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Petroleum-polluted soil remediation method

A technology for soil remediation and petroleum pollution, which is applied in the field of petroleum hydrocarbon contaminated soil remediation, and can solve secondary pollution and other problems

Active Publication Date: 2021-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Usually, the existing artificially synthesized surfactants contain environmental hormones, which have certain biological toxicity and are easy to cause secondary pollution, and for many types of oil-contaminated soils, it is necessary to develop chemical leaching reagents to meet the needs of different types. removal of petroleum pollutants

Method used

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  • Petroleum-polluted soil remediation method
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  • Petroleum-polluted soil remediation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Sodium chloride is added in water, is mixed with the sodium chloride solution that concentration is 0.5% by weight under stirring at room temperature; Then the sulfonated modified surfactant of 0.5g (wherein M + for Na + ) was added to 99.5g of the sodium chloride solution, at room temperature, the rotation speed was 200rpm, and stirred for 35min until fully mixed to obtain a modified eluent solution.

[0051] The content of the sulfonated modified surfactant in the modified rinse agent is 0.5% by weight, and the content of sodium chloride is 0.5% by weight.

Embodiment 2

[0053] Sodium chloride is added in water, is mixed with the sodium chloride solution that concentration is 0.3% by weight under stirring at room temperature; Then the sulfonated modified surfactant of 0.75g (wherein M + for NH 4 + ) was added to 99.25g of the sodium chloride solution, at room temperature, with a rotation speed of 200rpm, stirred for 40min until fully mixed, to obtain a modified eluent solution.

[0054] The content of the sulfonated modified surfactant in the modified rinse agent is 0.75% by weight, and the content of sodium chloride is 0.3% by weight.

Embodiment 3

[0056] Sodium chloride is added in water, is mixed with the sodium chloride solution that concentration is 0.8% by weight under stirring at room temperature; Then the sulfonated modified surfactant of 1g (wherein M + for K + ) was added to 99g of the sodium chloride solution, at room temperature, with a rotation speed of 300rpm, stirred for 40min until fully mixed, to obtain a modified eluent solution.

[0057] The content of the sulfonated modified surfactant in the modified rinse agent is 1% by weight, and the content of sodium chloride is 0.8% by weight.

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Abstract

The invention relates to the field of petroleum hydrocarbon contaminated soil remediation, and discloses a petroleum -polluted soil remediation method which comprises the following steps: contacting a modified eluting agent with oil-containing soil with the hydrocarbon oil content greater than or equal to 0.1 wt%, wherein the modified eluting agent contains the following components which are independently stored or stored in a mixed manner: a sulfonated modified surfactant, soluble inorganic salt and water, and the sulfonated modified surfactant has a structure as shown in a formula (I). According to the method, high-content petroleum hydrocarbon pollutants in the soil can be effectively removed, meanwhile, the eluting agent involved in the method has good biocompatibility, can be degraded in the environment and cannot cause secondary pollution, and finally the purpose of green soil remediation and utilization is achieved.

Description

technical field [0001] The invention relates to the field of remediation of soil contaminated by petroleum hydrocarbons, in particular to a soil remediation method after petroleum pollution. Background technique [0002] With the development of economy, the progress of science and technology, and the improvement of productivity, all kinds of material wealth are constantly enriched. At the same time, natural resources are consumed excessively, ecological damage is quite serious, and various environmental pollution problems emerge in endlessly, especially soil pollution, which has seriously endangered human beings. Survival and development, among them, oil-contaminated soil has become one of the most urgent issues of common concern to all countries in the world. [0003] Oil pollution to soil has different characteristics from other soil pollution. Petroleum is a complex mixture of alkanes, aromatic hydrocarbons, aliphatic hydrocarbons and other compounds such as sulfides, ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/08
CPCB09C1/08
Inventor 秦冰巩赫乔富林赵锐孙钰林江建林曹晓磊
Owner CHINA PETROLEUM & CHEM CORP
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