Characterization and C-, N-disinfection byproduct formation of dissolved organic matter in MBR and anaerobic-anoxic-oxic (AAO) processes

Meng, Yingjie; Wang, Miaomiao; Guo, Bo; Zhu, Fanping; Wang, Yan; Lü, Jun; Ma, Defang; Sun, Yangyang; Gao, Baoyu

doi:10.1016/j.cej.2017.01.009

Cited by 39 publications

(7 citation statements)

References 45 publications

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“…These samples were once again filtered and the filtrate from this process was referred to as the EPS [6,38]. Photometric methods from Frølund et al and DuBois et al were then used to analyze both the protein and carbohydrates components of EPS and SMP [6,35,36,39], respectively, using bovine serum albumin (BSA) (Sigma, St. Louis, MO, USA) and D-glucose (Sigma, St. Louis, MO, USA) as standards. A method used and developed in a previous study [23] was used to analyze the TEP concentration.…”

Section: Methodsmentioning

confidence: 99%

Fouling Mitigation and Wastewater Treatment Enhancement through the Application of an Electro Moving Bed Membrane Bioreactor (eMB-MBR)

et al. 2018

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High operational cost due to membrane fouling propensity remains a major drawback for the widespread application of membrane bioreactor (MBR) technology. As a result, studies on membrane fouling mitigation through the application of integrated processes have been widely explored. In this work, the combined application of electrochemical processes and moving bed biofilm reactor (MBBR) technology within an MBR at laboratory scale was performed by applying an intermittent voltage of 3 V/cm to a reactor filled with 30% carriers. The treatment efficiency of the electro moving bed membrane bioreactor (eMB-MBR) technology in terms of ammonium nitrogen (NH4-N) and orthophosphate (PO4-P) removal significantly improved from 49.8% and 76.7% in the moving bed membrane bioreactor (MB-MBR) control system to 55% and 98.7% in the eMB-MBR, respectively. Additionally, concentrations of known fouling precursors and membrane fouling rate were noticeably lower in the eMB-MBR system as compared to the control system. Hence, this study successfully demonstrated an innovative and effective technology (i.e., eMB-MBR) to improve MBR performance in terms of both conventional contaminant removal and fouling mitigation.

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Section: Methodsmentioning

confidence: 99%

Fouling Mitigation and Wastewater Treatment Enhancement through the Application of an Electro Moving Bed Membrane Bioreactor (eMB-MBR)

et al. 2018

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“…The membrane fouling sample was prepared with the experimental membrane taken from the FO module, and it was naturally dried in glassware (12310, Labselect, Hefei, China) for 24 h. Generally, membrane characterization includes different dimensions, such as membrane thickness, membrane morphology, and the composition of pollutant elements. These characteristics were investigated via scanning electron microscope and energy dispersive scanning (EDS-SEM) (SU-8000, Hitachi, Tokyo, Japan) [42,43]. In real aquaculture wastewater, the composition of organic pollutants is complex and three-dimensional fluorescence spectroscopy (F4500, HITACHI, Japan) can be used to characterize the variations in dissolved organic compounds in both DS and FS.…”

Section: Analysis Of Membrane Morphology and Pollutantsmentioning

confidence: 99%

Treatment of Wastewater from a Grass Carp Pond with Multiple-Batch Forward Osmosis by Using Sucrose as a Draw Solution

Cheng

2022

Sustainability

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Forward osmosis (FO), a green and economical membrane technology driven by a natural concentration gradient, has attracted increasing attention for wastewater treatment because it consumes less energy and removes large amounts of pollutants. In this research, an approach based on an FO mechanism that could improve the concentration of organic pollutants in wastewater collected from grass carp ponds was proposed. The wastewater serving as a feed solution (FS) was concentrated by FO, and sucrose was used as a draw solution (DS). The multiple chemical oxygen demand (COD) variation, the water flux, and the reverse solute flux during the FO process were investigated. The results indicated that the water flux and the reverse solute flux had similar trends in the processing of batch experiments 1–8, and the concentrating multiple of organic contaminants reached a maximum of 3.5 in the whole study. In addition, membrane fouling was studied via a scanning electron microscope (SEM), and a loose cake layer was deposited on the membrane surface. Moreover, findings from energy dispersive scanning (EDS) analysis showed that the fouling substances in the support layer of the membrane were mainly organic compounds and silica. In contrast, the dominant contaminants of the active layer contained several microelements (such as K and Ca) in addition to organic compounds. Three-dimensional (3D) fluorescence analysis confirmed that the FS components could enter the DS and the chemical components of the sucrose solution could also enter the FS. The findings of this study provide a new view on selecting a DS and protecting the aquaculture environment.

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“…Therefore, a systematic evaluation of the DBP formation reactivity of DOM may foster our understanding of the Cl-DBP FP variation. According to previous studies (He et al, 2020a;Meng et al, 2017;Xue et al, 2017), DBP FP per unit of DOC can be used to assess the reactivity of DOM in DBP formation. As is shown in Fig.…”

Section: Effect Of Od and Aao Processes On Cl-dbp Formationmentioning

confidence: 99%

Effect of oxidation ditch and anaerobic-anoxic-oxic processes on CX3R-type disinfection by-product formation during wastewater treatment

Lin

Wang

Zhang

et al. 2021

Science of The Total Environment

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Biological treatment enhanced the formation of a series of DBPs, especially Br-DBPs. • Biological treatment reduced the DOC and UV 254 but increased the DON and SUVA. • Biological treatment increased the DON/ DOC ratio and bromide/DOC ratio. • SMP-and humic acid-like matters increased significantly after OD and AAO treatment. • High MW fractions were transformed into low MW fractions after OD and AAO processes.

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Characterization and C-, N-disinfection byproduct formation of dissolved organic matter in MBR and anaerobic-anoxic-oxic (AAO) processes

Cited by 39 publications

References 45 publications

Fouling Mitigation and Wastewater Treatment Enhancement through the Application of an Electro Moving Bed Membrane Bioreactor (eMB-MBR)

Fouling Mitigation and Wastewater Treatment Enhancement through the Application of an Electro Moving Bed Membrane Bioreactor (eMB-MBR)

Treatment of Wastewater from a Grass Carp Pond with Multiple-Batch Forward Osmosis by Using Sucrose as a Draw Solution

Effect of oxidation ditch and anaerobic-anoxic-oxic processes on CX3R-type disinfection by-product formation during wastewater treatment

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