Liu Jun, Wang Zhengdong, Xie Guangming, Li Zhenlin, Fan Xu, Zhang Weizhuo, Xing Feng, Tang Luping, Ren Jun
Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, China.
Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, China.
Sci Total Environ. 2022 Dec 15;852:158254. doi: 10.1016/j.scitotenv.2022.158254. Epub 2022 Aug 24.
The increase in municipal solid waste (MSW) production has led to an increase in MSW incineration fly ash (MSWIFA) production. MSWIFA contains toxic and harmful substances such as heavy metals and dioxins, which can cause harm to the environment if not treated properly. Only a few MSWIFAs will be landfilled directly, and the rest will need to be treated by other methods. The treatment of MSWIFA can be divided into three types: separation, stabilization/solidification (S/S), and thermal treatment, which are either not fully developed or too costly. Resource utilization is a sustainable means of treating MSWIFA. MSWIFA is used in the production of cement and alkali-activated cementitious materials as a means of resource utilization with significant advantages. This can alleviate the consumption of nature and reduce greenhouse gas emissions in conventional cement production. Compared with MSWIFA cement, MSWIFA alkali-activated cementitious material can be achieved with almost no consumption of natural resources, which is worthy of further research to realize the large-scale application of MSWIFA. At the end of the paper, the perspective of separation of dioxins from MSWIFA, co-processing of MSWI ash, and production of "MSWIFA green materials" is presented.
城市固体废物（MSW）产量的增加导致了MSW焚烧飞灰（MSWIFA）产量的增加。MSWIFA含有重金属和二恶英等有毒有害物质，若处理不当会对环境造成危害。只有少数MSWIFA会直接填埋，其余的则需要通过其他方法处理。MSWIFA的处理可分为三类：分离、稳定化/固化（S/S）和热处理，这些方法要么尚未充分发展，要么成本过高。资源利用是处理MSWIFA的可持续手段。MSWIFA用于水泥和碱激活胶凝材料的生产，作为一种资源利用方式具有显著优势。这可以缓解自然资源的消耗，并减少传统水泥生产中的温室气体排放。与MSWIFA水泥相比，MSWIFA碱激活胶凝材料几乎可以在不消耗自然资源的情况下实现，值得进一步研究以实现MSWIFA的大规模应用。在论文结尾，介绍了从MSWIFA中分离二恶英、MSWI灰的协同处理以及“MSWIFA绿色材料”生产的前景。
