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Restoration agent and preparation method thereof and method using restoration agent to restore heavy metal-polluted soil

A technology of remediation agent and raw material, applied in the field of remediation of heavy metal soil pollution

Inactive Publication Date: 2018-03-20
CHANGSHA QIUDIANBING INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a remediation agent, its preparation method, and a method for remediating heavy metal-contaminated soil with it, so as to solve the problem disclosed in the Chinese patent application document "A Remediation Agent for Heavy Metal Contaminated Soil" (publication number: CN201611024221) Based on the restoration agent, how to optimize the process, improve the removal rate of mercury, cadmium, lead, arsenic and pyrene, and make the restoration effect better

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  • Restoration agent and preparation method thereof and method using restoration agent to restore heavy metal-polluted soil

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preparation example Construction

[0023] The preparation method of described restorative agent, comprises the following steps:

[0024] S1, milling: first mix and pulverize longan skin and bean root stalks by weight, pass through a 600-800 mesh sieve after pulverization, and obtain a mixed powder;

[0025] S2. Fermentation: Add the mixed powder, biochar, sepiolite, calcium dihydrogen phosphate, bagasse, lime powder, and chitosan prepared in step S1 to water in proportion by weight at a temperature of 35-50°C After stirring evenly, put it under anoxic condition to ferment for 12-18h, then add tartaric acid, hydroxyethylidene triphosphonic acid, potassium lignosulfonate, malic acid, chitosan under anaerobic environment, stir evenly and continue to ferment for 1-3h , to prepare semi-finished restorative agent;

[0026] S3. Drying and pulverizing: drying the semi-finished restorative agent prepared in step S2 for 20-35 minutes at a temperature of 50-70° C. until the moisture content of the semi-finished restorati...

Embodiment 1

[0030] A restoration agent, in parts by weight, comprising the following raw materials: 10 parts of biochar, 12 parts of sepiolite, 16 parts of calcium dihydrogen phosphate, 11 parts of bagasse, 10 parts of lime powder, 13 parts of longan skin, 30 parts of tartaric acid 53 parts of hydroxyethylidene triphosphonic acid, 25 parts of potassium lignosulfonate, 47 parts of malic acid, 5 parts of chitosan, 13 parts of bean root straw;

[0031] The bean root stalk is soybean root stalk;

[0032] The preparation method of described restorative agent, comprises the following steps:

[0033] S1, milling: first mix and pulverize longan skin and bean root stalks by weight, pass through a 600-mesh sieve after pulverizing to obtain mixed powder;

[0034] S2. Fermentation: Add the mixed powder, biochar, sepiolite, calcium dihydrogen phosphate, bagasse, lime powder, and chitosan prepared in step S1 to water in proportion by weight and stir evenly at a temperature of 35°C Finally, put it und...

Embodiment 2

[0038] A restoration agent, in parts by weight, comprising the following raw materials: 13 parts of biochar, 14 parts of sepiolite, 19 parts of calcium dihydrogen phosphate, 15 parts of bagasse, 13 parts of lime powder, 16 parts of longan skin, 33 parts of tartaric acid 57 parts of hydroxyethylidene triphosphonic acid, 29 parts of potassium lignosulfonate, 54 parts of malic acid, 7 parts of chitosan, 17 parts of bean root straw;

[0039] The legume root stalks are 8 parts of black bean root stalks and 9 parts of red bean root stalks;

[0040] The preparation method of described restorative agent, comprises the following steps:

[0041] S1, milling: first mix and pulverize longan skin and bean root stalks by weight, pass through a 700-mesh sieve after pulverization to obtain mixed powder;

[0042]S2. Fermentation: Add the mixed powder, biochar, sepiolite, calcium dihydrogen phosphate, bagasse, lime powder, and chitosan prepared in step S1 to water in proportion by weight and s...

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Abstract

The invention discloses a restoration agent and a preparation method thereof and a method using the restoration agent to restore heavy metal-polluted soil, and belongs to the technical field of restoration of heavy metal soil pollution. The restoration agent is prepared from the following raw materials of biochar, sepiolite, monocalcium phosphate, sugarcane residues, lime powder, longan peel, tartaric acid, hydroxyethyl triphosphate, potassium lignosulphonate, malic acid, chitosan and soybean straw. The restoration agent is prepared by the following steps of powder preparing, fermenting, powder drying and the like. The restoration agent has the advantages that the preparation technology is simple; when the restoration agent is used for restoring the heavy metal-polluted soil, the removal rate of mercury, cadmium, lead, arsenic and pyrene is increased.

Description

【Technical field】 [0001] The invention belongs to the technical field of repairing heavy metal soil pollution, and in particular relates to a repairing agent, a preparation method thereof and a method for repairing heavy metal polluted soil with the repairing agent. 【Background technique】 [0002] At present, the area of ​​cultivated land polluted by heavy metals in mainland China is nearly 20 million hectares. It accounts for about 1 / 5 of the total area of ​​cultivated land. With the continuous development of industry and agriculture, soil heavy metal pollution is still intensifying, especially in the process of mining, processing, transportation, use, and waste treatment. A large amount of heavy metals eventually flow in through various channels. caused serious pollution of the soil. The heavy metals in the soil enter the water body, plants and animals in active ion state, and then endanger the health of human and animals through the food chain. Therefore, the remediatio...

Claims

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Application Information

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IPC IPC(8): C09K17/40B09C1/08
CPCB09C1/08B09C2101/00C09K17/40
Inventor 卯志华
Owner CHANGSHA QIUDIANBING INFORMATION TECH CO LTD
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