Ultrafiltration membrane pre-treatment benefits for reverse osmosis process in seawater desalting. Quantification in terms of capital investment cost and operating cost reduction

Lorain, Olivier; Hersant, Berengère; Persin, F.; Grasmick, A.; Brunard, Nathalie; Espenan, Jean-Michel

doi:10.1016/j.desal.2006.02.022

Cited by 68 publications

(25 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Low-pressure membrane pretreatment is increasingly implemented prior to the RO unit operation in seawater reverse osmosis (SWRO) plants, and also RO plants for the treatment of surface water and treated municipal effluent [7,18,44,[48][49][50][51]. Similar to surface-water treatment, the low solids content in these applications allows the low-pressure membranes to be operated in the dead-end filtration mode with intermittent backwashing.…”

Section: Pretreatment For Ro Desalination and Reclamationmentioning

confidence: 99%

The Performance and Fouling Control of Submerged Hollow Fiber (HF) Systems: A Review

et al. 2017

View full text Add to dashboard Cite

Abstract:The submerged membrane filtration concept is well-established for low-pressure microfiltration (MF) and ultrafiltration (UF) applications in the water industry, and has become a mainstream technology for surface-water treatment, pretreatment prior to reverse osmosis (RO), and membrane bioreactors (MBRs). Compared to submerged flat sheet (FS) membranes, submerged hollow fiber (HF) membranes are more common due to their advantages of higher packing density, the ability to induce movement by mechanisms such as bubbling, and the feasibility of backwashing. In view of the importance of submerged HF processes, this review aims to provide a comprehensive landscape of the current state-of-the-art systems, to serve as a guide for further improvements in submerged HF membranes and their applications. The topics covered include recent developments in submerged hollow fiber membrane systems, the challenges and developments in fouling-control methods, and treatment protocols for membrane permeability recovery. The highlighted research opportunities include optimizing the various means to manipulate the hydrodynamics for fouling mitigation, developing online monitoring devices, and extending the submerged HF concept beyond filtration.

show abstract

Section: Pretreatment For Ro Desalination and Reclamationmentioning

confidence: 99%

The Performance and Fouling Control of Submerged Hollow Fiber (HF) Systems: A Review

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Two papers noted that heavy fouling of the UF was observed without chlorination [104,117]. Only one plant explicitly reported a good UF performance without chlorine addition or any other chemicals to the feed water nor the backwash water [124].…”

Section: Integrated Membrane Systems (Ims)mentioning

confidence: 99%

“…Outside-in configurations often also utilize air during backwashing, which either passes through the fiber (air enhanced backwash) or along the outside of the fiber [air scour , 22]. Air scouring, with a minimum increase in energy demand, was found to improve the backwash efficiency and to reduce the filtrate water consumption [104].…”

Section: Integrated Membrane Systems (Ims)mentioning

confidence: 99%

Development of an Environmental Impact Assessment and Decision Support System for Seawater Desalination Plants

Lattemann¹

2010

View full text Add to dashboard Cite

“…A considerable number of reports can be found in the literature associated with conventional and membrane pretreatments (Rosberg, 1997;Vial et al, 2003;Halpern et al, 2005;Bonnelye et al, 2008;Voutchkov, 2010, van Hoof et al, 1999Brehant et al, 2002;Pearce et al, 2004;Kumar et al, 2006;Xu et al, 2007;Lorain et al, 2007;Bonnelye et al, 2008;Shon et al, 2008;Salinas Rodriguez et al, 2009). Nevertheless, dosages of biocides (often chlorinated substances) are the currently employed common strategy to prevent biofouling because biocides can kill nearly all microorganisms.…”

Section: Introductionmentioning

confidence: 99%

Study on the removal of biodegradable NOM from seawater using biofiltration

et al. 2013

View full text Add to dashboard Cite

Despite the low biodegradability of seawater NOM, problems associated with biofouling are common in facilities that handle seawater. In this work, a fixed-film aerobic biofilter is proposed as an effective unit for preventing biofouling in such facilities.A packed-bed biofilter with an EBCT = 6 -11 min was employed. The results demonstrated that the DOC is reduced by 6% and the BOD 7 is reduced up to 15%.The LC-OCD analysis revealed that biofiltration abates the LMW neutrals and biopolymer fractions by 33 and 17%, respectively. However, the fractionation with UF membrane showed that the biofiltration process is able to degrade the more biodegradable compounds that have molecular weights that are greater than 1 kDa and compounds with molecular weights of less than 1 kDa.After biofiltration, the biological activity measured in terms of ATP removal was reduced by 60%. Finally, a test to evaluate the biofilm formation capacity of a water sample revealed reductions of ~94% when comparing biofiltered and non-biofiltered seawater. Therefore, a fixed-film aerobic biofiltration process could be a useful treatment for the removal of biodegradable organic matter from seawater and for improving the water quality in terms of less biofilm formation capacity.* To whom correspondence should be addressed.

show abstract

Ultrafiltration membrane pre-treatment benefits for reverse osmosis process in seawater desalting. Quantification in terms of capital investment cost and operating cost reduction

Cited by 68 publications

References 1 publication

The Performance and Fouling Control of Submerged Hollow Fiber (HF) Systems: A Review

The Performance and Fouling Control of Submerged Hollow Fiber (HF) Systems: A Review

Development of an Environmental Impact Assessment and Decision Support System for Seawater Desalination Plants

Study on the removal of biodegradable NOM from seawater using biofiltration

Contact Info

Product

Resources

About