National Mineral Resourses University (Russia):

Alekseeva Ye. A., Postgraduate, kafmetall@mail.ru

Brichkin V. N., Professor, Doctor of Engineering, kafmetall@mail.ru
Nikolayeva N. V., Lecturer, Ph. D. in Technical Sciences, opiopi@bk.ru

REC «Mekhanobr-tekhnika» (Russia):

Bilenko L. F., Senior Researcher, Doctor of Engineering

The article is dedicated to a method of mineral processing facilities' effluents and liquid waste purification — membrane filtration, intended to remove insoluble impurities. It is noted, that this method of purification increasingly becomes of current concern. The problems that hinder a wider application of membrane filtration technology are described; one of them being a decrease of filtration rate over a long operation period due to membrane fouling and phenomenon of polarization. The methods that are used in industrial practice with a view to decrease membrane fouling are described, among them are a correct choice of membrane type and feed material characteristics. The article presents the results of an experimental filtration study performed on a commercially used membrane material. The methods for membrane surface modification with titanium dioxide and a comparative estimate of highmolecular organic compounds solutions membrane filtration results are described. It is shown, that regardless of a chosen method of titanium dioxide application to membrane surface, membrane hydrophilicity and permeability are increased, and surface fouling is decreased.

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