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| rdfs:seeAlso
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| Description
| - The possibilities for salt recovery from industrial brines by a coupled nanofiltration - membrane distillation (NF-MD) process are illustrated in this paper by two case studies i.e. the recovery of water and chloride salts from Ion Exchange (IEX) regenerate and from zinc ore refinery wastewater. Ion exchange based demineralization of tap water for the preparation of process water results in a saline regeneration wastewater. Techno-economical evaluation shows that NF-MD on this wastewater is economically feasible for midsized and larger scale demineralization plants (200 to 2000 m3/day demineralized water) but only when discharge is prohibitively expensive or not allowed. Scaling is found to be a main bottleneck for NF-MD. It is therefore concluded that further physicochemical pretreatment is required to improve the process. The cost benefits of water reuse (1.5% to 3.2%) and salt recuperation (0.16% to 0.36%) are small when compared to the overall treatment cost. The main benefits are reduced discharge of chlorides and cost reduction for middle sized (43%) and larger installations (47%) in comparison to the cost of external wastewater disposal. An important step in the production of secondary zinc oxides is the washing of zinc oxide to remove chlorides and fluorides. During this washing step, a chloride rich waste stream is generated. A valorisation of this chloride rich waste stream is desired both to improve local environmental conditions and to allow increased zinc production capacity currently limited by chloride load based discharge limitations. Nanofiltration is able to remove the major part of the metals present in the feed stream. During membrane distillation of the NF permeate no scaling issues were experienced. The final brine can be evaporated to a salt containing 45.9 % NaCl and 54 % KCl.
- The possibilities for salt recovery from industrial brines by a coupled nanofiltration - membrane distillation (NF-MD) process are illustrated in this paper by two case studies i.e. the recovery of water and chloride salts from Ion Exchange (IEX) regenerate and from zinc ore refinery wastewater. Ion exchange based demineralization of tap water for the preparation of process water results in a saline regeneration wastewater. Techno-economical evaluation shows that NF-MD on this wastewater is economically feasible for midsized and larger scale demineralization plants (200 to 2000 m3/day demineralized water) but only when discharge is prohibitively expensive or not allowed. Scaling is found to be a main bottleneck for NF-MD. It is therefore concluded that further physicochemical pretreatment is required to improve the process. The cost benefits of water reuse (1.5% to 3.2%) and salt recuperation (0.16% to 0.36%) are small when compared to the overall treatment cost. The main benefits are reduced discharge of chlorides and cost reduction for middle sized (43%) and larger installations (47%) in comparison to the cost of external wastewater disposal. An important step in the production of secondary zinc oxides is the washing of zinc oxide to remove chlorides and fluorides. During this washing step, a chloride rich waste stream is generated. A valorisation of this chloride rich waste stream is desired both to improve local environmental conditions and to allow increased zinc production capacity currently limited by chloride load based discharge limitations. Nanofiltration is able to remove the major part of the metals present in the feed stream. During membrane distillation of the NF permeate no scaling issues were experienced. The final brine can be evaporated to a salt containing 45.9 % NaCl and 54 % KCl. (en)
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| Title
| - Recovering Salts from Industrial Brines by Nf-md: Case Studies on IEX Regeneration Wastewater and Chloride Rich Wash Water from a Zinc Ore Refinery
- Recovering Salts from Industrial Brines by Nf-md: Case Studies on IEX Regeneration Wastewater and Chloride Rich Wash Water from a Zinc Ore Refinery (en)
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| skos:prefLabel
| - Recovering Salts from Industrial Brines by Nf-md: Case Studies on IEX Regeneration Wastewater and Chloride Rich Wash Water from a Zinc Ore Refinery
- Recovering Salts from Industrial Brines by Nf-md: Case Studies on IEX Regeneration Wastewater and Chloride Rich Wash Water from a Zinc Ore Refinery (en)
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| skos:notation
| - RIV/46747885:24620/14:#0000665!RIV15-MSM-24620___
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/46747885:24620/14:#0000665
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - Resource recovery; membrane distillation; nanofiltration; NF-MD; brine; chloride; regenerate (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...v/mistoKonaniAkce
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| http://linked.open...i/riv/mistoVydani
| |
| http://linked.open...i/riv/nazevZdroje
| - EcoTechnologies for Wastewater Treatment
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| http://linked.open...in/vavai/riv/obor
| |
| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
| |
| http://linked.open...iv/tvurceVysledku
| - Jiříček, Tomáš
- Cauwenberg, Peter
- DeSchepper, Wim
- Sankar, J. S.
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| http://linked.open...vavai/riv/typAkce
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| http://linked.open.../riv/zahajeniAkce
| |
| number of pages
| |
| http://purl.org/ne...btex#hasPublisher
| |
| https://schema.org/isbn
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| http://localhost/t...ganizacniJednotka
| |
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