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Heavy metal contaminated soil remediation agent and soil remediation method

A technology for polluted soil and heavy metals, applied in the field of soil remediation, can solve the problems of unsuitable large-scale polluted soil treatment, hidden dangers of secondary pollution, and high investment costs, achieve good pollution remediation effects, prevent heavy metal leaching, and promote chelation. Effect

Inactive Publication Date: 2020-05-19
CHENGDU TECHCAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing contaminated soil remediation technology has a large amount of engineering, high investment costs, hidden dangers of secondary pollution, and easy reactivation of heavy metals, which is not suitable for the treatment of large-scale contaminated soil.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A heavy metal-contaminated soil remediation agent provided by a preferred embodiment of the present invention includes, in parts by weight, 60 parts of treated activated carbon, 8 parts of zeolite, 15 parts of marl, 25 parts of wine waste liquid and 0.05 part of Azotobacter rotundum.

[0036] The preparation method of above-mentioned heavy metal polluted soil remediation agent, comprises the following steps:

[0037] S1. Add activated carbon to ammonia water, soak for 4 hours, filter, and process activated carbon;

[0038] S2. adding the treated activated carbon obtained in S1 into the glucose waste liquid to obtain the mixture A;

[0039] S3. mix the marl and zeolite, and stir evenly to obtain the mixture B;

[0040] S4. Mix the mixture A obtained in S2 and the mixture B obtained in S3 evenly, and leave it to stand to obtain the mixture C;

[0041] S5. Add Azotobacter rotundum into the mixture C, mix evenly, pulverize and granulate.

[0042] The method for soil reme...

Embodiment 2

[0044] A kind of heavy metal polluted soil remediation agent provided by the preferred embodiment of the present invention, comprises 70 parts of treated activated carbon, 5 parts of zeolite, 18 parts of marl, 23 parts of wine waste liquid and 0.06 part of Azotobacter rotundum in parts by weight.

[0045] The preparation method of above-mentioned heavy metal polluted soil remediation agent, comprises the following steps:

[0046] S1. Add activated carbon to ammonia water, soak for 4 hours, filter, and process activated carbon;

[0047] S2. adding the treated activated carbon obtained in S1 into the glucose waste liquid to obtain the mixture A;

[0048] S3. mix the marl and zeolite, and stir evenly to obtain the mixture B;

[0049] S4. Mix the mixture A obtained in S2 and the mixture B obtained in S3 evenly, and leave it to stand to obtain the mixture C;

[0050] S5. Add Azotobacter rotundum into the mixture C, mix evenly, pulverize and granulate.

[0051] The above-mentione...

Embodiment 3

[0053] A heavy metal-contaminated soil remediation agent provided by a preferred embodiment of the present invention comprises, in parts by weight, 65 parts of treated activated carbon, 8 parts of zeolite, 18 parts of marl, 28 parts of wine waste liquid and 0.07 part of Azotobacter rotundum.

[0054] The preparation method of above-mentioned heavy metal polluted soil remediation agent, comprises the following steps:

[0055] S1. Add activated carbon to ammonia water, soak for 4 hours, filter, and process activated carbon;

[0056] S2. adding the treated activated carbon obtained in S1 into the glucose waste liquid to obtain the mixture A;

[0057] S3. mix the marl and zeolite, and stir evenly to obtain the mixture B;

[0058] S4. Mix the mixture A obtained in S2 and the mixture B obtained in S3 evenly, and leave it to stand to obtain the mixture C;

[0059] S5. Add Azotobacter rotundum into the mixture C, mix evenly, pulverize and granulate.

[0060] The method for soil resto...

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PUM

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Abstract

The invention discloses a heavy metal contaminated soil remediation agent and a soil remediation method. The remediation agent comprises the following components in parts by weight: 50-80 parts of treated activated carbon, 3-10 parts of zeolite, 10-20 parts of marl, 20-30 parts of grape wine waste liquid and 0.05-1 part of azotobacter chroococcum. The remediation agent disclosed by the invention utilizes the grape wine waste liquid, is environment-friendly and economic, can remarkably remediate heavy metal pollution in soil, does not generate secondary pollution, and is simple in operation process, short in period and quick in effect.

Description

technical field [0001] The invention belongs to the technical field of soil remediation, and in particular relates to a heavy metal polluted soil remediation agent and a soil remediation method. Background technique [0002] With the growth of population and the acceleration of industrialization, the pollution of industrial wastes, chemical fertilizers and pesticides is becoming more and more serious, and the quality of farmland soil is degrading day by day. Soil pollution has become one of the main problems that endanger the quality of the global environment and the survival and development of human beings. According to the survey results of soil pollution in my country, the rate of over-standard soil points in cultivated land is close to 20%, and more than 80% of the over-standard points are heavy metals. Soil heavy metal pollution has aroused the concern and attention of the whole society. [0003] Heavy metal pollution refers to environmental pollution caused by heavy m...

Claims

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Application Information

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IPC IPC(8): C09K17/40A01B79/02C09K101/00
CPCA01B79/02C09K17/40C09K2101/00
Inventor 高进长陈佼肖秀婵李强林任燕玲王新月
Owner CHENGDU TECHCAL UNIV
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