WITH REGARD TO THE QUESTION ABOUT THE USE OF ARTIFICIAL BARRIERS IN AREAS WITH MAN-MADE INFLUENCE

One of the ways to improve the environmental situation in various regions of the world has become the improvement of technologies for protection against hazardous pollution in soil, atmosphere, groundwater. The article is devoted to the analysis of the conceptual proposal within the framework of participation in the competition “Students reinventing cities. The promising methods of elimination and localization of environmental pollution using geochemical barriers are outlined. Examples of natural and artificial geochemical barriers are considered. Attention is drawn to the possibility of using anti-filtration screens as artificial barriers in areas with passive technogenic impact. The potential of using artificial barriers for the safe cultivation of plant crops at the former Payatas controlled waste disposal facility in Quezon City, Philippines is being identified. The importance of creating green spaces in the territory with limited opportunities for economic use is justified.

RESTORATION OF SOILS CONTAMINATED WITH RADIONUCLIDES BY PHYTOREDOMEDIATION METHOD

The possibility of soil restoration by means of phytotechnology and artificial geochemical barriers (GB) from contamination by radionuclides (RN) and toxic elements (TE) is methodologically substantiated. For this purpose, a number of artificial GBs were created at a special landfill within the framework of a model experiment. The process of formation and development of barriers, their parameters are investigated. Agrophytocenosis cultures were selected for optimal phytostabilization of soil conditions. The study of phytoextraction of TE and RN by agrophytocenosis cultures during one complete vegetation period was performed. Some selectivity of the investigated plants for extraction of different TEs and RNs from soils and material of barriers was revealed.

WAYS TO REDUCE THE RISK OF OCCURRENCE OF ENVIRONMENTAL ORIGIN EMERGENCY SITUATIONS IN AREAS OF ANTHROPOGENIC IMPACT AT COAL MINES

The description of the topic and problems of the object. The factors of environmental danger that can lead to emergency situations in areas of technogenic impact of mining enterprises in the Lviv-Volyn coal basin are analyzed. The purpose of the article is to justify the feasibility of the measures to minimize the spread of pollutants from mine dumps by the arrangement of geochemical barriers. The results of the research. The microelement composition of the dumps rocks of some mines in the coal basin have been examined. The rocks of mine waste heaps Chervonograd in compareness with the clark for clays and mudstone rocks of waste heaps concentrate Cobalt, Lead, Magnesium, Yitrium, Cuprum, Itterbium and Beryllium; Nadiia – Gallium, Manhan, Plumbum, Stanum, Itterbium, Cuprum; Stepova – Titanium and Tsirconium; Mezhyrichanska – Molybdenum and Plumbum. By the principal component methodparagenetic associations of trace elements and environmental parameters, which gave the opportunity to predict the ways and forms the main components of migration of trace element contamination are dedicated. In particular, for the rocks of mine waste heaps at Stepova such paragenetic associations are allocated: 1) the thickness of the bulk layer, the swiftness of slope, the ash content of rocks, the concentration of Sn, Cr, Zn and mudstones; thecontent of coal, pyrite, siderite, siltstone, Co, Ni, Mo, Cu, geomorphological characteristics, radioactivity of rocks; 2) the concentration of Pb, Ti, Cu, Sr, mudstone and rocks; 3) the contents of Mn and P. For the rocks of mine Mezhyrichanska are shown the association: 1) content of V, Y, Yb, Co, Ti, P, Cr, Ni, Be, Mn, Cu, Ba, Sn, Sc, Zn, Ga, Sr, Zr, ash content of rocks 2) the content of Mo, distribution of coal, not burnt rocks and pyrite. For the environment protection from pollution the most optimal methods are based on acceleration of the natural transformation of pollutants in the secure or their targeted concentrations in some limited areas with an area of the lithosphere, which are declared. To reduce the level of environmental risk and minimize the occurrence of emergency, on the territory of the Lviv-Volyn coal basin, the arrangement of artificial geochemical barriers on the way of pollutants from coal mine waste dumps to water have been proved for the first time.

METALS IN OILED PEAT (WESTERN SIBERIA)

The study of metals in oil-contaminated peat has double meaning. Firstly, it is diagnostic as convenient and simple The method of soil condition monitoring, and secondly, the ecological method to predict the state of the peat bog as a biocenosis element. Every pollutant elements in contaminated peat are divided into two bands. Some of them (Ti, V, Cr, Ni, Zr, Ba, Y, La, Ce, Nd) accumulate in the upper, bituminous layer of peat. Other elements (halogen chlorine, as well as metals: Ca, Mp, Zn, Cu, Sr), on the contrary, migrate deep into the peat layer with light fractions hydrocarbons. For capturing particularly moving Cu metals, Zn needs to be equipped with artificial geochemical barriers to prevent pollutants from entering groundwater and open ponds.