Seminario Grupo de Hidrologia Subterranea. Unidad Asociada UPC-CSIC
LURDES MARTINEZ LANDA
First calculation for a denitrification bioreactor in Kiruna mine, Sweden (NITREM Project: Nitrogen REMoval from waste rocks)
The source of most of nitrogen cycling at an iron mine site is the ammonium nitrate – based explosives used in the excavation of the mine. Waste rock, often contains adsorbed nitrogen compounds (ammonium and nitrate) as a residues from the detonation of the explosives. Once the waste rock is deposited on the ground surface, the percolation of rain and snow-melt through the deposit will leach the nitrogen compounds, potentially impacting local recipients.
NITREM’s bioreactor technology removes nitrogen (in the form of nitrate) from the waste rock leachate. A microbial process occurs in the bioreactor, where denitrifying bacteria reduce dissolved nitrate in the treated water to harmless nitrogen gas.
In this presentation we show the results of a conservative transport test to know travel times along bioreactors and, identifying the main processes that take into account during the transport processes. The results of this work will be the base of the future reactive transport models.
Jueves 23 de enero a las 12.15h en Departamento de Ingeniería Civil y Ambiental, Modulo D2-Aula CIHS, Planta Baja (UPC, Barcelona)