Method and device for extracting heavy metal ions from soil

A heavy metal ion extraction technology, applied in the field of environmental pollution control, can solve pollution and other problems

Inactive Publication Date: 2010-05-12
赵烨 +5
View PDF0 Cites 38 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the serious pollution of soil Cd, Cr, Cu, Hg, Pb and Zn, and provides a method and device for extracting heavy metal ions from soil, which can effectively absorb-passivate-solidify-extract soil tillage Active Cd in layer 2+ 、C

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0055] Example 1 uses a combination of nano carbon fiber, activated carbon, acrylamide, potassium acrylate, and potassium sulfide to form a heavy metal ion adsorbent composition, and uses commercially available sludge particles as the carrier of the adsorbent composition. The specifications of nano carbon fiber are: OD>50nm, ID=25-40, Length=10-20um. The weight ratio of each component in the composition is:

[0056] Nano carbon fiber 0.5%

[0057] Activated carbon 10.00%

[0058] Cationic surfactant 18.00%

[0059] Acrylamide 3.00%

[0060] Potassium acrylate 5.00%

[0061] Potassium sulfide 2.5%

[0062] Sludge particles 61.00%

[0063] The above materials are thoroughly mixed to obtain an adsorbent mixture. The porous hard shell is made of Teflon-FEP material with excellent chemical resistance, strong resistance to mechanical impact, and transparent. Its specification is 40mm in diameter and 120mm in length. Round bottom screw cap structure, the thickness of the pipe is 2mm; 60-80 eve...

Example Embodiment

[0065] Embodiment 2 uses a combination of nano carbon fiber, activated carbon, acrylamide and potassium acrylate to form a heavy metal ion adsorbent composition, and the weight ratio of each component in the composition is:

[0066] Nano carbon fiber 0.30%

[0067] Activated carbon 8.00%

[0068] Cationic surfactant 15.00%

[0069] Acrylamide 3.00%

[0070] Potassium acrylate 3.00%

[0071] Potassium sulfide 1.80%

[0072] Sludge particles 68.90%

[0073] The above materials are fully mixed, and the porous hard shell is made of transparent polyurethane material with excellent chemical resistance, strong resistance to mechanical impact, and its specification is a pipe with a diameter of 50mm and a length of 150mm, and the two ends are buckled and fixed. A plurality of through holes with a diameter of 1-2 mm are distributed on the end cover, the tube body and the end cover, and the porous hard shell is filled with the heavy metal ion adsorbent composition to form a porous hard plastic capsu...

Example Embodiment

[0074] In Example 3, a combination of nano carbon fiber, activated carbon, acrylamide and potassium acrylate was used to form a heavy metal ion adsorbent composition, and the weight ratio of each component in the composition was:

[0075] Nano carbon fiber 0.80%

[0076] Activated carbon 12%

[0077] Cationic surfactant 20.00%

[0078] Acrylamide 5.00%

[0079] Potassium acrylate 5.00%

[0080] Potassium sulfide 2.50%

[0081] Sludge particles 54.70%

[0082] The porous hard shell is made of transparent polycarbonate material with excellent chemical resistance, strong resistance to mechanical impact, and its specification is a pipe with a diameter of 30mm and a length of 100mm. Both ends of the shell are buckled and fixed with end caps and the pipe body And the end cap is distributed with a plurality of through holes having a diameter of 1-2mm, and the above-mentioned heavy metal ion adsorbent composition is filled in the porous hard shell to form a porous hard plastic capsule.

[0083] Ap...

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
Diameteraaaaaaaaaa
Lengthaaaaaaaaaa
Diameteraaaaaaaaaa
Login to view more

Abstract

The invention relates to a method and a device for extracting heavy metal ions from soil, which are used for extracting heavy metal ions from the heavy metal polluted oil. The method comprises the following steps of: forming a heavy metal ion adsorbent by adopting a compound containing carbon nano fibers, active carbon, a cationic surface active agent, acrylamide, potassium acrylate, sludge particles and potassium sulfide; putting the heavy metal ion adsorbent in a porous hard shell to form a porous hard plastic bag; and embedding the porous hard plastic bag into soil for extracting the heavy metal ions. The method and the device for extracting the heavy metal ions from soil aim at the problem of severe pollution of Cd, Cr, Cu, Hg, Pb and Zn of the soil and can effectively absorb, passivate, solidify and extract active ions such as Cd2+, Cr3+, Cu 2+, Hg2+, Pb2+, Zn2+, and the like in plow layers of the soil, maintain microzone water of the soil, release a certain K+ ions and realize the update, the purification and the circular treatment of the absorbent in the device for extracting the heavy metal ions.

Description

technical field [0001] The invention belongs to the environmental pollution control technology, and in particular relates to a method and a device capable of effectively extracting toxic heavy metal ions in soil cultivation layers. Background technique [0002] At present, in view of the prevalence and severity of soil heavy metal pollution, some developed countries have formulated corresponding soil remediation plans. The U.S. federal government has formulated a soil and groundwater remediation plan, and plans to invest tens of billions to hundreds of billions of dollars. In 1994, the United States initiated and established the "Global Soil Remediation Network (Global Soil Remediation Network)". [0003] Throughout the research on remediation of soil heavy metal pollution at home and abroad, traditional heavy metal contaminated soil treatment mainly uses physical or chemical methods such as soil solidification, vitrification, leaching, soil washing, guest soil method, and ...

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): B09C1/00B01J20/24
Inventor 赵烨李强陈志凡朱宇恩杨旭呼红霞
Owner 赵烨
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap