环境保护科学2024，Vol.50Issue(6)：13-20,8.DOI:10.16803/j.cnki.issn.1004-6216.202310016
飞灰水洗液处理工艺及其资源化利用研究进展
Research progress on treatment technology and resource utilization of waste solution used in fly ash water-washing
摘要
Abstract
The water-washing method is widely used as a pretreatment method for fly ash incinerated by municipal solid waste,which is conducive to further solidification/stabilization treatment or resource recovery of fly ash.The water-washing of fly ash contains many chlorides and trace heavy metals,and direct discharge will cause serious environmental problems.Optimizing the treatment process of fly ash water-washing solution and realizing the resource utilization of water lotion has become the industry's inevitable trend of green development.The source,composition and hazard of fly ash liquid were briefly overviewed.In view of the large amount of chlorine salts and trace heavy metals in fly ash liquid,the following treatment methods were described:chemical precipitation method was adopted to remove heavy metals from the liquid.The methods of reverse osmosis,evaporation crystallization and electrodialysis were used to remove chlorine salts from fly ash washing.The way of resource utilization of water washing solution as put forward,which could recover sodium chloride,potassium chloride and other chlorides from water wash solution and precipitate calcium carbonate through carbon dioxide mineralization reaction.It was expected to provide a theoretical reference for green and sustainable fly ash water-washing solution treatment processes.关键词
飞灰/氯盐/重金属/废水处理/资源化利用Key words
fly ash/chlorides/heavy metal/waste water treatment/resource utilization分类
资源环境引用本文复制引用
何玉清,张佳,岳阳,钱光人..飞灰水洗液处理工艺及其资源化利用研究进展[J].环境保护科学,2024,50(6):13-20,8.基金项目
科技部重点研发计划(2019YFC1906900) （2019YFC1906900）
