The invention provides an extracting
solvent, a method for treating waste based on the same and application of the method. The extracting
solvent is prepared from halogenated hydrocarbons and alkanes. The method comprises the following steps: mixing and stirring the extracting
solvent with oil-containing waste; then separating
solid-liquid phases through centrifuging; pouring a separated
solid phase into a
distillation device for heating and
drying, and recycling water and the extracting solvent in the
solid phase; pouring a separated
liquid phase into the
distillation device, and recycling the water, oils and the extracting solvent. According to the extracting solvent, the method and the application, provided by the invention, the problems that an oil-containing
waste treatment technology in the prior art is narrow in application range, high in
energy consumption, complicated in technology, high in cost, easy to cause secondary
pollution and the like are solved; the extracting solvent, the method and the application, provided by the invention, have the advantages that not only can oil-based drillings generated during a drilling process be treated, but also oil-containing
sludge generated during
oil field exploitation and transportation can be treated, recycling and reutilization of the oil and the extracting solvent can be realized, a technological process is relatively simple, the extracting efficiency is high, centralized treatment is suited, harmlessness and reclamation can be realized, the secondary
pollution cannot be caused, and the like.