The level of aggression of invasive species in some cases is so high that natural plant communities undergo significant changes in vertical and horizontal structure of phytocoenosis. Often, the species composition of the ecosystem can also greatly decrease. For active introduction into historically established plant communities, a new species must have a special norm of genotype response, which in one or more parameters exceeds that of native species. This gives it an advantage that allows it to expand its range and dominate. The phenomenon with the species Heracleum sosnowskyi Manden is also different in that the plant causes dangerous diseases in humans. It is no coincidence that this weed has been controlled by the government in recent years.

The urgency of the problem of biodiversity conservation has grown significantly at present. In addition to the increasing anthropogenic impact on natural ecosystems, there is also a threat of changes in biocenoses due to the spread of invasive plant and animal species. The human factor also plays a significant role in this process. For example, the species Heracleum sosnowskyi Manden was used as an agricultural crop in the last century. Unfortunately, the specific properties of the plant made people refuse to use it as such. All varieties obtained by breeders were excluded from the State Register. However, the plasticity and biological aggressiveness of the species allowed it to successfully occupy an ecological niche in various biogeocenoses. Since the plant poses a real danger to human health, an intensive search is underway for ways to combat this poisonous invasive weed. The authors have developed a unique method of controlling plants Heracleum sosnowskyi M., effective and safe for humans and the environment.

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The article is devoted to the sorption treatment of industrial effluents, which contain heavy metal ions (HMI) by the natural clay mineral kaolinite - an activated adsorbent. The main sources of HMI receipts are revealed - industrial and agricultural production. The influence of heavy metals on human health is considered. The results of studies of wastewater treatment using filtration through an activated adsorbent of Ni2+, Cu2+, Zn2+, Cr6+, ions, mixed waste are presented. Dolomite and magnetite were chosen as activators. The optimal composition of activators has been determined. When using the proposed method of wastewater treatment, separation into streams of chromium-containing and acid-base wastewater is excluded. The high quality of purified water with an activated adsorbent makes it possible to use it in closed water use systems. The cheapness and availability of natural clay adsorbents, high performance properties, allow us to offer it as an industrial sorbent.