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New remediation method for soil contaminated by petroleum hydrocarbon

A technology for polluted soil and petroleum hydrocarbons, which is applied in the field of soil remediation and can solve problems such as petroleum-contaminated soil

Active Publication Date: 2016-02-24
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem of petroleum-contaminated soil and provide a new method for remediating petroleum hydrocarbon-contaminated soil

Method used

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  • New remediation method for soil contaminated by petroleum hydrocarbon

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Effect test

Embodiment 1

[0033] A new method for repairing petroleum hydrocarbon contaminated soil is characterized in that it mainly includes the following steps:

[0034] 1) Pretreatment

[0035] 1.1) Use a crusher to crush and sieve petroleum hydrocarbon-contaminated soil (the initial concentration of petroleum hydrocarbon is 17695 mg / kg) to obtain contaminated soil with a particle size less than 10 cm;

[0036] 1.2) The crushed polluted soil obtained in step 1.1) is weighed to obtain a polluted soil weight of 20g;

[0037] 2) Solubilization treatment

[0038] 2.1) Mix the solubilizer sodium carboxymethyl cellulose with water, stir evenly to make a carboxymethyl cellulose sodium solution, the concentration of the solubilizer solution is 0.5%;

[0039] 2.2) Stir and mix the weighed contaminated soil obtained in step 1.2) with the sodium carboxymethyl cellulose solution, and the mass ratio of the contaminated soil to the sodium carboxymethyl cellulose solution is 1:10. The solubilization treatment...

Embodiment 2

[0050] A new method for repairing petroleum hydrocarbon contaminated soil is characterized in that it mainly includes the following steps:

[0051] 1) Pretreatment

[0052] 1.1) Use a crusher to crush and sieve petroleum hydrocarbon-contaminated soil (initial concentration of petroleum hydrocarbon is 4838 mg / kg) to obtain contaminated soil with a particle size less than 10 cm;

[0053] 1.2) The crushed polluted soil obtained in step 1.1) is weighed to obtain a polluted soil weight of 20g;

[0054] 2) Solubilization treatment

[0055] 2.1) Mix the solubilizer sodium carboxymethyl cellulose with water, stir evenly to make a carboxymethyl cellulose sodium solution, the concentration of the solubilizer solution is 0.3%;

[0056] 2.2) The weighed polluted soil obtained in step 1.2) is stirred and mixed with the sodium carboxymethyl cellulose solution, and the mass ratio of the polluted soil and the sodium carboxymethyl cellulose solution is 1:5. The solubilization treatment time...

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Abstract

The invention discloses a new remediation method for soil contaminated by petroleum hydrocarbon. The new remediation method comprises the steps of (1) pretreatment; (2) solubilizing treatment; (3) chemical oxidation treatment of the soil; (4) supernate fluid reuse and chemical oxidation treatment. The new remediation method aims to solve the problems that in the prior art, in the process of treating the soil contaminated by the petroleum hydrocarbon through a chemical method, the consumption of chemicals is huge, the treatment cost is high and chemical residuals easily cause secondary pollution. Thus, an environment-friendly remediation technology capable of remedying the oil-contaminated soil and treating secondary pollution generated in the remediation process is provided.

Description

technical field [0001] The invention relates to the field of soil remediation, in particular to a new method for remediation of petroleum hydrocarbon contaminated soil. Background technique [0002] Soil is an important part of the ecological environment and one of the main resources for human survival. For a country with a large population like my country, land resources are particularly important. Petroleum has become one of the most important energy sources for human beings. With the increase in demand for petroleum products, a large amount of petroleum and its processed products enter the soil, causing harm to organisms and humans, and the oil pollution of the soil is becoming more and more serious. This has become a worldwide phenomenon. environmental problems. [0003] In the process of oil production, storage, transportation, refining, processing and use, due to accidents, abnormal operation and maintenance, etc., there will be spillage and discharge of oil, which wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/08
CPCB09C1/08
Inventor 刘元元马浩程榉瑨王涛肖文燕
Owner CHONGQING UNIV
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