FIELD: environmental protection.
SUBSTANCE: invention relates to recovery of contaminated soil. Method of cleaning soil from oil and oil products includes introduction of reagent into contaminated soil. Pine sawdust with fraction of 2-10 mm is used as reagent. Reagent is added in amount of 10-30 % of contaminated soil volume. Reagent and soil shall be mixed at least once every three days. Mixture moisture of 60-70 % shall be maintained. Abovementioned operations are performed in vegetation period during 40-90 days. In case residual concentration of oil and oil products in treated soil exceeds the level of maximum allowable concentration, advanced treatment of soil shall be performed. Advanced treatment is performed by sowing mustard seeds and its removal and recycling with roots and leaves after decay.
EFFECT: avoiding the need to use biological preparations for cleaning; reduced time of soil cleaning.
1 cl, 1 dwg
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