Article name Investigation of the Deformation of Filter Membranes Made from Fibrous Polymeric Materials in Devices for Clarification of Recycling Water of Mining Enterprises
Authors Gerasimov V.. ,
Nizhegorodtsev E.. Postgraduate Student,
Bibliographic description Gerasimov V. M., Nizhegorodtcev E. I. Investigation of the deformation of filter membranes made from fibrous polymeric materials in devices for clarification of recycling water of mining enterprises // Transbaikal State University Journal. 2023. Vol. 29, no. 3. P. 8–15. DOI: 10.2109/2227-9245-2023-29-3-8-15.
Category Earth and Environmental Sciences
DOI 502.36, 502.5
DOI 10.2109/2227-9245-2023-29-3-8-15
Article type Original article
Annotation Preserving the ecological cleanliness of the natural mountain-taiga territories of Siberia and the Far East during the development of mineral deposits remains an important task. Technological processes in mine workings are associated with the use of a large amount of clean water coming from mountain rivers, streams, underground sources. Significant volumes of water treatment are used in the open-cast mining of mineral deposits, especially at hydromechanized landfills for the extraction of alluvial gold. Polluted water, after passing through industrial devices for extracting gold, moves to settling tanks formed by dams. Large volumes of contaminated process water accumulate in the cascades of sedimentation tanks of mining enterprises, which must be treated. The gravitational method of sedimentation of solids from polluted water is the main and long-term one. Water clarification by mechanical method using mechanical filters is more efficient. There is a large class of filter materials used in mechanical filters. In recent years, nonwoven materials made of synthetic fibers made using needle-punched technology have been distinguished from this class. Under the action of the pressure of the treated circulating water, the membranes from fibrous materials in the filters are deformed; there is a danger of their rupture. The object of study is a filter membrane baffle of a round-shaped filter loaded with static pressure of a liquid. The research methods are as follows: experimental measurements of the maximum displacement of membrane points with significant stretching, theoretical calculations of displacements based on the laws of the theory of elasticity. The purpose of the work is the determination of limiting pressures of the liquid to be purified during the deformation of free round-shaped membranes made of fibrous materials. The following results are obtained: the limiting values of the liquid pressure have been determined, at which the strength of the membranes will be ensured without additional reinforcement with metal gratings. The characteristics of the ultimate pressure depend on the bulk density of the fibrous material, the height of the layer and the diameter of the filter. In cases where filters with a diameter of more than 20 cm are used, it is necessary to install additional supporting grids to support the membrane partition.
Key words ecology, mining enterprises,settling tanks, recycled water,clarification, filters, mechanicalmethod, pressure, filter membrane,limit state
Article information
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