Next Article in Journal
Cyber—Physical Attack Detection in Water Distribution Systems with Temporal Graph Convolutional Neural Networks
Previous Article in Journal
Impact of Future Land-Use/Cover Change on Streamflow and Sediment Load in the Be River Basin, Vietnam
 
 
Article

Combining Process Modelling and LCA to Assess the Environmental Impacts of Wastewater Treatment Innovations

1
Department of Environmental Chemistry, Faculty of Environmental Technology, University of Chemistry and Technology Prague, Technická 5, 160 00 Prague, Czech Republic
2
Department of Water Technology and Environmental Engineering, Faculty of Environmental Technology, University of Chemistry and Technology Prague, Technická 5, 160 00 Prague, Czech Republic
*
Author to whom correspondence should be addressed.
Academic Editors: Montse Meneses and Jorgelina Pasqualino
Water 2021, 13(9), 1246; https://doi.org/10.3390/w13091246
Received: 3 April 2021 / Revised: 22 April 2021 / Accepted: 27 April 2021 / Published: 29 April 2021
(This article belongs to the Special Issue Advances in Life Cycle Assessment in Wastewater Treatment)
Alternative wastewater treatment (WWT) technologies with lower environmental impacts seem to be the way forward in the pursuit of sustainable wastewater treatment plants (WWTPs). Process modelling of material and energy flows together with life-cycle assessment (LCA) can help to better understand these impacts and show the right direction for their development. Here, we apply this combined approach to three scenarios: conventional WWT; conventional WWT + chemically enhanced primary treatment (CEPT); conventional WWT + CEPT + side stream partial nitritation/anammox (PN/A). For each scenario, equations were developed to calculate chemical oxygen demand and nitrogen flow (solid and dissolved form) through the WWTP and to estimate the energy demands of its unit operations. LCA showed that the main environmental impact categories for all scenarios were global warming potential (GWP), eutrophication potential (EP) and marine aquatic eco-toxicity potential (MAETP). Compared with conventional WWT, CEPT and CEPT combined with PN/A resulted in a higher sum of normalized and weighed environmental indicators, by 19.5% and 16.4%, respectively (20.0% and 18.3% including biogenic carbon). Interestingly, the environmentally positive features of the alternative scenarios were often traded-off against other increased negative impacts. This suggests that further development is needed to consider these technologies a sustainable alternative. View Full-Text
Keywords: life cycle; anammox; nitritation; CEPT; impact; trade-off life cycle; anammox; nitritation; CEPT; impact; trade-off
Show Figures

Graphical abstract

MDPI and ACS Style

Paulu, A.; Bartáček, J.; Šerešová, M.; Kočí, V. Combining Process Modelling and LCA to Assess the Environmental Impacts of Wastewater Treatment Innovations. Water 2021, 13, 1246. https://doi.org/10.3390/w13091246

AMA Style

Paulu A, Bartáček J, Šerešová M, Kočí V. Combining Process Modelling and LCA to Assess the Environmental Impacts of Wastewater Treatment Innovations. Water. 2021; 13(9):1246. https://doi.org/10.3390/w13091246

Chicago/Turabian Style

Paulu, Aleš, Jan Bartáček, Markéta Šerešová, and Vladimír Kočí. 2021. "Combining Process Modelling and LCA to Assess the Environmental Impacts of Wastewater Treatment Innovations" Water 13, no. 9: 1246. https://doi.org/10.3390/w13091246

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop