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Heavy metal contaminated soil remediation agent and preparation method thereof

A technology for contaminated soil and heavy metals, applied in the field of soil remediation, can solve problems such as refractory degradation, difficult natural discharge or complete removal, and hazards, and achieve high repair efficiency, outstanding synergistic effect, and the effects of promoting absorption and passivation

Inactive Publication Date: 2018-11-23
山西华欣久泰科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Heavy metals are enriched and difficult to degrade in the environment. After entering the human body through the food chain, it is difficult to naturally excrete or completely remove them, causing harm to the human body.

Method used

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  • Heavy metal contaminated soil remediation agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: heavy metal polluted soil remediation agent is made through the following steps:

[0017] a. After fermenting 162 kg of pig manure, dry it, crush and grind it after drying, and control the particle size at 2-5mm;

[0018] B, 1.6 kilograms of sodium cocoyl sarcosinate and 8 kilograms of sodium cocoyl isethionate are all mixed with water and are the aqueous solution that concentration is 10.0g / L;

[0019] c. Calcining 56 kg of medical stone at 200-300°C for 2-4 hours, cooling and grinding into powder, then adding the aqueous solution of sodium cocoyl sarcosinate and cocoyl isethionate prepared in step b Sodium aqueous solution, mixed uniformly to obtain mixture A;

[0020] d, after drying the mixture A in step c, carry out crushing and grinding treatment, control the particle size to be 100 mesh, then add it to the pig manure in step a and mix uniformly to obtain mixture B;

[0021] E, 9.4 kilograms of composite bacterial agents are added to the mixture B ...

Embodiment 2

[0022] Embodiment 2: Heavy metal polluted soil remediation agent is made through the following steps:

[0023] a. After fermenting 188 kg of pig manure, dry it, crush and grind it after drying, and control the particle size at 2-5mm;

[0024] B, 7.4 kilograms of sodium cocoyl sarcosinate and 6.8 kilograms of sodium cocoyl isethionate are all mixed with water and are the aqueous solution that concentration is 10.0g / L;

[0025] c. Calcining 64 kg of medical stone at 200-300°C for 2-4 hours, cooling and grinding into powder, then adding the aqueous solution of sodium cocoyl sarcosinate and cocoyl isethionate prepared in step b Sodium aqueous solution, mixed uniformly to obtain mixture A;

[0026] d, after drying the mixture A in step c, carry out crushing and grinding treatment, control the particle size to be 100 mesh, then add it to the pig manure in step a and mix uniformly to obtain mixture B;

[0027] e. Add 11.0 kilograms of composite bacterial agent to the mixture B of s...

Embodiment 3

[0028] Embodiment 3: Heavy metal polluted soil remediation agent is made through the following steps:

[0029] a. After fermenting 200 kg of pig manure, dry it, crush and grind it after drying, and control the particle size at 2-5mm;

[0030] B, 8.8 kilograms of sodium cocoyl sarcosinate and 2.4 kilograms of sodium cocoyl isethionate are all mixed with water and are the aqueous solution that concentration is 10.0g / L;

[0031] c. Calcining 86 kg of medical stone at 200-300°C for 2-4 hours, cooling and grinding into powder, then adding the aqueous solution of sodium cocoyl sarcosinate and cocoyl isethionate prepared in step b Sodium aqueous solution, mixed uniformly to obtain mixture A;

[0032] d, after drying the mixture A in step c, carry out crushing and grinding treatment, control the particle size to be 100 mesh, then add it to the pig manure in step a and mix uniformly to obtain mixture B;

[0033] E, 12.2 kilograms of composite bacterial agents are added to the mixture...

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PUM

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Abstract

The invention relates to a heavy metal contaminated soil remediation agent. The heavy metal contaminated soil remediation agent is prepared from the following raw materials in parts by weight: 4-7 parts of a compound microbial agent, 0.5-4.5 parts of sodium cocoyl sarcosinate, 0.5-4.5 parts of sodium cocoyl isethionate, 80-100 parts of pig manure and 25-45 parts of medical stone. The heavy metal contaminated soil remediation agent is high in remediation efficiency and has good adsorption and passivation effects on heavy metal cadmium, the synergistic action of the components is outstanding, and mixed micro powder of the compound microbial agent, the medical stone and the pig manure forms an adsorption and biochemical reaction promoting system which can obviously promote cadmium absorptionand passivation of the compound microbial agent.

Description

technical field [0001] The invention belongs to the field of soil remediation, and in particular relates to a heavy metal polluted soil remediation agent and a preparation method thereof. Background technique [0002] With the development of modern industrialization and urbanization, human activities have led to increasingly serious heavy metal pollution in the soil environment. Heavy metals are enriched and difficult to degrade in the environment. After entering the human body through the food chain, it is difficult to naturally excrete or completely remove them, causing harm to the human body. Heavy metal pollution in soil, especially cadmium pollution, has become a prominent environmental problem that needs to be solved urgently. Cadmium (Cd) is one of the most toxic heavy metal elements in nature due to its strong mobility, high toxicity, and easy absorption and accumulation by crops. Contents of the invention [0003] The purpose of the present invention is to solve...

Claims

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Application Information

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IPC IPC(8): C09K17/40B09C1/08B09C1/10
CPCB09C1/08B09C1/105C09K17/40
Inventor 朱明慧
Owner 山西华欣久泰科技有限公司
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