Supercharge Your Innovation With Domain-Expert AI Agents!

Fluorine-containing hazardous waste stabilized solidified body and preparation method thereof

A solidified, hazardous waste technology, applied in chemical instruments and methods, transportation and packaging, etc., to achieve the effect of simple process, small number of equipment, and uniform physical state

Pending Publication Date: 2022-01-14
宁夏宸宇环保科技有限公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, there are toxic pollutants such as heavy metals and cyanide in fluorine-containing waste.
At present, the solidification and stabilization method for fluorine-containing hazardous waste is mainly to form a solidified body by adding water, cement, lime, and fly ash to stir, and then landfill it. Among them, harmful components such as fluoride ions far exceed the limit of safe landfill standards

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

preparation example Construction

[0040] The preparation method of the fluorine-containing hazardous waste stabilized solidification body as described in the first aspect of the present invention involved in the second aspect of the present invention can be understood as a method for stabilizing and solidifying fluorine-containing hazardous waste, or a method for stabilizing and solidifying fluorine-containing hazardous waste. A method for stabilizing and solidifying hazardous waste materials containing fluorine, comprising the following steps:

[0041] (1) Detection of hazardous waste to be treated: take an appropriate amount of fluorine-containing hazardous waste, and detect the content of inorganic fluoride, cyanide and heavy metal in its leachate. If it is equal to the allowable landfill control limit of hazardous waste in the National Hazardous Waste Landfill Pollution Control Standard, then the fluorine-containing hazardous waste is a fluorine-containing hazardous waste raw material that needs to be solid...

Embodiment 1

[0058] (1) Detection of hazardous waste to be treated: take an appropriate amount of fluorine-containing hazardous waste to be treated, and conduct a leaching toxicity test. The result shows that the index of inorganic fluoride is 2158mg / L, the index of beryllium is 0.4mg / L, and the index of cyanide is 52mg / L , and in the national safety landfill pollution control standard, the index of inorganic fluoride should be controlled below 120mg / L, the index of beryllium should be controlled below 0.2mg / L, and the index of cyanide should be controlled below 6mg / L. Obviously, the initial leaching toxicity of this hazardous waste far exceeds the national safety landfill pollution control standard, and solidification and stabilization treatment is required.

[0059] (2) Ready-mixed reaction: Add 100kg of fluorine-containing hazardous waste to be treated into the stirring reactor, add 14kg (the mass ratio of curing agent to fluorine-containing hazardous waste raw materials is 0.14:1) quick...

Embodiment 2

[0069] (1) Detection of hazardous waste to be treated: take an appropriate amount of fluorine-containing hazardous waste to be treated, and conduct a leaching toxicity test. The result shows that the index of inorganic fluoride is 3652mg / L, the index of lead is 2.2mg / L, and the index of cyanide is 75mg / L , and in the national safety landfill pollution control standard, the index of inorganic fluoride should be controlled below 120mg / L, the index of lead should be controlled below 1.2mg / L, and the index of cyanide should be controlled below 6mg / L. Obviously, the initial leaching toxicity of this hazardous waste far exceeds the national safety landfill pollution control standard, and solidification and stabilization treatment is required.

[0070] (2) Ready-mixed reaction: Add 100kg of fluorine-containing hazardous waste to be treated into the stirring reactor, add 25kg (the mass ratio of curing agent to fluorine-containing hazardous waste raw material is 0.25:1) quicklime and 20...

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 relates to a fluorine-containing hazardous waste stabilized solidified body. The solidified body is obtained through oxidative degradation and ion recombination reaction of a fluorine-containing hazardous waste raw material, a curing agent and a water mixture, the content of fluoride, cyanide, heavy metal and other harmful ingredients is within the national safety landfill pollution control standard range, and flexible landfill can be carried out. The invention further relates to a preparation method of the fluorine-containing hazardous waste stabilized solidified body. According to the method, the fluorine-containing hazardous waste is solidified and stabilized through a novel formula and technological operation conditions, the leaching toxicity of fluoride, cyanide, heavy metal and other harmful ingredients in the hazardous waste is greatly reduced, and the requirement for safe landfill is met. The method is simple in process, low in cost, small in equipment number and easy to implement.

Description

technical field [0001] The invention relates to the technical field of harmless disposal of hazardous waste, in particular to a fluorine-containing hazardous waste stabilized solidified body and a preparation method thereof. Background technique [0002] For the treatment of toxic, hazardous and hazardous waste, landfill is a relatively simple and direct treatment method. Adopting safe landfill can effectively reduce the pollution of groundwater, surface water, soil and air. At present, most cities and regions have built supporting hazardous waste landfills. According to the requirements, the landfill must be treated with anti-seepage to prevent the toxic and harmful substances in the hazardous waste from seeping into the ground and polluting the soil and water. However, due to the limited anti-seepage and sealing capacity of the landfill, there is leakage and diffusion of toxic components of solid hazardous waste, which makes the liquid of harmful substances such as heavy...

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): C04B28/10B09B3/25
CPCC04B28/10C04B2111/00017C04B18/0463C04B22/124C04B22/064C04B22/10C04B22/068C04B22/12C04B22/085C04B22/147C04B22/141
Inventor 孙刚袁泉
Owner 宁夏宸宇环保科技有限公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com