Elements of the complex evaluation of inorganic waste condition to use it as a source of raw material for production of man-made soils with application of staged criterial selection are introduced. The proposed elements allow identification of waste which can be recycled to man-made soils within the waste-forming area of a region. Complex technology of sludge treatment prior to disposal is developed. The proposed system allows for reduction of expenditures on purchasing natural soils for recovery of disturbed territories, as well as waste placement costs.

There are numerous methods of development of landfills: recreational, forestry-based, landscape and others. However, it is difficult to create forest plantations and park belts on the territories of landfills because of the specific ecological character of landfills. The construction and economic trend of landfills development is an alternative to popular methods. This paper introduces some fundamental principles proving the possibility of construction and economic development of landfill territories. It also presents groups of measures necessary for complex assessment of the bulk of solid municipal waste and their condition.

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The primary objective of the study was to test the possibility of cesium-137 transmutation into a stable barium isotope in contact with an aerobic syntrophic association (SA - a conglomerate of several thousands of different species of bacteria, protozoa and fungi living in symbiosis with each other) together with a set of macro- and microelements. The study was performed sequentially on two different SA. In the course of the work, the transmutation of cesium-137 into stable barium with the use of SA was not experimentally revealed, but the phenomenon of cesium-137 biosorption by both SA was detected to different degrees. In the course of the experiment the possibility of cesium-137 sorption by SA from the solution in the pH range of 7.7 - 8.6 was shown. In the process of the work, the time dependence of cesium-137 distribution in the liquid phase and the phase of SA was determined. The time dependence of the sorption capacity of the syntrophic association was revealed. With further continuation of the study, it is possible to obtain a mixture of SA capable of selectively extracting and concentrating prescribed radionuclides from the liquid phase.The result of this work may be the development of a technology for processing and conditioning low-level liquid radioactive waste (RW) by transferring the bulk of radioisotopes in the phase of SA (the so-called "nanosorbent of biological origin"), with multiple volume reduction.The cost of such a technology compared to existing technologies using synthetic sorbents should be several times less due to the cheapness of the SA and the reagents required for it. Besides, the new technology is more environmentally friendly. The process of biotechnologyoxidation of sulfide ores and concentrates based on the activity of chemolitotrophic bacteria that translate insoluble metal sulfides into soluble metal sulfates can serve as analogue for hardware design of RW purification technology using nanosorbent of biological origin.