Analysis of fouling development under dynamic membrane filtration operation

Saleem, Mubashir; Alibardi, Luca; Cossu, Raffaello; Lavagnolo, Maria Cristina; Spagni, Alessandro

doi:10.1016/j.cej.2016.11.123

Cited by 64 publications

(18 citation statements)

References 31 publications

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“…The result obtained over the first 30 days of operation confirms a previous study (Saleem et al, 2017) which demonstrated that the mesh pore size does not significantly affect the filtration flux (Fig. 2).…”

Section: Dynamic Membrane Behavioursupporting

confidence: 90%

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Assessment of dynamic membrane filtration for biological treatment of old landfill leachate

Saleem

Spagni

Alibardi

et al. 2018

Journal of Environmental Management

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This study investigated the behaviour of dynamic membrane (DM) filtration for the treatment of stabilised landfill leachate in a bench-scale pre-anoxic and aerobic submerged dynamic membrane bioreactor (DMBR). Four meshes with different openings (10, 52, 85 and 200 μm) were tested to support the development of DM. Differences were observed among the meshes in supporting the development of the cake layer constituting the DM. The treatment of landfill leachate had an impact on sludge characteristics resulting in deteriorated filtration performance of the DM. Effluent turbidity was often higher than 100 NTU for larger mesh pore size (85 and 200 μm). Low effluent turbidity was achieved with meshes with 10 and 52 μm (13 ± 2 and 26 ± 4 NTU, respectively) although at membrane fluxes lower than 10 L m h. The bioreactor exhibited a moderate organics removal of 50-60% and an ammonia oxidation between 80 and 90%. Incomplete nitrification was observed due to increased concentrations of free ammonia and free nitrous acid, with nitrite effluent concentrations up to 1062 mgNO-N L. Due to the large presence of refractory organic matter in landfill leachate, denitrification was limited resulting in a total nitrogen removal of approximately 20%.

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Section: Dynamic Membrane Behavioursupporting

confidence: 90%

“…Short-term filtration experiment is a simple way to evaluate the performance of the coarse meshes used to develop DM (Li et al, 2012). These experiments were performed in a separate filtration system according to the procedure previously described in Saleem et al (2017).…”

Section: Short-term Filtration Experimentsmentioning

confidence: 99%

Assessment of dynamic membrane filtration for biological treatment of old landfill leachate

Saleem

Spagni

Alibardi

et al. 2018

Journal of Environmental Management

Self Cite

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“…Intermediate blocking is similar to the complete blocking model, but particles are able to deposit on other particles. Saleem et al [56] concluded that cake filtration could adequately describe fouling mechanisms in sludge formed DM filtration under constant pressure.…”

Section: Dynamic Membrane Formation Mechanismmentioning

confidence: 99%

Dynamic Membrane Filtration: Formation, Filtration, Cleaning, and Applications

2017

Chem Eng & Technol

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Applications of dynamic membrane (DM) filtration and factors affecting formation, filtration, and cleaning are introduced. DMs have been studied extensively for wastewater treatment in recent years. DM formation methods and mechanisms are explained. Effects of supporting material, deposited material, formation pressure, and pH on the DM formation are discussed in detail. The impacts of operation pressure, aeration intensity, cross-flow velocity, temperature, and other parameters on the DM filtration process are evaluated and different DM cleaning strategies are reviewed. The applications of DMs to treatments of municipal wastewater, surface water, oily water, industrial wastewater, sludge, and microalgae harvesting are discussed. Finally, possible future research directions and some guidelines for DM technology are given.

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“…However, thicker layers and dense fouling cause a loss of membrane performance. The parameters that must be taken into consideration to limit the formation of fouling are the same that are involved in the DM formation [57].…”

Section: Literature Analysis On the Microplastic And Its Removal Bmentioning

confidence: 99%

Membrane Processes for Microplastic Removal

2019

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Plastic pollution of the aquatic environment is a major concern considering the disastrous impact on the environment and on human beings. The significant and continuous increase in the production of plastics causes an enormous amount of plastic waste on the land entering the aquatic environment. Furthermore, wastewater treatment plants (WWTPs) are reported as the main source of microplastic and nanoplastic in the effluents, since they are not properly designed for this purpose. The application of advanced wastewater treatment technologies is mandatory to avoid effluent contamination by plastics. A concrete solution can be represented by membrane technologies as tertiary treatment of effluents in integrated systems for wastewater treatment, in particular, for the plastic particles with a smaller size (< 100 nm). In this review, a survey of the membrane processes applied in the plastic removal is analyzed and critically discussed. From the literature analysis, it was found that the removal of microplastic by membrane technology is still insufficient, and without the use of specially designed approaches, with the exception of membrane bioreactors (MBRs).

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Analysis of fouling development under dynamic membrane filtration operation

Cited by 64 publications

References 31 publications

Assessment of dynamic membrane filtration for biological treatment of old landfill leachate

Assessment of dynamic membrane filtration for biological treatment of old landfill leachate

Dynamic Membrane Filtration: Formation, Filtration, Cleaning, and Applications

Membrane Processes for Microplastic Removal

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