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Contaminated soil-based soil conditioner and preparation method thereof

A soil conditioner and a technology for polluted soil, applied in the field of soil conditioner based on polluted soil and its preparation, can solve the problems of poor improvement effect and slow effect, and achieve the effects of improving fertility, quick effect and simple material selection.

Inactive Publication Date: 2021-01-12
浙江和宸环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, red mud and slaked lime are mostly used as amendments for soil pollution, especially heavy metal pollution, which mainly have disadvantages such as poor improvement effect and slow effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The present embodiment provides a soil conditioner based on polluted soil, comprising the following components in parts by weight: 60 parts of plant ash, 70 parts of quicklime, 50 parts of organic fertilizer, 45 parts of calcium magnesium phosphate fertilizer, 35 parts of zeolite, composite microbial bacterial agent 6 parts, 0.6 parts of biochar, and 1.3 parts of urea.

[0028] The preparation method of the soil conditioner based on polluted soil comprises the following steps: (1) mixing and drying 35 parts of zeolite, 60 parts of plant ash, 70 parts of quicklime and 0.6 part of biochar; (2) grinding to obtain a powdery mixture; ( 3) Add 45 parts of calcium magnesium phosphate fertilizer to the powdery mixture prepared in step (2); (4) Add 6 parts of composite microbial bacterial agent and 1.3 parts of urea to obtain a finished product.

Embodiment 2

[0030] The present embodiment provides a soil conditioner based on polluted soil, comprising the following components in parts by weight: 70 parts of plant ash, 80 parts of quicklime, 60 parts of organic fertilizer, 55 parts of calcium magnesium phosphate fertilizer, 45 parts of zeolite, compound microbial bacterial agent 7 parts, 0.7 parts of biochar, and 1.5 parts of urea.

[0031] The preparation method of the soil conditioner based on polluted soil comprises the following steps: (1) mixing and drying 45 parts of zeolite, 70 parts of plant ash, 80 parts of quicklime and 0.7 part of biochar; (2) grinding to obtain a powdery mixture; ( 3) Add 55 parts of calcium magnesium phosphate fertilizer to the powdery mixture prepared in step (2); (4) Add 7 parts of composite microbial agent and 1.5 parts of urea to obtain a finished product.

Embodiment 3

[0033] The present embodiment provides a soil conditioner based on polluted soil, comprising the following components in parts by weight: 80 parts of plant ash, 90 parts of quicklime, 75 parts of organic fertilizer, 60 parts of calcium magnesium phosphate fertilizer, 50 parts of zeolite, composite microbial bacterial agent 8 parts, 0.8 parts of biochar, and 1.6 parts of urea.

[0034] The preparation method of the soil conditioner based on polluted soil comprises the following steps: (1) mixing and drying 50 parts of zeolite, 80 parts of plant ash, 90 parts of quicklime and 0.8 part of biochar; (2) grinding to obtain a powdery mixture; ( 3) Add 60 parts of calcium magnesium phosphate fertilizer to the powdery mixture prepared in step (2); (4) Add 8 parts of composite microbial agent and 1.6 parts of urea to obtain a finished product.

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Abstract

The invention belongs to the technical field of soil remediation, and provides a contaminated soil-based soil conditioner which comprises the following components in parts by weight: 50-100 parts of plant ash, 50-100 parts of quick lime, 30-80 parts of an organic fertilizer, 40-70 parts of a calcium magnesium phosphate fertilizer, 20-60 parts of zeolite, 5-10 parts of a compound microbial agent, 0.5-1 part of biomass charcoal and 1-2 parts of urea. The contaminated soil-based soil conditioner integrates plant ash, quick lime, organic fertilizer, calcium magnesium phosphate, zeolite fertilizer,composite microbial agent, biomass charcoal and urea, not only is simple in material obtaining and low in cost, but also is good in remediation effect on heavy metal contaminated soil and quick in effect taking, and meanwhile, the soil fertility is improved.

Description

technical field [0001] The invention belongs to the technical field of soil remediation, and in particular relates to a soil conditioner based on polluted soil and a preparation method thereof. Background technique [0002] When the content of harmful substances in the soil is too much and exceeds the self-purification capacity of the soil, it will cause changes in the quality of the soil, resulting in soil pollution. Soil pollutants are mainly divided into two categories: inorganic pollutants and organic pollutants; among them, inorganic pollutants mainly include acids, alkalis, heavy metals, salts, compounds of radioactive elements cesium and strontium, compounds containing arsenic, selenium and fluorine, etc. Organic pollutants mainly include organic pesticides, phenols, cyanides, petroleum, synthetic detergents, and harmful microorganisms brought by urban sewage, sludge, and manure. The main risks of soil pollution are as follows: affecting the growth of crops and produ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C05G3/80
CPCC05B13/02C09K17/40C05G3/80C05C9/00C05D1/00C05D3/02C05D9/00C05F1/00C05F3/00C05F11/00
Inventor 李奇洛
Owner 浙江和宸环保科技有限公司
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