80,000h operational experience and performance analysis of a brackish water reverse osmosis desalination plant. Assessment of membrane replacement cost

Ruiz-García, A.; Ruiz-Saavedra, E.

doi:10.1016/j.desal.2015.07.022

Cited by 52 publications

(25 citation statements)

References 29 publications

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“…Ruiz-Garcia et al [163] compared the difference of cost between when the specific energy consumption increases due to chronological effects such as fouling with and without replacing the RO membrane elements from 80,000 hours operation. The costs of electrical energy, chemical cleaning and membrane replacement were considered.…”

Section: Ro Element Performance and Other Cost Driversmentioning

confidence: 99%

How RO membrane permeability and other performance factors affect process cost and energy use: A review

2019

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Reverse osmosis (RO) technology has progressed steadily over the last few decades. Those gains were achieved through improvements in both RO membrane element performance and energy recovery technologies. However, some recent literature indicates that RO membrane water permeability is approaching performance limits imposed by transport processes and thermodynamic constraints. This paper reviews how RO membrane element performance affects the cost of RO processes, especially the specific energy consumption. RO membrane performance encompasses water permeability, salt permeability, and other some characteristics of the RO element. This paper considers not only conventional RO processes, but also the recently proposed closed-circuit RO and batch RO processes. Even if the membrane water permeability increases, little additional effect is found when the membrane water permeability exceeds around 3 LMH/bar for seawater RO and 8 LMH/bar for brackish water RO in conventional single-stage RO. Increasing membrane water permeability has the potential to decrease membrane surface area and associated costs. A major limitation of most existing literature is that performance is evaluation on in terms of the initial operating conditions. Chronological changes, such as result from fouling, must also be considered to accurately validate how membrane element performance affects RO cost.

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Section: Ro Element Performance and Other Cost Driversmentioning

confidence: 99%

How RO membrane permeability and other performance factors affect process cost and energy use: A review

2019

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“…The normalization of the RO operation data was carried out using the ASTM method [38]. The principal equations integrated with this technique were [39]:…”

Section: Normalization Methodmentioning

confidence: 99%

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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“…By way of comparison, pumping units were assumed to perform at 100%. The first case was the plant studied by the authors in previous works [29,30], whose permeate and feedwater inorganic composition is shown in Table 3. This water is characterized by high levels of bicarbonate.…”

Section: Plants Descriptionmentioning

confidence: 99%

“…Furthermore, it offers diverse optimum solutions in a direct manner, depending on the necessities and constraints established. In order to validate the program, experimental data compiled from 80,000 operating hours of a BWRO desalination plant was used to set the water and ionic permeability coefficients for the membrane element BW30-400 [29].…”

Section: Introductionmentioning

confidence: 99%

A computational tool for designing BWRO systems with spiral wound modules

Ruiz-García

Nuez

2018

Desalination

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80,000h operational experience and performance analysis of a brackish water reverse osmosis desalination plant. Assessment of membrane replacement cost

Cited by 52 publications

References 29 publications

How RO membrane permeability and other performance factors affect process cost and energy use: A review

How RO membrane permeability and other performance factors affect process cost and energy use: A review

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

A computational tool for designing BWRO systems with spiral wound modules

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