Heavy-metal compound contaminated soil remediation agent and application

A soil remediation agent and composite pollution technology, applied in the field of heavy metal composite polluted soil remediation agent, can solve the problems of low remediation efficiency and high treatment cost, and achieve the effects of improving physical properties, high adsorption value and good treatment effect.

Inactive Publication Date: 2016-06-22
内蒙古浩天生物科技有限公司 +1
View PDF8 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are generally problems such as low repair efficiency and high processing cost.

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
  • Heavy-metal compound contaminated soil remediation agent and application

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0042] Using the mixture of straw and calcium oxide as raw material, the mass ratio of straw and calcium oxide is 20:1, vacuum pyrolysis for 30min under the conditions of system pressure of 20kPa and pyrolysis temperature of 500°C, the particles obtained by grinding Solid powder with a diameter of less than 3mm;

[0043] Obtain solid powders of ethylenediaminetetraacetic acid, polyacrylamide, nitrilotriacetic acid, α-cyclodextrin, and starch with a particle size of less than 2mm;

[0044] Weigh according to mass percentage:

[0045] Biochar 40%;

[0046] EDTA 15%;

[0047] Polyacrylamide 15%;

[0048] Nitrilotriacetic acid 15%;

[0049] Alpha-cyclodextrin 10%;

[0050] Starch 5%,

[0051] Biomass charcoal, ethylenediaminetetraacetic acid, polyacrylamide, nitrilotriacetic acid, α-cyclodextrin, and starch are mixed according to the above ratio to prepare the restoration agent.

preparation Embodiment 2

[0053] Using the mixture of straw and calcium oxide as raw material, the mass ratio of straw and calcium oxide is 20:1, vacuum pyrolysis for 30min under the conditions of system pressure of 20kPa and pyrolysis temperature of 500°C, the particles obtained by grinding Solid powder with a diameter of less than 3mm;

[0054] Obtain solid powders of ethylenediaminetetraacetic acid, polyacrylamide, nitrilotriacetic acid, α-cyclodextrin, and starch with a particle size of less than 2mm;

[0055] Weigh according to mass percentage:

[0056] Biochar 50%;

[0057] EDTA 20%;

[0058] Polyacrylamide 10%;

[0059] Nitrilotriacetic acid 10%;

[0060] α-cyclodextrin 5%;

[0061] Starch 5%;

[0062]Biomass charcoal, ethylenediaminetetraacetic acid, polyacrylamide, nitrilotriacetic acid, α-cyclodextrin, and starch are mixed according to the above ratio to prepare the restoration agent.

preparation Embodiment 3

[0064] Using the mixture of straw and calcium oxide as raw material, the mass ratio of straw and calcium oxide is 20:1, vacuum pyrolysis for 30min under the conditions of system pressure of 20kPa and pyrolysis temperature of 500°C, the particles obtained by grinding Solid powder with a diameter of less than 3mm;

[0065] Obtain solid powders of ethylenediaminetetraacetic acid, polyacrylamide, nitrilotriacetic acid, α-cyclodextrin, and starch with a particle size of less than 2 mm;

[0066] Weigh according to mass percentage:

[0067] Biochar 30%;

[0068] EDTA 10%;

[0069] Polyacrylamide 20%;

[0070] Nitrilotriacetic acid 20%;

[0071] Alpha-cyclodextrin 10%;

[0072] Starch 10%,

[0073] Biomass charcoal, ethylenediaminetetraacetic acid, polyacrylamide, nitrilotriacetic acid, α-cyclodextrin, and starch are mixed according to the above ratio to prepare the restoration agent.

[0074] Embodiment 1-3 gained restorative agent application specific implementation and techn...

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 provides a heavy-metal compound contaminated soil remediation agent. The remediation agent is composed of the following ingredients in percentage by weight: 30-50% of biomass charcoal, 10-20% of ethylenediaminetetraacetic acid, 10-20% of polyacrylamide, 10-20% of nitrilotriacetic acid, 5-10% of alpha-cyclodextrin, and 5-10% of starch, wherein the abovementioned components adequately exert a synergistic effect, the content of effective-state heavy metal in the soil is greatly reduced through the effect of chelation, precipitation, adsorption, improvement, pH value adjustment and the like, and the prepared soil remediation agent has a good effect during remediation for cadmium-lead-arsenic compound contaminated soil. The remediation agent provided by the invention has the advantages of being simple and feasible in preparation method, and good in treatment effect.

Description

Technical field: [0001] The invention relates to the technical field of soil pollution remediation, in particular to a heavy metal compound polluted soil remediation agent and its application. technical background: [0002] Soil heavy metal pollution has gradually become the focus of public attention. [0003] According to the "National Soil Pollution Survey Bulletin" issued by the Ministry of Environmental Protection and the Ministry of Land and Resources in 2014, the overall situation of the national soil environment is not optimistic, the soil pollution in some areas is relatively serious, the quality of the soil environment of cultivated land is worrying, and the soil environment problems of industrial and mining wasteland are prominent. . Man-made activities such as industry, mining, agriculture, and high background values ​​of the soil environment are the main causes of soil pollution or exceeding standards. The total exceeding rate of national soil is 16.1%, of whic...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/08C09K17/40
CPCB09C1/08C09K17/40C09K2101/00
Inventor 周益辉
Owner 内蒙古浩天生物科技有限公司
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