HIGHLIGHTS OF THE EFFECTS PRODUCED ON ENVIRONMENTAL COMPONENTS IN AN ECOLOGICAL MUNICIPAL WASTE LANDFILL AREA

摘要

The present paper aims to investigate the quality level of water (underground and surface water) and soil environmental components in the area of an ecological landfill site meant for domestic waste. The investigations had in view evolution in time of some quality indicators which are typical for this kind of activity. The study implied sampling from different locations in accordance with a monitoring program, analysis of the samples in specialised laboratories and test reports. The results obtained during the monitoring period, 2003-2004, show the evolution of quality of some environmental components, in the proximity of the monitored area. The most important conclusions of our study are: for the soil samples - it was observed that its quality ranges within the normal value frame, in most cases. There have been registered also values exceeding the maximum accepted limits, those did not reach the alert limits; for underground water - we noticed that the values of the quality indicators 'organic matter expressed by COD-Cr and BOD_5', filterable residue and heavy metals, are changing in the same direction as the direction of the ground water flow; for surface water - the results obtained during the study made this water to cover the whole values range corresponding to quality classes Ⅰ-Ⅴ, as are defined by the Romanian legal provisions. For some indicators (COD-Mn, Ni, Cr, Zn, surfactants) it has been registered a stabilising tendency in a certain class. The downstream concentration values are superior to those in the upstream samples. The activity performed in that area adds to the contamination level of surface water.