UDC 628.3:66.081.6
DOI 10.35776/VST.2024.05.03
Tsabilev O. V.
VSEP membrane technology for glycol regeneration through the example of waste airport de-icing fluids (part 1)
Summary
The results of a series of long-term pilot tests of the VSEP technology for vibromembrane separation of waste contaminated solutions of glycol-containing fluids using nanofiltration membranes are presented. The tests were carried out on the basis of one of the research and production companies located in the Central Federal District of Russia. A mixture of waste contaminated solutions of de-icing fluids collected at large airports during the cold season of the year was used as research liquid. He studies have shown positive results, so the technology can be recommended for industrial application. The separation process is stable, and the quality of the effluent meets the most stringent requirements. A feature of the technology under study is its ease of use, the almost complete elimination of chemicals and the compactness of the equipment, which makes it possible to design local systems for the purification of solutions of glycol-containing liquids.
Key words
nanofiltration membrane , nanofiltration , pilot tests , membrane separation , VSEP technology , concentration polarization
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UDC 628.3:66.081.6
DOI 10.35776/VST.2024.06.04
Tsabilev O. V.
VSEP membrane technology for glycol regeneration through the example of waste airport de-icing fluids (part 2)
Summary
The results of a series of long-term pilot tests of the VSEP technology for vibromembrane separation of waste contaminated solutions of glycol-containing fluids using nanofiltration membranes are presented. The tests were carried out on the basis of one of the research and production companies located in the Central Federal District of Russia. A mixture of waste contaminated solutions of de-icing fluids collected at large airports during the cold season of the year was used as research liquid. He studies have shown positive results, so the technology can be recommended for industrial application. The separation process is stable, and the quality of the effluent meets the most stringent requirements. A feature of the technology under study is its ease of use, the almost complete elimination of chemicals and the compactness of the equipment, which makes it possible to design local systems for the purification of solutions of glycol-containing liquids.
Key words
nanofiltration membrane , nanofiltration , pilot tests , membrane separation , VSEP technology , concentration polarization
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UDC 628.161:66.081.63
DOI 10.35776/VST.2023.12.03
Tsabilev O. V., Uglov Sergei, Vasil’chenko Vladimir, Kopytin Iurii
Pilot tests of VSEP technology to minimize the amount
of reverse osmosis concentrate
Summary
The results of pilot tests of the VSEP vibromembrane liquid separation technology for concentrating wastewater with high salinity from an industrial reverse osmosis plant are presented. VSEP technology provides for achieving high filtrate yields from salty wastewater eliminating pre-treatment and the use of antiscalants. As a result of membrane separation, demineralized water (filtrate) is obtained, that can be reused in the production cycle, as well as a highly concentrated solution of salts (concentrate), that also includes insoluble sludge. The tests were carried out at an industrial facility using a pilot plant of the VSEP Auto-LP series using reverse osmosis membranes. Procedures for choosing the brand of a polymer membrane and determining the optimal operating pressure were carried out. The experimental data on wastewater concentration cycles are presented to determine the conditions for the stability of the separation process and the duration of the installation flushing interval. The test results provide for designing an industrial wastewater return system for reuse.
Key words
reverse osmosis , pilot tests , membrane separation , VSEP technology , concentration polarization , reverse osmosis membrane
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DOI 10.35776/VST.2022.12.06
UDC 621.395.623.3
Strelkov A. K., Tsabilev O. V., Gridneva M. A.
Vibromembrane filtration technology: eliminating the negative effect of concentration polarization (international experience)
Summary
Представлена уникальная технология мембранного разделения жидкостей VSEP, которая позволяет минимизировать негативное влияние концентрационной поляризации. Отличие технологии заключается в вибрации поверхности мембран. В результате достигается ряд ключевых преимуществ технологии. Все это существенно раздвигает границы использования мембранных методов и делает возможным применение мембран там, где ранее это было невозможно. Кроме того, процесс разделения различных жидкостей не требует использования антискалянтов, а рабочие значения удельной производительности установок и выхода фильтрата значительно превышают таковые в традиционных системах мембранного разделения. Технология уже находит массовое применение в мировой инженерной практике для самых различных отраслей промышленности.
Key words
membranes , nanofiltration , membrane filtration , VSEP technology , concentration polarization
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