BUSINESSSoil Remediation
Electrokinetic purification (electrokinetic remediation: ER) and contaminants (anionic, cationic, heavy metals, etc.) of the ion state by an electric field to accelerate the moving velocity of the anode and the cathode in a low permeability soil saturation law saturation region of the contaminated soil treatment is how. The coin processing method is ground (In-situ) as a soil remediation technique by connecting the electrode to the contaminated area and to flow a current of low intensity from a low permeability soil, clay and dredged sludge and marine pollutants removal.
| In-situ/Ex-situ | In-situ |
|---|---|
| Process Principles | Physical and chemical treatment |
| Coverage area | saturated region |
| Apply medium | Soil |
| Processing substance |
- BTEX, TCE, Phenol, Inorganic materials - Non-halogenated VOCs and SVOCs, oil |
Bioventing is the use of microorganisms in the soil or in situ soil remediation extraction Correct injection technique that utilizes indigenous microbial removal of biodegradable organic matter present in the unsaturated zone air underground injection or by feeding nutrient pollutants in unsaturated the technique of inducing degradation. Bioventing is a soil vapor extraction (SVE) is similar to the soil vapor extraction method for removing volatile contaminants, while mainly biological ventilation method is to minimize the evaporation of the contaminants and facilitate the biodegradation technology.
| In-situ | In-situ |
|---|---|
| Process Principles | Biological treatment |
| Coverage area | Unsaturated region |
| Apply medium | Soil |
| Processing substance |
- Non-halogenated VOCs and SVOCs, oil - Hydrocarbon oil, Chlorinated solvents, Pesticides, organic compounds |
The Biopile is Biocells, Bioheaps, Biomounds, also known bulriwoomyeo Compost Piles, to process the organic pollutants in the soil through a biological reaction process. Air and nutrient injection, and through the pipe and then stacked file (piles) to excavate the contaminated soil region as a surface treatment (Ex-situ) techniques to maximize the activity of the microorganisms by adjusting the moisture content of the process technology.
| In-situ/Ex-situ | In-situ |
|---|---|
| Process Principles | Biological treatment |
| Coverage area | Unsaturated region, saturated region |
| Apply medium | Soil |
| Processing substance | - Non-halogenated VOCs and SVOCs, oil |
The input to the thermal desorption unit to process heat at a constant temperature of soil in a controlled environment as to volatilize the contaminants adsorbed to soil and surface treatment technologies for the removal of contaminated sites contaminated soil excavation method is thermal desorption method. It is divided into two types of heat treatment (thermal decomposition) to decompose the organic material applied to the column in the absence of the anaerobic treatment (incineration), and oxygen by combustion directly heat treatment, the operating temperature for the removal of contaminants back pyrolysis form thermal desorption method (400 ~ 800 �꼦) and low temperature thermal desorption method (about 400 �꼦 or less) this is hot by.
| In-situ/Ex-situ | Ex-situ |
|---|---|
| Process Principles | Thermal processing |
| Coverage area | Unsaturated region, saturated region |
| Apply medium | Soil |
| Processing substance | - Non-halogenated VOCs and SVOCs, oil |
The bioremediation technology to remove organic contaminants remaining in the soil as provide an aerobic microbial biodegradation conditions laid flat on the ground upside down by giving regularly to supply air to the excavation of the contaminated landfarming soil. In addition, to facilitate the volatilization of the volatile organic compound adsorbed to the soil by increasing the maximum contact with the contaminated soil and air, the physical / chemical process and is included also.
| In-situ/Ex-situ | In-situ |
|---|---|
| Process Principles | Biological treatment |
| Coverage area | Unsaturated region, saturated region |
| Apply medium | Soil |
| Processing substance |
- Non-halogenated VOCs and SVOCs, oil: Effective - Radioactive materials, inorganic materials or: Ineffective |
The soil washing method for processing to extract the adsorbed to the surface by the soil contaminants desorbed by the pores in the soil through the injection wells contained the additives (a surfactant, etc.) to increase the water solubility or water pollutants Treatment of Ground among the physical / chemical treatment techniques. The purification of the contaminated soil area by increasing the solubility of the adsorbed to soil particles and contaminants passing through the contaminated area of the basement through the extraction and desorption from soil particles, this information flowed through the injection wells pumping cleaning solution.
| In-situ/Ex-situ | In-situ |
|---|---|
| Process Principles | Physical and chemical treatment |
| Coverage area | Unsaturated region |
| Apply medium | Soil |
| Processing substance |
- Non-halogenated VOCs and SVOCs, oil: Effective - Radioactive materials, inorganic materials or: Ineffective |
Soil washing is a surface treatment method for the organic contaminants and heavy metals harmful soil particles separate from the surface tension of the treatment of hazardous organic pollutants in the soil particles which is bonded using a suitable detergent, or weakened by changing the liquid heavy metal (Ex The -situ) technology. The techniques through the use of post-treatment to remove contaminants and recycled back to the cleaning solution, and then extracted by utilizing the cleaning agent increases the solubility of the contaminant is a soil washing method.
| In-situ/Ex-situ | Ex-situ(off-situ) |
|---|---|
| Process Principles | Physical and chemical treatment |
| Coverage area | Unsaturated region |
| Apply medium | Soil |
| Processing substance |
- Non-halogenated VOCs and SVOCs, oil: Effective - Radioactive materials, inorganic materials or: Ineffective |
The ground processing technology, also known as vacuum extraction, to remove volatile and semi-volatile organic compounds from the soil as defined by the zoom makes the installation of gas extraction on the aquifer to the unsaturated soil Soil vapor extraction is the vacuum state. Is effective in reducing petroleum compounds of volatile organic compounds and semi-volatile organic quality compound concentrations in some underground storage tank area.
| In-situ/Ex-situ | In-situ |
|---|---|
| Process Principles | Physical and chemical treatment |
| Coverage area | Unsaturated region |
| Apply medium | Soil |
| Processing substance | - Non-halogenated VOCs and SVOCs, oil: Effective |