Membrane distillation combined with an anaerobic moving bed biofilm reactor for treating municipal wastewater

Kim, Hyun-Chul; Shin, Jong-Gye; Won, Seyeon; Lee, Jung-Yeol; Maeng, Sung Kyu; Song, Kyung Guen

doi:10.1016/j.watres.2014.12.048

Cited by 75 publications

(27 citation statements)

References 33 publications

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“…The Control‐1 reactor achieved the lowest total COD removal rate (83.0 ± 0.6%) because of direct discharge without membrane filtration. The Control‐2 reactor had a similar COD removal rate (92.7 ± 1.0%) to the reported conventional MBR (Kim et al., ). The total COD removal rate of the SEF‐MBR reactor was higher than that of Controls.…”

Section: Resultssupporting

confidence: 56%

A spontaneous electric field membrane bioreactor with the innovative Cu‐nanowires conductive microfiltration membrane for membrane fouling mitigation and pollutant removal

Yin

Wang

et al. 2019

Water Environment Research

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In this study, a spontaneous electric field membrane bioreactor (SEF‐MBR), equipped with the innovative Cu‐nanowires conductive microfiltration membrane, was developed to achieve membrane fouling mitigation and high‐quality effluent. The membrane fouling was significantly mitigated due to the presence of spontaneous electric field that the intensity of the spontaneous electric field in the established SEF‐MBR was up to 0.073 V/cm. After over 2‐month operation, the membrane flux of SEF‐MBR was 2.1 times that of the control reactor. The thickness of fouling layer on the Cu‐nanowires conductive membrane surface was about 80 μm, which was far thinner than that on the surface of commercial polyvinylidene fluoride (PVDF) membrane. Meanwhile, it was featured with the lower microbe density and extracellular polymeric substance (EPS) content. The effluent quality of SEF‐MBR met the first‐class discharge standards, and the removal rates were 94.5% for chemical oxygen demand (COD), 99.8% for NH4+-N, 78.5% for total nitrogen (TN), and 86.6% for total phosphorus (TP). The established system with the innovative Cu‐nanowires conductive membrane showed a promising prospect for using the spontaneous electric field to mitigate membrane fouling and achieve high‐quality effluent without extra power consumption. Practitioner points The innovative Cu‐NWs conductive microfiltration membrane was prepared. The spontaneous electric field in the novel SEF‐MBR mitigated membrane fouling. The fouling layer of the novel SEF‐MBR was thinner with lower microbe and EPS content. The effluent quality of the novel SEF‐MBR met the first‐class discharge standard.

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Section: Resultssupporting

confidence: 56%

A spontaneous electric field membrane bioreactor with the innovative Cu‐nanowires conductive microfiltration membrane for membrane fouling mitigation and pollutant removal

Yin

Wang

et al. 2019

Water Environment Research

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“…According to Antoine equation, the increase of ΔT results in more difference in vapor pressure across the membrane, creating the driving force for a higher transportation of water vapors [28]. This positive correlation between the flux and ΔT has been demonstrated in previous DCMD studies [29][30][31].…”

Section: Performance Of Dcmd Systemsmentioning

confidence: 54%

Treatment of Simulated Coalbed Methane Produced Water Using Direct Contact Membrane Distillation

Cho

Song

Yoon

et al. 2016

Water

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Expolitation of coalbed methane (CBM) involves production of a massive amount saline water that needs to be properly managed for environmental protection. In this study, direct contact membrane distillation (DCMD) was utilized for treatment of CBM-produced water to remove saline components in the water. Simulated CBM waters containing varying concentrations of NaCl (1, 20, and 500 mM) and NaHCO 3 (1 and 25 mM) were used as feed solutions under two transmembrane temperatures (∆40 and 60˝C). In short-term distillation (~360 min), DCMD systems showed good performance with nearly 100% removal of salts for all solutes concentrations at both temperatures. The permeate flux increased with the feed temperature, but at a given temperature, it remained fairly stable throughout the whole operation. A gradual decline in permeate flux was observed at ∆60˝C at high NaHCO 3 concentration (25 mM). In long-term distillation (5400 min), the presence of 25 mM NaHCO 3 further decreased the flux to 25%-35% of the initial value toward the end of the operation, likely due to membrane fouling by deposition of Ca-carbonate minerals on the pore openings. Furthermore, pore wetting by the scalants occurred at the end of the experiment, and it increased the distillate conducitivity to 110 µS¨cm´1. The precipitates formed on the surface were dominantly CaCO 3 crystals, identified as aragonite.

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“…As it is well known, a porous hydrophobic membrane is needed to separate pure water from the seawater via MD process [5][6][7]. During the MD operation, liquid water at the hot side (feed side) of the membrane will evaporate at the interface of the hot water and membrane.…”

Section: Introductionmentioning

confidence: 99%

Enhanced water desalination performance through hierarchically-structured ceramic membranes

Liu

Lei

et al. 2017

Journal of the European Ceramic Society

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Developments of membrane water desalination are impeded by low water vapor flux across the membrane. We present an innovative membrane design to significantly enhance the water vapor flux. A bilayer zirconia-based membrane with a thick hierarchically-structured support and a thin functional layer is prepared using a combined freeze drying tape casting and screen printing method. The hierarchically-structured YSZ support has a porosity of 42.6%, pores of 4.5 μm or larger, and a relatively low tortuosity of 1.58 along the thickness direction. The bilayer membrane is then converted from naturally hydrophilic to hydrophobic via grafting with a fluoroalkylsilane. A water flux of 28.7 Lm-2 h-1 and a salt rejection of 99.5% are achieved by exposing the functional layer to 80 o C salt water of 2 wt.% NaCl and the support layer to 20 o C distilled water. These results are the best performing ones for ceramic membranes in direct contact membrane distillation operation.

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Membrane distillation combined with an anaerobic moving bed biofilm reactor for treating municipal wastewater

Cited by 75 publications

References 33 publications

A spontaneous electric field membrane bioreactor with the innovative Cu‐nanowires conductive microfiltration membrane for membrane fouling mitigation and pollutant removal

A spontaneous electric field membrane bioreactor with the innovative Cu‐nanowires conductive microfiltration membrane for membrane fouling mitigation and pollutant removal

Treatment of Simulated Coalbed Methane Produced Water Using Direct Contact Membrane Distillation

Enhanced water desalination performance through hierarchically-structured ceramic membranes

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