نتایج جستجو برای: groundwater chemistry
تعداد نتایج: 135748 فیلتر نتایج به سال:
Preservation of water quality, particularly in areas with inadequate water resources is considered as one of the principles of planning in integrated water management. In Kuhdasht, a region at the west of Iran, groundwater and spring water resources are the major contributors of drinking and irrigation water supply. The aim of this study was to determine the suitability and mapping of springs a...
Groundwater in Scotland is, for the most part, weakly to moderately mineralised and dominated by the Ca and HCO3 ions. The aquifer systems are almost entirely unconfined and most groundwater remains in contact with oxygen; some reducing groundwaters occur in deeper isolated cracks and joints within the many fractured bedrock aquifers such as Devonian sandstones. Groundwater depleted in oxygen i...
gol-e-gohar iron ore mine of sirjan in southern part of iran is a large open pit that operates below the groundwater table and during mining operation, dewatering is required to prevent operation processes from flooding. current operation is going on by digging wells in or out of the pit and pumping to prevent flooding. as a result of the former dewatering operation a vast deep cone of depressi...
Comment on The Role of Groundwater in Delaying Lake Acidification by M. P. Anderson and C. J. Bowser
Anderson and Bowser [1986], hereafter referred to as AB, presented a very interesting paper on the study of the role of groundwater in delaying lake acidification i Wisconsin. By considering the input/output of hydrogen ion with respect o the aquifer, including nonconservative transport through the use of the retardation factor, the effect of a delay in the arrival of acid to the lake is demons...
s, University of Dhaka, Bangladesh, 1999, p. 24. 60. Datta, D. K. and Subramanian, V., Distribution and fractionation of heavy metals in the surface sediments of the Ganges– Brahmaputra–Meghna river system in the Bengal basin. Environ. Geol., 1998, 36, 93–101. 61. Bhattacharya, P., Jacks, G., Jana, J., Sracek, A., Gustafsson, J. P. and Chatterjee, D., Geochemistry of the Holocene alluvial sedim...
The hydrogeochemical characteristics of groundwater, in an area where widespread contamination by nitrate (NO− 3 ) was anticipated, were studied using traditional geochemical investigation and multivariate statistical analysis. Widespread NO− 3 contamination as high as 67.2 mg/L as NO3–N was observed, and positively correlated with that for chemicals (Cl−, major cations) with surface origin. Pr...
During surface Fadlelmawla', K.J. Reddf, and G.F. Vance3 coal mining, rock material overlying the coal is redistsibuted with respect to its original stratigraphic position. Oxidation of the redistributed backfill material may release dissolved selenium (Se) to groundwater in backfill systems. This study was initiated to examine the chemistry of Se in the groundwater backfill environment. Both b...
In situ reactive barriers have been constructed by a variety of means and with a range of reactive materials. Zero valent iron reactive permeable barriers have been installed to remediate chlorinated solvent contaminated groundwater by abiotic degradation of the halogenated volatile organic compounds into harmless daughter products. Alternative reactive materials are used for precipitation, sor...
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