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A kind of medicament for remediation of polluted soil and preparation method thereof

A technology of contaminated soil and chemicals, applied in the field of soil treatment, can solve the problems of single chemical agents and poor remediation effect of contaminated soil, and achieve the effects of shortening remediation time, reducing migration and bioavailability

Active Publication Date: 2021-02-02
SHANDONG LYUZHIXING ENVIRONMENT ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing agents for soil remediation all use a single chemical agent or microbial agent, which has poor remediation effect on contaminated soil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In terms of parts by weight, the agent used for remediation of contaminated soil in the first embodiment is made of 52 parts of microbial agent and 60 parts of chemical agent. Among them, the microbial agent consists of 4 parts of indigenous microorganisms, 10 parts of nitrifying bacteria, 15 parts of denitrifying bacteria, 5 parts of phosphorus accumulating bacteria, 10 parts of yeast, and 8 parts of lactic acid bacteria; the chemical agent consists of 40 parts of heavy metal deactivator and 20 parts of The heavy metal deactivator is composed of 20 parts of peat soil and 20 parts of attapulgite, and the curing agent is composed of 5 parts of calcium nitrate, 10 parts of calcium carbonate and 5 parts of polyferric sulfate.

[0030] The specific preparation method for contaminated soil remediation medicament in this embodiment one comprises the following steps:

[0031] Step (1), preparation of microbial inoculum:

[0032] ❶ Inoculate 4 copies of indigenous microorganis...

Embodiment 2

[0045] In terms of parts by weight, the agent used for remediation of contaminated soil in Example 2 is made from 60 parts of microbial agent and 40 parts of chemical agent. Among them, the microbial agent consists of 10 parts of indigenous microorganisms, 15 parts of nitrifying bacteria, 10 parts of denitrifying bacteria, 8 parts of phosphorus accumulating bacteria, 10 parts of yeast, and 7 parts of lactic acid bacteria; the chemical agent consists of 20 parts of heavy metal passivation agent and 20 parts of The heavy metal deactivator is composed of 10 parts of peat soil and 10 parts of attapulgite, and the curing agent is composed of 8 parts of calcium nitrate, 5 parts of calcium carbonate and 7 parts of polyferric sulfate.

[0046] The specific preparation method for contaminated soil remediation medicament in this embodiment two comprises the following steps:

[0047] Step (1), preparation of microbial inoculum:

[0048] ❶Inoculate 10 copies of indigenous microorganisms ...

Embodiment 3

[0061] In parts by weight, the medicament used for remediation of contaminated soil in Example 3 is made from 50 parts of microbial agent and 50 parts of chemical medicament. Among them, the microbial agent consists of 10 parts of indigenous microorganisms, 10 parts of nitrifying bacteria, 10 parts of denitrifying bacteria, 5 parts of phosphorus accumulating bacteria, 10 parts of yeast, and 5 parts of lactic acid bacteria; the chemical agent consists of 20 parts of heavy metal deactivators and 30 parts of The heavy metal deactivator is composed of 10 parts of peat soil and 10 parts of attapulgite, and the curing agent is composed of 10 parts of calcium nitrate, 15 parts of calcium carbonate and 5 parts of polyferric sulfate. The specific preparation method is as follows:

[0062] The specific preparation method for contaminated soil remediation agent in this embodiment three comprises the following steps:

[0063] Step (1), preparation of microbial inoculum:

[0064] ❶Inocul...

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Abstract

The invention discloses a medicament for remediating polluted soil and a preparation method thereof. The present invention consists of 5 to 100 parts of microbial agents and 1 to 200 parts of chemical agents in parts by weight; microbial agents include indigenous microbial cultures, nitrifying bacteria cultures, denitrifying bacteria cultures, and phosphorus accumulating bacteria The weight ratio of the culture of bacteria, yeast culture, lactic acid bacteria, indigenous microorganism culture, nitrifying bacteria culture, denitrifying bacteria culture, phosphorus accumulating bacteria culture, yeast culture, and lactic acid bacteria culture is 5 to 10: 10~15: 10~15: 5~10: 10~15, 5~10; chemical agents include heavy metal deactivator and curing agent, the weight ratio of heavy metal deactivator and curing agent is 1‑30: 3‑170 . The invention adopts the combined physical-chemical-biological treatment technology to treat the polluted soil, and the invention has a good restoration effect on the polluted soil.

Description

technical field [0001] The invention relates to the technical field of soil treatment, in particular to a medicament for remediation of polluted soil and a preparation method thereof. Background technique [0002] Soil pollution has become a global environmental pollution problem. In recent years, the situation of soil pollution in my country has been very serious: a large area of ​​cultivated land in the country has been polluted by heavy metals and pesticides, seriously threatening the quality and safety of the country's "rice bags" and "vegetable baskets". Commonly used contaminated soil remediation techniques can be roughly divided into ex-situ remediation techniques and in-situ remediation techniques. Whether it is in-situ remediation or ex-situ remediation of polluted soil, in essence, the technical principles of contaminated soil remediation are: (1) Change the existing form of pollutants in the soil or the way they combine with the soil to reduce their pollution in t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/40C12N1/16C12N1/20C12R1/01C12R1/645C09K101/00
CPCC09K17/40C09K2101/00C12N1/16C12N1/20
Inventor 杨庆宾赵建军李秀芝时春华杨雪张忠伟徐展
Owner SHANDONG LYUZHIXING ENVIRONMENT ENG CO LTD
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