Abstract
The effectiveness of a high voltage impulse (HVI) technique in mitigating the membrane fouling occurring in membrane bioreactors was examined. After the activated sludge was membrane filtered, the cake layer was removed by either water-washing cleaning (experimental control) or HVI cleaning. The flux recoveries after HVI induction were always higher than those of the control. The effect of HVI induction on the sludge properties was also examined. The mixed liquor suspended solids (MLSS) concentration decreased with increasing HVI contact time, while the concentrations of soluble-chemical oxygen demand (SCOD), -total nitrogen (TN), -total phosphorus (TP), -polysaccharide, and -protein in the bulk solution increased, indicating that the flocs and cells were damaged by the HVI induction. These results suggest that the HVI induction led to sludge solubilization, which loosened the tightly deposited cake layer on the membrane surface, hence allowing it to be easily dislodged from the membrane surface.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
