Presence in leachate waters very broad range of contaminants (both organic and mineral), causes, that the assessment of leachate composition is limited to indicators chosen by the researcher or imposed by regulations specifying the scope of monitoring. Comparing different objects can be facilitated by the Leachate Pollution Index (the LPI), which is calculated based on parameters, which have been acknowledged to have potentially the biggest impact on environment.The paper presents a method of determining the value of the LPI, also in the case where the results of some of the required physiochemical analyses are missing. On the basis of the information available in literature as well as the author's own research values obtained for selected national landfills have been compared. Using Maślice municipal landfill site in Wrocław as a case study, changes in the level of the LPI linked with age and changing ways of using the landfill site have been analyzed.The range of values of the indicator calculated for national landfill sites revealed extensive variation, however not diverging significantly from their Euro-pean counterparts. In all of the cases the leachate waters were characterizing high levels of chemical demand for oxygen (COD(Cr)), concentrations of ammonia ni-trogen and to some extent ...
Traditional phosphorus fertilization of crops in Poland has a high environmental risk associated with the ease of transfer of into surface waters, as well as the high cost of production of such fertilizers. This imposes the need to find new solutions to fertilizer, which on one hand would be a lower risk to the environment, on the other hand would be equally accessible source of phosphorus for plants. One of them may be the use of phosphate - sulfur fertilizers (FS), characterized by a gradual release digestible phosphates (V), and hence the lower the migration to the water. The addition of sulfur increasing the availability of phosphorus from phosphate rock, is also a source of sulfur as a nutrient for plants. The aim of the study was to determine the effect of elemental sulfur to the ground rock phosphate on the phosphates (V) and sulfate (VI) ions permeation to waters. In vegetation experiments tested how use of phosphate - sulfur fertilizers affects the movement of phosphates (V) and sulfate (VI) ions to the water. Performed two two-year pot experiment, which tested effect 6 types of phosphate - sulfur fertilizer, differing in degree of milling phosphate (F1 and F2) and the ...
