2017
DOI: 10.1016/j.desal.2017.02.010
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Dewatering of activated sludge by forward osmosis (FO) with ultrasound for fouling control

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Cited by 34 publications
(11 citation statements)
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“…Some reports revealed that a combination technique is necessary to improve the cleaning efficiency further. For instance, a combination of ultrasound and flushing has been reported in regenerating the membrane after dewatering activated sludge [64]; air sourcing combined with hydraulic flushing to remove the silica scale layer [4].…”
Section: Membrane Cleaningmentioning
confidence: 99%
“…Some reports revealed that a combination technique is necessary to improve the cleaning efficiency further. For instance, a combination of ultrasound and flushing has been reported in regenerating the membrane after dewatering activated sludge [64]; air sourcing combined with hydraulic flushing to remove the silica scale layer [4].…”
Section: Membrane Cleaningmentioning
confidence: 99%
“…Still, antifouling strategies should be envisioned especially in the case of sludge dewatering where cake formation is inherent to the process. The application of ultrasounds for fouling mitigation proved to impact sludge flocs; mitigation of fouling deposition was observed only under mild/controlled conditions—continuous ultrasound radiation applications may cause high organic release from sludge flocs, thus leading to higher fouling rate [ 165 , 166 ]. Module scale testing considering adapted module design to tackle clogging, and high solid concentration issues and anti-fouling strategies are still to be evaluated to further assess the potential of FO for sludge concentration.…”
Section: Applications Of Fo As Concentrating Processmentioning
confidence: 99%
“…The driving force for FO is the osmotic pressure gradient across the semi-permeable membrane, and no external driving force is required [23]. FO is currently applied to biosolid separation in wastewater treatment and food processing [24]. Buckwatter et al reported that FO is considered as a partial dewatering method for microalgae growing on wastewater in a marine environment, using artificial seawater as the draw solution; average dewatering rates of 2 L/m 2 membrane/h were observed [21].…”
Section: Introductionmentioning
confidence: 99%