Conditioner for repairing heavy metal polluted soil, and preparation method thereof

A technology of polluted soil and conditioner, which is applied in the field of repairing heavy metal-contaminated soil conditioner and its preparation, can solve the problems of heavy metals entering the soil, secondary pollution, soil heavy metal pollution, etc., to improve permeability, enhance adsorption performance, and benefit fixed effect

Inactive Publication Date: 2019-08-23
苏州逸纪杰电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some mines did not set up rock dumps and tailings ponds during mining, and waste rocks and tailings were piled up randomly, causing heavy metals in the tailings to enter the soil. In addition, the remaining metal waste after ore processing entered the groundwater system with rainwater, causing serious damage. soil heavy metal pollution
[0004] Existing soil remediation agents mainly use biological action or chemical solidification, and the solidified heavy metal ions are still easy to migrate to the underlying soil, causing secondary pollution

Method used

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  • Conditioner for repairing heavy metal polluted soil, and preparation method thereof

Examples

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example 1

[0051] A conditioner for repairing heavy metal polluted soil, comprising the following raw materials in parts by weight: 50 parts of modified cork powder, 20 parts of modified sepiolite, 120 parts of modified gelatin liquid, 3 parts of urease, 3 parts of urea, 3 parts of oyster shell powder, 5 parts casein solution.

[0052] The starch is corn starch.

[0053] The carbomer is carbomer 934.

[0054] A preparation method for repairing heavy metal-contaminated soil conditioner, the specific preparation process of the repair heavy metal-contaminated soil conditioner is:

[0055] (1) In parts by weight, take 50 parts of cork powder, 0.2 parts of wood rotting fungus, and 8 parts of water in turn, put the cork powder, wood rotting fungus, and water in No. 1 ball mill, mix and ball mill for 50 minutes, and then let it stand for 24 hours , filter to obtain No. 1 filter residue, then place No. 1 filter residue in liquid nitrogen and freeze to obtain frozen No. 1 filter residue, then p...

example 2

[0063] A conditioner for repairing heavy metal polluted soil, comprising the following raw materials in parts by weight: 50 parts of cork powder, 20 parts of modified sepiolite, 120 parts of modified gelatin solution, 3 parts of urease, 3 parts of urea, 3 parts of oyster shells powder, 5 parts casein solution.

[0064] The starch is corn starch.

[0065] The carbomer is carbomer 934.

[0066] A preparation method for repairing heavy metal-contaminated soil conditioner, the specific preparation process of the repair heavy metal-contaminated soil conditioner is:

[0067] (1) In terms of parts by weight, take 20 parts of sepiolite, 30 parts of hydrochloric acid, and 50 parts of water in turn, put the sepiolite in a muffle furnace, and roast it for 3 hours at a temperature of 750°C to obtain Sepiolite, then the roasted sepiolite is placed in No. 5 ball mill for ball milling, and a 160-mesh sieve is obtained to obtain pretreated sepiolite. The pretreated sepiolite and the mass fr...

example 3

[0072] A conditioner for repairing heavy metal polluted soil, comprising the following raw materials in parts by weight: 50 parts of modified cork powder, 20 parts of modified sepiolite, 120 parts of gelatin solution, 3 parts of urease, 3 parts of urea, 3 parts of oyster shells powder, 5 parts casein solution.

[0073] The starch is corn starch.

[0074] A preparation method for repairing heavy metal-contaminated soil conditioner, the specific preparation process of the repair heavy metal-contaminated soil conditioner is:

[0075] (1) In parts by weight, take 50 parts of cork powder, 0.2 parts of wood rotting fungus, and 8 parts of water in turn, put the cork powder, wood rotting fungus, and water in No. 1 ball mill, mix and ball mill for 50 minutes, and then let it stand for 24 hours , filter to obtain No. 1 filter residue, then place No. 1 filter residue in liquid nitrogen and freeze to obtain frozen No. 1 filter residue, then put the frozen No. 1 filter residue in No. 2 ba...

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Abstract

The invention relates to the technical field of soil treatment, and concretely to a conditioner for repairing heavy metal polluted soil, and a preparation method thereof. The preparation method comprises the following steps: sepiolite is calcined, ball-milled and sieved to obtain pretreated sepiolite, the pretreated sepiolite is mixed with hydrochloric acid, the obtained mixture is stirred and mixed, the mixture is filtered, washed and dried to obtain modified sepiolite, gelatin is mixed with water, the obtained mixture stands for swelling, the mixture is heated and stirred for dissolving, andthen is cooled, gelatinase is added, the obtained mixture is mixed, is heated for enzyme deactivation, and then is cooled, carbomer is added, the obtained mixture is mixed, ammonia water is added toadjust the pH value, the obtained mixture is stirred and mixed to obtain a modified gelatin liquid, and a modified cork powder, the modified sepiolite, the modified gelatin liquid, urease, urea, oyster shell powder and casein solution are stirred and mixed to obtain the conditioner for repairing heavy metal polluted soil. The conditioner for repairing heavy metal polluted soil has good absorptionand fixation effects on heavy metal ions, has a good repairing effect on the heavy metal polluted soil, and has a long service life.

Description

technical field [0001] The invention relates to the technical field of soil treatment, in particular to a conditioner for repairing heavy metal polluted soil and a preparation method thereof. Background technique [0002] Heavy metals in polluted soil mainly include mercury, cadmium, lead, chromium and other elements with significant biological toxicity, as well as certain toxic elements such as zinc (Zn) and copper (Cu). Mainly from industrial and mining enterprises waste residue, waste water, sludge, pesticides and soot atmospheric deposition. [0003] Heavy metal pollutants have little mobility in the soil and are not degraded by microorganisms. After entering the human body through the food chain, the potential harm is extremely great. Therefore, special attention should be paid to soil pollution by heavy metals. Some mines did not set up rock dumps and tailings ponds during mining, and waste rocks and tailings were randomly piled up, causing heavy metals in the tailing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40B09C1/08B09C1/10
CPCB09C1/08B09C1/10C09K17/40
Inventor 张琦
Owner 苏州逸纪杰电子科技有限公司
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