Issue 10, 2024

Dye wastewater treatment and membrane fouling in a moving bed-UV-photocatalytically modified membrane bioreactor

Abstract

A moving bed-UV-photocatalytically modified membrane bioreactor (MB-UVPMBR) system effectively removed organic matter, and the removal efficiency of Lanasol blue 3R (LB) reached 85.1%, which was significantly greater than that of a moving bed membrane bioreactor (MBMBR) system. The dye removal efficiency of the system was enhanced as a result of the degradation of LB by a polyvinylidene fluoride (PVDF)/TiO2-modified membrane under UV irradiation. An analysis of the membrane resistance distributions of the two systems revealed that the main cause of membrane fouling was the deposition of a cake layer on the membrane surface. Compared with the membrane in the MBMBR system, the membrane in the MB-UVPMBR system exhibited a 67.5% reduction in total filtration resistance, which was attributed to the hydrophilicity and photocatalytic properties of the PVDF/TiO2-modified material. Overall, the removal efficiency of organic pollutants in the MB-UVPMBR system was better than that in the MBMBR system.

Graphical abstract: Dye wastewater treatment and membrane fouling in a moving bed-UV-photocatalytically modified membrane bioreactor

Supplementary files

Article information

Article type
Paper
Submitted
04 Jun 2024
Accepted
24 Jul 2024
First published
24 Jul 2024

Environ. Sci.: Water Res. Technol., 2024,10, 2478-2490

Dye wastewater treatment and membrane fouling in a moving bed-UV-photocatalytically modified membrane bioreactor

J. Luo, T. Liu, W. Chen, C. Dong and J. Liu, Environ. Sci.: Water Res. Technol., 2024, 10, 2478 DOI: 10.1039/D4EW00474D

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