Next Article in Journal
Modeling of Groundwater Potential Using Cloud Computing Platform: A Case Study from Nineveh Plain, Northern Iraq
Next Article in Special Issue
Water and Circular Cities
Previous Article in Journal
The Slope Association Type as a Comparative Index for the Evaluation of Environmental Risks
Previous Article in Special Issue
Nature-Based Units as Building Blocks for Resource Recovery Systems in Cities
Article

Management of Urban Waters with Nature-Based Solutions in Circular Cities—Exemplified through Seven Urban Circularity Challenges

1
Department of Civil Engineering, Faculty of Engineering, İstanbul Aydın University, K. Cekmece, İstanbul 34295, Turkey
2
Faculty of Civil and Geodetic Engineering, University of Ljubljana, 1000 Ljubljana, Slovenia
3
IRIDRA SRL, 50121 Florence, Italy
4
Institute of Sanitary Engineering and Water Pollution Control, University of Natural Resources and Life Sciences, 1190 Vienna, Austria
5
Research Centre for Built Environment, Energy, Water and Climate, VIA University College, 8700 Horsens, Denmark
6
Norwegian Institute for Water Research (NIVA), N-0579 Oslo, Norway
7
Catalan Institute for Water Research (ICRA), 17003 Girona, Spain
8
Universitat de Girona, 17005 Girona, Spain
9
Department of Environmental Engineering, Faculty of Engineering, Gebze Technical University, Gebze 41400, Turkey
10
The Laboratory of Chemical and Environmental Engineering (LEQUiA), University of Girona, 17071 Girona, Spain
11
EcoTech Center, Department Water and Waste-Water Technology, Faculty of Civil and Environmental Engineering, Gdansk University of Technology, 80-233 Gdańsk, Poland
12
Institute for Innovative Phytochemistry & Closed Loop Processes, Alchemia-Nova GmbH, 1140 Vienna, Austria
13
Energy Institute, Johannes Kepler University, 4040 Linz, Austria
14
Department of Engineering, Reykjavik University, 101 Reykjavik, Iceland
15
Institute of Spatial Management, Wrocław University of Environmental and Life Sciences, 50-357 Wrocław, Poland
16
HAMK Bio Research Unit, Häme University of Applied Sciences, 30100 Forssa, Finland
17
Associação CECOLAB Collaborative Laboratory Towards Circular Economy, 3405-155 Oliveira do Hospital, Portugal
18
Department of Civil Engineering, University of Calabria, 87036 Rende, Italy
19
Department of Mechanical, Energy and Management Engineering, University of Calabria, 87036 Rende, Italy
20
Laboratory of Environmental Engineering and Management, School of Chemical and Environmental Engineering, Technical University of Crete, 73100 Chania, Greece
21
Technisches Büro Regelsberger, 8200 Gleisdorf, Austria
22
Department of Civil, Environmental and Architectural Engineering (DICEA), University of Padova, 35131 Padova, Italy
23
Department of Environmental Science, Aarhus University, 4000 Roskilde, Denmark
24
WATEC—Centre for Water Technology, Aarhus University, 8000 Aarhus, Denmark
*
Authors to whom correspondence should be addressed.
Academic Editor: Francesco De Paola
Water 2021, 13(23), 3334; https://doi.org/10.3390/w13233334
Received: 21 October 2021 / Revised: 19 November 2021 / Accepted: 20 November 2021 / Published: 24 November 2021
(This article belongs to the Special Issue Water and Circular Cities)
Nature-Based Solutions (NBS) have been proven to effectively mitigate and solve resource depletion and climate-related challenges in urban areas. The COST (Cooperation in Science and Technology) Action CA17133 entitled “Implementing nature-based solutions (NBS) for building a resourceful circular city” has established seven urban circularity challenges (UCC) that can be addressed effectively with NBS. This paper presents the outcomes of five elucidation workshops with more than 20 European experts from different backgrounds. These international workshops were used to examine the effectiveness of NBS to address UCC and foster NBS implementation towards circular urban water management. A major outcome was the identification of the two most relevant challenges for water resources in urban areas: ‘Restoring and maintaining the water cycle’ (UCC1) and ‘Water and waste treatment, recovery, and reuse’ (UCC2). s Moreover, significant synergies with ‘Nutrient recovery and reuse’, ‘Material recovery and reuse’, ‘Food and biomass production’, ‘Energy efficiency and recovery’, and ‘Building system recovery’ were identified. Additionally, the paper presents real-life case studies to demonstrate how different NBS and supporting units can contribute to the UCC. Finally, a case-based semi-quantitative assessment of the presented NBS was performed. Most notably, this paper identifies the most typically employed NBS that enable processes for UCC1 and UCC2. While current consensus is well established by experts in individual NBS, we presently highlight the potential to address UCC by combining different NBS and synergize enabling processes. This study presents a new paradigm and aims to enhance awareness on the ability of NBS to solve multiple urban circularity issues. View Full-Text
Keywords: blue-green infrastructure; climate change and mitigation; sustainable water management; urban circularity challenges; water reuse blue-green infrastructure; climate change and mitigation; sustainable water management; urban circularity challenges; water reuse
Show Figures

Figure 1

MDPI and ACS Style

Oral, H.V.; Radinja, M.; Rizzo, A.; Kearney, K.; Andersen, T.R.; Krzeminski, P.; Buttiglieri, G.; Ayral-Cinar, D.; Comas, J.; Gajewska, M.; Hartl, M.; Finger, D.C.; Kazak, J.K.; Mattila, H.; Vieira, P.; Piro, P.; Palermo, S.A.; Turco, M.; Pirouz, B.; Stefanakis, A.; Regelsberger, M.; Ursino, N.; Carvalho, P.N. Management of Urban Waters with Nature-Based Solutions in Circular Cities—Exemplified through Seven Urban Circularity Challenges. Water 2021, 13, 3334. https://doi.org/10.3390/w13233334

AMA Style

Oral HV, Radinja M, Rizzo A, Kearney K, Andersen TR, Krzeminski P, Buttiglieri G, Ayral-Cinar D, Comas J, Gajewska M, Hartl M, Finger DC, Kazak JK, Mattila H, Vieira P, Piro P, Palermo SA, Turco M, Pirouz B, Stefanakis A, Regelsberger M, Ursino N, Carvalho PN. Management of Urban Waters with Nature-Based Solutions in Circular Cities—Exemplified through Seven Urban Circularity Challenges. Water. 2021; 13(23):3334. https://doi.org/10.3390/w13233334

Chicago/Turabian Style

Oral, Hasan V., Matej Radinja, Anacleto Rizzo, Katharina Kearney, Theis R. Andersen, Pawel Krzeminski, Gianluigi Buttiglieri, Derya Ayral-Cinar, Joaquim Comas, Magdalena Gajewska, Marco Hartl, David C. Finger, Jan K. Kazak, Harri Mattila, Patrícia Vieira, Patrizia Piro, Stefania A. Palermo, Michele Turco, Behrouz Pirouz, Alexandros Stefanakis, Martin Regelsberger, Nadia Ursino, and Pedro N. Carvalho. 2021. "Management of Urban Waters with Nature-Based Solutions in Circular Cities—Exemplified through Seven Urban Circularity Challenges" Water 13, no. 23: 3334. https://doi.org/10.3390/w13233334

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