Method for safely utilizing soil in industrial site

A soil and site technology, applied in the field of safe utilization of industrial site soil, to achieve the effects of simple curing process, enhanced strength and reliability, and low cost

Inactive Publication Date: 2019-01-11
CHANGSHA HUIJU ENVIRONMENTAL TECH CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is: for the compound heavy metal and organic matter pollution in the soil of industrial sites, strengthen decomposition, stabilization, and solidification to form a solidified body, which can be safely reused

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 safely utilizing soil in industrial site

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Take the soil that is heavily polluted by various heavy metals and various toxic organic compounds in the industrial site, remove sand and gravel, add an appropriate amount of dilute acetic acid solution and sodium persulfate powder accounting for 2% of the soil mass for stirring treatment, sodium persulfate produces sulfate Free radicals and sulfate radicals degrade the high-ring PAHs in the soil into low-ring and low-toxic substances; add a certain amount of calcium oxide powder to the treated soil and mix it, then send it to the muffle furnace for high-temperature roasting, and the temperature is controlled at 600°C to obtain soil from which organic pollutants have been removed; add a certain mass proportion of diatomite with a particle size of 1 to 5 mm, a certain mass proportion of silica gel powder with a particle size of 1 to 5 mm and a certain mass proportion to the soil from which organic pollutants have been removed. The proportion of pebbles with a particle si...

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 diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to view more

Abstract

The invention provides a method for safely utilizing soil in an industrial site. The method comprises: taking soil in an industrial site, removing sand and gravels, adding an appropriate amount of a dilute acetic acid solution and a certain ratio of sodium persulfate powder into the soil, carrying out stirring treatment, adding calcium oxide powder into the mixture, carrying out mixing, feeding the mixture into a muffle furnace, carrying out high temperature roasting, adding diatomite, silica gel powder and pebbles into the mixture, carrying out full stirring, adding cement powder, activated alumina and tetrasodium iminodisuccinate into the soil mixture, adding an appropriate amount of water into the soil mixture, carrying out stirring mixing through a stirrer to obtain slurry, adding theslurry into a building block mold, carrying out vibration and compression molding at the normal temperature under normal pressure through a molding method, carrying out standing for 12-30h, and carrying out moisturizing natural curing for 20-30 days to obtain a cured body. The method has simple processes, needs less engineering equipment and is suitable for large-scale production. The prepared cured body can be used as a backfilling material of the site, realizes a low cost and is economical and practical.

Description

Technical field: [0001] The invention relates to a method for safely utilizing soil in industrial sites, and belongs to the technical field of solid waste treatment and recycling in the field of environmental protection. technical background: [0002] With the popularization and replacement of electronic products, the generation of electronic waste is increasing day by day. Under the background of global resource shortage and huge consumption of electronic and electrical products, the electronic and electrical waste dismantling and recycling industry is developing rapidly. However, due to backward technology and lack of supervision, the dismantling of electronic and electrical waste has caused serious pollution to the soil environment in some areas, threatening human and ecological health. It is estimated that the annual production of electronic waste in my country is about 1.11 million tons, accounting for 1% of the total annual domestic waste in my country. The treatment ...

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): C04B28/04C04B20/02
CPCC04B28/04C04B20/023C04B2111/00732C04B14/303C04B14/361C04B14/08C04B22/064C04B14/02C04B24/04
Inventor 张柏林袁玉香
Owner CHANGSHA HUIJU ENVIRONMENTAL TECH CO LTD
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