Integrated approach to characterize fouling on a flat sheet membrane gravity driven submerged membrane bioreactor

L. Fortunato, S. Jeong, Y. Wang, A.R. Behzad, T.O. Leiknes
Bioresource Technology 222, pp. 335-343, (2016)

Integrated approach to characterize fouling on a flat sheet membrane gravity driven submerged membrane bioreactor

Keywords

Fouling, Membranes, Organic carbon

Abstract

​Fouling in membrane bioreactors (MBR) is acknowledged to be complex and unclear. An integrated characterization methodology was employed in this study to understand the fouling on a gravity-driven submerged MBR (GD-SMBR). It involved the use of different analytical tools, including optical coherence tomography (OCT), liquid chromatography with organic carbon detection (LC-OCD), total organic carbon (TOC), flow cytometer (FCM), adenosine triphosphate analysis (ATP) and scanning electron microscopy (SEM). The three-dimensional (3D) biomass morphology was acquired in a real-time through non-destructive and in situ OCT scanning of 75% of the total membrane surface directly in the tank. Results showed that the biomass layer was homogeneously distributed on the membrane surface. The amount of biomass was selectively linked with final destructive autopsy techniques. The LC-OCD analysis indicated the abundance of low molecular weight (LMW) organics in the fouling composition. Three different SEM techniques were applied to investigate the detailed fouling morphology on the membrane.

Code

DOI: 10.1016/j.biortech.2016.09.127

Sources

Website

See all publications 2016