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Heavy metal contaminated soil remediation method and remediation agent

A soil remediation agent and a technology for polluted soil, which is applied in the field of heavy metal-contaminated soil remediation methods and remediation agents, and can solve problems such as poor repair methods and inconvenient operation

Inactive Publication Date: 2021-02-19
冯家胜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to overcome the poor effect and inconvenient operation of the existing repair methods, and provide a repair method for heavy metal contaminated soil and its repair agent

Method used

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  • Heavy metal contaminated soil remediation method and remediation agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for remediating heavy metal contaminated soil, comprising the steps of:

[0032] (1) Prepare soil remediation agent:

[0033] a. After cleaning the straw, put it into the steam explosion tank for steam explosion treatment, and take it out for later use;

[0034] b. Immerse the stalks treated in operation a into the composite solution A, and filter out after stirring continuously for 45 minutes, and then dry them for later use;

[0035] c. Mix the montmorillonite and the stalks treated in operation b together, then add potassium hydroxide solution, continue grinding for 3 hours, filter out, and finally obtain the mixed powder I after roasting treatment;

[0036] d. Rinse the mixed powder I obtained in step c with deionized water, and obtain the mixed powder II after washing until neutral;

[0037] e. Put the mixed powder II, gelatin, chitosan, starch, and water obtained in step b into a mixing tank, take out after stirring for 5 hours, and then pulverize throu...

Embodiment 2

[0046] A method for remediating heavy metal contaminated soil, comprising the steps of:

[0047] (1) Prepare soil remediation agent:

[0048] a. After cleaning the straw, put it into the steam explosion tank for steam explosion treatment, and take it out for later use;

[0049] b. Immerse the stalks treated in operation a into the composite liquid A, and filter out after stirring continuously for 50 minutes, and then dry them for later use;

[0050] c. Mix the montmorillonite and the straw treated in operation b together, then add potassium hydroxide solution, continue grinding for 3.6 hours, filter out, and finally obtain the mixed powder I after roasting treatment;

[0051] d. Rinse the mixed powder I obtained in step c with deionized water, and obtain the mixed powder II after washing until neutral;

[0052] e. Put the mixed powder II, gelatin, chitosan, starch and water obtained in step b into the mixing tank, take it out after stirring for 6 hours, and then pulverize th...

Embodiment 3

[0061] A method for remediating heavy metal contaminated soil, comprising the steps of:

[0062] (1) Prepare soil remediation agent:

[0063] a. After cleaning the straw, put it into the steam explosion tank for steam explosion treatment, and take it out for later use;

[0064] b. Immerse the stalks treated in operation a into the compound liquid A, and filter out after stirring continuously for 55 minutes, and then dry them for later use;

[0065] c. Mix the montmorillonite and the stalks treated in operation b together, then add potassium hydroxide solution, keep grinding for 4 hours, filter out, and finally get the mixed powder I after roasting for later use;

[0066] d. Rinse the mixed powder I obtained in step c with deionized water, and obtain the mixed powder II after washing until neutral;

[0067] e. Put the mixed powder II, gelatin, chitosan, starch and water obtained in step b into the mixing tank, take it out after stirring for 7 hours, and then pulverize through...

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Abstract

The invention belongs to the technical field of soil remediation, and particularly relates to a heavy metal contaminated soil remediation method which comprises the following steps of: (1) preparing asoil remediation agent; and (2) spraying the soil remediation agent for remediation. The method is simple in overall process and easy to apply and popularize, the prepared soil remediation agent is good in using effect, environmentally friendly and low in production cost, and remediation of heavy metal in soil can be effectively and rapidly achieved.

Description

technical field [0001] The invention belongs to the technical field of soil remediation, and more specifically relates to a method for remediating heavy metal-contaminated soil and a remediation agent thereof. Background technique [0002] Soil heavy metal pollution (heavy metal pollution of the soil) means that due to human activities, the content of trace metal elements in the soil in the soil exceeds the background value, and the excessive content caused by excessive deposition is collectively referred to as soil heavy metal pollution. However, heavy metal pollution in farmland soil is extremely harmful. Heavy metal pollution in soil will not only reduce crop yield and quality, but also enter the human body through the soil-plant system and the food chain, endangering human health and life safety. Soil heavy metal pollution has the characteristics of concealment, hazard lag, long-term nature, and bioaccumulation of heavy metals in the biological chain. These determine tha...

Claims

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Application Information

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IPC IPC(8): B09C1/08
CPCB09C1/08B09C2101/00
Inventor 冯家胜
Owner 冯家胜
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