Towards water and energy self-sufficiency : a closed-loop, solar-driven, low-tech laundry pilot facility (LaundReCycle) for the reuse of laundry wastewater

Bühler, Devi; Antenen, Nadine; Frei, Matthias; Koller, Christoph; Rousseau, Diederik P. L.; Schönborn, Andreas; Junge, Ranka

doi:10.1007/s43615-021-00077-2

Please use this identifier to cite or link to this item: https://doi.org/10.21256/zhaw-23121

Publication type:	Article in scientific journal
Type of review:	Peer review (publication)
Title:	Towards water and energy self-sufficiency : a closed-loop, solar-driven, low-tech laundry pilot facility (LaundReCycle) for the reuse of laundry wastewater
Authors:	Bühler, Devi Antenen, Nadine Frei, Matthias Koller, Christoph Rousseau, Diederik P. L. Schönborn, Andreas Junge, Ranka
et. al:	No
DOI:	10.1007/s43615-021-00077-2 10.21256/zhaw-23121
Published in:	Circular Economy and Sustainability
Volume(Issue):	1
Issue:	3
Page(s):	1037
Pages to:	1051
Issue Date:	12-Jul-2021
Publisher / Ed. Institution:	Springer
ISSN:	2730-597X 2730-5988
Language:	English
Subjects:	Greywater treatment; Wastewater reuse; Laundry wastewater; Biological wastewater treatment; Self-sufficiency; Off-grid solar power
Subject (DDC):	333: Economics of land and resources 620: Engineering
Abstract:	In the scope of this study, a pilot facility for the recycling of laundry effluent was developed and tested. With the aim to enable nearly complete energy and water self-sufficiency, the system is powered by a photovoltaic plant with second-life batteries, treats the wastewater within the unit and constantly reuses the treated wastewater for washing in a closed cycle. The technology for wastewater treatment is based on a low-tech approach consisting of a physical/mechanical pre-treatment and biological treatment in trickling filter columns. The treatment process is operated in batch mode for a capacity of five washing cycles per day. During five weeks of operation water quality, energy consumption and production, water losses and washing performance were monitored. The system recovered 69% of the used water for the washing machine while treating the wastewater to the necessary water quality levels. The average COD removal rate per cycle was 92%. Energy analysis was based on modelled data of the monitored energy consumption. With the current set-up, an internal consumption rate of 80% and self-sufficiency of 30% were modelled. Future developments aim at increasing water and energy self-sufficiency and optimizing the water treatment efficiency.
URI:	https://digitalcollection.zhaw.ch/handle/11475/23121
Fulltext version:	Published version
License (according to publishing contract):	CC BY 4.0: Attribution 4.0 International
Departement:	Life Sciences and Facility Management
Organisational Unit:	Institute of Natural Resource Sciences (IUNR)
Published as part of the ZHAW project:	LaundReCycle South Africa
Appears in collections:	Publikationen Life Sciences und Facility Management

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Bühler, D., Antenen, N., Frei, M., Koller, C., Rousseau, D. P. L., Schönborn, A., & Junge, R. (2021). Towards water and energy self-sufficiency : a closed-loop, solar-driven, low-tech laundry pilot facility (LaundReCycle) for the reuse of laundry wastewater. Circular Economy and Sustainability, 1(3), 1037–1051. https://doi.org/10.1007/s43615-021-00077-2

Bühler, D. et al. (2021) ‘Towards water and energy self-sufficiency : a closed-loop, solar-driven, low-tech laundry pilot facility (LaundReCycle) for the reuse of laundry wastewater’, Circular Economy and Sustainability, 1(3), pp. 1037–1051. Available at: https://doi.org/10.1007/s43615-021-00077-2.

D. Bühler et al., “Towards water and energy self-sufficiency : a closed-loop, solar-driven, low-tech laundry pilot facility (LaundReCycle) for the reuse of laundry wastewater,” Circular Economy and Sustainability, vol. 1, no. 3, pp. 1037–1051, Jul. 2021, doi: 10.1007/s43615-021-00077-2.

BÜHLER, Devi, Nadine ANTENEN, Matthias FREI, Christoph KOLLER, Diederik P. L. ROUSSEAU, Andreas SCHÖNBORN und Ranka JUNGE, 2021. Towards water and energy self-sufficiency : a closed-loop, solar-driven, low-tech laundry pilot facility (LaundReCycle) for the reuse of laundry wastewater. Circular Economy and Sustainability. 12 Juli 2021. Bd. 1, Nr. 3, S. 1037–1051. DOI 10.1007/s43615-021-00077-2

Bühler, Devi, Nadine Antenen, Matthias Frei, Christoph Koller, Diederik P. L. Rousseau, Andreas Schönborn, and Ranka Junge. 2021. “Towards Water and Energy Self-Sufficiency : A Closed-Loop, Solar-Driven, Low-Tech Laundry Pilot Facility (LaundReCycle) for the Reuse of Laundry Wastewater.” Circular Economy and Sustainability 1 (3): 1037–51. https://doi.org/10.1007/s43615-021-00077-2.

Bühler, Devi, et al. “Towards Water and Energy Self-Sufficiency : A Closed-Loop, Solar-Driven, Low-Tech Laundry Pilot Facility (LaundReCycle) for the Reuse of Laundry Wastewater.” Circular Economy and Sustainability, vol. 1, no. 3, July 2021, pp. 1037–51, https://doi.org/10.1007/s43615-021-00077-2.