Evaluation of the effectiveness of phytoextraction in the treatment of surface wastewater from residential areas from heavy metals

Currently, nature-like technologies are actively developing to use the potential of nature to solve environmental problems, including minimizing pollution and improving the health of water bodies. An example of such technology is bioengineering facilities that use bioaccumulative plants. Therefore, the selection of plants for modern bioengineering facilities is relevant and in demand. The purpose of this work was to study the bioaccumulative ability and evaluate the possibility of using perennial herbaceous plants oregano (Latin Origanum vulgare L.) and mint (Latin Mentha arvensis L.) in bioengineering facilities for heavy metal surface wastewater treatment in residential areas. As part of the study, experimental data were obtained that allow us to conclude that these plants can be used as bioaccumulators for the removal of heavy metals from wastewater in the form of mono-additives and in various compositions. The best bioaccumulation efficiency achieved is 100 % for chromium, copper and manganese, 96 % for iron, 59 % for aluminum and 50 % for zinc.