Volume X |

Types and Sources of Underground Water Table Pollution in Sânmihaiu German Settlement (Timiş County) – Preliminary Analysis

Abstract: The drinking water of German Sânmihaiu, located at about 15 km South-Western from Timişoara city, is polluted. There are some small farms in the settlement, which pollute the underground water with sulphates, nitrites and ammonia. Waste thermal waters resulted as open discharges from the local swimming pool are added. 22 water samples constituted the basis of this study, accompanied by questionnaires. The chemical analysis of the test was performed in the laboratory. The study also uses digital cartography methods, which outlined the spatial disparities regarding the pollution of each underground water table. The concentration of ammonia and nitrites has considerably decreased as compared to the last two decades, when intensive agriculture at CAP level was based on chemical fertilizers. Yet, the pollution from unmonitored sources continues to represent a problem.

Volume IX |

The Subsidence Caused by the Waste-Coal Self-Ignition Process in the Anina Town (Romania). Preliminary Study

Abstract: Uncontrolled subterranean coal fires, mainly developed through the process of self-ignition, represent a challenging hazard of local dimension, but with global-scale distribution. One important effect of this spontaneous ignition process is the surface subsidence. Porosity and particle size fraction of the coal particles in the deposit, water and oxygen play the main role. Anina sterile heaps present a non-typical situation of waste-coal self-ignition. The fine coal is found in the sterile heaps distributed all over the actual urban area, being covered by human activities and residential buildings, so that, the human risk is present in several forms.