BIOREMEDIATION OF OIL-CONTAMINATED SOIL BY LANDFARMING: ASSESSMENT OF SOIL QUALITY USING A FIELD TEST KIT. H.M. Edenborn1, K.A. The biological removal of petroleum products using landfarming has been applied commercially in large scale with relative success. The technology has been. PDF | Landfarming is an attractive bioremediation treatment approach for soils contaminated with polycyclic aromatic hydrocarbons (PAHs).
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Hydrocarbon compounds that have been identified as being not readily degraded by land farming include creosotepentachlorophenol PCPand bunker C oil.
Contaminated soilssedimentsor sludges are transported to the landfarming site, incorporated into the landfaeming surface and periodically turned over tilled to aerate the mixture. This page was last edited on 26 Augustat A large amount of space is required. Land Farming is a bioremediation technology. Soil conditions are controlled to optimize the rate of contaminant degradation.
If it cannot be shown that biodegradation occurs for all contaminants of concern, land farming should not be used. Introduction to Hazardous Waste Incineration. Technology Development Status Numerous full-scale operations have been conducted, particularly for sludges produced by the petroleum industry. Therefore, the rate at which contaminants are degraded must be balanced with the potential of creating a larger body of contamination. From Wikipedia, the free encyclopedia.
The depth of treatment is limited to the depth of achievable tilling normally 18 inches.
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Contaminated soils are mixed with soil amendments such as soil bulking agents and nutrients, and then they are tilled into the earth. Applicability Land farming has been proven most bioremddiation in treating petroleum hydrocarbons and other less volatile, biodegradable contaminants. Dust control is an important consideration, especially during tilling operations. This technique has been used for years in the management and disposal of drill cuttingsoily sludge and other petroleum refinery wastes.
Many waste constituents may be banned by regulation from being applied to soil.
Landfarming – Wikipedia
Runoff collection facilities must be constructed and monitored. Conditions affecting biological degradation of contaminants e. A land farm must be managed properly to prevent both on-site and off-site problems with ground water, surface waterair, and food chain contamination. Inorganic contaminants will landfarmign be biodegraded, but they may be immobilized.
Limitations and Concerns A land farm must be managed landfaring to prevent both on-site and off-site problems with ground water, surface waterair, and food chain contamination. Land Farming Description Land Farming is a bioremediation technology.
Numerous full-scale operations have been conducted, particularly for sludges produced by the petroleum industry. Landfarming is an ex-situ waste treatment process that is performed in the upper soil zone or in biotreatment cells.
Army Environmental Center, MD: Views Read Edit View history. The equipment employed in land farming is typical of that used in agricultural operations. These land landfarmung activities cultivate and enhance microbial degradation of hazardous compounds.
Land Farming incorporates contaminated soil into soil that is uncontaminated, creating a larger volume of contaminated material.
Composting also generally takes place in aboveground piles. The possible leaching of contaminants from the contaminated soil into the ground and groundwater is a major concern.
Land farms must not be used to dilute contaminants. Land Farming differs from composting because llandfarming actually incorporates contaminated soil into soil that is uncontaminated. Land farming is considered a commercial technology.
The material is periodically tilled for aeration. Also, the more chlorinated or nitrated the compound, the more difficult it is to degrade. Land farming has been proven most successful in treating petroleum hydrocarbons and other less volatile, biodegradable contaminants.
Moisture content, frequency of aeration, and pH are all conditions that may be controlled. Many mixed products and wastes include some volatile components that transfer to the atmosphere before they can be degraded. The more chlorinated or nitrated the compound, landfarmihg more difficult it is to degrade.
Contaminants that have been successfully treated include diesel fuel, No. Contaminants are degraded, transformed, and immobilized by microbiological processes and by oxidation.