By Jagath J. Kaluarachchi
This guide surveys very important remediation applied sciences utilized in the remediation of infected aquifers and gives an in depth research of every process. The options coated contain uncomplicated screening version and box program, pump-and-treat, bioremediation, steam flooding, and air sparging. The dialogue of either the advantages and obstacles of every process permits engineers to judge the applicability of the expertise in real eventualities. versions of multiphase circulation structures which are mostly saw in organic-contaminated aquifers are provided, in addition to prior modeling paintings to foretell circulate and shipping in multiphase structures and at present to be had modeling software program for remediation reasons
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Additional info for Groundwater contamination by organic pollutants : analysis and remediation
Two groups of chemicals have been used for this purpose: solvents (Lake 1989; Ali et al. 1995; Roy et al. 1995) and surfactants (Ellis et al. 1986; Rixey et al. 1991; Abdul et al. 1992; Pennell et al. 1993; Brown et al. 1994; Freeze et al. 1994; Adeel et al. 1995a). Petroleum engineers have studied the process of dissolution of residual oil phase into miscible solvents in some detail for enhanced oil recovery (Coats and Smith 1964; Lake 1989). Roy et al. (1995) proposed a kineticdissolution model that accounts for solubility enhancements by solvents.
A model developed by Forsyth (1993) and Panday et al. (1995) is a diagnostic tool for predicting efficiency of NAPL recovery using steam injection. This model is a finite-element code that assumes equilibrium partition of NAPL contaminants between the different phases. Falta et al. (1992a, 1992b) describe an integral finite-difference compositional model named STMVOC. They show that the efficiency of steam displacement depends on NAPL-saturated vapor pressure at the steam temperature and on NAPL residual saturation.
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Groundwater contamination by organic pollutants : analysis and remediation by Jagath J. Kaluarachchi