A Brief Review on the Resistance-in-Series Model in Membrane Bioreactors (MBRs)
The cake layer deposited on the membrane modules of membrane bioreactors (MBRs), especially under a submerged configuration, represents a relevant and fundamental mechanism deeply influencing the development of membrane fouling. It negatively affects the total resistance to filtration, while exertin...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2019-02-01
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| Series: | Membranes |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-0375/9/2/24 |
| _version_ | 1797710386654347264 |
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| author | Gaetano Di Bella Daniele Di Trapani |
| author_facet | Gaetano Di Bella Daniele Di Trapani |
| author_sort | Gaetano Di Bella |
| collection | DOAJ |
| description | The cake layer deposited on the membrane modules of membrane bioreactors (MBRs), especially under a submerged configuration, represents a relevant and fundamental mechanism deeply influencing the development of membrane fouling. It negatively affects the total resistance to filtration, while exerting a positive effect as a “pre-filter„ promoting the “dynamic membrane„ that protects the physical membrane from internal fouling. These two opposite phenomena should be properly managed, where the submerged membranes are usually subjected to a periodical cake layer removal through ordinary (permeate backwashing and air scouring) and/or irregular cleaning actions (manual physical cleaning). In this context, the physical removal of the cake layer is needed to maintain the design filtration characteristics. Nevertheless, the proper evaluation of the effect of physical cleaning operations is still contradictory and under discussion, referring in particular to the correct evaluation of fouling mechanisms. The aim of the present work was to summarize the different aspects that influence the fouling investigations, based on simple models for the evaluation of the resistance to filtration due to the cake layer, through physical cleaning operations. |
| first_indexed | 2024-03-12T06:51:27Z |
| format | Article |
| id | doaj.art-a390e32559b34313bf30a1c642fbd5d7 |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-12T06:51:27Z |
| publishDate | 2019-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-a390e32559b34313bf30a1c642fbd5d72023-09-03T00:16:33ZengMDPI AGMembranes2077-03752019-02-01922410.3390/membranes9020024membranes9020024A Brief Review on the Resistance-in-Series Model in Membrane Bioreactors (MBRs)Gaetano Di Bella0Daniele Di Trapani1Facoltà di Ingegneria e Architettura, Università degli Studi di Enna “Kore”, Cittadella universitaria, 94100 Enna, ItalyDipartimento di Ingegneria, Università degli Studi di Palermo, Viale delle Scienze, 90128 Palermo, ItalyThe cake layer deposited on the membrane modules of membrane bioreactors (MBRs), especially under a submerged configuration, represents a relevant and fundamental mechanism deeply influencing the development of membrane fouling. It negatively affects the total resistance to filtration, while exerting a positive effect as a “pre-filter„ promoting the “dynamic membrane„ that protects the physical membrane from internal fouling. These two opposite phenomena should be properly managed, where the submerged membranes are usually subjected to a periodical cake layer removal through ordinary (permeate backwashing and air scouring) and/or irregular cleaning actions (manual physical cleaning). In this context, the physical removal of the cake layer is needed to maintain the design filtration characteristics. Nevertheless, the proper evaluation of the effect of physical cleaning operations is still contradictory and under discussion, referring in particular to the correct evaluation of fouling mechanisms. The aim of the present work was to summarize the different aspects that influence the fouling investigations, based on simple models for the evaluation of the resistance to filtration due to the cake layer, through physical cleaning operations.https://www.mdpi.com/2077-0375/9/2/24cake depositionreversible and irreversible foulingMBRphysical cleaningpore blockingRIS model |
| spellingShingle | Gaetano Di Bella Daniele Di Trapani A Brief Review on the Resistance-in-Series Model in Membrane Bioreactors (MBRs) Membranes cake deposition reversible and irreversible fouling MBR physical cleaning pore blocking RIS model |
| title | A Brief Review on the Resistance-in-Series Model in Membrane Bioreactors (MBRs) |
| title_full | A Brief Review on the Resistance-in-Series Model in Membrane Bioreactors (MBRs) |
| title_fullStr | A Brief Review on the Resistance-in-Series Model in Membrane Bioreactors (MBRs) |
| title_full_unstemmed | A Brief Review on the Resistance-in-Series Model in Membrane Bioreactors (MBRs) |
| title_short | A Brief Review on the Resistance-in-Series Model in Membrane Bioreactors (MBRs) |
| title_sort | brief review on the resistance in series model in membrane bioreactors mbrs |
| topic | cake deposition reversible and irreversible fouling MBR physical cleaning pore blocking RIS model |
| url | https://www.mdpi.com/2077-0375/9/2/24 |
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