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The problem of reducing the negative environmental impact of soda ash production wastes using the ammonia method is relevant for all countries with such production. Therefore, the objective of this work was to summarize and analyze the experience of Russian researchers and foreign scientists in using existing technologies and methods of using soda ash production waste. The secondary use of this waste solves several problems at once. On the one hand, it reduces the negative impact of accumulated waste on the components of the natural environment by reducing the stored volumes, and on the other hand, involving this material in the production cycle allows obtaining additional material and energy resources. For this purpose it is necessary to use the best available technologies. The production of soda ash results in the formation of liquid sludge, a distillery liquid, which is accumulated in special settling tanks called white seas. These accumulators cover an area of several square kilometers and are located near the soda industry. Therefore, waste disposal is a very important environmental task. At present, the Russian Federation and the world have experience in using these wastes: for reclamation of disturbed lands, as additives for obtaining various construction materials and as a soil base for backfilling the territory. Despite a wide range of applications for soda production wastes, the problem of their utilization remains urgent. Even with the existing volume of soda production, the volumes of distillery liquid are quite high, and implementation of utilization methods requires certain costs. Active recycling of waste at the present stage is constrained by the lack of mass processing technologies, development of which is possible only on the basis of knowledge about composition and properties of waste, its spatial and temporal changes, nature and orientation of processes leading to changes in composition and properties. [ABSTRACT FROM AUTHOR]

Trends in waste generation show an increase in the volumes of waste produced worldwide. Currently, municipal solid waste management is one of the primary tasks for environmental authorities in Poland due to industrialization and economic growth, growing income, and an increase in quantity and variation in the types of waste generated. Conventional treatments of municipal solid waste using landfilling have become more difficult and expensive in Poland due to land deficiency and new environmental policies. The objectives of this study are to investigate existing municipal solid waste management practices, reviews the challenges, barriers and opportunities associated with improving waste management in Poland. The operations of selective and refuse collection, sorting, recycling, landfilling and incineration of packaging waste were considered. [ABSTRACT FROM AUTHOR]