Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.chem.msu.ru/rus/journals/membranes/23/html/mb_231.pdf Дата изменения: Mon Feb 13 17:56:00 2006 Дата индексирования: Sat Dec 22 18:23:28 2007 Кодировка:

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, - («») . Na, Ca, Mg, Cl, SO4, HCO3. ( , ..), «» (, ). . «» (, ). ( , , ) , , . : , , , . The article presents experimental tools to determine rejection values of nanofiltration membranes OPMN-K for different ionic species depending on ionic composition of feed water. Processing of experimentally obtained curves using interpolation techniques enables us to calculate concentration of different ions in product water after treatment of feedwater, containing different amounts of ions Na, Ca, Mg, Cl, SO4, HCO3. During operation of nanofiltration units fouling occurs on membrane surface that reduce membrane rejection and results in penetration of different undesirable species (like fluoride, iron etc.) in product. The proposed method of experimental data treatment enables us to predict changes of product water composition with time depending on feed water chemical composition. Also the article offers a method of "optimization" of operational conditions when different feed water is treated. Optimum recovery value corresponds to minimum operational costs (antiscalant, cleaning, electricity) when quality drinking water is produced, with concentrations of different ionic not exceeding WHO required level. Keywords: nanofiltration, optimum operational conditions, rejection, prognosis.

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1. .. - // . . , 2001, 11, . 38-44. Pervov A.G. et al. RO and NF membrane systems for drinking water production and their maintenance techniques. // Desalination. 2000. V. 132, p. 315-321. . ., . ., . . , // . . 2002. 15, . 3 ­ 9. .., . ., .., .. / : // . . 2002. 10, . 26-29. Pervov A.G. Scale Formation Prognosis and Cleaning Schedules in RO Systems Operation. // Desalination. 1991. V. 83, p. 77.

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