dc.contributor.author | Thelin, Willy Røstum | |
dc.contributor.author | Sivertsen, Edvard | |
dc.contributor.author | Raspati, Gema Sakti | |
dc.contributor.author | Azrague, Kamal | |
dc.contributor.author | Helness, Herman | |
dc.date.accessioned | 2021-04-21T06:39:07Z | |
dc.date.available | 2021-04-21T06:39:07Z | |
dc.date.created | 2021-04-16T08:03:33Z | |
dc.date.issued | 2021 | |
dc.identifier.issn | 2077-0375 | |
dc.identifier.uri | https://hdl.handle.net/11250/2738740 | |
dc.description.abstract | A novel approach for resource recovery includes forward osmosis (FO) as a concentration step in municipal wastewater treatment. The current study investigates different pre-treatment strategies including biological treatment with a moving-bed bioreactor (MBBR) at different loading rates and particle removal by filtration and sedimentation. Membrane performance and recovery potential for energy and nutrients were investigated in laboratory-scale FO experiments in batch mode using pre-treated municipal wastewater as feed and 35 g/L NaCl as a draw solution. Initial water fluxes were in the range of 6.3 to 8.0 L/(m2·h). The baseline fluxes were modelled to account for flux decline due to concentration effects and to enable the prediction of flux decline due to membrane fouling. Fouling-related flux decline varied from 0 to 31%. Both organic fouling and precipitation of CaCO3 and CaHPO4 were identified by using SEM–EDS. High-rate flushing resulted in complete flux recovery under most conditions. Scaling could be avoided by lowering the pH. Two operation strategies were tested to achieve this: (1) applying a bioreactor with a low organic loading rate to achieve high nitrification, and (2) adding a strong acid. A low organic loading rate and the use of additional particle removal were efficient measures that reduced organic/particulate fouling. The recovery potentials for COD and phosphorous in FO concentrate were close to 100% | en_US |
dc.language.iso | eng | en_US |
dc.publisher | MDPI | en_US |
dc.rights | CC BY 4.0 | * |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | * |
dc.subject | Nutrient recovery | en_US |
dc.subject | Resource recovery | en_US |
dc.subject | Rorward osmosis | en_US |
dc.subject | Wastewater treatment | en_US |
dc.subject | Municipal wastewater | en_US |
dc.title | Concentration of Municipal MBBR Effluent by FO for Resource Recovery: Batch Experiments in Side-Stream Configuration | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_US |
dc.rights.holder | © 2021 by the authors | en_US |
dc.subject.nsi | VDP::Teknologi: 500 | en_US |
dc.source.volume | 11 | en_US |
dc.source.journal | Membranes | en_US |
dc.source.issue | 4 | en_US |
dc.identifier.doi | 10.3390/membranes11040278 | |
dc.identifier.cristin | 1904482 | |
dc.relation.project | Norges forskningsråd: 247612 | en_US |
dc.source.articlenumber | 278 | en_US |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |