Marina Mihajlović

Landfill design: need for improvement of water and soil protection requirements in EU Landfill Directive

This paper deals with environmental policy issues related to a landfill design. The final product of numerous waste treatments should be placed on a landfill. Before waste disposal, the ground should be protected by a mineral layer with properties required by the related regulation. In order to prevent environment pollution, EU adopted the Landfill Directive 1999/31/EC. The most important technical requirements related to the characteristics of the layer material are water permeability and thickness. The performed comparative national regulatory analysis raised the question of the need for more uniform elaboration of the directive requirements over the whole European Union area (including EU candidates). The choice of the material for the impermeable mineral layer, which should be made during landfill design, is a very important decision. Methods for the determination of the permeability coefficient were analysed, showing that the Directive should define hydraulic gradient as a physical quantity and define its value through measurement of the permeability coefficient. The paper analyses whether some parts of the Directive, as landfill design BAT and base for national legislative acts, require further elaboration in order to provide sufficient information about proper protection of soil and water. Using integrated approach, seven amendments on the directive annex I were suggested related to (a) the meaning of the term artificially established geological barrier, (b) layer thickness, (c) water permeability coefficient determination, (d) mineral layer lifecycle, (e) the meaning of the term sealing and (f) leaching control of material joints.

Ispitivanje mogućnosti uklanjanja sintetskih boja u mikroreaktorskim sistemima

Dyes are an important class of pollutants. Usage of synthetic dyes in the textile industry as a consequence has high amounts of colored wastewater. Before discharging, colored water has to be treated to achieve quality prescribed by law. Decolorization is a complex process which includes application of different chemical reagents which leads to additional water contamination. Our earlier works showed success in decolorization of wastewater contaminated with Reactive Orange 16. This paper deals with possibility of decolorization of wastewater, contaminated with Basic Yellow 28 and Acid Blue 111, in microreactor system using diluted solution of NaOCl.