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

Application of dockleaf knotweed to remediation of heavy metal pollution of mine soil and sludge

A technology of Polygonum sorrel and heavy metals, which is applied in the restoration of polluted soil and other directions, can solve the problems of insufficient plant variety resources, and achieve the effect of rapid growth and strong diffusion ability.

Inactive Publication Date: 2011-02-02
SICHUAN AGRI UNIV +5
View PDF2 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the purpose of the present invention is exactly to the above-mentioned problem that can be used for the insufficient plant variety resource of soil heavy metal pollution bioremediation, and a kind of new plant variety Polygonum sorrel is provided in repairing cadmium, copper, lead, zinc heavy metal of mine soil and sludge. Applications in Pollution

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

Embodiment 1

[0017] This embodiment is the application of Polygonum sorrel in repairing cadmium, copper, lead, zinc heavy metal pollution of mine soil, and its concrete practice is:

[0018] Using direct transplanting, under natural conditions, plant Polygonum lapathifolium Linn (Polygonum lapathifolium Linn) in the soil polluted by heavy metals in the Baodang lead-zinc mining area in Yingjing, Sichuan Province;

[0019] After 3 months, carry out stubble and harvest the aerial part of the plant, and measure wherein the weight percentages of four heavy metals of Cd, Cu, Pb, and Zn are respectively: 116.9 mg kg -1 , 256.9 mg kg -1 、640.8mg kg -1 、2114.3mg kg -1 .

Embodiment 2

[0021] This embodiment is the application of Polygonum sorrel in the heavy metal pollution of cadmium, copper, lead and zinc in repairing sludge, and its specific method is:

[0022] Using seed sowing method under natural conditions, Polygonum lapathifolium Linn was planted in the heavy metal-polluted sludge of Fuquan lead-zinc mining area in Hanyuan County, Sichuan Province;

[0023] After 85 days, carry out stubble to harvest the above-ground part of the plant, and measure wherein the weight percentages of four heavy metals of Cd, Cu, Pb, and Zn are respectively: 108.6mg kg -1 、204.8mg kg -1 、685.3mg kg -1 、2213.7mg kg -1 .

[0024] It can be seen from the above-mentioned Examples 1 and 2 that the present invention can obviously absorb heavy metals such as Cd, Cu, Pb, Zn in the polluted soil by planting Polygonum sorrel in the mine soil or sludge polluted by heavy metals, so as to effectively restore the mine The purpose of heavy metal pollution of soil and sludge.

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

No PUM Login to View More

Abstract

The invention discloses application of dockleaf knotweed to remediation of cadmium, copper, lead and zinc pollution of mine soil and sludge, which is characterized by planting dockleaf knotweed in the mine soil or sludge polluted by heavy metals. The invention has the following beneficial effects: the dockleaf knotweed is planted in the mine soil or sludge by utilizing the enrichment characteristics of dockleaf knotweed toward cadmium, copper, lead, zinc and other heavy metals, and can absorb the accumulated heavy metals such as cadmium, copper, lead, zinc, etc, and most dockleaf knotweed is transported above the ground to achieve the aim of remediating heavy metal pollution of mine soil and sludge; the dockleaf knotweed dispenses with special management in the growth process, thus the cost is lower and the operability is strong; and meanwhile, the invention develops new plant resource varieties for remediation of plants polluted by heavy metals in the mine oil and sludge and brings new progress and development space for deep development of plant remediation technology.

Description

technical field [0001] The invention relates to the technical field of remediation of heavy metal pollution in the environment, in particular to the application of a plant, Polygonum sorrel, in remediating heavy metal pollution of cadmium, copper, lead and zinc in mine soil and sludge. Background technique [0002] Heavy metal pollution in the environment (such as cadmium Cd, copper Cu, lead Pb, zinc Zn, etc.) has the characteristics of concealment, long-term and irreversibility. The pollutants have poor mobility in the medium, long residence time, cannot be degraded by microorganisms, and can also Paths such as passing through the food chain will eventually affect human health and cause immeasurable impacts. [0003] At present, the methods for remediating heavy metal pollution mainly include engineering remediation, physical and chemical remediation, bioremediation (phytoremediation and microbial remediation), and agricultural ecological restoration. These methods have th...

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): B09C1/00
Inventor 张世熔邓瑞徐小逊李婷杨樱
Owner SICHUAN 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