Low waste technology for mine waters treatment using lime and aluminum coagulants

IF 0.5 Q4 CHEMISTRY, MULTIDISCIPLINARY Chemistry Journal of Moldova Pub Date : 2023-12-01 DOI:10.19261/cjm.2023.1063
I. Trus, V. Halysh, M. Tverdokhlib, M. Gomelya
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Abstract

In this paper the process of reagent desalination of mineralized mine waters was studied. The peculiarity of mine waters in many regions of Ukraine is that, along with hardness ions, they also contain sulphates in fairly high concentrations. Therefore, the task of desalination of mineralized waters consists in effective removal of sulphates along with softening of the solution. For effective purification of water from sulphates and hardness ions, 5/6 aluminum hydroxychloride (Al2(OH)5Cl) and sodium tetrahydroxoaluminate (Na[Al(OH)4]) were used during liming. A significant increase in efficiency of the treatment process was achieved when the solution was acidified with carbon dioxide after treatment with reagents. The directions of processing of the formed sediments as part of building materials have been determined. Complex processing of the generated waste in the process of water treatment allows creating a low-waste technology for the purification of mineralized water.
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使用石灰和铝混凝剂处理矿井水的低废物技术
本文对矿化矿井水的试剂脱盐工艺进行了研究。乌克兰许多地区矿井水的特点是,除硬度离子外,还含有相当高浓度的硫酸盐。因此,矿化水脱盐的任务是在软化溶液的同时有效去除硫酸盐。为了有效净化水中的硫酸盐和硬度离子,在石灰化过程中使用了 5/6 羟基盐酸铝 (Al2(OH)5Cl) 和四羟基铝酸钠 (Na[Al(OH)4])。在使用试剂处理后,用二氧化碳酸化溶液,处理过程的效率明显提高。确定了将形成的沉积物作为建筑材料的一部分进行处理的方向。对水处理过程中产生的废物进行复杂的处理,可以创造出一种低废物的矿化水净化技术。
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来源期刊
Chemistry Journal of Moldova
Chemistry Journal of Moldova CHEMISTRY, MULTIDISCIPLINARY-
CiteScore
0.90
自引率
20.00%
发文量
8
审稿时长
12 weeks
期刊介绍: "Chemistry Journal of Moldova. General, Industrial and Ecological Chemistry" seeks to publish experimental or theoretical research results of outstanding significance and timeliness in all fields of Chemistry, including Industrial and Ecological Chemistry. The main goal of this edition is strengthening the Chemical Society of Moldova, following development of research in Moldovan chemical institutions and promotion of their collaboration with international chemical community. Manuscripts are welcome from all countries.
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