Coupling of sequencing batch reactor and mesh filtration: Operational parameters and wastewater treatment performance

Kiso, Yoshiaki; Jung, Yong-Jun; Park, Min-Soo; Wang, Wenhui; Shimase, Masahiro; Yamada, Toshiro; Min, Kil Sik

doi:10.1016/j.watres.2005.05.025

Cited by 61 publications

(20 citation statements)

References 24 publications

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“…Unlike MF/UF membranes, the coarse-pore materials themselves cannot effectively reject SS due to their over large pore size. The formation time of SFDMs, indicating how long it takes for the effluent SS concentration reaching approximate zero [1,4,[13][14][15][16], is therefore of great importance for minimizing the production of turbid effluent and retaining high biomass concentration in SFDMBRs. The filtration resistance of SFDMs indicates the minimum basic energy consumption for SS-free effluent production.…”

Section: Introductionmentioning

confidence: 99%

Effect of sludge properties on the filtration characteristics of self-forming dynamic membranes (SFDMs) in aerobic bioreactors: Formation time, filtration resistance, and fouling propensity

Liang

Meng

et al. 2013

Journal of Membrane Science

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Section: Introductionmentioning

confidence: 99%

Effect of sludge properties on the filtration characteristics of self-forming dynamic membranes (SFDMs) in aerobic bioreactors: Formation time, filtration resistance, and fouling propensity

Liang

Meng

et al. 2013

Journal of Membrane Science

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“…Kiso et al (2000) successfully operated an aerobic bioreactor equipped with a 100 μm mesh, at fluxes over 20 L/m 2 x h. Fluxes in the range 15-30 L/m 2 x h and an effluent with non detectable suspended solids were attained by Fan and Huang (2002) when operating a similar bioreactor. Positive results were also obtained by other authors, showing that dynamic self-forming membranes can be successfully used for biomass retention in aerobic bioreactors for wastewater treatment (Fuchs et al 2005;Kiso et al 2005;Wu et al 2005;Chu and Li, 2006). Both woven and non-woven materials have been tested as support for the dynamic membrane formation.…”

Section: *Corresponding Authormentioning

confidence: 74%

Anaerobic membrane bioreactors: Are membranes really necessary?

Jeison¹,

Días²,

Lier³

2008

Electron. J. Biotechnol.

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Membranes themselves represent a significant cost for the full scale application of anaerobic membrane bioreactors (AnMBR). The possibility of operating an AnMBR with a self-forming dynamic membrane generated by the substances present in the reactor liquor would translate into an important saving. A selfforming dynamic membrane only requires a support material over which a cake layer is formed, which determines the rejection properties of the system. The present research studies the application of self-forming dynamic membranes in AnMBRs. An AnMBR was operated under thermophilic and mesophilic conditions, using woven and non woven materials as support for the dynamic membranes. Results showed that the formation of a cake layer over the support materials enables the retention of more than 99% of the solids present in the reactor. However, only low levels of flux were achieved, up to 3 L/m 2 x h, and reactor operation was unstable, with sudden increases in filtration resistance, due to excessive cake layer formation. Further fine-tuning of the proposed technology involves looking for conditions that can control effectively cake layer formation.

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“…On this matter, Kiso et al (2005) suggested that the pH could influence the floc size and/or coagulation properties of sludge, which accumulates on the mesh, forming a cake layer. It could therefore be hypothesized that an increase in pH enhances the formation of the membrane.…”

Section: Discussionmentioning

confidence: 99%

Microbe removal in secondary effluent by filtration

2006

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A study was carried out to assess the efficiency of filtration in reducing microbial contamination in municipal secondary effluent. After primary and secondary treatments, the wastewater underwent filtration through sand/hydroanthracite filters. A total of 20 samplings were made, each consisting of two instant samples (secondary effluent and filtered effluent). Each of the 40 samples was tested for: total and faecal coliforms, Escherichia coli, enterococci and somatic coliphages. The mean concentrations detected in the secondary effluent were in the order of 5 log for the total and faecal coliforms, 4 log for enterococci and Escherichia coli, and approx. 3 log for the coliphages. The filtration showed a higher efficacy in the reduction of faecal coliforms, Escherichia coli and in particular total coliforms. The results obtained for enterococci and coliphages were significantly lower. Filtration alone was not enough to reduce the bacterial indicators to within Italian legal limits, and showed a poor capacity to abate coliphages. However, by performing the filtration before disinfection, secondary effluents require a lower dose of disinfectant. This results in less pollution of surface waters from by-products and a consequent reduction in the chemical risk for the general population.

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Coupling of sequencing batch reactor and mesh filtration: Operational parameters and wastewater treatment performance

Cited by 61 publications

References 24 publications

Effect of sludge properties on the filtration characteristics of self-forming dynamic membranes (SFDMs) in aerobic bioreactors: Formation time, filtration resistance, and fouling propensity

Effect of sludge properties on the filtration characteristics of self-forming dynamic membranes (SFDMs) in aerobic bioreactors: Formation time, filtration resistance, and fouling propensity

Anaerobic membrane bioreactors: Are membranes really necessary?

Microbe removal in secondary effluent by filtration

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