Environmental risk management of diffuse pollution of mining origin

K. Gruiz, E. Vaszita, V. Feigl, Z. Siki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents an Environmental Risk Management (ERM) approach employed in the Toka catchment, Gyöngyösoroszi, which is an abandoned Lead and Zinc sulphide ore mining site in Hungary. Mine closure and remediation works are currently in progress in the area. The ERM is focussed on both the point and diffuse pollution sources. The paper refers specifically to the management of diffuse sources. Risk assessment showed that the main risk is related to the toxic metal content, i.e. Arsenic (As), Cadmium (Cd), Lead (Pb) and Zinc (Zn), of the point and diffuse pollution sources in the studied area. Acidic leachate (pH 1 to 3) produced by bioleaching of the pyrite (FeS 2) containing mine waste mobilises toxic metals from the water eroded waste material, resulting in diffusely polluted areas. The risk reduction concept aims at reducing the quantity and toxic metal concentration of the runoff water by chemical and phytostabilisation of the diffuse pollution sources after remediation of the point sources. The risk reduction plan forecasts mitigation of the metal concentration in the Toka creek water to the targeted Quality Criteria. The combined chemical and phytostabilisation field experiments showed that chemical stabilisation itself is able to reduce Cd, Zn and water soluble Pb emission by 99,5%, 99,7% and 88%, respectively, such as to comply with the targeted Quality Criteria for sensitive water usage. Emission of As can be further decreased by chemical stabilisation with zero valent iron and mitigation of solid erosion.

Original languageEnglish
Title of host publicationConstruction for a Sustainable Environment - Proceedings of the International Conference of Construction for a Sustainable Environment
Publishershers
Pages219-228
Number of pages10
Publication statusPublished - 2010
Event2008 International Conference on Construction for a Sustainable Environment - Vilnius, Lithuania
Duration: Jul 1 2008Jul 4 2008

Other

Other2008 International Conference on Construction for a Sustainable Environment
CountryLithuania
CityVilnius
Period7/1/087/4/08

Fingerprint

Environmental management
Risk management
Pollution
Water
Metals
Remediation
Arsenic
Cadmium
Zinc
Stabilization
Lead
Bioleaching
Toxic materials
Zinc sulfide
Pyrites
Runoff
Catchments
Risk assessment
Ores
Erosion

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Environmental Engineering

Cite this

Gruiz, K., Vaszita, E., Feigl, V., & Siki, Z. (2010). Environmental risk management of diffuse pollution of mining origin. In Construction for a Sustainable Environment - Proceedings of the International Conference of Construction for a Sustainable Environment (pp. 219-228). shers.

Environmental risk management of diffuse pollution of mining origin. / Gruiz, K.; Vaszita, E.; Feigl, V.; Siki, Z.

Construction for a Sustainable Environment - Proceedings of the International Conference of Construction for a Sustainable Environment. shers, 2010. p. 219-228.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Gruiz, K, Vaszita, E, Feigl, V & Siki, Z 2010, Environmental risk management of diffuse pollution of mining origin. in Construction for a Sustainable Environment - Proceedings of the International Conference of Construction for a Sustainable Environment. shers, pp. 219-228, 2008 International Conference on Construction for a Sustainable Environment, Vilnius, Lithuania, 7/1/08.
Gruiz K, Vaszita E, Feigl V, Siki Z. Environmental risk management of diffuse pollution of mining origin. In Construction for a Sustainable Environment - Proceedings of the International Conference of Construction for a Sustainable Environment. shers. 2010. p. 219-228
Gruiz, K. ; Vaszita, E. ; Feigl, V. ; Siki, Z. / Environmental risk management of diffuse pollution of mining origin. Construction for a Sustainable Environment - Proceedings of the International Conference of Construction for a Sustainable Environment. shers, 2010. pp. 219-228
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