Method for multi-means combined remediation of oil pollution soil of alkaline lands

Abstract

The invention discloses a method for the multi-means combined remediation of the oil pollution soil of alkaline lands, which comprises the following steps that: (1) the thoroughly decomposed farmyard manure and calcium superphosphate are spread over the oil pollution soil of alkaline lands, and a biosurfactant, namely rhamnolipid with the mass concentration of 0.3% is sprayed; (2) the oil pollution soil of alkaline lands is ploughed up, leveled up and irrigated; (3) alfalfa seeds are wrapped by fungicide which contains oil degradation bacteria and alfalfa rhizobium; (4) the alfalfa seeds which are wrapped by the fungicide are coated; (5) Chinese wild rye seeds are subjected to low-temperature treatment; (6) the coated alfalfa seeds and the Chinese wild rye seeds after low-temperature treatment are mixed, and the mixed seeds are sown in the oil pollution soil of alkaline lands; and (7) field management is carried out after the seedling emergence. The method can effectively decompose, degrade and absorb petroleum pollutants in the oil pollution soil of alkaline lands, and has the characteristics of quick remediation speed, good effect, simplicity in operation, large treatment capacity, easiness for workers to master and the like.

Description

technical field [0001] The invention relates to the field of ecology and environmental protection, in particular to a method for joint restoration of oil-contaminated soil in saline-alkali land with multiple means. Background technique [0002] Petroleum has become one of the most important energy sources for human beings. However, with the leakage of oil extraction, smelting, use and transportation, the discharge of oily wastewater, the volatilization of various petroleum products, and the fall of incomplete combustion, a series of problems have been caused. The problem of soil oil pollution in China, especially the ground crude oil produced in the process of oil exploitation has become an important source of soil pollution, which has brought serious harm to organisms and human health. my country's oil companies produce about 7 million tons of ground crude oil every year, and the average area of ​​crude oil pollution in a single well can reach 0.5-2.1m 2 , about 20m of gro...

AI Technical Summary

Problems solved by technology

[0007] However, at present, there are still few effective cases of combined remediation of oil-contaminated soil in saline-alkali land with multiple means at hom

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