Influence of relaxation frequency on membrane fouling control in submerged anaerobic membrane bioreactor (SAnMBR)

Annop, S.; Sridang, P.; Puetpaiboon, Udomphon; Grasmick, A.

doi:10.1080/19443994.2013.802258

Cited by 9 publications

(6 citation statements)

References 35 publications

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“…According to Annop et al [201], prolonged filtration-relaxation under anaerobic condition expedites the formation of biofilm on the membrane. This is because of the massive transportations of foulants towards the membrane surface, and this often resulted in high polarization [174,202,203].…”

Section: Anaerobic Processes In Mbr (Anmbr)mentioning

confidence: 99%

“…This is because as the activated sludge aged (SRT), the viscosity increases and the foulants such as particulates, EPS and SMP easily get polarized on the membrane to form cake layer [206,207]. However, some of the noticeable approach used to mitigate fouling in AnMBR system includes BAF [62] and intermittent frequent filtration-relaxation [201] which have presented some improvement in terms of steady filtration and pollutants removals, particularly the COD and TSS.…”

Section: Anaerobic Processes In Mbr (Anmbr)mentioning

confidence: 99%

“…Figure 8b denotes the fouling mechanism at the steady stage, the TMP is observed rising gradually due to the growing films or gel layer on the membrane pores and surface. However, the rate of gel formation can be palliated by adopting good practicings such as frequent back-washing and intermittent filtration-relaxation operation [201,254]. On the contrary, poor control of fouling encourages the growth of bio-layer.…”

Section: Steady Fouling Stagementioning

confidence: 99%

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Treatment of Palm Oil Mill Effluent Using Membrane Bioreactor: Novel Processes and Their Major Drawbacks

Abdulsalam

Man

Idris

et al. 2018

Water

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Over the years, different types of alternative technologies have been developed and used for palm oil mill effluent (POME) treatment. Specifically, membrane bioreactor (MBR) has been employed to relegate pollutants contained in POME under different operating conditions, and the technology was found to be promising. The major challenge impeding the wider application of this technology is membrane fouling, which usually attracts high operating energy and running cost. In this regard, novel methods of mitigating membrane fouling through the treatment processes have been developed. Therefore, this review article specifically focuses on the recent treatment processes of POME using MBR, with particular emphasis on innovative processes conditions such as aerobic, anaerobic, and hybrid processing as well as their performance in relation to fouling minimization. Furthermore, the effects of sonication and thermophilic and mesophilic conditions on membrane blockage were critically reviewed. The types of foulants and fouling mechanism as influenced by different operating conditions were also analyzed censoriously.

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Section: Anaerobic Processes In Mbr (Anmbr)mentioning

confidence: 99%

Section: Anaerobic Processes In Mbr (Anmbr)mentioning

confidence: 99%

Section: Steady Fouling Stagementioning

confidence: 99%

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Treatment of Palm Oil Mill Effluent Using Membrane Bioreactor: Novel Processes and Their Major Drawbacks

Abdulsalam

Man

Idris

et al. 2018

Water

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“…The relaxation operation influences the efficiency for an anaerobic submerged MBR for palm oil mill effluent as studied by Annop et al [69]. In this study, four runs were used to obtain an optimized relaxation interval.…”

Section: Fouling Control Using a Relaxation Operationmentioning

confidence: 99%

Fouling control strategy for submerged membrane bioreactor filtration processes using aeration airflow, backwash, and relaxation: a review

Yusuf

Wahab

Sahlan

2016

Desalination and Water Treatment

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A B S T R A C TAs of today, the application of membrane bioreactors (MBRs) in wastewater treatment plants has become significantly important in various industries. The success of MBR is mainly because of the effective membrane technology used in this kind of reactor. However, membrane technology does not escape from several drawbacks, which includes high maintenance costs and fouling problems. In order to run a plant with both an optimum capability and cost, an in-depth understanding of the behavior of filtration systems is very important to the plant operator. In this paper, we review and have considered the fouling control techniques applied to submerged membrane filtration processes including hollow fiber membranes and flat sheet types of membrane filtration. The review covers the techniques involving operational parameters, such as aeration, backwashing, and relaxation. In addition, in this paper, the modeling techniques and available automatic control techniques, using stated parameters to control fouling in membrane filtration processes, are presented. The performance results of each technique are then discussed and reviewed.

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“…Backflushing has become one of the standard procedures integrated with any crossflow filtration system for oily wastewater separation [24]. It can also be coupled with a pressure relaxation process or intermittent filtration to combat fouling as in activated sludge membrane bioreactor (MBRs) [25][26][27]. In this process, water reclamation is achieved by the settling of the sludge [25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of the Novel Periodic Feed Pressure Technique in Minimizing Fouling during the Filtration of Oily Water Systems using Ceramic Membranes

Echakouri¹,

Salama²,

Henni³

2022

Preprint

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Fouling represents a bottleneck problem for promoting the use of membranes in filtration and separation applications. It becomes even more persistent when it comes to the filtration of fluid emulsions. In this case, a gel-like layer that combines droplets, impurities, salts, and other materials form at the membrane's surface, blocking its pores. It is, therefore, a privilege to combat fouling by minimizing the accumulation of these droplets that work as seeds for other incoming droplets to cluster and coalesce with. In this work, we explore the use of the newly developed and novel periodic feed pressure technique (PFPT) in combating the fouling of ceramic membranes upon the filtration of oily water systems. The PFPT is based on alternating the applied transmembrane pressure (TMP) between the operating one and zero. A PFPT cycle is composed of a filtration half-cycle and a cleaning half-cycle. Permeation occurs when the TMP is set at its working value, while the cleaning occurs when it is zero. Three PFPT patterns were examined over two feeds of oily water systems with oil contents of 100 and 200ppm, respectively. The results show that the PFPT is very effective in minimizing the problem of fouling compared to a non-PFPT normal filtration. Furthermore, the overall drops in permeate flux during the cleaning half cycles are compensated by appreciable enhancement due to the significant elimination of fouling development such that the overall production of filtered water is even increased. Inspection of the internal surface of the membrane post rinsing at the end of the experiment proves that all PFPT cycles maintained the ceramic membranes as clean after a 2-hours operation. This can ensure a prolonged lifespan of the ceramic membrane use and a continuous greater permeate volume production. The advantage of the PFPT is that it can be implemented on existing units with minimal modification, ease of operation, and saving energy.

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Influence of relaxation frequency on membrane fouling control in submerged anaerobic membrane bioreactor (SAnMBR)

Cited by 9 publications

References 35 publications

Treatment of Palm Oil Mill Effluent Using Membrane Bioreactor: Novel Processes and Their Major Drawbacks

Treatment of Palm Oil Mill Effluent Using Membrane Bioreactor: Novel Processes and Their Major Drawbacks

Fouling control strategy for submerged membrane bioreactor filtration processes using aeration airflow, backwash, and relaxation: a review

Experimental Investigation of the Novel Periodic Feed Pressure Technique in Minimizing Fouling during the Filtration of Oily Water Systems using Ceramic Membranes

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