Leaching agent used for restoration of petroleum hydrocarbon polluted soil and preparation and application thereof

A technology of polluted soil and petroleum hydrocarbons, which is applied in the direction of restoration, application, and soil conditioning materials of polluted soil, and can solve problems such as increasing the difficulty of operation, biological toxicity, and secondary pollution

Inactive Publication Date: 2018-08-24
SHANGHAI HEYUAN ENVIRONMENTAL PROTECTION GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these artificially synthesized surfactants contain environmental hormones, are biologically toxic, and are likely to cause secondary pollution. At the same time, they require higher processing temperatures, which increases the difficulty of operation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Weigh 100g fructolipid and 150g sodium humate respectively, add them into 500ml water, stir until completely dissolved, and the total concentration of the prepared medicament is 500g / L.

[0036] Measure 0.4L of leaching agent, add it to 200g of soil contaminated by petroleum hydrocarbons, and stir at 20°C for 3 hours to remove petroleum hydrocarbons. After that, let it stand for stratification, and the soil will be dehydrated after washing.

[0037] Test results show that the removal rate of petroleum hydrocarbons is 95%.

Embodiment 2

[0039] Weigh 100g fructolipid and 150g sodium carbonate respectively, add it into 500ml water, stir until fully dissolved, the total concentration of prepared medicament is 500g / L.

[0040] Measure 0.4L of leaching agent, add it to 200g of soil contaminated by petroleum hydrocarbons, and stir at 20°C for 3 hours to remove petroleum hydrocarbons. After that, let it stand for stratification, and the soil will be dehydrated after washing.

[0041] The test results show that the removal rate of petroleum hydrocarbons is 93%.

Embodiment 3

[0043] Weigh 80g of polymyxin and 60g of sodium silicate respectively, add them into 300ml of water, stir until completely dissolved, and the total concentration of the prepared medicament is 466g / L.

[0044] Measure 0.2L of rinsing agent, add it to 250g of soil contaminated by petroleum hydrocarbons, and stir at 10°C for 4 hours to remove petroleum hydrocarbons. After that, let it stand for stratification, and the soil will be dehydrated after washing.

[0045] Test results show that the removal rate of petroleum hydrocarbons is 92%.

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PUM

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Abstract

The invention discloses a leaching agent used for restoration of petroleum hydrocarbon polluted soil, and a preparation method and an application thereof. The leaching agent is mainly composed of a biosurfactant and sodium salt, the materials are dissolved with water, and the leaching agent is prepared, the total concentration of the leaching agent is 50-1000 g/L. The leaching agent is used for processing petroleum hydrocarbon polluted soil, and has good petroleum hydrocarbon removal effect, a removal rate of the petroleum hydrocarbon in the soil can reach 90-98%, the leaching agent has biocompatibility, realizes biodegradation in the soil, cannot generate secondary pollution for environment, and has a wide application prospect in the fields of environment restoration.

Description

technical field [0001] The invention relates to the technical field of remediation of petroleum hydrocarbon-contaminated soil, and specifically provides a green and environment-friendly leaching agent and a preparation method thereof, as well as an application of the leaching agent in remediation of petroleum hydrocarbon-contaminated soil. Background technique [0002] The pedosphere is the material basis of human existence. It is not only the base of plant production, the basis of animal production, the basic means of production in agriculture, and the labor object of human farming. It is also closely related to the development of social economy and has a close relationship. [0003] In oil field exploitation technology, the so-called resource depletion includes: landing crude oil, sludge production and crude oil leakage. From an economic point of view, the depletion completely leads to oil pollution in the soil in terms of environmental science, and further leads to soil ec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/32C09K17/40B09C1/08
CPCB09C1/08C09K17/32C09K17/40
Inventor 李诗恬周水雁黄嫣然
Owner SHANGHAI HEYUAN ENVIRONMENTAL PROTECTION GRP
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