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Brines from industrial water recycling: New ways to resource recovery

Kieselbach, M.; Hogen, T.; Geißen, S.-U.; Track, T.; Becker, D.; Rapp, H.-J.; Koschikowski, J.; Went, J.; Horn, Harald; Saravia, Florencia; Bauer, Annika; Schwantes, R.; Pfeifle, D.; Heyn, N.; Weissroth, M.; Fitzke, B.

Stricter environmental regulation policies and freshwater as an increasingly valuable resource have led to global growth of zero liquid discharge (ZLD) processes in recent years. During this development, in addition to water, the recovery of recyclable materials, e.g. salts, from industrial wastewater and brines is considered more frequently. Within the framework of the HighCon research project, the subject of this study, a new ZLD process with the goal of pure single-salt recovery from industrial wastewater has been developed and investigated in a demonstrational setup at an industrial site. With regard to pure salts recovery, separating organic components is of great importance during the treatment of the concentrate arising from used water recycling. The removal of COD and of ions responsible for scaling worked very well using nanofiltration. The nanofiltration permeate containing the monovalent ions was pre-concentrated using electrodialysis and membrane distillation before selective crystallization for single-salt recovery was performed. An example economic case study for the newly developed ZLD process - based on demonstration results and considering optimization measures for a full-scale design - indicates that the costs are equal to those of a conventional ZLD process, which, however, does not provide inter alia the aforementioned benefit of single-salt recovery.

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Verlagsausgabe §
DOI: 10.5445/IR/1000129132
Veröffentlicht am 29.01.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Engler-Bunte-Institut (EBI)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 12.2020
Sprache Englisch
Identifikator ISSN: 2220-1319, 2408-9370, 2414-0201, 2617-3697
KITopen-ID: 1000129132
Erschienen in Journal of water reuse and desalination
Verlag IWA Publishing
Band 10
Heft 4
Seiten 443–461
Schlagwörter Brine management, Cost analysis, Industrial wastewater, Resource recovery, Water reuse, Zero liquid discharge
Nachgewiesen in Dimensions
Web of Science
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