Browsing by Subject "LNAPL"

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Access status: Open Access ,
Modelling of the system for cleaning up free oil products with the application of the MARS simulator
(2013) Knez, Janusz; Knez, Dariusz
Nowadays one of the most important problems in environmental protection is the pollution of groundwater by derivative products of oil. A common case of the infiltration of the oil derivative products to the ground water system is mainly connected with accidental oil spills in various types of environmental conditions. In this case we encounter numerous types of problems connected especially with the pollution in: 1) aeration zones, 2) saturation zones. The first step is a conceptual model for the proper recognition of the type and scale of the problem. After making a conceptual model it is possible to take a preliminary decision to recognize what sort of pollution is the source of the environmental problem. A study example describes modeling of free products of oil (LNAPL) floating on the groundwater table using MARS (Multiple Areal Remediation Simulator). The multiphase model was made on the basis of theoretical model concepts. In the modeling the recovery and migration of LNAPL are simulated, and the recoverable and residual spill volumes of derivate products of oil are estimated. Modeling indicates the best location of the remediation system and the pumping wells. Additionally, modelling can be applied to manage the remediation system for improving the efficiency and for decreasing the catchment area of piezometers and wells
Access status: Restricted ,
Zagrożenia ujęcia wód podziemnych w obszarze GZWP 425 substancjami chlorowcopochodnymi
(Data obrony: 2011-09-12) Jasińska, Iga
Wydział Geologii, Geofizyki i Ochrony Środowiska
Since the EU Water Framework Directive entered into the polish legal system, the new problem considering over normative presence of trichloroethylene and tetrachloroethylene in the groundwater environment has been noticed. This paper presents evaluation of risks related to groundwater exploited by the water intake in Nowa Dęba with regard to those particular compounds. The main problem concerning the pollution present at the indirect protection area of the water intake has been explored along with its description and layout. In addition, this paper determines the migration times of the compounds from the pollution centre to the receptor i.e. the water intake, it provides quality analysis with respect to the TCE and the PCE index, as well as assessment of the pollution impact on the groundwater quality, characteristic of water treatment practices together with the recommendations regarding correction works leading to environmental remediation of the polluted groundwater environment.