Remains of mining in the territory of villages´ Červenica and Zlatá Baňa in the mountain range of Slanské vrchy

This article is devoted to the territory that is recondite for mining activities. It is situated in a north part of the mountain range of Slanské vrchy. There are villages that were known as mining villages in the past. The mining activities for gold, silver and mercury had only a local economical importance, beside of the output or production of opal. The output of opal on this territory was world noted, in the past. The aim of this article is to remit at some historical facts about former mines and to draw our attention to some attempts for building up, the educational and touristic path on this territory

The evaluation of mercury contamination of sediments of the river basin Slaná and the water reservoir of Ružín I

The region central Spiš is mostly contaminated by heavy metals, mainly mercury. This teritory is well-known for its mining and metallurgical activities for several centuries. This article deals with the sediments quality from the two localities of the central Spiš region (the river basin Slaná and the water reservoir of Ružín I) in connection with the mercury contamination in the last period. The monitoring of the sediments quality as well as the water quality is important for thier further use

Concentration of NOX in the vicinity of the power plants Vojany EVO 1 and EVO 2

The paper presents a calculation of the maximal concentration of nitrogen oxides in the vicinity of point sources (main chimneys) of power plants Vojany EVO1 and EVO2. The wind velocity u10,M (7), at which the concentration on a given place in the surrounding of the pollution source attains a maximal value, is calculated. The relation (8) for a calculation of the place with the maximal concentration for a given class of air stability (Table 1 and 2) and for a given wind velocity is derived. According to equation (3) and Table 3, a thermal capacity of EVO1 and EVO2 is calculated, considering a flat country in the vicinity of the sources (x3 = 0 in relation (1)). Subsequently, it is also considered that the wind direction has the direction joining the source and the place of concentration calculation (x2 = 0). The calculations of concentration are performed for the 5th class of air stability. As to this class, favourable conditions for the pollutants dispersion are there. Thus, the maximum concentration is in a relatively small distance from the source with a sharp concentration maximum. As to other classes of the air stability (Table 1 and 2), the maximum concentration is located in larger distances from the source, i.e. about 10 km, as it is considered in Table 4 and 5. The theoretical calculation of NOX concentration in the vicinity of the sources, EVO1 and EVO2, shows (Table 4 and 5) that it does not exceed the allowable limit of 150 µg.m-3

Mining development the Spiš-Gemer ore-location

This contribution deals with one of the oldiest mine plants in Czechoslovakia the Smolník mine. This mine is known from the 13th century by producing copper, iron, silver and gold. It was closed in 90-ies of the 20-th century. In the present time, the Smolník mine is a source of water pollution

Contamination of Water-Work Reservoir Ruín I Environment by Heavy Metals in the Last Period.

This paper gives information on heavy metals occurrence in water of main tributaries, in water of brooks which inflows in waterwork reservoir along it shore line, in sediment loads from wateworkr reservoir Ruin I and in the ambient air of the reservoir. The samples of water from main tributaries were taken in autumn 2002 and from 20 brooks in autumn 2003. The samples of sediment loads were taken from 10 localities of reservoir and the samples of atmosphere from 4 localities along their shore the line, in years 2002-2003. The heavy metals content was determined by the atomic absorption spectroscopy method

The heavy metals in the sediment load of Small water reservoir Sigord

This article presents results of research concentrated on the content of selected elements, mostly heavy metals, in samples of water and sediment load from the Small water reservoir (SWR) Sigord, which was erected on the Delňa brook. During this research a sampling of water and stream deposits from 2 baffle walls of the Delňa brook above SWR Sigord and atmosphere from one locality of the mentioned reservoir was made. The drainage basin of Delňa brook is located at the territory of Zlatá Baňa, which is well known from the historic times until these days by its mining and raw material processing activities. The wastes generated during such activities and mining waters too are sources of selected elements or heavy metals, which penetrate into the water of Delňa and consequently into the stream deposits and the sediment load. The control sampling of water, sediment load and atmosphere are necessary in future as well

Vplyv kompozitného sorbentu na obsah vybraných prvkov v násosnách nádrže Vodného diela "Ružín I"

10010

Perspektíva využitia nánosov z nádrží vodných diel v povodí Hnilca pre poľnohospodárstvo a hodnotenie ich rizika pre životné prostredie

19519

Forgotten constructions erected for mining and salt-works activities in Zlatá Baňa

Village Zlatá Baňa is known for the mining activities for gold, silver, mercury and antimony in the past. This article is devoted notto mining activities but to forgotten 2 dams, which were erected on the Delňa brook. The first was constructed above Zlatá Baňa fromwood in 1691 and does not exist presently. The second one was erected beneath Zlatá Baňa between 1802 – 1807 from stone and cementmortar. It exists up to this day but it is not working. The mentioned dams enabled to create water reservoirs. The first one enabled the water transport of wood trunksfrom Žlatá Baňa to Soľná Baňa in 1691 for a mining output of a salt-stone (or stone-salt). In the years 1807-1917, water from the second reservoir enabled the water transport of wood by a wooden flume 18,9 km long from Zlatá Baňa to the salt-works in Solivar. The mentioned dams and their water reservoirs enabled the high economical effectivity of the mining output of salt and salt-production of the salt-works in Solivar

Methods of industrial waste water cleaning

The issue of „acid mine water“ (or AMD) is well known in the world for some centuries. In the Eastern Slovakia, the most acid surface water occurs in the area of the old mine Smolník, which is closed and submerged for 15 years. The submitted contribution deals with the sulphateelimination at this locality. Recently, several methods of the sulphate-elimination from the mine water are applied. The best-known methods are the biological and physical-chemical oness and the chemical precipitation. The method described in this contribution deals with the chemical precipitation by polyaluminium chloride and calcium hydrate. By appliying of this method, very interesting results were obtained. The amount of SO42- anions decreased to almost zero-value, using optimal doses of the chemical reagents