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Soil repairing agent and soil repairing method

A soil remediation agent and soil remediation technology, applied in the field of soil remediation agents, can solve the problems of high cost and poor treatment effect, and achieve the effects of low treatment cost, improved soil environment and good treatment effect.

Pending Publication Date: 2018-07-24
XIAMEN SONGHU ENVIRONMENTAL TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above technical problems, the object of the present invention is to provide a soil remediation agent and soil remediation method that can effectively reduce the activity of heavy metals in the soil and effectively solve the problem of high cost and poor treatment effect in the soil remediation process.

Method used

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  • Soil repairing agent and soil repairing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Prepare raw materials by the following parts by weight:

[0020] 10 parts of sodium sulfide, 10 parts of ferric oxide, 10 parts of ferric sulfate, 10 parts of calcium oxide, 2 parts of sodium sulfate, 2 parts of calcium nitrate, 10 parts of calcium hydroxide, 10 parts of bentonite, 10 parts of cement.

[0021] Preparation method: Mix the above-mentioned raw materials to obtain the soil restoration agent.

[0022] The test soil was collected from a heavy metal-polluted area, and the heavy metal content in the soil surface of this area was higher than the third-level standard of the "Soil Environmental Quality Standard" (GB15618-1995). Repair according to the actual situation of pollution

[0023] Soil remediation: collect heavy metal contaminated soil, then evenly mix 1% weight of soil remediation agent on the surface contaminated by heavy metal soil, and then carry out soil plowing to fully mix the soil remediation agent and heavy metal contaminated soil, and it will b...

Embodiment 2

[0026] Prepare raw materials by the following parts by weight:

[0027] 15 parts of sodium sulfide, 20 parts of ferric oxide, 15 parts of ferric sulfate, 18 parts of calcium oxide, 1 part of sodium sulfate, 2 parts of calcium nitrate, 15 parts of bentonite.

[0028] Preparation method: Mix the above-mentioned raw materials to obtain the soil restoration agent.

[0029] The test soil was collected from a heavy metal-polluted area, and the heavy metal content in the soil surface of this area was higher than the third-level standard of the "Soil Environmental Quality Standard" (GB15618-1995). Repair according to the actual situation of pollution

[0030] Soil remediation: collect heavy metal contaminated soil, then evenly mix 1% weight of soil remediation agent on the surface contaminated by heavy metal soil, and then carry out soil plowing to fully mix the soil remediation agent and heavy metal contaminated soil, and it will be completed after 5-10 days Soil heavy metal remedi...

Embodiment 3

[0033] Prepare raw materials by the following parts by weight:

[0034] 20 parts of sodium sulfide, 18 parts of ferric oxide, 20 parts of iron sulfate, 15 parts of calcium oxide, 1 part of sodium sulfate, 15 parts of calcium hydroxide, 18 parts of bentonite, and 20 parts of cement.

[0035] Preparation method: Mix the above-mentioned raw materials to obtain the soil restoration agent.

[0036] The test soil was collected from a heavy metal-polluted area, and the heavy metal content in the soil surface of this area was higher than the third-level standard of the "Soil Environmental Quality Standard" (GB15618-1995). Repair according to the actual situation of pollution

[0037] Soil remediation: collect heavy metal contaminated soil, then evenly mix 1% weight of soil remediation agent on the surface contaminated by heavy metal soil, and then carry out soil plowing to fully mix the soil remediation agent and heavy metal contaminated soil, and it will be completed after 5-10 days...

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Abstract

The invention discloses a soil repairing agent which is characterized by comprising the following components in parts by weight: 10-20 parts of a stabilizer, 10-20 parts of iron sesquioxide, 10-20 parts of ferric sulfate, 10-20 parts of calcium oxide, 1-2 parts of sodium sulfate and 10-20 parts of an adsorbent. The invention further discloses a soil repairing method which is characterized in thatsoil repairing can be carried out with the soil repairing agent, and the amount of the soil repairing agent accounts for 0.1-2% of the weight of soil. In conclusion, when being applied to heavy metalpolluted soil repairing, the soil repairing agent disclosed by the invention is capable of effectively repairing polluted soil within a short time, heavy metals can be deactivated, soil environments can be effectively improved, and the soil repairing agent has the advantages of being good in treatment effect, low in treatment cost, and the like.

Description

technical field [0001] The invention relates to the field of soil remediation agents, in particular to a soil remediation agent and a soil remediation method. Background technique [0002] According to the "National Soil Pollution Survey Bulletin" published by the Ministry of Environmental Protection and the Ministry of Land and Resources in 2014, the overall environmental situation in the country is not optimistic. Some areas have serious soil pollution, the environmental quality of cultivated land is worrying, and the environmental problems of industrial and mining waste soil are prominent. Man-made activities such as industry, mining, agriculture, and high background values ​​of the soil environment are the main causes of soil pollution or exceeding standards. The total exceeding rate of national soil is 16.1%, of which the proportions of slightly, lightly, moderately and heavily polluted sites are 11.2%, 2.3%, 1.5% and 1.1% respectively. Inorganic pollutants are the mai...

Claims

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Application Information

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IPC IPC(8): C09K17/10C09K17/08
CPCC09K17/08C09K17/10
Inventor 吴智聪黄益泽
Owner XIAMEN SONGHU ENVIRONMENTAL TECH DEV
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