Method for remedying heavy metal contaminated soil by combining plants with microorganisms

A technology for microbial remediation and contaminated soil, which is applied in the field of remediation of heavy metal-contaminated soil by using plants combined with microorganisms. It can solve the problems of soil structure damage, soil fertility degradation, and large engineering workload, and achieve the effects of strong drought resistance, vigorous growth, and well-developed root system.

Active Publication Date: 2018-01-09
广州德隆环境检测技术有限公司
View PDF9 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods have their own advantages, but generally there are large quantities of engineering, high cost, easy

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 for remedying heavy metal contaminated soil by combining plants with microorganisms

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: The present embodiment provides a kind of method utilizing plant joint microorganism to remediate heavy metal contaminated soil, and remediation method comprises the following steps:

[0025] (1) Plow the polluted soil 40cm deep, cultivate the soil finely, and then bury a mesh pipe with a diameter of 30mm at 40cm underground. The pipe is equipped with a 2mm vent hole every 10cm, and a layer of filter membrane is wrapped outside the vent hole. , wherein, after the filter membrane is mixed with polytetrachlorethylene, difluoride copolymer, and polym-phenylene isophthalamide in a mass ratio of 7:1:2, the molar The percentage is 5% and the porous filter membrane formed on the titanium dioxide carrier is compounded. The filter membrane can prevent soil from entering the steam pipeline and blocking the pipeline, thereby affecting the efficiency of sterilization and disinfection. The opening rate of the porous filter membrane is 70%, and the pore size is 0.1 μm. ...

Embodiment 2

[0029] Embodiment 2: The present embodiment provides a kind of method utilizing plant joint microorganism to remediate heavy metal contaminated soil, and remediation method comprises the following steps:

[0030] (1) Plow the polluted soil 40cm deep, cultivate the soil finely, and then bury a mesh pipe with a diameter of 35mm at 40cm underground. The pipe is provided with a 2.5mm vent hole every 10cm, and a layer of filter is wrapped outside the vent hole. Membrane, wherein, the filter membrane is mixed with polytetrachlorethylene, difluoroethylene copolymer, and polym-phenylene isophthalamide in a mass ratio of 7:1:2, and then heated at 135°C and vacuum. A porous filter membrane formed on a titanium dioxide support with a molar percentage of 20%. The filter membrane can prevent soil from entering the steam pipeline and blocking the pipeline, thereby affecting the efficiency of sterilization and disinfection. The opening rate of the porous filter membrane is 77.5%, and the por...

Embodiment 3

[0034] Embodiment 3: This embodiment provides a kind of method utilizing plant joint microorganism to remediate heavy metal polluted soil, and remediation method comprises the following steps:

[0035] (1) Plow the polluted soil 40cm deep, cultivate the soil finely, and then bury a mesh pipe with a diameter of 40mm in the ground 40cm. The pipe is equipped with a 3mm vent hole every 10cm, and a layer of filter membrane is wrapped outside the vent hole. , wherein, after the filter membrane is mixed with polytetrachlorethylene, difluoride copolymer, and polym-phenylene isophthalamide in a mass ratio of 7:1:2, the molar The percentage is 30% composited to the porous filter membrane formed on the titanium dioxide carrier. The filter membrane can prevent soil from entering the steam pipeline and blocking the pipeline, thereby affecting the efficiency of sterilization and disinfection. The opening rate of the porous filter membrane is 85%, and the pore size is 1 μm. Then cover the g...

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
Apertureaaaaaaaaaa
Apertureaaaaaaaaaa
Apertureaaaaaaaaaa
Login to view more

Abstract

The invention discloses a method for remedying heavy metal contaminated soil by combining plants with microorganisms. The method comprises the specific steps that (1), the contaminated soil is deep ploughed 40 cm, then meshed pipelines with the diameter of 30-40 mm are buried, and sterilization and disinfection liquid is introduced into the pipelines; (2), a base fertilizer is applied, and a microorganism mixed fungicide and water are mixed according to the mass ratio of 1:5 and then sprayed according to the specification of 20-30 kg per mu; (3), dioscorea zingiberensis is planted, and mixed seeds of vetiver grass and bidens maximowicziana are sown between every two adjacent rows; and (4), the vetiver grass and the bidens maximowicziana which are planted among the dioscorea zingiberensis are rooted up to recycle heavy metal on September to October every year, the seeds are sown again on March to April in the next year, and the dioscorea zingiberensis, the vetiver grass and the bidens maximowicziana are rooted up together after three continuous years to recycle the heavy metal. The soil remediation method is good in remediation effect, low in cost, easy to manage and operate and capable of not generating secondary pollution and has a wide application prospect.

Description

technical field [0001] The invention relates to a method for treating polluted soil, in particular to a method for repairing heavy metal polluted soil by using plants combined with microorganisms. Background technique [0002] Farmland soil pollution has become one of the important factors restricting the sustainable development of agriculture and food safety. There are two ways to treat heavy metal-contaminated soil: one is to remove the pollutants, and the other is to change the form of heavy metals in the soil and fix them. Around these two approaches, different restoration techniques and measures have emerged, mainly including engineering measures, physical and chemical restoration techniques, and agronomic control measures. These methods have their own advantages, but generally there are ecological problems such as large amount of engineering, high cost, easy to cause secondary pollution, soil structure damage and soil fertility degradation. [0003] Bioremediation is...

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): B09C1/10B09C1/00B09B3/00
Inventor 蒋乐群蒋晓璐彭晓春
Owner 广州德隆环境检测技术有限公司
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