High-efficiency treatment process for removing marine spill oil

Abstract

The invention provides a high-efficiency treatment process for removing marine spill oil. The process comprises the steps that 1, sediment taken from a muddy beach at the mouth of the Yellow River is air-dried and screened to obtain particles with the particle sizes not more than 38 microns, and an appropriate number of particles and seawater are mixed to prepare a particle solution of 1.0-3.0 g / L, and the particle solution is canned and stored; 2, a waste cleaning boat is used for spraying oil dispersant and the particle solution with the appropriate concentration to the surface layer of the spill oil, and a stirring device is used for enabling a spill oil region to maintain a turbulent fluctuation state until the spill oil is cleared away; the mass ratio of the particles to the oil dispersant ranges from 7.5:1 to 12.0:1, and the use amount of the oil dispersant accounts for 15-20 percent of the amount of the spill oil. According to the process, the particles and the oil dispersant are combined to remove the marine spill oil, the oil dispersant is used for promoting dispersion of the spill oil, power is supplied through the hydrodynamic condition of the ocean, a propeller of the waste cleaning boat and the shipborne stirring device, particle materials play a role of dispersing agents and oil gelling agents, and the clearance efficiency of the spill oil is greatly improved on the basis of reducing the use amount of the oil dispersant.

Description

technical field [0001] The present invention provides a process that can be used to clean up marine oil spills. Background technique [0002] With the increase of global demand for petroleum products and marine transportation of petroleum, more and more marine oil spill accidents occur. Due to the highly toxic effect of oil on aquatic ecology, especially the fragile beach ecosystem, once an oil spill occurs, it is necessary to carry out timely oil spill removal. At present, the main methods to deal with marine oil spill pollution are physical method, chemical method, biological method and incineration method. The physical method mainly includes the deployment of oil booms in the oil spilled waters to prevent the spread of oil spills, and the organization of cleaning ships to remove the spilled oil by mechanical recovery such as oil skimmers and adsorption of absorbent felts and other physical methods. The deployment of oil booms can also be combined with incineration for t...

AI Technical Summary

Problems solved by technology

However, the chemical degreasers circulating on the market often have the following problems when they actually deal with large-scale oil films: (1) they have the weakness of low emulsification rate or ineffectiveness for high-viscosity oil or when used at low temperature; (2) The consumption of oil dispersant is high, and the treatment cost is expensive. The amount of oil dispersant is usually 30-40% of the oil spill, and the consumption can reach 100% of the oil spill when dealing with low viscosity or thin oil layer.

However, the particle size used in this method must be 6-10 μm. Therefore, complex sorting steps are required to obtain particles with a particle size that meets the requirements, and the cost is high.

In addition, the content of particles with the above particle sizes in nearshore sediments is very small, generally between 0.06% and 0.75%, which is difficult to meet the needs of large-scale marine oil spill treatment

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