Sorry, you need to enable JavaScript to visit this website.

A Modeling Analysis of Wastewater Heat Recovery Effects on Wastewater Treatment Plant Nitrification

TitoloA Modeling Analysis of Wastewater Heat Recovery Effects on Wastewater Treatment Plant Nitrification
Tipo di pubblicazioneArticolo su Rivista peer-reviewed
Anno di Pubblicazione2024
AutoriMattioli, D., Sabia Gianpaolo, Petta Luigi, Altobelli M., Evangelisti M., and Maglionico M.
RivistaWater (Switzerland)
Parole chiaveAerobic condition, Biological nitrification, Biological wastewater treatment process, Biological water treatment, Bioreactors, Climate change, funding_text 1=This research activity was funded by the project \u201CEnergy efficiency of industrial products and processes\u201D\u2014Research Program: \u201CPiano Triennale della Ricerca del Sistema Elettrico Nazionale 2019\u20132021\u201D funded by, Global shift, Modeling analyzes, Nitrification, Nitrogen removal, Nitrogen removal rates, Reclamation, Recovery effects, Sewage pumping plants, Sewer system, Sewers, Sludge residence time, Waste heat, Waste water treatment plants, Wastewater treatment, Water treatment plants

A global shift towards renewable energy production, driven primarily by the challenges posed by climate change, is currently underway. In this context, the utilization of heat recovery from municipal wastewater emerges as a promising green technology. Notably, the advantage of implementing energy recovery in sewers, as opposed to wastewater treatment plants (WWTPs), lies in the higher temperature of the wastewater and its proximity to potential heat users. Despite these benefits, concerns arise regarding the potential adverse effects on biological wastewater treatment processes downstream of the heat recovery section, particularly during colder seasons. This paper seeks to assess the impact of a heat recovery system along the sewer network on the efficiency of biological wastewater treatment processes. The methodology involves a modeling analysis of a real sewage network in Italy. Under typical northern Italy climate conditions, the results demonstrate the feasibility of heat recovery in sewers for WWTPs designed with a sludge residence time under aerobic conditions (SRTaer) greater than 13 days. In such cases, the nitrification process remains relatively unaffected. However, for lower SRTaer values, a case-specific feasibility assessment is recommended to evaluate the overall process efficiency comprehensively. © 2024 by the authors.


cited By 0

Citation KeyMattioli2024