| Solidification of Municipal Solid Waste Incineration Fly Ash with Cement and Its Leaching Behaviors of Heavy Metals |
| |
| 作者姓名： | YUQi-jun ShigeyoshiNagataki LINJin-mei |
| |
| 作者单位： | [1]SouthChinaUniversityofTechnology [2]AichiInstituteofTechnolog(Japan) [3]NiigataUniversity(Japan) |
| |
| 基金项目： | SupportedbyJapanSciencePromotionSociety (No.96R0 76 0 1) |
| |
| 摘 要： | The solidifying qffect of cement addition on municipal solid waste incineration fly ash ( MSWFA for short, collected from the gas exhaust system of MSW incinerator), the interaction of MSWFA with cement and water and the leaching of heavy metals from cement-solidified MSWFA are investigated. The main results show that : ( 1 ) when MSWFA is mixed with cement and water, 112 evolution, the formation and volume expansion of AFt will take place, the volume expansion can be reduced by ground rice husk ash addition ; (2) heavy metals do leach from cement-solidified MSWFA and at lower pH more leaching will occur; (3) compared with cement - so-lidified fly ash, the leachate of solidified MSWFA is with higher heavy metal contents ; (4) with the increment of cement addition leached heavy metals are decreased ; and (5) concentrations of Zn , Mn , Cu and Cd in all the leachates can meet the relevant Standards of Japan, but as the regulations for soil and groundwater protection of Japan are concerned, precautions against the leaching of Pb , Cl^- and Cr^6 and so on are needed.
|
| 关 键 词： | 城市固体废物 飞灰 过滤 重金属 环境影响 环境保护 废物处理 焚化 MSWFA 凝固 |
| 收稿时间： | 30 June 2002 |
Solidification of municipal solid waste incineration fly ash with cement and its leaching behaviors of heavy metals |
| |
| YUQi-jun ShigeyoshiNagataki LINJin-mei.Solidification of Municipal Solid Waste Incineration Fly Ash with Cement and Its Leaching Behaviors of Heavy Metals[J].Journal of Wuhan University of Technology. Materials Science Edition,2003,18(1):55-60. |
| |
| Authors: | Yu Qi-jun Shigeyoshi Nagataki Lin Jin-mei |
| |
| Affiliation: | YU Qi jun 1) Shigeyoshi Nagataki 2) LIN Jin mei 3) 1) South China University of Technology 2) Aichi Institute of Technolog(Japan) 3) Niigata University(Japan) |
| |
| Abstract: | The solidifying effect of cement addition on municipal solid waste incineration fly ash (MSWFA for short,collected from the gas exhaust system of MSW incinerator),the interaction of MSWFA with cement and water and the leaching of heavy metals from cement solidified MSWFA are investigated.The main results show that:(1) when MSWFA is mixed with cement and water,H 2 evolution,the formation and volume expansion of AFt will take place,the volume expansion can be reduced by ground rice husk ash addition;(2) heavy metals do leach from cement solidified MSWFA and at lower pH more leaching will occur;(3) compared with cement-solidified fly ash,the leachate of solidified MSWFA is with higher heavy metal contents;(4) with the increment of cement addition leached heavy metals are decreased;and (5) concentrations of Zn,Mn,Cu and Cd in all the leachates can meet the relevant Standards of Japan,but as the regulations for soil and groundwater protection of Japan are concerned,precautions against the leaching of Pb,Cl - and Cr 6+ and so on are needed. |
| |
| Keywords: | municipal solid waste fly ash leaching heavy metals environmental impact |
| 本文献已被 CNKI 维普 万方数据 SpringerLink 等数据库收录！ |
