Surfactant, as the major component of oil spill dispersant, is able to remarkably decrease the interfacial tension between spilled oil and seawater and the viscosity of spilled oil, turning it to stable oil-in-water emulsion that will be rapidly dispersed in seawater due to its accelerated biological degradation, reducing the hazardous impact of spilled oil on marine environment.
Reasonably using oil spill dispersant has become one of the important emergency means intended to handle offshore oil spill accidents. For offshore oil spill accidents, oil spill dispersant is usually sprayed via either vessel or plane. However, the sea-surface spraying effect of oil spill dispersant cannot be quantitatively evaluated mainly because of: (1) Uncertainty of environmental conditions such as sea wave and temperature; (2) Difficult accurate evaluation by current technology of area and thickness of sea-surface oil films dispersed by oil spill dispersant. For an underwater oil spill accident like that happened to Deepwater Horizon in Mexico, Remote Operated Vehicles(ROV) was used to jet 3,000 m3 of oil spill dispersant at seabed oil spill starting spot. This is the first large-scale underwater jetting of oil spill dispersant for oil spill accident in the world. However, few researches on underwater application technology and effect of oil spill dispersant are reported so far.
Surfactant, as the major component of oil spill dispersant, is able to remarkably decrease the interfacial tension between spilled oil and seawater and the viscosity of spilled oil, turning it to stable oil-in-water emulsion that will be rapidly dispersed in seawater due to its accelerated biological degradation, reducing the hazardous impact of spilled oil on marine environment. Reasonably using oil spill dispersant has become one of the important emergency means intended to handle offshore oil spill accidents. For offshore oil spill accidents, oil spill dispersant is usually sprayed via either vessel or plane. However, the sea-surface spraying effect of oil spill dispersant cannot be quantitatively evaluated mainly because of: (1) Uncertainty of environmental conditions such as sea wave and temperature; (2) Difficult accurate evaluation by current technology of area and thickness of sea-surface oil films dispersed by oil spill dispersant. For an underwater oil spill accident like that happened to Deepwater Horizon in Mexico, Remote Operated Vehicles(ROV) was used to jet 3,000 m3 of oil spill dispersant at seabed oil spill starting spot. This is the first large-scale underwater jetting of oil spill dispersant for oil spill accident in the world. However, few researches on underwater application technology and effect of oil spill dispersant are reported so far.
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