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Curing agent for remediation of heavy metals in soil of Chinese herbal medicine planting area and method for remediation of compound heavy metal contaminated soil by using same

A technology for heavy metals and planting areas, applied in the field of soil pollution remediation, can solve the problems of single and incomplete curing effect and excessive heavy metal content, and achieve the effects of ideal curing effect, simple operation and low cost.

Inactive Publication Date: 2020-03-17
XINJIANG GUANGHEYUAN BIOTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is: the content of heavy metals in the soil in the planting area of ​​Chinese herbal medicine exceeds the standard, and the curing effect of a single curing agent on various heavy metals is single and incomplete. The method uses a single curing agent in combination to simultaneously cure two heavy metals Pb and Zn, which can enhance the curing effect of heavy metals Pb and Zn

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: A curing agent for repairing heavy metals in the soil of a Chinese herbal medicine planting area, mainly comprising the following raw materials in parts by weight: 10 parts of nano-calcium carbonate, 27 parts of corn biochar, 17 parts of calcium-based bentonite, 12 parts of potassium dihydrogen phosphate, silicon 27 parts of sodium phosphate and 12 parts of nano-hydroxyapatite, wherein, corn biochar refers to removing impurities from corn stalks, cleaning them, drying them, pulverizing them, and then carbonizing them at 400°C for 6 hours to obtain corn biochars.

[0035] The curing agent is prepared through the following steps:

[0036] a, take nano-calcium carbonate, corn biochar, calcium-based bentonite, potassium dihydrogen phosphate, sodium silicate and nano-hydroxyapatite according to the weight parts, and set aside;

[0037] b, the corn biochar, calcium-based bentonite, potassium dihydrogen phosphate and sodium silicate in the step (a) are pulverized...

Embodiment 2

[0038] Embodiment 2: A curing agent for repairing heavy metals in the soil of a Chinese herbal medicine planting area mainly includes the following raw materials in parts by weight: 14 parts of nano-calcium carbonate, 24 parts of corn biochar, 20 parts of calcium-based bentonite, 27 parts of potassium dihydrogen phosphate, silicon 15 parts of sodium phosphate and 18 parts of nano-hydroxyapatite, wherein, corn biochar refers to removing impurities from corn stalks, cleaning them, drying them, pulverizing them, and then carbonizing them at 440°C for 5.8 hours to obtain corn biochars.

[0039] The curing agent is prepared through the following steps:

[0040] a, take nano-calcium carbonate, corn biochar, calcium-based bentonite, potassium dihydrogen phosphate, sodium silicate and nano-hydroxyapatite according to the weight parts, and set aside;

[0041] b, the corn biochar, calcium-based bentonite, potassium dihydrogen phosphate and sodium silicate in the step (a) are pulverized ...

Embodiment 3

[0042] Embodiment 3: A curing agent for repairing heavy metals in the soil of a Chinese herbal medicine planting area mainly includes the following raw materials in parts by weight: 18 parts of nano-calcium carbonate, 21 parts of corn biochar, 23 parts of calcium-based bentonite, 15 parts of potassium dihydrogen phosphate, silicon 18 parts of sodium phosphate and 15 parts of nano-hydroxyapatite, wherein, corn biochar refers to removing impurities from corn stalks, cleaning them, drying them, pulverizing them, and then carbonizing them at 480°C for 5.6 hours to obtain corn biochars.

[0043] The curing agent is prepared through the following steps:

[0044] a, take nano-calcium carbonate, corn biochar, calcium-based bentonite, potassium dihydrogen phosphate, sodium silicate and nano-hydroxyapatite according to the weight parts, and set aside;

[0045] b, the corn biochar, calcium-based bentonite, potassium dihydrogen phosphate and sodium silicate in the step (a) are pulverized ...

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PUM

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Abstract

The invention discloses a curing agent for remediation of heavy metals in soil of a Chinese herbal medicine planting area. The curing agent mainly comprises the following raw materials in parts by weight: 10-27 parts of nano calcium carbonate, 12-27 parts of corn charcoal, 10-27 parts of calcium bentonite, 12-27 parts of monopotassium phosphate, 12-27 parts of sodium silicate and 12-27 parts of nano hydroxyapatite. Compared with the prior art, the compound curing agent is used for remediation of the Chinese herbal medicine heavy metal contaminated soil to achieve curing of Pb and Zn, is low incost, high in stability and simple to operate, has no influence on the secondary utilization of the soil, can be widely applied to remediation of heavy metal contaminated soil in a Chinese herbal medicine planting area, provides a good template for soil remediation, and provide a good solution for remediation of heavy metal contaminated soil, especially heavy metal contaminated soil in a Chineseherbal medicine planting area in China.

Description

technical field [0001] The invention relates to a curing agent for repairing heavy metals in soil in a Chinese herbal medicine planting area and a method thereof, in particular to a method for repairing composite heavy metal polluted soil with a composite curing agent, which belongs to the technical field of soil pollution restoration. Background technique [0002] The Chinese herbal medicine industry is an emerging industry with unique characteristics in my country. It has huge growth potential and will play a pivotal role in the adjustment of my country's industrial structure. Chinese herbal medicines are derived from natural materials, which can be divided into botanical medicines, animal medicines and mineral medicines according to their source. With the rise of global development and utilization of natural herbs, the demand for Chinese herbal medicines and their extracts is also increasing day by day, which has brought huge historical opportunities to the growth of the ...

Claims

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Application Information

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IPC IPC(8): C09K17/08B09C1/08B09C1/00C09K109/00C09K101/00
CPCB09C1/00B09C1/08C09K17/08C09K2101/00C09K2109/00
Inventor 吉海肖娴吉昕华孙硕赵利华赵远
Owner XINJIANG GUANGHEYUAN BIOTECH CO LTD