Water and water purification technologies

Scientific and technical news

MAIN POSSIBILITIES OF IMPROVEMENT OF HUMIC SUBSTANCES REMOVAL BY ULTRAFILTRATION

Т. Mitchenko, О. Svietlieisha

National Technical University of Ukraine “KPI”, Kiev, Ukraine

e – mail: aves_@rambler.ru

Ultrafiltration becomes more popular in drinking and wastewater treatment today. It used individually or as a pretreatment for reverse osmosis. Practical experience has shown a high efficiency of suspended particles and microbial contamination removal with ultrafiltration method, in contrast to the removal of organic substances that is usually below the stated. It is an essential problem for water treatment of rivers of Dnieper basin. Their main characteristic and problem as well is high content of humic substances (HS) (5-16 mgO2/l). Water with high level of HS is unfit for using in manufacturing processes and for drinking purposes without any treatment. It has shown that membrane surface modification and combination of physical-chemical methods with ultrafiltration can increase the efficacy of HS removal and reduce their negative impact on the membrane surface.

Keywords: coagulation, oxidation, ultrafiltration, humic compounds, modification of membrane surface.

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17.02.2012 at 1:35 pm

PILOT TEST OF HUMIC COMPOUNDS REMOVAL FROM DNIPER RIVER WATER BY COAGULATION – ULTRAFILTRATION

O. Svietlieisha1, T. Mitchenko1, I. Astrelin1, A. Lazarev1, P. Stender2, P. Kozlov2

1 – National technical university of Ukraine “KPI”, Kiev;  2- Co Ltd SPA “Ecosoft”, Irpin, Ukraine

e-mail: aves_@rambler.ru

Combined coagulation – ultrafiltration technology of Dniper river water treatment was investigated in this study. High humic compounds content, that typical for Dniper river water, can essentially decrease efficiency of water pretreatment as by traditional technologies so by an ultrafiltration. Performed investigations showed that in-line dosing of coagulant before ultrafiltration stage can increase efficiency of color and permanganate oxidation removal.

Key words: coagulation, ultrafiltration, humic compounds, aluminium oxychloride.

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21.08.2011 at 7:21 pm