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Title: DEVELOPMENT OF A WASTE WATER PURIFICATION SYSTEM USING BELITE SLUDGE
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DEVELOPMENT OF A WASTE WATER PURIFICATION SYSTEM USING BELITE SLUDGE
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1314-2704
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English
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21
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7.1
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• Prof. DSc. Oleksandr Trofymchuk, UKRAINE
• Prof. Dr. hab. oec. Baiba Rivza, LATVIA |
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The article is devoted to the problem of cleaning and disposal of waste from mining enterprises of the Russian Federation, using the example of the production of alumina (aluminum oxide).
The problem associated with the efficient use of industrial waste as sorbents for the purification of wastewater from mining enterprises is considered. A method is proposed that meets the requirements of the purification efficiency in terms of environmental and economic parameters. The substantiation and proof of the expediency of using belite sludge, which is a waste in the production of alumina, is given. The possibility of using belite sludge as sorbents for the purification of wastewater from mining enterprises has been investigated. The article presents the results of the main technological processes analysis at an enterprise for the production of alumina. The work of the alumina shop main sections is considered: the section for the charge preparation; batch sintering area; cake leaching section; section for aluminate solutions decomposition; aluminum hydroxide calcination area. The method of wastewater treatment using belite sludge is illustrated by an example. It is noted that the dicalcium silicate of the sludge, entering into ion exchange reactions with solutions of heavy metals ions, forms slightly soluble silicates of these metals, removing them from the solution and accumulating in the solid phase - in the composition of the sorbent. The results obtained during the experiment showed a high efficiency of using belite sludge as a sorbent. So, the efficiency of water purification from copper and nickel ions was 97%. |
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conference
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21st International Multidisciplinary Scientific GeoConference SGEM 2021
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21st International Multidisciplinary Scientific GeoConference SGEM 2021, 16 - 22 August, 2021
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Proceedings Paper
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STEF92 Technology
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SGEM International Multidisciplinary Scientific GeoConference
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SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Serbian Acad Sci & Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts & Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci
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231-238
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16 - 22 August, 2021
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website
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cdrom
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7883
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belite sludge; pollution; analysis; cleaning
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