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© 2022 ZAR, Hinwil
Reproduction or electronic reproduction of text and images is permitted only with reference to the source.
© 2021 ZAR, Hinwil
J. Böni (2020) / ETH Zurich (Bachelor thesis)
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Mehr J., Haupt M., Skutan S., Morf L., Adrianto L.R., Weibel G., Hellweg S. (2020).
The environmental performance of enhanced metal recovery from dry municipal solid waste incineration bottom ash.
Waste Management, 119, 330-341.
10 years Foundation ZAR – milestones, projects and goals
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Reproduction or electronic reproduction of text and images is permitted only with reference to the source.
© 2020 ZAR, Hinwil
At the moment only available in German.
Reprint or electronic reproduction of text and images is permitted only with reference to the source.
© 2020 ZAR, Hinwil
At the moment only available in German.
Reprint or electronic reproduction of text and images is permitted only with reference to the source.
© 2020 ZAR, Hinwil
Reproduction or electronic reproduction of text and images is permitted only with reference to the source.
© 2019 ZAR, Hinwil
Phosphorus recovery from sewage sludge ash.
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THERMO-RECYCLING – Efficient recovery of valuable materials from dry bottom ash
The recovery achieved and the associated savings of 60,000 tons of CO2 per year (equals 0.6 t of CO2/t of dry bottom ash or 0.1 t CO2/t municipal solid waste) set new standards worldwide. In addition to the major ecological advantages, the great economic potential of dry bottom ash has also been proven. In 2017, metal revenues of over CHF 95 per ton of dry bottom ash delivered have been realized. The treatment process also sets new standards for industrial plants regarding dust emissions.
Authors: D. Böni, CEO / Dr. L. Morf, President of the technical advisory board, Foundation ZAR
ETH Zurich has drawn up a comprehensive life cycle assessment of the phos4life process, which the ZAR Foundation is developing in cooperation with the Spanish industrial partner Téchnicas Réunidas on behalf of the Canton of Zurich. The study compares the production of phosphoric acid from sewage sludge ash with the primary production of phosphoric acid from raw phosphate using the Phos4life process. The study includes an English summary.
Fact sheet for the discussion between the director of the cantonal office of building and the political leaders of Zurich incineration plants on the subject of recycling and landfilling of bottom ash from 27.11.2017 (German only).
At the end of October 2016, after a lengthy construction and commissioning phase of the world's first treatment plant for dry bottom ahs, all processing lines for the separation of metals from the bottom ash were available for operation. Although the focus of the activities was concentrated on operational processes and little time has been found to optimize the plant, the plant's performance figures are encouraging. After about half a year of continuous operation, an initial interim balance can be drawn up.
The report is written in German only - for more information please contact us directly.
In order to ensure and improve the reliable assessment of the quality of residues from thermal waste treatment, but also to determine the economically and ecologically interesting potentials of recyclable materials more reliably, ZAR worked intensively in cooperation with BACHEMA AG, Schlieren and supported by the Canton of Zurich on the optimization of the corresponding methods.
After intensive further development of individual processes over the last 5 years, this book of methods represents today's state of the art in the knowledge of practical methods covering the entire spectrum of residue fractions of thermal waste treatment. With the publication of this document, this knowledge is now to be made available for practice.
Authors: Stefan Skutan and Rolf Gloor supported by Dr. Leo Morf (German Version ©2014, English Version ©2018)