Curing utilization method of petroleum hydrocarbon-polluted coast salty soil

A technology of saline soil and petroleum hydrocarbons, which is applied in the restoration of polluted soil, machinery for lifting soil, application, etc., can solve the problems of time-consuming, long-term physical measures, secondary pollution of soil restoration, etc., to achieve increased strength, The effect of solving the problem of secondary environmental pollution

Inactive Publication Date: 2019-01-11
TIANJIN CHENGJIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, there are certain defects in the above methods. Physical measures take a long time, cannot completely remove oil residues, and the treatment effect is not good; chemic

Method used

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  • Curing utilization method of petroleum hydrocarbon-polluted coast salty soil
  • Curing utilization method of petroleum hydrocarbon-polluted coast salty soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] according to figure 1 As shown in the flow chart, the specific method of treating petroleum hydrocarbon polluted coastal saline soil is as follows:

[0049] (1) Prepare each raw material component in the following manner:

[0050] Weigh the coastal saline soil. In order to ensure the uniformity of the experimental soil particles, air-dry the crushed coastal saline soil and pass it through a 2mm sieve. Based on the dry soil weight, add 10% water to the saline soil and let it stand for 24 hours spare. Based on the weight of the coastal saline soil and water, 2% oil was added to the coastal saline soil on the second day to simulate the outdoor oil pollution environment. Based on the weight sum of coastal saline soil, water and oil, weigh 5% cement, 12% lime and 22% fly ash.

[0051] (2) Add the solidified materials lime, fly ash, and cement into the petroleum hydrocarbon-contaminated coastal saline soil, and stir evenly for no less than 5 minutes.

[0052] (3) After th...

Embodiment 2

[0055] according to figure 1 As shown in the flow chart, the specific method of treating petroleum hydrocarbon polluted coastal saline soil is as follows:

[0056] (1) Prepare each raw material component in the following manner:

[0057] Weigh the coastal saline soil. In order to ensure the uniformity of the experimental soil particles, air-dry the crushed coastal saline soil and pass it through a 2mm sieve. Based on the dry soil weight, add 10% water to the saline soil and let it stand for 24 hours spare. Based on the sum of the weight of coastal saline soil and water, 4% oil was added to coastal saline soil on the second day to simulate the outdoor oil pollution environment. Based on the weight sum of coastal saline soil, water and oil, weigh 5% cement, 12% lime and 22% fly ash.

[0058] Remaining steps are identical with embodiment 1.

Embodiment 3

[0060] With embodiment 2, difference only is that the content of petroleum is different, is 8%.

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Abstract

The invention provides a curing utilization method of petroleum hydrocarbon-polluted coast salty soil. The curing utilization method comprises the following steps: preparing coast salty soil, petroleum and a curing material; preparing the petroleum hydrocarbon-polluted coast salty soil; adding the curing material into the petroleum hydrocarbon-polluted coast salty soil, uniformly stirring, pouringa soil sample into a mold, and pressing; and pushing out the sample, and putting the sample into a maintenance tank for maintenance. The hydrocarbon-polluted coast salty soil is processed by virtue of the method, coal ash, lime and cement are added into petroleum-polluted soil, and petroleum is stably adsorbed by virtue of the coal ash, so that the secondary environmental pollution problem in theutilization process of petroleum-polluted soil is solved. Meanwhile, a compound with water-hardening gelation ability is generated by virtue of the pozzolanic reaction and curing reaction between thecoal ash and the lime. A hydration reaction is generated by virtue of AiO2, Al2O3 and Fe2O3 in the coal ash and Ca(OH)2 released during the hydration of the cement so as to generate hydrated calciumsilicate, hydrated calcium aluminate, hydrated calcium carbonate, hydrated calcium ferrite and the like, and the hydrates have a agglutination effect, so that the strength can be further improved.

Description

technical field [0001] The invention belongs to the field of petroleum-contaminated soil treatment, and in particular relates to a solidification and utilization method of petroleum hydrocarbon-contaminated coastal saline soil. Background technique [0002] With the continuous improvement of my country's urbanization development, the demand for infrastructure construction continues to increase, and the reuse of abandoned oil fields and polluted soil is imminent. As an important energy and industrial raw material in the 21st century, petroleum is an important material basis for economic development and the realization of a well-off society in an all-round way. However, during the extraction, transportation and use of petroleum, pollution or leakage is very easy to occur, causing serious damage to the surrounding soil. . Oil pollution will not only make the soil quality worse, but also have a negative impact on the hydraulic properties and mechanical properties of the soil. ...

Claims

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Application Information

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IPC IPC(8): B09C1/08A01B77/00
CPCA01B77/00B09C1/08
Inventor 柴寿喜江建贵魏丽
Owner TIANJIN CHENGJIAN UNIV
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