Objective
The proposed study addresses assessment of hydrous contaminant transport rates and routes in fractured formations exemplified by chalk with low matrix permeability.
Further, design of monitoring techniques to detect and locate contaminant transport in preferential flow routes, and evaluation of remediation strategies for contaminated groundwater in such formations is to be undertaken. These aspects are to be investigated jointly by the partners in a well exposed contaminated field site in an arid area, where unlined storage ponds filled with industrial wastewater are underlain by fractured chalk. Analytical, experimental and novel model results thus obtained are to be included in a comparative evaluation of their climate and regional dependance, based mainly on analogue historic data and results from fractured chalk under humid conditions. hereby the general applicability of the results and suggestions is to be evaluated.
(1) Establishing a common site, for the field work of the partners, at an especially well suited location, with severe known industrial wastewater contamination of a fractured chalk formation in an arid setting. For all analytical and modelling purposes this site is to be the common frame of the partners. The results from here are to be tested for applicability in humid regions and climates, through existing data and key supplementary investigations.
(2) Characterisation of the important geologic (fracture distribution and geometry, pore-size distribution, matrix and fracture-filling mineralogy), hydrologic and hydraulic (flux spatial distribution, preferential flowpaths within fractures, fracture conductance) features controlling contaminant transport rates in fractured chalk.
(3) Description of the hydrochemical processes and parametres (matrix diffusion, sorption, desorption and retardation at the fracture walls comprised of chalk, coated chalk and fracture fill) influencing the spreading of various contaminants in fracured chalk.
(4) Investigation of the impact of bacteria on the processes of fixation and degradation of contaminants.
(5) Evaluation of the proportional importance of the analysed aspects based on a novel modelling approach, which accounts for all the contributions of the studied effects to transport of contaminants in fractured groundwater aquifers. This is to be a running evaluation enabeling early reevaluation of the nessecary number of individual types of analyses needed.
(6) Development of a protocol of monitoring techniques, based on the study, that provide the most accurate description of the contaminant plumes (in particular in fractured chalk), while being costeffective.
(7) Assessment of the possibilities of site remediation in fractured chalk, identification of needed data for remediation, and suggestion of preferred remediation strategies.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- engineering and technology environmental engineering water treatment processes wastewater treatment processes
- natural sciences biological sciences microbiology bacteriology
- natural sciences earth and related environmental sciences geology mineralogy
- natural sciences mathematics pure mathematics geometry
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Coordinator
2400 KOEPENHAGEN
Denmark
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