A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Hazardous waste carbonization/solidification treatment technique
The invention provides a hazardous waste carbonization/solidification treatment technique which is characterized by comprising the following steps: (1) injecting cement and hazardous waste into a container, stirring, and carrying out standard curing for 28 days; (2) after the standard curing, putting the container into a supercritical carbon dioxide circulating apparatus, introducing carbon dioxide, closing the apparatus, setting the pressure and temperature in the apparatus, and setting the dwelling time; and (3) after the dwelling, slowly relieving the pressure, taking out the container, and sealing with a cover to obtain a cement solidification body formed by cement and hazardous waste. After being subjected to carbonization, the cement solidification body has higher density, higher strength and better leaching resistance; and as the internal water content decreases, the radiation-resistance stability of the cement is enhanced. When the performance indexes of the cement solidification body satisfy related property requirements of the building material, the cement solidification body can be reused as the building material.
Hazardous waste carbonization/solidification treatment technique
The invention provides a hazardous waste carbonization/solidification treatment technique which is characterized by comprising the following steps: (1) injecting cement and hazardous waste into a container, stirring, and carrying out standard curing for 28 days; (2) after the standard curing, putting the container into a supercritical carbon dioxide circulating apparatus, introducing carbon dioxide, closing the apparatus, setting the pressure and temperature in the apparatus, and setting the dwelling time; and (3) after the dwelling, slowly relieving the pressure, taking out the container, and sealing with a cover to obtain a cement solidification body formed by cement and hazardous waste. After being subjected to carbonization, the cement solidification body has higher density, higher strength and better leaching resistance; and as the internal water content decreases, the radiation-resistance stability of the cement is enhanced. When the performance indexes of the cement solidification body satisfy related property requirements of the building material, the cement solidification body can be reused as the building material.
Hazardous waste carbonization/solidification treatment technique
CHAI XIAOXIONG (author) / WANG CHEN (author) / WANG HAIYANG (author)
2015-06-03
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
| European Patent Office | 2021
| European Patent Office | 2023
Leaching resistance of hazardous waste cement solidification after accelerated carbonation
| Online Contents | 2016