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Possibility of Using the Both-Sided Irradiated Track-Etched Membrane with 0.2 Micron Pores for High-Color Natural Water Treating
- Authors: Molodkina L.M.1, Kudoyarov M.F.2, Patrova M.Y.2
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Affiliations:
- Peter the Great St.Petersburg Polytechnic University
- Ioffe Institute
- Issue: Vol 15, No 4 (2025)
- Pages: 269-282
- Section: Articles
- URL: https://journals.rcsi.science/2218-1172/article/view/355162
- DOI: https://doi.org/10.31857/S2218117225040047
- ID: 355162
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Abstract
The possibility of using a both-sided irradiated track-etched membrane of increased strength (20 µm thick) with pores of 0.2 µm in an individual water treatment module for purifying natural high-color water containing dissolved and highly dispersed humic impurities is substantiated. The methods of dynamic light scattering, spectrophotometry and spectroturbidimetry were used to analyze the dispersed state of humic compounds in the original natural water of high color, and also when introducing different doses of coagulant into it. The results of filtration of these waters in a module with a both-sided irradiated track-etched membrane (with pores of 0.2 µm) a nd a drainage of three-dimensional weave nylon were experimentally obtained and explained. Filtration of the original water resulted in rapid pore clogging (pore adsorption). When introducing a minimum dose of coagulant, effective water purification occurred due to the interaction of micellar and highly dispersed humic compounds with colloids of aluminum aquahydroxocomplex and the formation of aggregates on the fibers of the drainage and partially on the surface of the track-etched membrane, which was confirmed by microscopic analysis. A filtration regime for high-color natural water with backwash has been worked out. It has been shown that the track-etched membrane of increased strength can withstand at least seven process cycles with constant productivity and a high degree of water purification.
About the authors
L. M. Molodkina
Peter the Great St.Petersburg Polytechnic University
Email: molodkina.lm@mail.ru
Politekhnicheskaya st., 29, St. Petersburg, 195251, Russia
M. F. Kudoyarov
Ioffe Institute
Email: mkud@cycla.ioffe.ru
Politekhnicheskaya st., 26, St. Petersburg, 194021, Russia
M. Y. Patrova
Ioffe InstitutePolitekhnicheskaya st., 26, St. Petersburg, 194021, Russia
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