Journal
CHEMICAL ENGINEERING JOURNAL
Volume 288, Issue -, Pages 798-805Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2015.12.060
Keywords
Membrane photoreactor; Secondary effluent; Colloid; Fouling; Backpulse
Categories
Funding
- Korea Environmental Industry & Technology Institute - Korean Ministry of Environment [2015001640004]
- Korea Environmental Industry & Technology Institute (KEITI) [ARQ201507013002] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ask authors/readers for more resources
Secondary effluent organic matter (SEOM) is an unwanted constituent that impairs the reuse of wastewater effluent. The potential of a membrane photoreactor (MPR) involving TiO2 photocatalysts and submerged microfiltration (MF) membranes was investigated with regard to SEOM degradation and fouling control. Colloidal particles interfered with the photocatalysis of the SEOM when accumulated inside the reactor. Air bubbles, which were continuously supplied to disturb the cake formation at the membrane surface, also hindered the photocatalytic performance due to light scattering. Intermittent bubble-free backpulsing was attempted and found to help improve membrane permeability, with considerably reduced energy requirements, while detaching photocatalysts from the membrane. Bubbleless backpulsing for short periods (30 s every 1 h) at low pressures (0.5 bar) was effective in reversing the fouling layers. MPR treatments removed >60% of the SEOM at a hydraulic residence time of 140 min, degrading a wide range of SEOM molecules. The synergistic reactions of adsorption and photocatalysis of the SEOM at the TiO2 surfaces induced their self-sustaining capability after rapid organics sequestration. (C) 2015 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available