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Mercury-polluted soil conditioner

A soil conditioner and mercury-polluted technology, applied in the field of soil remediation, can solve the problem of low treatment efficiency and achieve the effect of reducing mercury content

Inactive Publication Date: 2017-05-31
ZHENGZHOU BEIDOU COMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the existing chemical passivation materials are used to deal with mercury pollution, there is a problem of low treatment efficiency

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0020] In the embodiment of the present invention, a mercury-contaminated soil improver is composed of the following raw materials in terms of parts by mass: 8 parts of Daffodil, 6 parts of Chlorella, 30 parts of diopside, and 18 parts of Pistacia chinensis.

[0021] The preparation method of described mercury-contaminated soil amendment comprises the following steps:

[0022] (1) Diopside is first pulverized to 20 meshes, and then ultrafinely pulverized to 8 μm to obtain diopside micropowder;

[0023] (2) respectively drying Pistacia chinensis, Daffodil and Chlorella, and pulverizing them to 80 meshes to obtain Coptis chinensis powder, Daffodil powder and Chlorella powder;

[0024] (3) Pour the pistachio powder into water 5 times its mass and soak for 2 hours, then heat it to 67°C, under this temperature condition, treat it with an ultrasonic wave with a power of 380W and a frequency of 36kHz for 45min, and filter to obtain the extract of pistachio Liquor and pistachio slag,...

Embodiment 2

[0029] In the embodiment of the present invention, a mercury-contaminated soil improver is composed of the following raw materials in terms of parts by mass: 12 parts of Daffodil, 9 parts of Chlorella, 25 parts of diopside, and 14 parts of Pistacia chinensis.

[0030] The preparation method of described mercury-contaminated soil amendment comprises the following steps:

[0031] (1) Diopside is first pulverized to 40 meshes, and then ultrafinely pulverized to 10 μm to obtain diopside micropowder;

[0032] (2) respectively drying Pistacia chinensis, Daffodil and Chlorella, and pulverizing them to 120 meshes to obtain Coptis chinensis powder, Daffodil powder and Chlorella powder;

[0033] (3) Pour the pistachio powder into water six times its mass and soak for 3 hours, then heat it to 70°C. Under this temperature condition, treat it with an ultrasonic wave with a power of 400W and a frequency of 38kHz for 50 minutes, and filter to obtain the extract of pistachio Liquid and pista...

Embodiment 3

[0038] In the embodiment of the present invention, a mercury-contaminated soil improver is composed of the following raw materials in terms of parts by mass: 9 parts of Daffodil, 6.75 parts of Chlorella, 28 parts of diopside, and 17 parts of Pistacia chinensis.

[0039] The preparation method of described mercury-contaminated soil amendment comprises the following steps:

[0040] (1) Diopside is first pulverized to 20 meshes, and then ultrafinely pulverized to 10 μm to obtain diopside micropowder;

[0041] (2) respectively drying Pistacia chinensis, Daffodil and Chlorella, and pulverizing them to 80 meshes to obtain Coptis chinensis powder, Daffodil powder and Chlorella powder;

[0042] (3) Pour the pistachio powder into water six times its mass and soak for 2 hours, then heat it to 70°C. Under this temperature condition, treat it with ultrasonic waves with a power of 380W and a frequency of 38kHz for 45 minutes, and filter to obtain the extract of pistachio Liquid and pistac...

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Abstract

The invention discloses a mercury-polluted soil conditioner; the conditioner is prepared from, by mass, 8-12 parts of cleome gynandra, 6-9 parts of chlorococcum, 25-30 parts of diopside, 14-18 parts of pistacia lentiscus, wherein the mass ratio of the cleome gynandra and chlorococcum is 4: 3; the conditioner is prepared by crushing diopside to diopside micropowder; respectively drying and crushing pistacia lentiscus, cleome gynandra and chlorococcum to be powder; pouring pistacia lentiscus powder in water and immersing; performing the hot ultrasound wave treatment, filtering and acquiring the pistacia lentiscus extractive fluid and pistacia lentiscus slag; depressurizing and concentrating the pistacia lentiscus extractive fluid to the pistacia lentiscus concentrated liquor; calcining the pistacia lentiscus slag and acquiring the carbonized pistacia lentiscus slag; mixing the pistacia lentiscus concentrated liquid with diopside micrpowder, cleome gynandra powder, and chlorococcum powder; acquiring the mixed pulp; immersing the carbonized pistacia lentiscus slag in a mixed pulp; heating and performing ultrasound coating, and drying the carbonized pistacia lentiscus slag. The conditioner can significantly reduce the effective state mercury and iron and manganese oxidation state mercury content in the soil.

Description

technical field [0001] The invention relates to the technical field of soil remediation, in particular to a mercury-polluted soil improver. Background technique [0002] Mercury is a non-essential toxic heavy metal that is ubiquitous in the environment. According to reports, my country's annual discharge of mercury into the environment due to industrial and agricultural production reaches 1.9×10 5 tons, causing a large area of ​​cultivated land to be polluted by mercury. After mercury enters the soil, it directly threatens the quality and safety of crops. According to the continuous chemical extraction method, mercury in soil can be divided into dissolved state and exchangeable state, special adsorption state, iron and manganese oxidation state, organic binding state and residue state. The absorption capacity of crops to different forms of mercury in the soil is different. In general, the dissolved form, exchangeable form and special adsorption form have high effectiveness...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40B09C1/08
CPCC09K17/40B09C1/08B09C2101/00
Inventor 不公告发明人
Owner ZHENGZHOU BEIDOU COMM TECH
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