The article presents analysis of some complex problems connected with old closed landfills in Poland, illustrated by some examples of municipal and industrial sites. These landfills have been usually protected without any assessment of filtrating abilities of the layers below the bottom and the layers directly surrounding wastes, or with no analysis of the soil physical and chemical properties, microstructure, and so on. Technical solutions tending to maximum possible stoppage of impurities in the inactive landfills are proposed. Such solutions allow to reduce influence of impurities on geological environment, namely they must be separated from the environment by special walls (screens against filtration) made as cavity walls. The known protection methods should be improved all the time, and some waste materials should remain in the disposal sites to the moment of application of new remediation techniques. Co-disposal of hazardous and municipal wastes need a special analysis. Very important is monitoring of changes in chemical composition of wastes mass during bioremediation.
"New Approach To Inactive Landfills Containing Wastes Of Mercury And Other Heavy Metals,"
Proceedings of the Annual International Conference on Soils, Sediments, Water and Energy:
Vol. 12, Article 10.
Available at: http://scholarworks.umass.edu/soilsproceedings/vol12/iss1/10