ZASTOSOWANIE PROCESU ULTRAFILTRACJI DO PODCZYSZCZANIA WÓD OPADOWYCH

The aim of the study was to assess the applicability of the ultrafiltration process for the treatment of selected rainwater from the roof of a detached house in the city of Wodzislaw Slaski. The membrane process was carried out in a pressure chamber produced by Osmonics, an American company, type GH-100-400 with a capacity of 350 cm³ equipped with a magnetic stirrer providing dead-end conditions. Four flat ultrafiltration membranes with PT, PW, V3, BN symbols and of different membrane material and MWCO were used. During the pressure filtration, the relationship between the volumetric permeate flux and the time of the process was determined. The transport properties of the applied membranes for deionized water, membrane thickness and the angle of wettability were also determined. The effectiveness of the process was also evaluated based on the change in organic pollutants load, i.e. COD, TOC, TC, IC, colour and absorbance in UV₂₅₄. Based on the obtained test results, it was found that the best membrane in terms of transport properties was the PES membrane (cut-off 10 kDa). However, in the case of this membrane, the phenomenon of fouling was the most intense. It was also obtained high removal of organic impurities and rainwater colour.