Choice of sorbents for the pretreatment in the complex technology of phytoremediation

[摘要] There was analyzed the modern state and development of nature-like technologies for revitalization (recovery) of the environment in the territories of industrial enterprises. Phytoremediation is a technology of environment enhancement by means of the plants which belongs to such technologies of revitalization (recovery). This technology is environmentally sound and economically advantageous because of the low cost as it presupposes the use of just the solar energy. The aim of the work was the choice of sorbents for the complex technology of neutralization of storm and meltwater from the territories of the copper processing enterprises of the Southern Ural, as well as the wastewater of these enterprises. There are presented the experimental data on the study of sorption characteristics of the natural materials based on aluminosilicates (glauconite), hydromicas (expanded vermiculite), volcanic glass (expanded perlite), microporous sedimentary rocks (gaize), carbonaceous materials (wood chips, activated carbon AG-3, crushed anthracite) and the production wastes (ash from heat and power plants). It is determined that expanded perlite and expanded vermiculite, glauconite and gaize can be used for the pretreatment of wastewater from heavy-metal ions, first of all, copper, zinc, nickel, and iron. The effectiveness of pretreatment makes up 75-80 %, which allows reducing the toxic load on phytoremediation treatment plants biological ponds with the aquatic vegetation.

[发布机构] Department of Town Planning, Engineering Systems and Networks, South Ural State University, Lenin Avenue, 76, Chelyabinsk; 454080, Russia^1;National Research Irkutsk State Technical University, Lermontov Street, 83, Irkutsk; 664074, Russia^2

[学科分类] 土木及结构工程学

[关键词] Aquatic vegetation;Carbonaceous materials;Copper processing;Expanded vermiculite;Heat and power plants;Industrial enterprise;Natural materials;Sorption characteristics