Soil arsenic-contaminated remediation agent

A remediation agent and technology for arsenic pollution, which is applied in the field of formulation of soil arsenic pollution remediation agents, can solve problems such as restricting the popularization and application of technology, unstable remediation effect, reducing soil fertility, etc., so as to shorten the reaction time, improve water retention and fertilizer retention, and improve ventilation. ability, the effect of improving the soil

Inactive Publication Date: 2016-12-21
广西汇泰环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One is engineering treatment, such as digging and replacing soil, but the implementation is complicated, the cost is high and the soil fertility is easy to be reduced
The second is chemical treatment, the effect and cost are moderate, the disadvantage is that it is easy to reactivate
The third is agricultural management, which is easy to operate and low in cost, but the cycle is long and the effect is not significant
However, although microbial remediation technology has attracted increasing attention, due to the difficulty in finding suitable strains, most of the reported microbial remediation methods have no significant effect, slow effect, and unstable repair effect, which limits the popularization and application of this technology.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The specific operation steps of the soil heavy metal remediation agent for soil remediation are as follows:

[0050] 1) Sampling and analysis of soil properties, types of pollutants and degree of pollution, to determine the specific formula of remediation agent;

[0051] 2) Collect the polluted soil, screen out impurities such as stones, glass, tiles, etc., and obtain pretreated soil with a water content of 20% after crushing;

[0052] 3) Put 1000kg of bentonite, 1000kg of diatomite, 1000kg of hydroxyapatite, 500kg of calcium magnesium phosphate fertilizer, 1000kg of silicon fertilizer as a stabilizer, 4500kg of organic material, and 1000kg of HT bacterial preparation as a biological agent. Put it into the container and mix well to make repair agent;

[0053] 4) According to the ratio of soil: repair agent = 1:0.06, fully mix the pretreated soil and repair agent to obtain the treated soil;

[0054] 5) Pile the treated soil on the sterilized cement floor and cover it w...

Embodiment 2

[0057] 1) Sampling and analysis of soil properties, types of pollutants and degree of pollution, to determine the specific formula of remediation agent;

[0058] 2) Collect the polluted soil, screen out impurities such as stones, glass, tiles, etc., and obtain pretreated soil with a water content of 50% after crushing;

[0059] 3) Put 4000kg of bentonite, 1000kg of diatomaceous earth, 1000kg of hydroxyapatite, 500kg of calcium magnesium phosphate fertilizer, 500kg of silicon fertilizer as a stabilizer, 2000kg of organic material, and 1000kg of HT bacterial preparation as a biological agent into the container After mixing to make repair agent;

[0060] 4) According to the ratio of soil: repair agent = 1:0.03, fully mix the pretreated soil and repair agent to obtain the treated soil;

[0061]5) Pile the treated soil on the sterilized cement floor and cover it with plastic film for curing, and keep it at room temperature for 35 days, so that the biochemical composite stabilizer ...

Embodiment 3

[0064] 1) Sampling and analysis of soil properties, types of pollutants and degree of pollution, to determine the specific formula of remediation agent;

[0065] 2) Collect the polluted soil, screen out impurities such as stones, glass, tiles, etc., and obtain pretreated soil with a water content of 30% after crushing;

[0066] 3) Put 1000kg of bentonite, 1000kg of diatomaceous earth, 2500kg of hydroxyapatite, 1000kg of calcium magnesium phosphate fertilizer, 1000kg of silicon fertilizer as a stabilizer, 2500kg of organic material, and 1000kg of HT bacterial preparation as a biological agent. Put it into the container and mix well to make repair agent;

[0067] 4) According to the ratio of soil: repair agent = 1:0.05, fully mix the pre-treated soil and repair agent to obtain the treated soil;

[0068] 5) Pile the treated soil on the sterilized cement floor and cover it with plastic film for curing, and keep it at room temperature for 20 days, so that the biochemical composite...

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PUM

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Abstract

The invention discloses a repairing agent for soil arsenic pollution. The repairing agent includes a stabilizer, an organic material, and an aqueous preparation made of biological bacteria preparations. The stabilizer includes bentonite, diatomaceous earth, hydroxyapatite, calcium and magnesium Phosphate fertilizer, powder made from silicon fertilizer, the biological bacteria preparation is made into a preparation of HT flora. The remediation agent made by chemical and biological methods can make the remediation soil environmental quality meet the requirements of the secondary standard value of China's "Soil Environmental Quality Standard" (GB15618-1995). Moreover, the components used in the chemical powder, the microorganism strains and the culture medium components required by the microorganisms are all cheap and easy to obtain, and the processing cost is low. In terms of operation, it is simple and convenient, and is convenient for popularization and implementation.

Description

technical field [0001] The invention belongs to the technical field of remediation of heavy metal soil pollution, and in particular relates to a formula of a soil arsenic pollution remediation agent and a method thereof. Background technique [0002] Heavy metals generally refer to about 60 elements with a specific gravity above 4.0 or about 45 elements with a specific gravity above 5.0. Heavy metals in environmental pollution research mainly refer to elements with significant biological toxicity such as Pb, Cd, Hg, Cr and metalloid As, and also include heavy metals such as Zn, Cu, Co, Ni and Sn with certain toxicity. Some heavy metal elements are essential elements for the human body and other organisms, but their concentration exceeds a certain range will cause poisoning. [0003] Heavy metal soil pollution refers to the phenomenon that human activities introduce heavy metals into the soil, causing the content of heavy metals in the soil to be significantly higher than th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/40C12N1/20B09C1/08B09C1/10C12R1/01C12R1/05
CPCC09K17/40B09C1/08B09C1/10C12N1/20
Inventor 梁茂林郑才彬柳正富
Owner 广西汇泰环保科技有限公司
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