Membrane fouling in aerobic granular sludge (AGS)-membrane bioreactor (MBR): Effect of AGS size

Zhang, Wenxiang; Jiang, Feng

doi:10.1016/j.watres.2018.07.069

Cited by 233 publications

(29 citation statements)

References 33 publications

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“…Nevertheless, the in-series combination between AGS and MBR appears undoubtedly a very promising solution for the treatment of high strength industrial wastewater, in order to enhance system compactness as well as energy saving for the operation of the membrane compartment. Indeed, the ability of AGS to withstand high organic loading rates coupled to the high-quality effluent (free of particulate matter) of MBRs makes this combination attractive [25]. Therefore, system configurations involving the coupling of AGS and MBR in separate compartments should be examined, also due to the lack of knowledge on this topic.…”

Section: Introductionmentioning

confidence: 99%

Treatment of high strength industrial wastewater with membrane bioreactors for water reuse: Effect of pre-treatment with aerobic granular sludge on system performance and fouling tendency

Trapani

Corsino

Torregrossa

et al. 2019

Journal of Water Process Engineering

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In this study, the treatment of citrus wastewater with membrane bioreactors (MBRs) under different configurations was investigated for water reuse. In particular, one MBR and one aerobic granular sludge MBR (AGS+MBR) bench scale plants were operated for 60 days. The experimental campaign was divided into two periods. In Phase I, a conventional hollow fiber MBR was employed for the treatment of the raw high strength wastewater, whereas in Phase II a combination of in-series reactors (AGS plus MBR) was adopted for the treatment of the high strength citrus wastewater The results demonstrated that both plant configurations enabled very high COD removal, with average values close to 99%. Respirometric batch tests revealed a considerable high metabolic activity of the biomass in both plant configurations, with higher values in the AGS+MBR. It was speculated that the MBR reactor enriched in active biomass deriving from the erosion of the external granule layers in the upstream reactor. In terms of fouling tendency, higher resistance to filtration was observed in the AGS+MBR plant, also characterized by higher irremovable resistance increase compared to the MBR plant that might severely affect the membrane service life.

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Section: Introductionmentioning

confidence: 99%

Treatment of high strength industrial wastewater with membrane bioreactors for water reuse: Effect of pre-treatment with aerobic granular sludge on system performance and fouling tendency

Trapani

Corsino

Torregrossa

et al. 2019

Journal of Water Process Engineering

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“…The benefits of membrane systems include less complexity, easier operation, less man power needed, less chemical usage, the ability in treating a broad range of contaminants etc. [10][11][12]. Nowadays, the membrane-based technology is widely used to meet the growing demand of clean water [9,13].…”

Section: Introductionmentioning

confidence: 99%

“…Membrane fouling is caused by the settling of suspended particles or dissolved substances on its surface, pore openings, or within its pores. Membrane fouling is affected by many factors including foulant type, operation modes, composition of feed water, membrane materials and so on, which makes it very complex [12,18]. Extensive effort has been dedicated to the control and mitigation of membrane fouling which comprises chemical/physical cleaning, biologically-based methods, fabrication of anti-fouling membranes, and optimization of operation parameters [19].…”

Section: Introductionmentioning

confidence: 99%

Filtration Performances of Different Polysaccharides in Microfiltration Process

et al. 2019

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Membrane technology has been widely applied for water treatment, while membrane fouling still remains a big challenge. The polysaccharides in extracellular polymeric substances (EPS) have been known as a significant type of foulant due to their high fouling propensity. However, polysaccharides have many varieties which definitely behave differently in membrane filtration. Therefore, in this study, different polysaccharides alginate sodium and xanthan gum were chosen to study their effects on membrane fouling in a wide concentration range. The results demonstrated that the filtration behaviors of alginate sodium and xanthan gum were completely different, which was due to their different molecular structures. Alginate had a small molecular weight and it was easy for alginate to penetrate membrane pores resulting in pore blocking. A series of concentrations of alginate including 5 mg/L, 10 mg/L, 20 mg/L, 30 mg/L, 40 mg/L, and 50 mg/L were examined and it was found that the permeate flux decline highly depended on the level of alginate in the feed water. While for the filtration of xanthan gum, the same concentration of xanthan gum led to more serious fouling than that observed in alginate, which might be due to its large molecule. In addition, calcium chloride was added in the solutions of both alginate and xanthan gum to examine the influence of a divalent cation on polysaccharide fouling. A “unimodal” peak can be observed in the fouling propensity caused by Ca2+ and alginate with increasing the concentration of alginate. Such a phenomenon was not found in the fouling of xanthan gum and Ca2+ led to more serious fouling for all concentrations of xanthan gum. In light of this, this study gave new insights into the fouling propensities of different polysaccharides.

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“…Both grape fruits and mulberry fruits are excellent sources of polyphenols, 15 but they are quite different in terms of bioactive compounds and mineral composition, [16][17][18] making the dedicated investigation on mulberry wine micro-ltration necessary. Moreover, membrane fouling is a complex outcome of feed characteristics, 12,19 membrane properties 13,20 and operating conditions, 21 which necessitates a particular attention of research work.…”

Section: Introductionmentioning

confidence: 99%

Fouling analysis and permeate quality evaluation of mulberry wine in microfiltration process

Xiong

Liu

et al. 2020

RSC Adv.

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Membrane fouling in aerobic granular sludge (AGS)-membrane bioreactor (MBR): Effect of AGS size

Cited by 233 publications

References 33 publications

Treatment of high strength industrial wastewater with membrane bioreactors for water reuse: Effect of pre-treatment with aerobic granular sludge on system performance and fouling tendency

Treatment of high strength industrial wastewater with membrane bioreactors for water reuse: Effect of pre-treatment with aerobic granular sludge on system performance and fouling tendency

Filtration Performances of Different Polysaccharides in Microfiltration Process

Fouling analysis and permeate quality evaluation of mulberry wine in microfiltration process

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