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  • Groundwater contamination  (1)
  • Key words Hydrogeology  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Hydrogeology of limited aquifer in a granitic terrain (1999)
    Springer
    Environmental geology 37 (1999), S. 90-95 
    Details
    ISSN: 1432-0495
    Schlagwort(e): Key words Hydrogeology ; Hard rock aquifers ; Aquifer parameters
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie
    Notizen: Abstract  Detailed hydrogeological studies in a granitic micro-watershed have been carried out to determine the extent, behavior, and characteristics of the aquifer. The study includes analysis of lithologs, drill time log, pumping tests, and slug tests. Realistic field conditions have been taken into account for characterizing the aquifer system. Slug tests were carried out to estimate aquifer parameters at the wells which could not sustain pumping.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s002540050364
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Mass transport modelling for assessement of groundwater contamination around Mathura oil refinery, Mathura, Uttar Pradesh, India (2000)
    Springer
    Environmental geology 39 (2000), S. 1138-1146 
    Details
    ISSN: 1432-0495
    Schlagwort(e): Key words Chloride and sulphate migration ; Oil rafinery ; Mass transport model ; Groundwater contamination ; Layered aquifer India
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie
    Notizen: Abstract Mathura oil refinery was commissioned during 1977 and effluent storage ponds were constructed at the same time. These storage ponds receive wastewater from the refinery at a rate of 10000 m3/day. After treatment, waste water is discharged through a 3-km pipeline to a stream leading to the Yamuna river. The groundwater-monitoring as well as water-quality monitoring was carried at 24 observation wells in the refinery site during 1997. The water quality measurements indicated total dissolved chloride and sulphate concentration of native groundwater as 400 mg/l, whereas elevated levels up to 600 mg/l were found at the wells close to polishing ponds. Thus combined transport of chloride and sulphate was simulated in the mass transport model. A three-dimensional flow, pathlines and mass transport model of the aquifer system were constructed to analyze the impact of seepage from polishing ponds contaminating the groundwater regime. The permeability of aquifer varies between 1.5–2.5 m/day. The porosity of formation was assumed as 0.2. The constant head and constant concentration boundaries were assigned to the nodes representing effluent storage ponds. Longitudinal dispersivity of 100 m, horizontal transverse dispersivity of 10 m and vertical transverse dispersivity of 0.01 m were assumed. The mass transport model was calibrated for 20 years by comparing total dissolved chloride and sulphate concentrations from 1997. The model predictions indicate further migration of contaminants on the east of effluent ponds in future.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s002549900070
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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