摘要
粉煤灰是电厂煤燃烧时产生的多孔颗粒状废弃物,具有一定的吸附性。经试验研究发现,如果对粉煤灰进行无机、有机或者物理改性后,或者是能增加孔隙率,或者是能增加表面活性,使吸附性能明显提高。另外还可以把粉煤灰合成混凝剂,如合成聚硅酸铁铝PSAF,在工业污水处理中取得很好的效果,并有广泛的推广价值。同时作为多孔颗粒状物质,是很好的滤料,可应用在生物曝气滤池中。最后讨论了粉煤灰在使用中的问题及今后的发展趋势。
The coal fly ashes are more porous granular waste matters which were produced when the coal burned in power station. Through trial founding that if modified coal fly ashes by inorganic, organic chemical or physics, it can increase porosity or surfactant, and enhance the adsorption. In addition the coal fly ashes can be synthesized coagulant, such as poly-silicate alum ferric,when the coagulant apply to disposal wastewater, the effect is better, and it also has a wide range of value to be promotion. As more porous granular matter, it is high-quality media using in biological aerated filter. At last discuss the problem when using the coal fly ashes and development trend in the future.
出处
《中国资源综合利用》
2010年第10期28-31,共4页
China Resources Comprehensive Utilization
基金
山东省自然科学基金(Y2007F50)
关键词
粉煤灰
改性
混凝剂
滤料
coal fly ashes
modification
coagulant
filtration media
