Wastewater treatment performance of a filtration bio-reactor equipped with a mesh as a filter material

Kiso, Yoshiaki; Jung, Yong-Jun; Ichinari, Takashi; Park, Minsoo; Kitao, Teijiro; Nishimura, Kazuyuki; Min, Kyung Sok

doi:10.1016/s0043-1354(00)00201-3

Cited by 130 publications

(41 citation statements)

References 19 publications

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“…If the latter resistance is considered, a TMP of 0.9 bar would be required for achieving a flux of about 10 L/m 2 x h. The filtration performances obtained during this research contrast with those reported for aerobic MBRs with dynamic membrane formation, where stable operation is reported, at moderate to high fluxes (Kiso et al 2000;Fan and Huang, 2002). Most likely explanation for these differences is different floc morphology and particle size distribution.…”

Section: Operation Of the Mesophilic Anmbr (Runs 2 And 3)contrasting

confidence: 60%

“…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).…”

Section: *Corresponding Authormentioning

confidence: 99%

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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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Section: Operation Of the Mesophilic Anmbr (Runs 2 And 3)contrasting

confidence: 60%

Section: *Corresponding Authormentioning

confidence: 99%

Anaerobic membrane bioreactors: Are membranes really necessary?

Jeison¹,

Días²,

Lier³

2008

Electron. J. Biotechnol.

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“…Therefore, it is considered as a substitute to the conventional membrane bioreactor (MBR) (Kiso et al, 2004;Gander et al, 2000;Chu and Li, 2006). Dynamic membrane is formed on the underlying support mesh when filtering a solution containing fine particles, thus is also called secondary membrane (Kuberkar and Davis, 2000).…”

Section: Introductionmentioning

confidence: 99%

Bio-diatomite dynamic membrane reactor for micro-polluted surface water treatment

Chu

Cao²,

Dong

et al. 2010

Water Research

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Keywords:Bio-diatomite dynamic IntroductionThe dynamic membrane technology for wastewater treatment has gained great attention in recent years due to its cost-effective membrane module, reduced energy consumption and high effluent quality. Therefore, it is considered as a substitute to the conventional membrane bioreactor (MBR) (Kiso et al., 2004;Gander et al., 2000;Chu and Li, 2006). Dynamic membrane is formed on the underlying support mesh when filtering a solution containing fine particles, thus is also called secondary membrane (Kuberkar and Davis, 2000). The dynamic membrane formed on the relatively large-pore mesh increases the intrinsic membrane retention capacity (Alavi Moghaddam et al., 2002a,b), leading to a high solid-liquid separation efficiency and a high filtration flux (Seo et al., 2002(Seo et al., , 2007Fuchs et al., 2005). Dynamic membrane is also more convenient to clean than membrane reactor. Tap water backwash, air backwash or mechanical brushing can readily clean the dynamic membrane without using any chemical reagents (Al-Malack and Anderson, 1997;Fan and Huang, 2002;Ye et al., 2006). It was reported that diatomite particles could be used as carriers for microorganisms (Zhao et al., 2006). The microbial colonies can form zoogloeas on diatomite particles through microbial capsules and surface mucus and bio-diatomite is thus named. The bio-diatomite reactor, which combines * Corresponding author. Tel.: þ86 21 65982691; fax: þ86 21 65982313.E-mail addresses: chq123zl@hotmail.com (H. Chu), dbz77@tongji.edu.cn (B. Dong).A v a i l a b l e a t w w w . s c i e n c e d i r e c t . c o m j o u r n a l h o m e p a g e : w w w . e l s e v i e r . c o m / l o c a t e / w a t r e s w a t e r r e s e a r c h 4 4 ( 2 0 1 0 ) 1 5 7 3 -1 5 7 9

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“…The dynamic membrane process is one of the methods to solve the problems of membrane fouling. For dynamic membrane preparation, the cheaper filter media such as mesh, non-woven fabric and filter-cloth are used as supporter [6]- [8]. Dynamic membrane could be formed and re-formed in-situ on the supporter.…”

Section: Introductionmentioning

confidence: 99%

Mathematical Modeling of Operation Process of Dynamic Membrane Bioreactor

Lin¹,

Zhang²,

Hong³

2016

IJBBB

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Abstract:The effects of different influent C/N ratios on the removal efficiencies of COD, total nitrogen, ammonia, nitrite and nitrate were investigated in a dynamic membrane bioreactor (DMBR), which was used to treat synthetic domestic wastewater. A simplified activated sludge model(SASM) was proposed, which based on the activated sludge model No.1(ASM1). The results showed the effluent concentrations of COD were less than 50 mg·L -1 in the DMBR. The removal efficiencies of COD were more than 85% in the different C/N ratios. The effluent concentrations of total nitrogen and ammonia were gradually increased as the ratios of C/N decreased. When the ratio of C/N was more than 6.75, the removal efficiencies of total nitrogen and ammonia were more than 50% and 60%, respectively. The SASM was feasible for DMBR simulation and the simulated values of nitrite and nitrate almost equal to the experiment values.

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Wastewater treatment performance of a filtration bio-reactor equipped with a mesh as a filter material

Cited by 130 publications

References 19 publications

Anaerobic membrane bioreactors: Are membranes really necessary?

Anaerobic membrane bioreactors: Are membranes really necessary?

Bio-diatomite dynamic membrane reactor for micro-polluted surface water treatment

Mathematical Modeling of Operation Process of Dynamic Membrane Bioreactor

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