Capillary Nanofiltration under Anoxic Conditions as Post-Treatment after Bank Filtration
| Autor: | Daniel Wicke, Jeannette Jährig, Ulf Miehe, Leo Vredenbregt, Alexander Sperlich |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
lcsh:Hydraulic engineering
Geography Planning and Development 02 engineering and technology 010501 environmental sciences Aquatic Science 01 natural sciences Biochemistry law.invention lcsh:Water supply for domestic and industrial purposes law lcsh:TC1-978 Dissolved organic carbon groundwater Filtration 0105 earth and related environmental sciences Water Science and Technology Total organic carbon lcsh:TD201-500 Fouling bank filtrate Chemistry suboxic Membrane fouling anoxic 021001 nanoscience & nanotechnology Pulp and paper industry Anoxic waters 6. Clean water sulphate Membrane organic micropollutants 13. Climate action Nanofiltration 0210 nano-technology decentralized capillary nanofiltration |
| Zdroj: | Water, Vol 10, Iss 11, p 1599 (2018) Water Volume 10 Issue 11 |
| ISSN: | 2073-4441 |
| Popis: | Bank filtration schemes for the production of drinking water are increasingly affected by constituents such as sulphate and organic micropollutants (OMP) in the source water. Within the European project AquaNES, the combination of bank filtration followed by capillary nanofiltration (capNF) is being demonstrated as a potential solution for these challenges at pilot scale. As the bank filtration process reliably reduces total organic carbon and dissolved organic carbon (DOC), biopolymers, algae and particles, membrane fouling is reduced resulting in long term operational stability of capNF systems. Iron and manganese fouling could be reduced with the possibility of anoxic operation of capNF. With the newly developed membrane module HF-TNF a good retention of sulphate (67&ndash 71%), selected micropollutants (e.g., EDTA: 84&ndash 92%) and hardness (41&ndash 55%) was achieved together with further removal of DOC (82&ndash 87%). Fouling and scaling could be handled with a good cleaning concept with acid and caustic. With the combination of bank filtration and capNF a possibility for treatment of anoxic well water without further pre-treatment was demonstrated and retention of selected current water pollutants was shown. |
| Databáze: | OpenAIRE |
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