Vibratory shear enhanced process (VSEP) for treating brackish water reverse osmosis concentrate with high silica content

Subramani, A.K.; DeCarolis, James; Pearce, William; Jacangelo, Joseph G.

doi:10.1016/j.desal.2012.01.020

Cited by 50 publications

(18 citation statements)

References 26 publications

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“…The process appears especially effective for high-value, small-scale duties, including various dairy industry applications [6,[13][14][15][16][17][18][19][20][21][22][23][24][25], the treatment of yeast dispersions and bovine albumin solutions [4,5,26], pulp and paper industry applications [7,27] and specialist beverage process separations, such as the treatment of chicory juice [28][29][30] or sugar beet juice [31,32]. It has also found use in landfill leachate treatment [33,34], arsenic removal from drinking water [11,35], treatment of brine and brackish water [36][37][38], removal of natural organic matter [10,39,40], livestock wastewater treatment [8,41,42], dishwasher detergent wastewater and surfactant solution treatment [43,44], separation of microalgae [45,46] and Anammox sludge consolidation [47].…”

Section: Shear Impacts On Fluxmentioning

confidence: 98%

“…In the case of commercial VDF systems, the most prominent being the established V-Sep technology, E values within a relatively narrow range have been reported; 1.8 kWh m À 3 for skimmed milk and brackish water [53] cf. to 2.1 kWh m À 3 for brackish water desalination [38]. A recently commercialized RDF system for biological wastewater treatment applications [63] operates at the lowest rotation speeds on 100-140 RPM and provides the lowest E value (0.63 kWh m À 3 ) of those tabulated.…”

Section: Shear Impacts On Energy Demand Disc Membranesmentioning

confidence: 99%

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The impact of mechanical shear on membrane flux and energy demand

Zsirai

Qiblawey

A-Marri

et al. 2016

Journal of Membrane Science

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a b s t r a c tThe use of forced mechanical shear for both disc membranes (rotating and vibrating disc filtration, RDF and VDF respectively) and hollow fibres (vibrating HF membranes, VHFM) is reviewed. These systems have been extensively studied and, in the case of the disc membranes, have reached commercialisation and proven effective in achieving transmembrane pressure (TMP) control for various challenging feed waters.The effects of operating conditions, namely shear rate as enhanced by rotation and vibration speed and TMP, and feed water quality on the filtration flux and specific energy consumption are quantified as part of the review. A new relationship is revealed between the two empirical constants governing the classical relationship between membrane flux and shear rate, and a mathematical correlation proposed accordingly. A study of available information on energy reveals that operation at lower shear rates (i.e. rotation or vibration speeds) and more conservative fluxes leads to lower specific energy demands in kWh m À 3 permeate, albeit with a larger required membrane area.

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Section: Shear Impacts On Fluxmentioning

confidence: 98%

Section: Shear Impacts On Energy Demand Disc Membranesmentioning

confidence: 99%

The impact of mechanical shear on membrane flux and energy demand

Zsirai

Qiblawey

A-Marri

et al. 2016

Journal of Membrane Science

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“…Subramani et al [32] used a VSEP to further concentrate brackish water with high silica content, which had been previously treated with a spiral wound RO module. Permeate fluxes reached 100 Lh -1 m -2 with the VSEP as the high shear rate reduced colloidal silica deposition.…”

Section: Applications Of Vibrating Membranesmentioning

confidence: 99%

A Review of Applications of Rotating and Vibrating Membranes Systems: Advantages and Drawbacks

Jaffrin

Ding

2015

J. Memb. Separ. Tech.

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Dynamic filtration (DF) consists in creating a high membrane shear rate by disks rotating near a fixed membrane or by rotating or vibrating membranes. The shear rate can exceed 3 10 5 s-1 in some modules and significantly increases permeate flux and membrane selectivity as compared to cross flow (CF) devices. This paper describes several DF industrial modules and gives equations for calculating shear rates at rotating and vibrating membranes. It reviews 23 recent articles from 2008 to 2014, dealing with diverse applications: separation of microalgae from sea water by UF, clarification of rough beer, concentration of CaCO3 suspensions, treatment of dairy effluents and shipboard wastewaters, inulin extraction from chicory juice, treatment of oil field water, and separation of bovine albumin from yeast. In several applications, the maximum permeate flux at initial concentration ranged from 270 to 760 Lh-1 m-2. Modules with ceramic membranes rotating around several shafts inside a housing seem to be preferable to the concept of multi-compartments modules with metal disks rotating between fixed membranes. Since the cost of DF modules is higher than that of spiral wound ones, it is better to apply DF to "end of pipe treatment" after an initial concentration by CF.

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“…VSEP has been used to treat high solids (dissolved and particulate) wastewaters, including those from dairy (Akoum et al, 2004), livestock (Lee et al, 2004), pulping (Huuhilo et al, 2001), and landfill operations (Zouboulis and Petala, 2008). VSEP was also tested for treatment of desalination concentrate (Madole, 2005;Subramani et al, 2012). Lozier et al (2007) conducted a pilot testing using VSEP RO and NF membranes to treat reclaimed water RO concentrate with TDS concentration higher than 2800 mg/L.…”

Section: Desalination Concentrate Managementmentioning

confidence: 99%

Critical Review of Desalination Concentrate Management, Treatment and Beneficial Use

Cath

Robertson

et al. 2013

Environmental Engineering Science

149

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Desalination of seawater, brackish water, and reclaimed water is increasingly utilized worldwide to augment and diversify fresh water sources. The lack of economically and ecologically feasible concentrate management options, however, is a major barrier to widespread implementation of desalination, in particular at inland sites. This paper critically reviews strategies and technologies for concentrate management, including disposal, treatment, and beneficial use. Development of energy-efficient, cost-effective, and environmentally benign concentrate management systems is critical if desalination is to become a major part of a sustainable water future. This paper examines the limitations and advantages of a range of concentrate management tools, including emerging and novel technologies for minimization of concentrate volume, enhancement of water recovery, removal of organic contaminants, and recovery of valuable products and energy.

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Vibratory shear enhanced process (VSEP) for treating brackish water reverse osmosis concentrate with high silica content

Cited by 50 publications

References 26 publications

The impact of mechanical shear on membrane flux and energy demand

The impact of mechanical shear on membrane flux and energy demand

A Review of Applications of Rotating and Vibrating Membranes Systems: Advantages and Drawbacks

Critical Review of Desalination Concentrate Management, Treatment and Beneficial Use

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