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The problem of the remediation of contaminated soils with liquid petroleum products is one of the most complex challenges in the field of environmental protection, theoretically and economically and in terms of putting into practice a remediation method. The paper presents the results of a research regarding the combination of two methods generally used: the electrochemical remediation and the soil...
Contamination of soil and ground water by Petroleum hydrocarbons is a serious and wide spread environmental problem. The United State Environmental Protection Agency (U.S EPA) has proposed various technological approaches for treating soil contaminated by petroleum hydrocarbons. Among them, bioremediation is a promising technology used to remediate oil contaminated soil that involves indigenous oil...
Based on the hydrogeology condition of petroleum oil-contaminated sites in Northeast of China, the formation status was setup in lab scale. The migration characteristics of benzene, xylene and naphthalene in heterogeneous soil were investigated. The results showed that migration velocity of the benzene was the fastest, followed by xylene and naphthalene. In addition, the migration velocity in horizontal...
The evaporation of diesel oil, 90# gasoline and aromatic mixture on free surface of petri dishes were carried out at the ambient temperature of 20°C. The results showed that there were different evaporation behaviors for different oil products. Diesel oil evaporates in a power manner, where the loss of mass is approximately power with time, and has the fit equation of y = 0.0062 t0.7612. While 90#...
14 kinds of PCBs were determined in water and soil of a paddy field in Dragon Bridge, Nanjing, P. R. China, which is a typical small watershed irrigated area. The results showed that: 14 congeners of PCBs were detected at different residue levels, the dominant components of PCBs were tri-, tetra-, and penta-chlorinated PCB congeners, accounting for 82.37% ~ 95.45% of total PCBs. The concentration...
Tehran's refinery is located in south of Tehran metropolitan and is one of the oldest Iran's refineries. Currently, 500-700 barrels of petroleum pollutants are collected from the nearby village and underground waters in the peripheries of the refinery every day so in recent years, public sensitivity is focused on its impacts. The main target of this project is the study of the critical environmental...
In-site permeability test was carried out in order to find the permeability coefficient in the ground of the 7 companies (Research Institute of Petroleum Industry, Oil Exploration Operations Company, Commercial Storage, Iranol Company, Distribution Product Oil Company, Iranian Pipeline & Telecommunication Company, Persigas Company) in REY Industrial Area. It is assumed that the 7 companies in...
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...
Dissolved organic matters in organic-polluted raw water and their potential to from disinfection by-products during drinking water treatment raise great challenges to the traditional water treatment process. Although many pre-treatment and post-treatment methods have been widely studied to improve the water quality of tap water, these methods are more or less constrained by the public finance or the...
The pollution of petroleum hydrocarbon in groundwater system has become a serious environmental problem. In this paper, we take Jinan refinery as an example to discuss the composition and migration mechanism of petroleum hydrocarbon contaminants. Based on filed survey and laboratory experiments, we researched the adsorption and desorption of petroleum hydrocarbons and the migration mechanism of them...
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...
Laboratory experiments were employed to investigate the influencing factors of BTEX volatilization. Characteristic of BTEX compounds was critical factor of volatilization; the higher saturated vapor pressure, the greater volatilizing speed. Type and structure of underlying materials determined the volatilization kinetics mode, the influence of channel blocking and adsorption of soils was stronger...
Gasoline is a complex contamination agent, which may be originated from a variety of contamination sources. Sources may include, among others, leakage of underground fuel storage tanks in gas stations and large farms. Identifying and quantifying the soil and groundwater contaminations due to leakage from the underground gasoline tanks are of primary importance in providing better regulations to protect...
Oily sludge, produced mostly in petroleum refineries and petrochemical industries, is one of the major industrial wastes that require treatment. The objective of this work was to recovery oil by washing of oily sludge with nonionic and anionic surfactant. To compare experimental results, three surfactants were used: sodium dodecylbenzene sulfonate (DBS), alkyl phenol polyoxyethylene ether (OP-10)...
The petroleum hydrocarbon contaminant from oil industry can enter the soil and badly influence local environment. We take a groundwater system polluted by refinerypsilas discharged oil as research object in this paper. Firstly, we collect soil and groundwater samples in this area and perform soil column leaching experiments. The experiment results show that the pollution sources are sewage tank and...
Soil and groundwater contamination by petroleum and coal tar becomes one of the urgent environmental issues concerned by more and more scientists with regards to the public health. With the induction of organic contaminants to soil and groundwater it will change the environmental conditions within the plume and hence lead to the variation of indigenous microorganisms. The article aims to investigate...
The petroleum pollution was one of the main environmental problems to the soil and groundwater safety. Efficient remediation of contaminant soil has significance to the organic pollution control of soil and groundwater. The remediation efficiency of pulse soil venting with low air flow to the soil contaminated with diesel fuel for a long time was studied through indoor sandbox test. The concentration...
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