Next Article in Journal
Pd-Based Membranes: Overview and Perspectives
Previous Article in Journal
Sorption Thermodynamics of CO2, H2O, and CH3OH in a Glassy Polyetherimide: A Molecular Perspective
Previous Article in Special Issue
Fouling Mitigation and Wastewater Treatment Enhancement through the Application of an Electro Moving Bed Membrane Bioreactor (eMB-MBR)
Article Menu
Issue 2 (February) cover image

Export Article

Open AccessReview
Membranes 2019, 9(2), 24; https://doi.org/10.3390/membranes9020024

A Brief Review on the Resistance-in-Series Model in Membrane Bioreactors (MBRs)

1
Facoltà di Ingegneria e Architettura, Università degli Studi di Enna “Kore”, Cittadella universitaria, 94100 Enna, Italy
2
Dipartimento di Ingegneria, Università degli Studi di Palermo, Viale delle Scienze, 90128 Palermo, Italy
*
Author to whom correspondence should be addressed.
Received: 14 September 2018 / Revised: 19 December 2018 / Accepted: 20 December 2018 / Published: 1 February 2019
(This article belongs to the Special Issue Membrane Bioreactor (MBR) Technology for Wastewater Treatment)
  |  
PDF [2162 KB, uploaded 20 February 2019]
  |  

Abstract

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. View Full-Text
Keywords: cake deposition; reversible and irreversible fouling; MBR; physical cleaning; pore blocking; RIS model cake deposition; reversible and irreversible fouling; MBR; physical cleaning; pore blocking; RIS model
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Di Bella, G.; Di Trapani, D. A Brief Review on the Resistance-in-Series Model in Membrane Bioreactors (MBRs). Membranes 2019, 9, 24.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Membranes EISSN 2077-0375 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top