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Soil conditioner for heavy metal pollution and preparation method thereof

A technology that pollutes soil and heavy metals, applied in the application, organic fertilizer, inorganic fertilizer and other directions, can solve the problems of high transportation cost and application cost, unsatisfactory repair effect, unacceptable to farmers, etc., to increase water permeability and reduce the activity of heavy metals. , the effect of improving soil fertility

Inactive Publication Date: 2018-09-28
合肥卓畅农业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the above soil conditioners are applied to heavy metal-contaminated soil, the remediation effect is not ideal, and the heavy metal content in crops is still high, and a large amount of application is required at one time, generally 2250-4500kg / hm 2 , transportation cost and application cost are high, farmers are not easy to accept it, and it is difficult to promote it on a large scale

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The soil conditioner for reducing heavy metal activity in soil of the present embodiment is composed of modified zeolite powder, silicate, biochar, sepiolite mineral powder, organic fertilizer and heavy metal adsorbent;

[0034] The modified zeolite powder, silicate, biochar, sepiolite mineral powder, organic fertilizer and heavy metal adsorbent are in parts by weight: 3 parts of modified zeolite powder, 15 parts of silicate, 1 part of biochar, 20 parts of sepiolite mineral powder, 2 parts of organic fertilizer, 0.5 part of heavy metal adsorbent.

[0035] The modified zeolite powder is a product obtained after the modified zeolite powder is purified by natural talc, acidified, and then thermally activated.

[0036]Wherein, the preparation method of the modified zeolite powder:

[0037] (1) Take the natural zeolite to pulverize and pass through a 100-mesh sieve, add water, stir to form a suspended slurry, take the upper suspension and centrifuge it in a centrifuge at 20...

Embodiment 2

[0051] The soil conditioner for reducing heavy metal activity in soil of the present embodiment is composed of modified zeolite powder, silicate, biochar, sepiolite mineral powder, organic fertilizer and heavy metal adsorbent;

[0052] The modified zeolite powder, silicate, biochar, sepiolite mineral powder, organic fertilizer and heavy metal adsorbent are in parts by weight: 7 parts of modified zeolite powder, 45 parts of silicate, 5 parts of biochar, 40 parts of sepiolite mineral powder, 8 parts of organic fertilizer, 3 parts of heavy metal adsorbent.

[0053] The modified zeolite powder is a product obtained after the modified zeolite powder is purified by natural talc, acidified, and then thermally activated.

[0054] Wherein, the preparation method of the modified zeolite powder:

[0055] (1) Take the natural zeolite to pulverize and pass through a 100-mesh sieve, add water, stir to form a suspended slurry, take the upper suspension and centrifuge it in a centrifuge at 2...

Embodiment 3

[0069] The soil conditioner for reducing heavy metal activity in soil of the present embodiment is composed of modified zeolite powder, silicate, biochar, sepiolite mineral powder, organic fertilizer and heavy metal adsorbent;

[0070] The modified zeolite powder, silicate, biochar, sepiolite mineral powder, organic fertilizer and heavy metal adsorbent are in parts by weight: 5.5 parts of modified zeolite powder, 30 parts of silicate, 3 parts of biochar, 30 parts of sepiolite mineral powder, 5 parts of organic fertilizer, 1.8 parts of heavy metal adsorbent.

[0071] The modified zeolite powder is a product obtained after the modified zeolite powder is purified by natural talc, acidified, and then thermally activated.

[0072] Wherein, the preparation method of the modified zeolite powder:

[0073] (1) Take the natural zeolite to pulverize and pass through a 100-mesh sieve, add water, stir to form a suspended slurry, take the upper suspension and centrifuge it in a centrifuge ...

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Abstract

The invention discloses a soil conditioner for heavy metal pollution and a preparation method thereof. The soil conditioner is composed of modified zeolite powder, silicate, biochar, sepiolite ore powder, organic fertilizer and heavy metal adsorbent. The weight parts of the modified zeolite powder, silicate, biochar, sepiolite ore powder, organic fertilizer and heavy metal adsorbent are as follows: 3 to 7 parts of modified zeolite powder, 15 to 45 parts of silicate, 1 to 5 parts of biochar, 20 to 40 parts of sepiolite ore powder, 2 to 8 parts of organic fertilizer and 0.5 to 3 parts of heavy metal adsorbent. The soil conditioner can effectively reduce the heavy metal activity of the acid heavy metal polluted soil, has low cost, is easy to implement, and is green and environment-friendly.

Description

technical field [0001] The invention relates to the technical field of soil improvement, in particular to a heavy metal polluted soil conditioner and a preparation method thereof. Background technique [0002] With the rapid development of industry and the continuous increase of agricultural input intensity, a large number of heavy metals and other pollutants have entered the soil environment, which has caused heavy metal pollution in soil and has become a worldwide problem that has been widely concerned. According to reports, the cultivated land area polluted by cadmium, mercury, arsenic, chromium and lead in my country is nearly 20 million hm 3 , accounting for about 20% of the country's total arable land, has seriously affected the development of modern agriculture and social stability. [0003] The pollution of heavy metals in the soil directly leads to excessive heavy metal content in agricultural products, and then enters the human body through the food chain and pose...

Claims

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Application Information

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IPC IPC(8): C05G3/04C05G3/80
CPCC05D1/00C05G3/80C05D3/00C05D5/00C05D9/00C05F3/00
Inventor 解正来
Owner 合肥卓畅农业科技有限公司
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