Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method and device for carrying out in-situ remediation on farmland soil polluted by polyaromatic hydrocarbon

A polycyclic aromatic hydrocarbon, in-situ remediation technology, applied in the field of contaminated farmland soil remediation, can solve the problems of high cost, secondary pollution, low efficiency, etc., and achieve the effects of low cost, no secondary pollution, and simple process

Inactive Publication Date: 2017-12-08
QINGDAO AGRI UNIV
View PDF12 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Aiming at the defects of secondary pollution, low efficiency and high cost existing in the existing polycyclic aromatic hydrocarbon-contaminated farmland soil remediation technology, the present invention proposes an in-situ remediation polycyclic Method for polluting farmland soil with aromatic hydrocarbons, and simultaneously providing a device for realizing the method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for carrying out in-situ remediation on farmland soil polluted by polyaromatic hydrocarbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] According to the ratio of 1g glucose, 10g porous foam iron fine particles and 40ml water, first dissolve glucose in water to make glucose solution, then put the porous foam iron fine particles with a particle size of 200-500 microns into the glucose solution, and make a mixture liquid; the above mixed solution is placed in a hydrothermal reaction kettle, heated at 120°C for 6 hours (the pressure in the hydrothermal reaction kettle is 1.0-2.0MPa), and after the reaction, the fine particles of porous foam iron are taken out and washed with deionized water After drying, the fine particles of carbon-coated porous foam iron can be obtained.

[0034] The charcoal-coated porous iron foam fine particles, sodium perborate and sodium citrate powder are mixed evenly in a ratio of 70:15:15 by mass ratio, and the mixture is made into a mixture hopper 3; the mass concentration is 0.05% Hydrogen peroxide solution is charged in hydrogen peroxide solution storage tank 4.

[0035] Sprin...

Embodiment 2

[0037] According to the ratio of 2.5g glucose, 5g porous foam iron fine particles and 40ml water, glucose is dissolved in water earlier to make glucose solution, then drop into the glucose solution with a particle size of 200-500 micron porous foam iron fine particles to prepare Mixed solution: put the above mixed solution in a hydrothermal reaction kettle, heat at 160°C for 4 hours (the pressure in the hydrothermal reaction kettle is 1.0-2.0MPa), after the reaction, take out the porous foam iron fine particles and wash them with deionized water After drying, the fine particles of carbon-coated porous foam iron are obtained.

[0038] Carbon-coated porous iron foam fine particles, urea peroxide and potassium citrate powder are mixed uniformly in a ratio of 80:10:10 by mass ratio, and the mixture is filled into the mixture hopper 3; the mass concentration is 0.05% Hydrogen peroxide solution is charged in hydrogen peroxide solution storage tank 4.

[0039] Sprinkle the mixture e...

Embodiment 3

[0041] According to the ratio of 2g glucose, 15g porous foam iron fine particles and 40ml water, glucose is dissolved in water earlier to make glucose solution, and then the porous foam iron fine particles with a particle diameter of 200-500 microns are dropped into the glucose solution to form Mixed solution; put the above mixed solution in a hydrothermal reaction kettle, heat at 180°C for 2 hours (the pressure in the hydrothermal reaction kettle is 1.0-2.0MPa), after the reaction, take out the porous foam iron fine particles and wash them with deionized water After drying, the fine particles of carbon-coated porous foam iron are obtained.

[0042] The charcoal-coated porous iron foam fine particles, sodium perborate and sodium citrate powder are mixed evenly in a ratio of 90:5:5 by mass ratio, and the mixture is made into the mixture hopper 3; the mass concentration is 0.05% Hydrogen peroxide solution is charged in hydrogen peroxide solution storage tank 4.

[0043] Sprinkl...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method and a device for carrying out in-situ remediation on farmland soil polluted by polyaromatic hydrocarbon. The method comprises the following steps: (1) evenly mixing carbon coated porous foam iron subparticles with sodium perborate or urea peroxide and citrate powder, and evenly spreading mixture into polluted soil; (2) evenly spraying hydrogen peroxide solution into the polluted soil, carrying out enrichment and removal on polyaromatic hydrocarbon pollutant in the soil through adsorption, microelectrolysis and oxidation-reduction, and finally, recovering the carbon coated porous foam iron subparticles. The device comprises a movement rack, wherein the front part and the rear part of the movement rack are respectively provided with a front wheel and a rear wheel; the movement rack is provided with a mixture hopper, a hydrogen peroxide solution storage tank, a magnetic recovery device and a recovery tank in sequence from front to back; shower nozzles are distributed on the bottom of the hydrogen peroxide solution storage tank; the bottom of the mixture hopper is provided with a brake valve. The method and the device have the advantages of simple process, low cost, and high sustainability, the damage of soil microorganisms and organic matters can be avoided, and a risk of secondary pollution is avoided.

Description

technical field [0001] The invention relates to a method for remediating farmland soil polluted by polycyclic aromatic hydrocarbons, and belongs to the technical field of remediation of polluted farmland soil. Background technique [0002] Polycyclic aromatic hydrocarbons are carcinogenic, teratogenic, and mutagenic, and are highly hydrophobic and extremely difficult to be degraded by microorganisms. Therefore, they are widely found in soils rich in organic matter, and polycyclic aromatic hydrocarbons in soil account for more than 90% of the total reserves of all environments . With the acceleration of industrialization, the large-scale use and discharge of polycyclic aromatic hydrocarbons has caused the accumulation of polycyclic aromatic hydrocarbons in the soil, which has caused a great threat to human health and the ecological environment. Remediation of farmland soil polluted by polycyclic aromatic hydrocarbons has become an ecological environment. research hotspots in...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B09C1/08B09C1/00
CPCB09C1/08B09C1/00B09C1/085
Inventor 吴娟马东柴超李看看邬欣慧郑永权
Owner QINGDAO AGRI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com