Demineralizace důlních vod hnědouhelných lokalit pomocí elektrolýzy.

Abstract

This dissertation deals with the application of electrodialysis membrane process in treatment of mine water from brown coal locations Vršany, ČSA, Emeran and Březno in the Czech Republic. The introductory parts are dedicated to the issues of mining waters and their classification, including brief characteristics of the selected areas and mine water treatment plant Vršany, ČSA, Emeran and Březno, from which the examined samples come from. Next, it describes the legislative requirements for the discharge to surface waters and current treatment technology. Membrane processes, discussed in the following chapter, focus mainly on electrodialysis (ED) and ion exchange membranes. It gives the description of ED principles, properties of ion-exchange membranes, membrane fouling, mass transport and water transport through the membrane, involvement of ED in treatment processes, practice application of ED and performance characteristics of ED as a degree of desalination and balance. The experimental part of the dissertation contains results of the implemented laboratory experiments on possible demineralization of the mine water by means of ED in batch tests from samples of all the locations and feed-and-bleed test from samples of location Vršany. The research focuses on obtaining maximum demineralization of mine water and reducing the concentrate (wastes) emerging from this treatment. The quality of the treated water was assessed according to the legislative limits of surface water, the possibility of their use for water management purposes and legislative limits for drinking water.