Characteristics and formation mechanism of membrane fouling in a full-scale RO wastewater reclamation process: Membrane autopsy and fouling characterization

Zheng, Liping; Yu, Dawei; Wang, Gang; Yue, Zenggang; Chun, Zhang; Wang, Yawei; Zhang, Junya; Wang, Jun; Liang, Guoliang; Wei, Yuansong

doi:10.1016/j.memsci.2018.06.043

Cited by 101 publications

(24 citation statements)

References 56 publications

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“…Feed water conductivity seasonal variation Figure 3 illustrates the variations of the feed water conductivity supplying the treatment plant. The conductivity experienced significant seasonal fluctuations [14,26,31]. It was enhanced during the summer attaining 2512.3 µS/cm.…”

Section: Feed Water Seasonal Variationsmentioning

confidence: 99%

“…In long term, if the antiscalant's dose and the recovery rate are not rectified, subsequently the membranes would undergo a heavy scaling or even irreversible fouling which will cause a decline in the membrane production [31]. [14,26,31,44].The temperature increased during summer attaining 22°C and diminished throughout winter attaining the value 10.4°C [31].…”

Section: Feed Water Seasonal Variationsmentioning

confidence: 99%

“…To restitute the initial performance of RO unit and control the fouling phenomenon [47], the Dow FilmTec TM company recommended to carry out a standard chemical cleaning, applying basic (1% 4Na-EDTA + 0.1% NaOH) and acidic (0.2% HCl) chemical solutions [26,31,48].…”

Section: Performance Assessment Of the Plant Normalized Datamentioning

confidence: 99%

“…However, RO technique is still limited by the membrane fouling phenomenon. The key interest of the preliminary treatment steps is the elimination of solids in suspension, colloids, and dissolved matters, avoiding bacterial development, and preventing scaling problems [23][24][25][26]. The RO performance is impacted by fouling formation, which leads to the augmentation in power consumption, cleanup frequency and consumption of cleaning products, membrane substitution and water treatment expense [27].…”

Section: Introductionmentioning

confidence: 99%

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Impact of the Raw Water Seasonal Variations on the Reverse Osmosis Performance: Khenifra Plant, Morocco

Boulahfa

Belhamidi

Elhannouni

et al. 2019

J. of Wat. & Envir. Tech.

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Reverse osmosis (RO) plays an outstanding role in water desalination worldwide. Performance of this technique depends on membrane fouling and the raw water seasonal variations, especially temperature and raw water salt concentration. Hence, to neutralize the impact of temperature and feed concentration on the performance parameters, the data collected from the brackish surface water plant were standardized through the use of the American Society for Testing and Materials methods. The value of this normalization is to be able to discern the performance variation which is due to the membrane aging and the membrane fouling, scaling or degradation. The present research investigates the real industrial results gathered from the first experience of brackish surface water demineralization by RO in Morocco. The results obtained evidently show that the feed water is subject to serious seasonal variations in terms of feed temperature and feed salts concentration, which noticeably affect the feed pressure, membrane permeability, and permeate conductivity. The standardized permeate flow, standardized pressure drop, and standardized salt passage show that the performance of the plant was steady all over the period of the monitoring and the observed performance decline-was due to membrane fouling.

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Section: Feed Water Seasonal Variationsmentioning

confidence: 99%

Section: Feed Water Seasonal Variationsmentioning

confidence: 99%

Section: Performance Assessment Of the Plant Normalized Datamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Impact of the Raw Water Seasonal Variations on the Reverse Osmosis Performance: Khenifra Plant, Morocco

Boulahfa

Belhamidi

Elhannouni

et al. 2019

J. of Wat. & Envir. Tech.

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“…Over the past 15 years membrane filtration, which uses a polymer or similar material with an extremely small pore size, has become increasingly popular in industrial processes where reliable and repeatable purification or concentration are required [3]. The technology is now being applied widely in dye manufacturing and textile coloring [4]. This article sets out to explain how membrane filtration works and where it can be used successfully in the dye industry.…”

Section: Introductionmentioning

confidence: 99%

Surface Modification of TiO2 @Pvc Composite Membrane for Textiledye House (Brome Phenol Blue) Filtration

2020

PCII

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The continued increase in the costs of chemicals, energy and water makes their recovery more important today than it was years ago when separation techniques by membrane filtration were first introduced to the textile industry. The aim of introducing membrane filtration is not only to reduce water consumption and wastewater streams. The paper describes the results of research works and implementation project concerning cleaner technology and water reuse in textile dye house by TiO2 @PVC composite membrane. Fabricated membranes were characterized with various analytical and experimental techniques. Results showed that the TiO2 blend TiO2 @PVC composite membrane were nano porous in nature with improved porosity and permeability. Addition of TiO2 improved the mechanical stability and water permeability of the composite membranes.TiO2 doped membrane showed better dye rejection behavior with a permeate flux. Size and charge based exclusions along with adsorption were identified as the separating principles. Fouling analysis clearly showed that TiO2 incorporated membranes possessed better antifouling effect than membrane without TiO2 .Thus the TiO2 blended TiO2 @PVC composite membrane are promising for the treatment of dye polluted wastewater.

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Commissioning a High‐Recovery Brackish Groundwater Desalination Plant in San Antonio

Shirazi¹,

Hernández²,

Morrison³

2019

Journal AWWA

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Characteristics and formation mechanism of membrane fouling in a full-scale RO wastewater reclamation process: Membrane autopsy and fouling characterization

Cited by 101 publications

References 56 publications

Impact of the Raw Water Seasonal Variations on the Reverse Osmosis Performance: Khenifra Plant, Morocco

Impact of the Raw Water Seasonal Variations on the Reverse Osmosis Performance: Khenifra Plant, Morocco

Surface Modification of TiO2 @Pvc Composite Membrane for Textiledye House (Brome Phenol Blue) Filtration

Commissioning a High‐Recovery Brackish Groundwater Desalination Plant in San Antonio

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