摘要
粉煤灰由于具有较大的比表面积和较好的吸附性能,被广泛应用于废水处理中。本文对粉煤灰的基本性质和改性技术的现状进行了介绍,分析了热改性、酸碱盐改性和表面活性剂改性的机理。热改性高温处理能够破坏粉煤灰的玻璃体结构,酸碱盐改性通过与粉煤灰发生反应生成新物质而提高粉煤灰的活性,表面活性剂改性则通过粉煤灰与表面活性剂复合而提高吸附中和能力。阐述了改性粉煤灰在含磷废水处理中的应用现状,为研究改性粉煤灰在含磷废水处理中的综合应用奠定基础。
Fly ash had been applied in the wastewater treatment due to its large specific surface area and certain adsorption capacity. The basic properties of fly ash and the current situation of modification technology were introduced in this paper. The mechanisms of thermal,acid,alkali,salt and surfactant modification were analyzed. The structure of the vitreous was damaged under high temperature in thermal modification and the fly ash activities could be increased owing to the production of new substance in acid,alkali and salt modification,while the adsorption ability was increased through the compound of surfactant and fly ash in surfactant modification. The application of modified fly ash in phosphorus wastewater treatment is stated,which lay the foundation for the comprehensive application of the modified fly ash in wastewater treatment.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2015年第7期1921-1925,共5页
Bulletin of the Chinese Ceramic Society
基金
吉林省科技发展计划项目(20150204052SF
20130206006SF)
吉林省教育厅"十二五"科学技术研究项目(吉教科合字[2014]第106号)
关键词
粉煤灰
改性
含磷废水
fly ash
modification
phosphorus wastewater
