Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników
Powiadomienia systemowe
  • Sesja wygasła!

Znaleziono wyników: 2

Liczba wyników na stronie
first rewind previous Strona / 1 next fast forward last
Wyniki wyszukiwania
help Sortuj według:

help Ogranicz wyniki do:
first rewind previous Strona / 1 next fast forward last
EN
Chemical components in groundwater from mine drainage or used in geothermal installations are a potential source of valuable minerals. At the Polish Geological Institute - National Research Institute, a study was carried out to identify the content of elements in mine waters, wells exploiting natural gas and oil as well as geothermal and therapeutic waters in Poland. The aim of the research was to recognize the concentration of potentially useful minerals in groundwater and the possibility of their recovery. It was the first project that focused on the recovery of elements from groundwater on a national scale in Poland. For this purpose, 67 sites were selected, in which 75 water samples were taken and the content of65 chemical components was determined. Then, the amount of minerals that could be recovered from mine waters and geothermal brines was calculated based on the amount of water pumped in each facility. The calculations involved the approximate efficiency and working time of the recovery installation. As a result of this research, it was found that the mine waters and geothermal brines in Poland contain resources of valuable elements in very different amounts. In more than half of the examined sites, the estimated resources of minerals are present in amounts that are not prospective. However, in 29 sites, mine waters and geothermal brines contain elevated concentrations of several elements, including - B, Br, I, K, Li, Mg and Mn. If they were successfully recovered, they could represent a potential additional income for the mining and geothermal industries. Dębieńsko Desalination Plant of mine waters in Upper Silesia is the most promising potential source of recovery of minerals from mine waters, where the total resources of minerals to be recovered from concentrated brine have been estimated as the highest. Rudna Copper Mine in Lower Silesia is in second place, with one of the highest resources and the largest amount of minerals to be recovered from groundwater. Other sites are: the SOLINO Salt Mine, “Olza” mine water collector, mine waters pumped from abandoned coal mines in the Upper Silesia (in Zabrze, Siemianowice Śląskie, Czeladź, Gliwice), and plants producing geothermal energy in Stargard, Pyrzyce and Bańska. Total amount of mineral resources that can be recovered from waters pumped from the most promising sites is over72 000 tonnes annually. Taking into account both the ecological aspect and the potential economic benefits of recovering minerals from mine waters and geothermal brines, it is necessary to continue the studies on the recovery of minerals from highly mineralized waters in Poland.
PL
W celu oceny wpływu działalności człowieka na wody podziemne, analizie poddano skład chemiczny wód podziemnych występujących na obszarach o różnorodnych sposobach użytkowania terenu. Do badań wykorzystano wyniki analiz fizyczno-chemicznych wód podziemnych wykonywanych w ramach monitoringu krajowego w latach 1995–2017, w podziale na różne stopnie izolacji opróbowanych poziomów wodonośnych. Najbardziej są zanieczyszczone wody pochodzące z otworów monitoringowych zlokalizowanych na obszarach przemysłowych w poziomach o swobodnym zwierciadle wody. W wodach pobranych z punktów monitoringowych zlokalizowanych na obszarach wiejskich oraz na obszarach występowania gruntów ornych stwierdzono wysokie zawartości azotanów i siarczanów, a na obszarach miejskich podwyższone są także stężenia fosforanów i cynku. Najmniej zanieczyszczone są wody z punktów monitoringowych umiejscowionych na terenach zieleni miejskiej. Chemizm wód podziemnych w analizowanych punktach monitoringowych zależy zarówno od czynników naturalnych, jak i charakteru użytkowania terenu. Podwyższone stężenia NO3 –, HPO4 – lub SO4 2– są ewidentnie wynikiem działalności człowieka, podczas gdy podwyższone stężenia Na, Cl i NH4 + mogą być zarówno pochodzenia antropogenicznego, jak i skutkiem naturalnych procesów hydrogeochemicznych. Stężenia Ca i Mg w badanych wodach podziemnych są głównie efektem procesów naturalnych.
EN
The chemical quality of groundwater beneath the different types of land use areas was examined to evaluate the effects of human activities on groundwater. The study of the results of groundwater quality tests conducted as part of the Polish National Monitoring in 1995–2017 was performed in order to evaluate the effects of human activities on groundwater in the aquifers of different levels of isolation. The most polluted waters are those collected at monitoring points located within unconfined aquifers of industrial areas. The waters taken from monitoring points located in rural areas and arable lands show a high level of nitrates and sulphates. In urban areas, also phosphate and zinc concentrations are elevated. The least polluted waters were collected from points located in urban green areas. The groundwater chemistry in analyzed monitoring points depends on both natural factors and the nature of land use. Elevated concentrations of NO3 –, HPO4 – or SO4 2– are evidently the result of human activity, while the increased levels of Na, Cl and NH4 + come from both anthropogenic sources and natural processes. Ca and Mg concentrations in the studied waters are mainly the result of natural processes.
first rewind previous Strona / 1 next fast forward last
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.