Abstract
Aiming at the prominent problem of soil oil pollution in northern Shaanxi, this paper comprehensively analyzed the current situation of soil oil pollution in northern Shaanxi, phytoremediation technology for polluted soil, and microbially enhanced phytoremediation technology. The analysis showed that with the continuous expansion of the scale of oil development, the oil pollution in northern Shaanxi is extremely serious, which makes the ecologically fragile areas face a severe test. In response to pollution problems, scholars have carried out extensive research on green remediation technologies such as suitable plants and microbial combined plants, and have accumulated certain research results, which provide technology support for establishing a phytoremediation scientific system suitable for the oil-polluted soil in the local environment of northern Shaanxi.
Highlights
The average annual oil output in the world is about 4 billion tons
This paper summarized the current situation of oil pollution in northern Shaanxi, and summarized the current status of plants and plant joint remediation technologies on local oil-polluted soil, with a view to providing theoretical support for the local oil-polluted soil remediation
Some researchers have monitored the oil pollution of the soil near an oil well in Yulin, and the results showed that the total petroleum hydrocarbon concentration at 12~16 cm below the surface exceeds 20 g kg-1[7]
Summary
The average annual oil output in the world is about 4 billion tons. Some statistics showed that 2 kg of pollutants enter the environment for every 1 t of oil production on average. There are about 8 million tons of oil pollutants entering the environment every year. These pollutants will eventually enter the soil in multiple ways, causing pollution to the soil quality. The proven oil reserves of Yan'an in northern Shaanxi are 1.4 billion tons, and 360 million tons in Yulin. With the continuous expansion of the scale of oil development, the environment in the ecologically fragile northern Shaanxi region is facing extremely severe tests, and the problems of pollution and ecological destruction have become increasingly serious[1,2]. The United States, Netherlands, Italy and other countries have carried out many years of research on the remediation of oil-polluted soil. This paper summarized the current situation of oil pollution in northern Shaanxi, and summarized the current status of plants and plant joint remediation technologies on local oil-polluted soil, with a view to providing theoretical support for the local oil-polluted soil remediation
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