Method for treating gasoline-contaminated soil

A technology of polluted soil and treatment method, which is applied in the field of gasoline-contaminated soil treatment, which can solve the problems of high repair cost, long repair time, and low efficiency of gasoline-contaminated soil repair, and achieve short repair time, low repair cost, and soil repair efficiency high effect

Inactive Publication Date: 2020-12-11
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the present invention aims to propose a treatment method for gasoline-contaminated soil to solve the problems of low remediation efficiency, long remediation time and high remediation cost of existing gasoline-contaminated soil

Method used

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  • Method for treating gasoline-contaminated soil
  • Method for treating gasoline-contaminated soil

Examples

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Embodiment 1

[0023] A processing method for gasoline-contaminated soil, comprising the following steps:

[0024] 1) naturally air-dry the gasoline-contaminated soil, then remove impurities, pulverize and pass through 80-100 mesh sieves to obtain gasoline-contaminated soil particles;

[0025] 2) In the air atmosphere, put 4.0g of gasoline-contaminated soil particles into the ball mill jar, and then add 7 grinding balls, wherein the total weight of the grinding balls is 29 times the weight of gasoline-contaminated soil particles, that is, 7 grinding balls The total weight of the ball mill is 116.0g, the ball mill ball mill speed is set to 300rpm, according to the ball milling 5min, stop milling 10min, ball milling again 5min, stop milling 10min program to carry out the ball milling reciprocatingly, until the cumulative ball milling time reaches 0.5h (setting ball milling time ) to obtain gasoline degradation treated soil.

[0026] In this embodiment, the inner diameter of the ball mill jar ...

Embodiment 2

[0028] The difference between this embodiment and Embodiment 1 is that the accumulative ball milling time in the method for treating gasoline-contaminated soil in this embodiment is 1 h.

Embodiment 3

[0030] The difference between this embodiment and Embodiment 1 is that the accumulative ball milling time in the method for treating gasoline-contaminated soil in this embodiment is 2 hours.

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Abstract

The invention provides a gasoline-contaminated soil treatment method, which comprises the following steps: 1) drying gasoline-contaminated soil to obtain gasoline-contaminated soil particles; and 2) carrying out ball milling treatment on the gasoline-contaminated soil particles in an air atmosphere to obtain gasoline-degraded soil. According to the treatment method of the gasoline contaminated soil, a specific grinding aid does not need to be added, the content of gasoline in the contaminated soil can be reduced through simple ball milling, the gasoline removal rate can reach 65% or above after ball milling is conducted for 2 h at the rotating speed of 300 rpm, the soil remediation efficiency is high, the remediation time is short, the treatment method is simple in step, mild in conditionand good in treatment effect, high-temperature, high-pressure and other high-load operation conditions and expensive and complex equipment are not needed in the treatment process, the remediation costis low, dioxin and other harmful substances cannot be generated in the treatment process, and secondary pollution to soil is avoided.

Description

technical field [0001] The invention relates to the technical field of contaminated soil treatment, in particular to a method for treating gasoline-contaminated soil. Background technique [0002] Gasoline is a power fuel mainly used in transportation. Its appearance is transparent liquid, flammable, the distillation range is 30°C to 220°C, the main component is C 5 -C 12 Aliphatic hydrocarbons and cycloalkanes, as well as a certain amount of aromatic hydrocarbons, gasoline has a high octane number (anti-knock combustion performance), and is divided into No. 90, No. 93, No. 95, No. 97, etc. according to the octane number. grade. Gasoline is obtained by refining straight-run gasoline components, catalytically cracked gasoline components, catalytic reformed gasoline components and other gasoline components, which are refined and blended with high-octane components, and are mainly used for automobile ignition. fuel for internal combustion engines. Gasoline is one of the mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/00B02C17/10B02C25/00
CPCB09C1/00B02C17/10B02C25/00
Inventor 何晓曼殷梦秋子徐欢乐韩含张其武李晔
Owner WUHAN UNIV OF TECH
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