STUDY ON SOIL ENVIRONMENT AND ABORIGINAL ANIMALCULE CONDITION OF BIOVENTING SYSTEM

Soil environment and aboriginal animalcule condition of a pilot bioventing system were studied.Air permeability of field soil was obtained k1=4.8446×10-12m2 by soil column method.Meanwhile,relative permeability curve of air-water was gained by biphase flowing experiment.During experiment period,average of soil water content was 0.2689g and pH value was 7.0—8.5.The quantity of aboriginal animalcule went down sharply after pouring contamination into the ground and then rose gradually to its original level which was 107(unit·g-1dry soil).The result shows that Bioventing is available to field remediation for oil pollution with this kind of soil condition.