Method for remedying Cd-As-Cu heavy metal polluted soil

A technology that pollutes soil and heavy metals. It is applied in the field of soil remediation. It can solve the problems affecting the normal growth and metabolism of plants, copper toxicity, metabolism and endocrine disorders, etc., and achieve a good repair effect.

Active Publication Date: 2016-09-07
湖南科臣环境科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Copper is an indispensable micronutrient element for plant growth and human health, but excessive copper in the soil will affect the normal growth and metabolism of plants, endanger the absorption of nutrients by plants and reduce their yield
In addition, copper in the soil is very toxic to organisms. If a large amount of copper is enriched in the human body, it will harm the liver, gallbladder and other organs in the human body, and at the same time stimulate the human mucous membrane and central nervous system, and even cause metabolism and endocrine disorder, serious
[0004] The remediation function of the remediation technology about heavy metal contaminated soil in the prior art is single, and the remediation effect on cadmium, arsenic and copper contaminated soil is very different and the remediation effect needs to be further improved. Therefore, it is necessary to provide a kind of Remediation of copper-contaminated soil is simultaneously effective and effective

Method used

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  • Method for remedying Cd-As-Cu heavy metal polluted soil

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A method for remediating soil polluted by cadmium, arsenic and copper heavy metals, comprising the steps of:

[0026] Step 1: In parts by weight, mix 8 parts of hydrogen peroxide, 5 parts of oxysophocarpine, 2 parts of phosphoric acid, 4 parts of citric acid, 6 parts of palmitic acid, 3 parts of Tween 80, and 80 parts of deionized water to obtain the solution M ; Mix 8 parts of bismuth phosphate, 6 parts of sodium sulfite, 5 parts of ferrous oxide, 2 parts of hydroxypropyl methylcellulose, and 75 parts of deionized water to obtain solution N; mix 2 parts of bromelain and 4 parts of amylase , 3 parts of glucono-δ-lactone, and 65 parts of deionized water were mixed uniformly to obtain solution K;

[0027] Step 2: Break the polluted soil into pieces, control the temperature of the polluted soil at 60°C, keep it warm for 1 hour, then take the solution M at 0.3L / kg and cycle the polluted soil for 3 times for 10 minutes, collect the eluent and wash it Soil;

[0028] Step 3:...

Embodiment 2

[0032] A method for remediating soil polluted by cadmium, arsenic and copper heavy metals, comprising the steps of:

[0033] Step 1: In parts by weight, mix 18 parts of hydrogen peroxide, 12 parts of oxysophocarpine, 7 parts of phosphoric acid, 10 parts of citric acid, 13 parts of palmitic acid, 7 parts of Tween 80, and 120 parts of deionized water to obtain solution M ; Mix 14 parts of bismuth phosphate, 10 parts of sodium sulfite, 11 parts of ferrous oxide, 8 parts of hydroxypropyl methylcellulose, and 90 parts of deionized water to obtain solution N; mix 5 parts of bromelain and 9 parts of amylase , 7 parts of glucono-δ-lactone, and 80 parts of deionized water were mixed uniformly to obtain solution K;

[0034] Step 2: Break the polluted soil into pieces, control the temperature of the polluted soil at 80°C, keep it warm for 2 hours, then take solution M at 0.6L / kg and cycle the polluted soil for 5 times for 30 minutes, collect the eluent and wash it Soil;

[0035] Step 3...

Embodiment 3

[0039] A method for remediating soil polluted by cadmium, arsenic and copper heavy metals, comprising the steps of:

[0040] Step 1: In parts by weight, mix 13 parts of hydrogen peroxide, 8 parts of oxysophocarpine, 4 parts of phosphoric acid, 7 parts of citric acid, 10 parts of palmitic acid, 5 parts of Tween 80, and 100 parts of deionized water to obtain solution M ; Mix 11 parts of bismuth phosphate, 8 parts of sodium sulfite, 8 parts of ferrous oxide, 5 parts of hydroxypropyl methylcellulose, and 82 parts of deionized water to obtain solution N; 3.5 parts of bromelain, 6.5 parts of amylase , 5 parts of glucono-δ-lactone, and 72 parts of deionized water were mixed uniformly to obtain solution K;

[0041] Step 2: Break the polluted soil into pieces, control the temperature of the polluted soil to 70°C, keep it warm for 1.5 hours, then take solution M at 0.45L / kg and cycle the polluted soil for 4 times for 20 minutes, collect the eluate and wash it Soil;

[0042]Step 3: Tak...

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PUM

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Abstract

The invention provides a method for remedying Cd-As-Cu heavy metal polluted soil. The method comprises the following steps: step 1, uniformly mixing hydrogen peroxide, oxysophocarpine, phosphoric acid, citric acid, palmitic acid, Tween 80 and deionized water to obtain a solution M, uniformly mixing bismuth phosphate, sodium sulfite, ferrous oxide, hydroxypropyl methyl cellulose and deionized water to obtain a solution N, and uniformly mixing bromelain, amylase, glucono-delta-lactone and deionized water to obtain a solution K; step 2, pulverizing the polluted soil, and performing cyclic leaching on the pulverized polluted soil by adopting the solution M; step 3, adding the solution N into the leached soil for uniform mixing; step 4, adding the solution K for uniform mixing and step 5, adding calcium molybdate, calcium oxalate, silkworm shell powder, chicken manure and fly ash for uniform mixing, and performing conservation. According to the method provided by the invention, the remedying effect on the Cd-As-Cu heavy metal polluted soil and the market prospect are good.

Description

technical field [0001] The invention belongs to the technical field of soil remediation, and in particular relates to a method for remediating soil polluted by heavy metals such as cadmium, arsenic and copper. Background technique [0002] Soil is one of the basic elements of the human environment and the material basis for human survival, life and production. Soil pollution refers to the phenomenon that harmful substances discharged from human production and living activities enter the soil, directly or indirectly endangering the health of humans and animals. [0003] Soil heavy metal pollution has also become one of the serious environmental pollution problems. In the field of environmental pollution, heavy metals are usually defined as metal elements or metalloid elements that are obviously toxic to organisms, such as lead, zinc, copper, cadmium, arsenic, mercury, chromium, nickel, etc. These heavy metals will enter the human body through the food chain and accumulate i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/02
CPCB09C1/02
Inventor 彭孝茹
Owner 湖南科臣环境科技有限公司
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