Evaluation of chemical cleaning to control fouling on nanofiltration and reverse osmosis membranes after desalination of MBR effluent

Hacıfazlıoğlu, Mert Can; Parlar, İlker; Pek, Taylan Ö.; Kabay, Nalan

doi:10.1016/j.desal.2019.05.003

Cited by 30 publications

(12 citation statements)

References 24 publications

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“…In this case, the MBR serves as a pretreatment system and limits the number of biodegradable compounds and organic matter in the hospital wastewater for the subsequent NF treatment. The effectiveness of the MBR-NF system has been studied extensively for treating municipal landfill leachate, saltwater and brackish water for desalination, and industrial and pharmaceutical wastewater [239][240][241][242]. Recently, researchers have explored MBR-NF systems for hospital wastewater because MBRs alone are insufficient at removing all pharmaceuticals, disinfectants, metabolites, and particularly iodinated contrast media (Fig.…”

Section: Integrated Mbr-nf Systemmentioning

confidence: 99%

Membrane bioreactors for hospital wastewater treatment: recent advancements in membranes and processes

Zhao

Qiu

Mamrol

et al. 2021

Front. Chem. Sci. Eng.

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Discharged hospital wastewater contains various pathogenic microorganisms, antibiotic groups, toxic organic compounds, radioactive elements, and ionic pollutants. These contaminants harm the environment and human health causing the spread of disease. Thus, effective treatment of hospital wastewater is an urgent task for sustainable development. Membranes, with controllable porous and nonporous structures, have been rapidly developed for molecular separations. In particular, membrane bioreactor (MBR) technology demonstrated high removal efficiency toward organic compounds and low waste sludge production. To further enhance the separation efficiency and achieve material recovery from hospital waste streams, novel concepts of MBRs and their applications are rapidly evolved through hybridizing novel membranes (non hydrophilic ultrafiltration/microfiltration) into the MBR units (hybrid MBRs) or the MBR as a pretreatment step and integrating other membrane processes as subsequent secondary purification step (integrated MBR-membrane systems). However, there is a lack of reviews on the latest advancement in MBR technologies for hospital wastewater treatment, and analysis on its major challenges and future trends. This review started with an overview of main pollutants in common hospital wastewater, followed by an understanding on the key performance indicators/criteria in MBR membranes (i.e., solute selectivity) and processes (e.g., fouling). Then, an in-depth analysis was provided into the recent development of hybrid MBR and integrated MBR-membrane system concepts, and applications correlated with wastewater sources, with a particular focus on hospital wastewaters. It is anticipated that this review will shed light on the knowledge gaps in the field, highlighting the potential contribution of hybrid MBRs and integrated MBRmembrane systems toward global epidemic prevention.

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Section: Integrated Mbr-nf Systemmentioning

confidence: 99%

Membrane bioreactors for hospital wastewater treatment: recent advancements in membranes and processes

Zhao

Qiu

Mamrol

et al. 2021

Front. Chem. Sci. Eng.

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“…Wastewater treated by MBR was used by Hacýfazlýoðlu, Parlara, Pek, and Kabay (2019) as feed to nanofiltration (NF90) and reverse osmosis (BW30) membranes. They analyzed chemical cleaning strategies for the NF and RO membranes, finding that the main fouling sources were inorganic, and occasional organic cleaning (with sodium hydroxide and low concentrations of chlorine) accompanying with frequent acid cleaning (citric acid) was necessary.…”

Section: Fouling Measurement and Characterizationmentioning

confidence: 99%

Membrane processes

Arabi¹,

Pellegrin

Aguinaldo

et al. 2020

Water Environment Research

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This literature review provides a review for publications in 2018 and 2019 and includes information membrane processes findings for municipal and industrial applications. This review is a subsection of the annual Water Environment Federation literature review for Treatment Systems section. The following topics are covered in this literature review: industrial wastewater and membrane. Bioreactor (MBR) configuration, membrane fouling, design, reuse, nutrient removal, operation, anaerobic membrane systems, microconstituents removal, membrane technology advances, and modeling. Other subsections of the Treatment Systems section that might relate to this literature review include the following: Biological Fixed-Film Systems, Activated Sludge, and Other Aerobic Suspended Culture Processes, Anaerobic Processes, and Water Reclamation and Reuse. This publication might also have related information on membrane processes: Industrial Wastes, Hazardous Wastes, and Fate and Effects of Pollutants.

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“…Municipal wastewaters are mostly treated by conventional activated sludge (CAS) or membrane bioreactor (MBR) processes. The MBR process is simply an integrated treatment system of microfiltration (MF) or ultrafiltration (UF) membranes with a biological reactor where secondary effluents often include high concentrations of dissolved matter, pesticides, pathogen, heavy metals, and micropollutants [14], thus making tertiary treatment a necessity for potential water reuse. Although tertiary processes play an essential role and can be applied after the secondary process at MWWTPs, there is still a lack of information about these processes and their EDC removal capacity from environmental matrixes at trace concentration [15].…”

Section: Introductionmentioning

confidence: 99%

Exclusion of Estrogenic and Androgenic Steroid Hormones from Municipal Membrane Bioreactor Wastewater Using UF/NF/RO Membranes for Water Reuse Application

Aziz

Ojumu

2020

Membranes

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In the context of water scarcity, domestic secondary effluent reuse may be an option as a reliable source for alleviating acute water shortage. The increasing risks linked with the presence of natural steroid hormones and many emerging anthropogenic micropollutants (MPs) passing through municipal wastewater treatment works (MWWTWs) are of concern for their endocrine-disrupting activities. In this study, domestic wastewater treated by a full-scale membrane bioreactor (MBR) at an MWWTW in the Western Cape Province, South Africa, was used directly as the influent to a reverse osmosis (RO) pilot plant for the removal of selected natural steroid hormones 17β-estradiol (E2) and testosterone (T) as a potential indirect water recycling application. Estrogenicity and androgenicity were assessed using the enzyme-linked immunosorbent assays (ELISA) and the recombinant yeast estrogen receptor binding assays (YES). The influent pH and flux did not influence the rejection of E2 and T, which was most likely due to adsorption, size exclusion, and diffusion simultaneously. RO and nanofiltration (NF) exhibited excellent removal rates (>95%) for E2 and T. All the E2 effluent samples with MBR/ultrafiltration (UF), MBR/NF, and MBR/RO were lower than the US EPA and WHO trigger value of 0.7 ng/L, as well as the predicted no-effect concentration (PNEC) values for fish (1 ng E2/L).

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Evaluation of chemical cleaning to control fouling on nanofiltration and reverse osmosis membranes after desalination of MBR effluent

Cited by 30 publications

References 24 publications

Membrane bioreactors for hospital wastewater treatment: recent advancements in membranes and processes

Membrane bioreactors for hospital wastewater treatment: recent advancements in membranes and processes

Membrane processes

Exclusion of Estrogenic and Androgenic Steroid Hormones from Municipal Membrane Bioreactor Wastewater Using UF/NF/RO Membranes for Water Reuse Application

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