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Title:Vsebnosti potencialno strupenih elementov v sedimentih in vodah reke Meže in njenih pritokov, ki odvodnjavajo odlagališča rudarskih odpadkov
Authors:ID Gosar, Mateja (Author)
ID Bavec, Špela (Author)
ID Miler, Miloš (Author)
ID Gaberšek, Martin (Author)
Files:.pdf PDF - Presentation file, download (3,23 MB)
MD5: 91B51EC014C9E3ADE16998E5E6C24EDB
 
Language:Slovenian
Typology:1.01 - Original Scientific Article
Organization:Logo GeoZS - Geological Survey of Slovenia
Abstract:Predstavljeni so rezultati spremljanja vsebnosti potencialno strupenih elementov (PSE) v sedimentih (v letih 2013, 2017, 2020) in vodah (v letih 2017, 2020) reke Meže ter njenih pritokov, ki odvodnjavajo odlagališča rudarskih odpadkov. Skupno 13 vzorčnih mest je vzpostavljenih v vzorčni shemi, ki omogoča dolgoročno opazovanje vpliva odlagališč rudarskih odpadkov. V sedimentih so zaradi vplivov več kot 300-letnega delovanja rudarsko-predelovalne industrije močno povečane vsebnosti PSE, predvsem Pb, Zn, Cd, Mo in As, ki s časom precej nihajo. Razlike v vsebnostih na istih lokacijah v različnih letih so najbolj izrazite v pritokih reke Meže, ki drenirajo odlagališča rudarskih odpadkov. Na vsebnosti imajo pomemben vpliv hidrološki pogoji, saj so ob višjem vodostaju in višjem pretoku vsebnosti PSE večje. Vodna erozija odlagališč ima pomemben vpliv na dotok onesnaženega materiala v vodotoke. V nasprotju s pritoki, v zgornjem toku reke Meže nismo opazili večjega vpliva višjega vodostaja in pretoka na vsebnosti PSE v sedimentih. Dolvodno od Žerjava so nihanja vsebnosti med posameznimi leti oz. različnimi hidrološkimi pogoji tudi v Meži večja. Predstavljeni rezultati kažejo, da so v sedimentih reke Meže in njenih pritokov vsebnosti Pb, Zn, Cd, Mo in As zelo velike ter krepko presegajo zakonsko določeno kritično vrednost za tla. V površinski vodi so vsebnosti PSE lokalno povečane in se s časom bistveno ne spreminjajo. Glede na primerjavo z zakonodajnimi smernicami, so v obravnavanih vodah lokalno presežene koncentracije Pb, Cd in Zn. Ocenjujemo, da je dinamika obremenjenosti sedimentov reke Meže s PSE vzdolž krajev Črna na Koroškem, Žerjav in Mežica zelo kompleksna. Poleg odlagališč rudarskih odpadkov na vsebnosti PSE v sedimentih in vodah vplivajo tudi razpršeni viri v okolju, kot so onesnažena tla in poplavne ravnice ter njihova različna stopnja onesnaženosti, saj je okolje obremenjeno zaradi dolgoletnih rudarskih in talilniških dejavnosti. Dodaten okoljski vpliv ima morda tudi sedanja industrijska dejavnost v dolini reke Meže.
Keywords:rudarjenje, rudarski odpadki, odlagališča odpadkov, potencialno strupeni elementi, rečni sedimenti, monitoring, onesnaženje okolja
Publication status:Published
Publication version:Version of Record
Publication date:29.03.2024
Publisher:Geološki zavod Slovenije
Year of publishing:2024
Number of pages:str. 41-61
Numbering:vol. 67, no. 1
PID:20.500.12556/DiRROS-19196 New window
UDC:504.5
ISSN on article:0016-7789
DOI:10.5474/geologija.2024.003 New window
COBISS.SI-ID:194205187 New window
Publication date in DiRROS:09.07.2024
Views:349
Downloads:169
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Record is a part of a journal

Title:Geologija
Shortened title:Geologija
Publisher:Geološki zavod Slovenije
ISSN:0016-7789
COBISS.SI-ID:5636866 New window

Document is financed by a project

Funder:Other - Other funder or multiple funders
Funding programme:Ministrstvo za naravne vire in prostor
Project number:2550 – 20 – 340122
Name:Spremljanje zaprtih objektov za ravnanje z odpadki iz rudarskih in drugih dejavnosti izkoriščanja mineralnih surovin (2020 – 2021)
Funder:ARIS - Slovenian Research and Innovation Agency
Project number:P1-0020-2020
Name:Podzemne vode in geokemija
Funder:ARIS - Slovenian Research and Innovation Agency
Project number:P1-0025-2018
Name:Mineralne surovine
Funder:ARIS - Slovenian Research and Innovation Agency
Project number:J1-1713-2019
Name:Dinamika in snovni tok potencialno strupenih elementov (PSE) v urbanem okolju

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

Language:English
Title:Contents of potentially toxic elements in sediments and waters of the Meža river and its tributaries draining mine waste deposits
Abstract:The results of the monitoring of the contents of potentially toxic elements (PTE) in sediments (2013, 2017, 2020) and waters (2017, 2020) of the Meža River and its tributaries, which drain mining waste deposits, are presented. A total of 13 sample sites were established in a sample scheme that enables long-term observation of the impact of mining waste deposits. In the sediments, the content of PTE, especially Pb, Zn, Cd, Mo and As, is greatly elevated and fluctuates with time. The study area is affected by more than 300 years of mining and ore processing industry. The differences in the contents in various years are most pronounced in the Meža River tributaries, which drain the mining waste dumps. Hydrological conditions have a significant influence on the contents in sediments, as PTE content increases with higher water level and higher water flow. Water erosion of mining waste dumps has a significant impact on the discharge of contaminated material into watercourses. In contrast, in the upper part of the Meža River, we did not observe strong influence of higher water level on the content of PTE in the sediments. Fluctuations in the content between individual years and fluctuations between various hydrological conditions are higher again in the middle part of the the Meža river, downstream from Žerjav. The presented results demonstrate that the contents of Pb, Zn, Cd, Mo and As in the sediments of the Meža River and its tributaries are very high and that they by far exceed the legislative critical value for the soil. PTE contents in the surface water are elevated in some locations and do not change significantly over time. The local concentrations of Pb, Cd and Zn exceed the legislative guidelines. We estimate that the dynamics of the sediment load in the Meža River along the towns of Črna na Koroškem, Žerjav and Mežica is very complex. In addition to mining waste deposits, the content of PTE in sediments and waters is also affected by scattered sources in the environment, such as contaminated soil and floodplains and their varying degrees of pollution, as the environment has been burdened by long-term mining, ore processing and smelting activities. Current industrial activity may also have an additional environmental impact.


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