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Heavy metal contaminated acidic soil remediation agent, and preparation method and application method thereof

An acid soil and heavy metal technology, applied in soil conditioning materials, chemical instruments and methods, applications, etc., can solve problems such as soil permeability, water retention, arable change, soil acidification or alkalization, accelerated organic matter, etc. Good repair effect, short repair time, cost saving effect

Inactive Publication Date: 2016-03-02
JIANGSU GAIYA ENVIRONMENTAL SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Because the soil is easily polluted by chemicals, if chemical fertilizers are used unreasonably, the consumption of organic matter will be accelerated, causing changes in soil air permeability, water retention, and arableness, and long-term use of chemical fertilizers will easily cause changes in soil pH, resulting in soil pollution. Acidification or alkalization, how to remediate the polluted soil accordingly to prevent soil degradation from affecting cultivation

Method used

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  • Heavy metal contaminated acidic soil remediation agent, and preparation method and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Weigh 20kg of fly ash, 20kg of bentonite, 18kg of nano-hydroxyapatite, 4kg of magnesium aluminosilicate, 2kg of potassium fluozirconate, 1kg of sodium metasilicate and 0.8kg of sodium dithionite, and mix them evenly at 50°C ;

[0032] (2) Add 3 kg of basic sodium aluminum carbonate and 1 kg of coal gangue, and stir for 5 minutes at a stirring rate of 200 rpm to obtain a heavy metal-contaminated acidic soil remediation agent.

[0033] The performance test results of the prepared heavy metal contaminated acidic soil remediation agent are shown in Table 1.

Embodiment 2

[0035] (1) Weigh 20kg of fly ash, 20kg of bentonite, 18kg of nano-hydroxyapatite, 4kg of magnesium aluminosilicate, 2kg of potassium fluozirconate, 1kg of sodium metasilicate and 0.8kg of sodium dithionite, and mix them evenly at 50°C ;

[0036] (2) Add 3 kg of basic sodium aluminum carbonate, 1 kg of coal gangue and 2 kg of kaolin, and stir for 5 minutes at a stirring rate of 200 rpm to obtain a heavy metal-contaminated acidic soil remediation agent.

[0037] The performance test results of the prepared heavy metal contaminated acidic soil remediation agent are shown in Table 1.

Embodiment 3

[0039] (1) Weigh 30kg of fly ash, 28kg of bentonite, 25kg of nano-hydroxyapatite, 9kg of magnesium aluminosilicate, 3kg of potassium fluozirconate, 2kg of sodium metasilicate and 2kg of sodium dithionite, and mix them evenly at 65°C;

[0040] (2) Add 6 kg of basic sodium aluminum carbonate, 2 kg of coal gangue and 2 kg of kaolin, and stir for 15 minutes at a stirring rate of 100 rpm to obtain a heavy metal-contaminated acidic soil remediation agent.

[0041] The performance test results of the prepared heavy metal contaminated acidic soil remediation agent are shown in Table 1.

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Abstract

The invention discloses a heavy metal contaminated acidic soil remediation agent, and a preparation method and an application method thereof. The heavy metal contaminated acidic soil remediation agent contains the following materials by weight: 20-30 parts of fly ash, 20-28 parts of bentonite, 18-25 parts of hydroxyapatite, 4-9 parts of magnesium aluminosilicate, 3-6 parts of sodium aluminum carbonate, basic, 2-3 parts of zirconium potassium fluoride, 1-2 parts of sodium metasilicate, 1-2 parts of coal gangue, and 0.8-2 parts of sodium dithionite. The present invention also provides a preparation method of the heavy metal contaminated acidic soil remediation agent.

Description

technical field [0001] The invention belongs to the field of soil remediation agents, and in particular relates to a heavy metal-polluted acidic soil remediation agent, a preparation method and a use method. Background technique [0002] Because the soil is easily polluted by chemicals, if chemical fertilizers are used unreasonably, the consumption of organic matter will be accelerated, causing changes in soil air permeability, water retention, and arableness, and long-term use of chemical fertilizers will easily cause changes in soil pH, resulting in soil pollution. Acidification or alkalization, how to remediate the polluted soil to prevent soil degradation from affecting cultivation. [0003] Soil remediation is a technique to restore contaminated soil to normal functions. There are many existing soil remediation technologies, which can be divided into three categories: physical, chemical and biological. Soil remediation mainly refers to the use of physical, chemical and...

Claims

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Application Information

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IPC IPC(8): C09K17/12
CPCC09K17/12
Inventor 程功弼仲英豪
Owner JIANGSU GAIYA ENVIRONMENTAL SCI & TECH CO LTD
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