Biostimulation and bioaugmentation repair of oil contaminated soil.

With the development of industrialization,the problem of oil-contamination to the soil is getting more and more serious.How to clear up or remove the oil-contaminants from the soil becomes an important environmental problem for all countries around the world.Bioremediation,as the methods with fast and safe in processing,low cost and non-secondary contamination,is becoming the main solution to soil environment by oil contamination.Biostimulation and bioaugmentation are most commonly used techniques in bioremediation.The theory of bioremediation,including the concept and method of biostimulation and bioaugmentation were introduced,and advance study and progress in this field from the world in recently years were demenstrated.Both of the two methods can lead a significant decrease in soli TPH content,but the efficiency relates to many factors.Accordingly,the bioremediation technique should be tailored specifically to each polluted site.