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The total hardness in aquifer often increased rapidly in urban area, and it may caused by the hydrogeochemistry. However it is not clear where the hydrogeochemistry happened in aquifer or in vadose zone. In this paper, mineral dissolution and cation exchange relevant to total hardness were simulated by the hydrogeochemical transport model in order to research the influences of the mineral dissolution...
The concentration variation of the nitrate ion in aquifer is influenced by not only the denitrification, but the recharge dilution, sorption of aquifer, etc, thus it is difficult to calculate the denitrification rate directly. In this paper, the methods of identifying the denitrification and estimation of denitrification rate constant were proposed using the field data in aquifer. Chloride ion, which...
Composting technology was used in the laboratory to simulate the remediation of the crude oil-contaminated soil collected from Jilin oil field. Consequently the contaminants removal paths and mechanism were discussed. The results showed that this method was effective in the remediation process. After 40 days, 45% crude oil was removed from the soil given the original oil content at 7.00 times 104...
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