka, and Dominika Poproch. 2022. "Sludge Management at the Kraków-Płaszów WWTP—Case Study" Sustainability 14, no. 13: 7982. https://doi.org/10.3390/su14137982

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