Recovery optimization of RO concentrate from desert wells

Ning, Robert Y.; Tarquin, Anthony J.; Trzcinski, Mathew C.; Patwardhan, Gautam

doi:10.1016/j.desal.2006.06.006

Cited by 57 publications

(24 citation statements)

References 6 publications

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“…Several investigations on high recovery membrane systems have been carried out [8][9][10][11][12][13][14][15][16][17][18][19]. Rahardianto et al [8] reached a total recovery of 98% in a system composed of a primary RO, after which the concentrate was treated with accelerated precipitation softening, followed by a secondary RO for treatment of the concentrate.…”

Section: Introductionmentioning

confidence: 99%

Silica and silicate precipitation as limiting factors in high-recovery reverse osmosis operations

Cob

Beaupin

Hofs

et al. 2012

Journal of Membrane Science

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Section: Introductionmentioning

confidence: 99%

Silica and silicate precipitation as limiting factors in high-recovery reverse osmosis operations

Cob

Beaupin

Hofs

et al. 2012

Journal of Membrane Science

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“…The saturation of barium sulfate, calcium fluoride, and calcium carbonate is typically controlled by the use of an antiscalant [27,28]. But, silica saturation is difficult to control when the concentration exceeds 200 mg/L in the concentrate stream [23,29]. The presence of suspended solids, oil, and grease in the feed water can severely hinder the performance of NF and RO process due to fouling.…”

Section: Feed Water Qualitymentioning

confidence: 98%

Recovery optimization of membrane processes for treatment of produced water with high silica content

Subramani

Schlicher

Long

et al. 2011

Desalination and Water Treatment

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2011) Recovery optimization of membrane processes for treatment of produced water with high silica content, Desalination and Water Treatment,[297][298][299][300][301][302][303][304][305][306][307][308][309] To link to this article: http://dx. A B S T R A C TDisc tube (DT) and spiral wound (SW) configurations of nanofiltration (NF) and reverse osmosis (RO) processes were tested at pilot-scale using a two-pass configuration to treat produced water obtained from natural gas wells. First pass NF membranes were used to remove divalent cations from produced water. Permeate from the first pass NF membranes were used as feed to second pass RO membranes after increasing the pH to 10.0 to enhance silica solubility. To reduce the fouling potential on NF and RO membranes dissolved air floatation (DAF), ceramic ultrafiltration (UF), MYCELX cartridges, and organoclay filters were tested as pretreatment alternatives. Pretreatment processes were effective for turbidity and oil and grease removal but were not efficient in retaining organic matter, primarily protein-like and polysaccharide-like material, which eventually fouled the first pass NF membranes. The second pass RO membranes were scaled predominantly by silica. The overall feed water recovery of the two-pass NF-RO system was limited to less than 70%. Although the application of a two-pass configuration met the discharge limits for most of the contaminants in produced water, a more stringent pretreatment process for selective removal of organics and silica is essential to operate the membrane systems at recoveries greater than 85%. If treated appropriately, produced water can be employed as a true water resource to augment existing surface water streams and creeks.

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“…Ning et al [88] investigated an intermediate lime softening treatment for the concentrates (TDS = 7,465 mg/L) generated in a primary RO system operated at 85%-90% water recovery. That precipitation treatment successfully removed SiO 2 and BaSO 4 from primary RO brine.…”

Section: Scale Minimization Technologies: 'High Ph Precipitation Treamentioning

confidence: 99%

A review of strategies for RO brine minimization in inland desalination plants

Rioyo¹,

Aravinthan²,

Bundschuh³

et al. 2017

Desalination and Water Treatment

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a b s t r ac tWater scarcity in many inland areas is increasing the demand for new groundwater desalination plants. Co-produced coal seam gas (CSG) water (or coal bed methane as known in the USA), which is mostly brackish, is extracted in huge quantities during CSG production and requires advanced treatment. Reverse osmosis (RO) is the leading technology applied in municipal desalination and for treating CSG water in Australia and in some locations in the USA. Antiscalants are often dosed during RO pretreatment to prevent membrane scaling. Recovery rates are limited by antiscalant efficacy and large volumes of brine are frequently disposed of in evaporation ponds. The search for environmentally friendly methods for RO brine minimization is considered as a key global issue. In this paper, differences between inland and seawater desalination are highlighted. The existing technologies for RO brine minimization and zero liquid discharge (ZLD) for inland desalination are reviewed. The efficacy and application of two scaling reduction technologies for RO brine minimization: (i) acid/antiscalant addition and (ii) 'high pH precipitation treatment' are compared. Finally, more complex ZLD and volume reduction systems, such as the high efficiency RO (HERO™) and the SAL-PROC™, are analyzed as well.

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Recovery optimization of RO concentrate from desert wells

Cited by 57 publications

References 6 publications

Silica and silicate precipitation as limiting factors in high-recovery reverse osmosis operations

Silica and silicate precipitation as limiting factors in high-recovery reverse osmosis operations

Recovery optimization of membrane processes for treatment of produced water with high silica content

A review of strategies for RO brine minimization in inland desalination plants

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