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According to the principle of reflection of electromagnetic waves, the authors use the open-ended coaxial probe method which operate the high frequency electromagnetic wave (200 MHz–8.5 GHz) to measure the dielectric constant of sand saturated with water and LNAPL (light non-aqueous phase liquid) under the laboratory conditions. The experimental results show the real part of the complex permittivity...
In this paper, three types of sandy soil were contaminated with landfill leachate, salt solution or diesel oil respectively in laboratory, then, they were detected with Ground penetrating radar(GPR). On the basis of experiment results, the measured GPR image character of different contaminated soil was analyzed and the relationship formula between dielectric constant of contaminated soil measured...
Based on the management of Hurongxi Highway construction in Hubei Province, and in accordance with the complicated topography, geology, hydrology, climate, as well as the extremely difficult constructive circumstances, such as the narrow constructive site, the shortage of water and scarcity of material supply in mountainous areas, the thesis proposes a management concept on harmonious mutual development...
We have conducted GPR survey at a site which was partly excavated and filled with highly contaminated soils. The electrical properties and TPH concentration of the core samples were measured in the laboratory. It is verified that an inverse relation between TPH concentration and relative dielectric constant, and a direct proportional correlation between TPH concentration and electrical resistivity...
The environmental impact post assessment is a further extension and improvement on the basis of environmental impact assessment. There is an important role to improve the effectiveness of environmental impact assessment and guidance to carry out environmental protection. In our country, coal mining environmental impact assessment study, still in the exploratory stage. This paper systematically discusses...
Oil pollution can reduce effective porosity of porous medium, and may make surface wettability changed, which consequently change of the characteristics of capillary water movement in the unsaturated zone. In this paper, indoor standpipe method is used to study capillary water movement in diesel and engine oil-contaminated coarse sand, as well as the effect of oil pollution on porous medium capillarity...
To investigate the characteristics of migration and distribution of phenanthrine plays an important role in the control of polynuclear aromatic hydrocarbons (PAHs) contamination. This experiment simulate the migration and distribution of phenanthrine in soil-groundwater by using indoor dynamic soil column test and hydrogeological theories so as to understand the condition and rules of phenanthrine...
In order to examine phenanthrine desorption of the phenanthrine in aeration zones and acquifer, soil from top soil layer, lower aeration zone and acquifer of the vertical profile of the four points in Zhangshi Irrigation area are taken as sample soil, phenanthrine as typical pollutant. The experiment is continuous batch adsorption-desorption experiment whose data are derived from linear models and...
Nonpoint source (NPS) pollution has become one of the biggest challenges in maintaining water quality and aquatic ecosystems. However, the impacts of topography, land use change, human activities, precipitation etc., make the modeling and control of NPS pollution in temporal and spatial scales difficult. In recent years, the rapid development of Remote Sensing (RS) and Geographic Information System...
Environmental accidents occur frequently in China in recent years. A quick estimation of the extent and distribution of contamination after environmental accidents is important for immediate treatment of the contaminated sites. This paper proposed a methodology to estimate the velocity and maximum infiltration depth of NAPL after spill accidents to provide quick and quantitative information for the...
A good numerical non-point source pollution model is an efficient tool for non-point source pollution management, which can be used to analyze the temporal and spatial rules of pollutant discharge. In this paper, SWAT model is adopted to estimate the contribution of non-point source pollution in the Xiangxi River watershed of Three Gorges Reservoir Area in China in 2002-2007a. With the predicted values...
Fluoride contamination transport and adsorption study is a hot subject of soil environment research. Dynamic adsorption, desorption and kinetics study can help us deeply understand the migration and transformation mechanism of fluoride in water and soil system, and provide theoretical basis for environmental assessment and treatment. This paper reveals the fluoride desorption law with the infiltration...
Sorption and degradation behaviors of atrazine were investigated with packed and intact soil columns. The measured breakthrough curves from columns were fitted with CXTFIT model program. The high mobility and long persistence of atrazine indicated by experiment results confirm that atrazine application may cause potential groundwater pollution. It was found that the obtained sorption and degradation...
By utilizing TM/ETM+ remote sensing images from 1984 to 2004 as the major data sources, combining with the field survey to get the rule of dynamic process of Beijing wetland ecosystem, this paper systematic analyzed the hydrology, soil, plant condition of the typical wetland area- Widgeon Lake Wetland Natural Reserve in Beijing. And the results are as follows: In recent years, wetland areas were sharply...
Literature Review, there is no specific study has been done in Mongolia in the field and as our assumption it is significantly important to clarify a link if it exists, between Poverty and some Environmental issues. Our paper comprises with the following 3 topics which are a brief Introduction, Background, Policy Implications and Conclusion. The Background part provides information on poverty situation...
The extensive clayization of Dexing copper mine is responsible for water and soil pollutions because of the oxidation of sulfide minerals. During the clayization, harmful elements such as As, S, Sb and Pb could be effectively released into the clay and water. Using the abundant spectral information of short wave infrared (SWIR), combining with the spectral absorbed index, SAM (Spectrum Angle Mapper)...
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