A new solution for the Caspian Sea desalination: low-pressure membranes

Первов, А. Г.; Andrianov, A. P.; Efremov, R. V.; Desyatov, A. V.; Baranov, A. E.

doi:10.1016/s0011-9164(03)00420-x

Cited by 40 publications

(21 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To achieve the needed removal of boron, Pervov et al [79] suggested a technological scheme including clarification, acid and antiscalant dosage as a pretreatment, and double-stage RO with caustic dosing into the first stage product.…”

Section: Nf As Pretreatment For Desalinationmentioning

confidence: 99%

A comprehensive review of nanofiltration membranes:Treatment, pretreatment, modelling, and atomic force microscopy

et al. 2004

View full text Add to dashboard Cite

Section: Nf As Pretreatment For Desalinationmentioning

confidence: 99%

A comprehensive review of nanofiltration membranes:Treatment, pretreatment, modelling, and atomic force microscopy

et al. 2004

View full text Add to dashboard Cite

“…In fact, better fouling removal from UF membrane at increased BW d has been reported in the scientific literature for very variable filtration scenarios in terms of feed water characteristics and UF configurations [1,2,5,6,[16][17][18], including other types of membrane systems such as microfiltration [9], ceramic membranes [25] and membrane bioreactors [26].…”

Section: Effect Of Bw Duration (Bw D )mentioning

confidence: 94%

“…First, these studies treat different types of water: wastewater [2,5,6,11,12,16], seawater [1,17,18] and surface water [3,10], each with different fouling behaviour potential under a given BW regime. For instance, it has been reported that a high salt concentration in the seawater might influence the interaction forces between membrane and foulants [1].…”

Section: Introductionmentioning

confidence: 99%

“…For instance, it has been reported that a high salt concentration in the seawater might influence the interaction forces between membrane and foulants [1]. Second, the configuration of UF modules in these st8]udies is very variable: flat-sheet [10], spiral wound [17], pressurized (inside-out) [5,6,12,18] and submerged (outside-in) [1,10] hollow fibre membrane systems, also affecting the propensity to fouling [1,16,19]. Furthermore, most of them are focused on the evolution of the membrane resistance and fouling rates [2,3,5,6,16] and only a few quantify the reversible and irreversible fouling after each backwash cycle [1].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Reversibility of fouling on ultrafiltration membrane by backwashing and chemical cleaning: differences in organic fractions behaviour

Ferrer

Lefèvre

Prats

et al. 2016

Desalination and Water Treatment

View full text Add to dashboard Cite

Membrane fouling is an inherent phenomenon in UF membrane processes, making it necessary to periodically perform backwashes (BW) and chemical "cleanings in place" (CIP) to restore the initial permeability of the membrane. The objective of this study was 1) to explore systematically the effect of distinct BW-related variables (BW transmembrane pressure, duration, frequency, composition) on the reversibility of UF membrane fouling and on the permeate quality (in terms of total organic carbon, turbidity and UV absorbance) over successive filtration/BW cycles; and 2) to identify which organic fractions were most removed by the membrane and, of these, which were most detached after BW, alkaline and oxidant CIP and acid CIP episodes. For this purpose, a bench-scale outside-in hollow fibre module operated under dead-end filtration mode at constant transmembrane pressure and treating settled water from a drinking water treatment plant was employed. Dissolved organic carbon fractionation was performed by high performance size exclusion chromatography (HPSEC). Results showed that in general the more intensive a BW was (in terms of high transmembrane pressure, shortened frequency and prolonged duration) the more effective it was in removing fouling from the membrane. Concerning the composition of the water used for the BW, the addition of NaClO led to maximum fouling reversibility, closely followed by the combination of NaOH+NaClO, while citric acid and NaOH contributed little compared to water alone.However, results also showed that irreversible fouling was never completely avoided whatever the BW regime applied, leading to a gradual increase of the total resistance over time. Larger

show abstract

“…Chemical precipitation may be used for elimination of boron but it requires relatively high levels of pH (pH > 9), that causes high saltness of solution and generates significant amounts of sludge [3][4][5][6][7]. Besides, high costs of chemical substances, as well as the costs of sludge utilization and disposal make this process of boron elimination inadvisable in many cases [8,9].…”

Section: Introductionmentioning

confidence: 99%

Chemical treatment of wastewater from flue gas desulphurisation

Pasiecznik

Szczepaniak

2017

E3S Web Conf.

View full text Add to dashboard Cite

Abstract. The article presents results of laboratory tests of removing boron and arsenium from non-ideal solutions using double-layered magnesium/aluminium hydroxides (Mg/Al Double-Layered Hydroxide -DLH) produced with nitrate-chloride method. In research, wastewater from an installation for flue gas desulfurization was examined. Double-layered hydroxides are perfect absorbents for anionic compounds. The research proved high effectiveness of preparation with reference to arsenium, as well as confirmed the effect of presence of sulfatic and arsenate ions on the effectiveness of boron removal. On the basis of research on absorption kinetics a theoretical dose of DLH/NO3-Cl/M preparation was calculated and compared with a dose that ensures emimination of boron below the limit standarized by the national regulations. Application of double-layered magnesium/aluminium hydroxides for boron elimination from industrial wastewater requires significantly higher doses of preparation than those calculated in model investigations. It is due to the priority of removal of multivalent ions, such as sulfatic, arsenate or phosphate ions, by DLH/NO3-Cl/M.

show abstract

A new solution for the Caspian Sea desalination: low-pressure membranes

Cited by 40 publications

References 1 publication

A comprehensive review of nanofiltration membranes:Treatment, pretreatment, modelling, and atomic force microscopy

A comprehensive review of nanofiltration membranes:Treatment, pretreatment, modelling, and atomic force microscopy

Reversibility of fouling on ultrafiltration membrane by backwashing and chemical cleaning: differences in organic fractions behaviour

Chemical treatment of wastewater from flue gas desulphurisation

Contact Info

Product

Resources

About