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Method for repairing environmental hormone contaminated soil

A technology for polluted soil and environmental hormones, applied in the field of environmental hormone-contaminated soil remediation, can solve the problems of low efficiency of hormone technology, difficult to control operation, secondary pollution, etc., and achieve the effect of reducing secondary pollution, simple method and small environmental impact

Pending Publication Date: 2019-10-25
湖南飞润新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the technical deficiencies of the existing technology for treating hormones in soil, such as low efficiency, difficult operation, long time consumption, and secondary pollution, it provides an efficient, environmentally friendly and sustainable method for repairing environmental hormone-contaminated soil

Method used

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  • Method for repairing environmental hormone contaminated soil
  • Method for repairing environmental hormone contaminated soil
  • Method for repairing environmental hormone contaminated soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1 Preparation method of nanometer zero-valent iron.

[0032] S1. Preparation of electrolyte system: prepare ferrous sulfate solution with deionized water, so that the concentration of ferrous ion is 1mol / L, add povidone, thiourea and boric acid, so that the concentration in the electrolyte system is 0.5g respectively / L, 3g / L, 5g / L;

[0033] S2. Electrodeposition process: use industrial pure iron as the anode, stainless steel as the cathode, and the surface finish of the cathode material is ▽9, place it in the electrolyte system prepared in step S1, and electro-deposit under the action of the pulse field of the ultrasonic field and the alternating magnetic field After 3 hours of deposition, the electrodeposition temperature is 40°C, and a layer of uniform and fine black powder is obtained on the cathode plate, which is quickly detached under the action of an ultrasonic field;

[0034] Among them, the frequency of the ultrasonic field is 20KHz, the power is 3...

Embodiment 2

[0036] Embodiment 2 remediation method of environmental hormone polluted soil

[0037] S1. Preparation of iron slurry: Mix 20 parts of nano-zero-valent iron powder with 200 parts of deionized water, 1 part of sodium dodecylsulfonate, and 2 parts of bone glue, and stir to prepare nano-zero-valent iron slurry;

[0038] S2. Carrier treatment: Remove impurities from the uncontaminated soil, pass through an 80-mesh sieve, dry at 100°C until the moisture content of the soil particles is less than 5%, and crush it into soil particles with a uniform particle size and a particle size of less than 80 mesh, accounting for more than 80%;

[0039] S3. Loading: Mix the nano-zero-valent iron slurry prepared in S1 with the soil particles prepared in step S2 at a mass ratio of 1:8, stir at a stirring speed of 180 rpm, and stir for 3 hours until uniform to obtain a loaded composite material;

[0040] S4. Restoration: Sprinkle the loaded composite material obtained in step S3 evenly on the hormo...

Embodiment 3

[0042] Embodiment 3 repairs the method for environmental hormone polluted soil

[0043] S1. Preparation of iron slurry: Mix 15 parts of nano-zero-valent iron powder with 180 parts of deionized water, 1 part of sodium dodecylsulfonate, and 1 part of bone glue, and stir to prepare nano-zero-valent iron slurry;

[0044] S2. Carrier treatment: remove impurities from uncontaminated soil, pass through a 70-mesh sieve, dry at 80°C until the moisture content of the soil particles is less than 5%, and crush it into soil particles with a uniform particle size and a particle size of less than 80 mesh, accounting for more than 80% of the soil particles;

[0045] S3. Loading: Mix the nano-zero-valent iron slurry prepared in S1 with the soil particles prepared in step S2 at a mass ratio of 1:6, stir at a stirring speed of 120 rpm, and stir for 2 hours until uniform to obtain a loaded composite material;

[0046] S4. Restoration: Sprinkle the loaded composite material obtained in step S3 evenl...

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Abstract

The invention discloses a method for repairing environmental hormone contaminated soil. According to the method for repairing the environmental hormone contaminated soil,nanoscale zero-valent ironis prepared into a slurry, and thenanoscale zero-valent iron slurry is loaded onto uncontaminated soil,then mixed with the contaminated soil, then water is sprinkled for moistening, repair can be completed afterbeing set aside for a period of time,and the repaired soil is obtainedthrough repeated repairs; some of the repaired soil is taken and loaded again to be used repeatedly. According to the method for repairing the environmental hormone contaminated soil, the uncontaminated soil or the repaired soil is adopted for loading, the nanoscale zero-valent iron is prepared into the slurry, agglomeration oxidation of nano ironcan be effectively prevented, the utilization rate and the removal efficiency are improved; in-situ repair can be realized, mechanized large-scale treatment can be realized,and the characteristics of being good in degradation effect, having no secondary pollution, being simple in method and low in processing cost are realized.

Description

Technical field: [0001] The invention belongs to the technical field of remediation of soil polluted by environmental hormones, and in particular relates to a new method for remediating soil polluted by environmental hormones. Background technique: [0002] With the continuous development of industry, a large amount of environmental hormones are released into the environment during the production and use of pesticides, hormone drugs, additives and plastic products and waste disposal. When environmental hormones enter the organism, although they are exogenous, the molecular structure of some environmental hormones is similar to that of normal hormones, and they compete with normally secreted hormones to bind to hormone receptors in cells and interact with hormones. Produce the same effect, thereby causing the endocrine disorder of the organism, resulting in the abnormal regulation of the normal hormone of the organism. In the human body, problems in many aspects such as deve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/08B22F9/24
CPCB09C1/08B09C2101/00B22F9/24B22F2009/245
Inventor 张波王大萍汪雄
Owner 湖南飞润新材料有限公司
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