粉煤灰在环境中的应用.docx

粉煤灰在环境保护中的应用 摘要 粉煤灰是来自火力发电厂的大宗工业固体废物, 具有粒细质轻、多孔松散、 比表面大、活性基团较多和吸附能力较强等特性, 在环境保护领域广为应用。 介绍了粉煤灰在废水处理、烟气脱硫和吸声材料制备等方面的应用, 存在的问题, 展望了粉煤灰未来环保功能的开发方向。 关键词: 粉煤灰;环境保护;吸附 Abstract 针对当前 Fly ash is one of the largest industrial solid waste comes from coal-fired power plant, with thecharacteristics of porous, loose, fine particle, light mass, large specific surface, many active groups and strongadsorptive capacity etc., therefore, it can be widely applied in the field of environmental protection.In thearticle, the applications of fly ash in wastewater treatment, flue gas desulfurization, and sound absorbingmaterial preparation are introduced, then future development trends of the fly ashs environmental protectionfunction are predicted based on the present problems. Keywords: fly ash; environmental protection; adsorption 目录 0 前言 .............................................................................................................................................1 1 我 国 粉 煤 灰 的 现 状 和 危 害 .............................................................................................1 1.1 我 国 粉 煤 灰 的 现 状 . ...............................................................................................1 1.2 粉 煤 灰 的 危 害 .........................................................................................................1 1.2.1 污 染 水 源 .........................................................................................................1 1.2.2 污 染 大 气 .........................................................................................................2 1.2.3 占 用 土 地 、 污 染 土 壤 ................................................................................2 2  粉 煤 灰 的 结 构 及 性 质 . ...................................................................................................2 2.1 粉 煤 灰 的 结 构 ................................................