Efektivnost zahlazování následků hornické činnosti po chemické těžbě uranu.

Abstract

The dissertation addresses the consequences of remediation after chemical leaching of uranium in the Czech Republic in Stráž pod Ralskem. Review the various methods of remediation, the remediation scenarios particularly in terms of their effectiveness because of the possibility of financing are limited. Mining of uranium underground in-situ leaching with sulfuric acid have been carried out in the periods 1967 – 1996. During the extraction have been injected into the ground more then 4 million tons of sulfuric acid and other chemicals, wich were contaminated with approximately 380 million m3 of groundwater. If remediation is not implemented, there would be time to disperse contamination and negative impact on the quality of drinking water supplies to large areas and in large volume. Remediation is performed by state enterprise DIAMO. Now, contaminated water are pumped from underground to the surface, where there is destruction of contaminants or one produced economically useful products and future planned use and immobilization of contaminants in-situ. Groundwater remediation after chemical leaching of uranium the uranium deposits in Stráž pod Ralskem is technically and financially very time consuming and scope it unique in the world. End of remediation is the year 2042 with the anticipated financial requirements about 30 billion CZK.