摘要
随着电力工业的发展,燃煤电厂中粉煤灰排放量逐年增加,粉煤灰的有效利用逐渐引起人们的重视。由于粉煤灰表面多孔,且其上所含有氧化铝和氧化硅能与吸附质通过化学键结合,经过改性后,其吸附性能更加得到提高,因此,在废水处理领域具有良好的应用。本文介绍了粉煤灰在水处理方面的作用机理,归纳了粉煤灰的改性方法,阐述了改性粉煤灰在NH3-N废水、含磷废水、重金属废水、酸性矿井污水和染料废水中的应用进展。
With the development of power industry, the quantity of coal fly ash emissions has been increased year by year in coal-fired power plant. The utilization of coal fly ash has gained more and more attention. Owing to the high percentage of alumina and sihca in fly ash, and the porous surface, fly ash is considered to be a potential adsorbent. The adsorption performance of fly ash can be much improved after modification, so it has good application in the field of wastewater treatment. The mechanism of coal fly ash in water treatment, and the modification methods of coal fly ash are summarized in this paper. The progress on the application progress of coal fly ash in ammonia-nitrogen wastewater, phosphorus wastewater, heavy metals wastewater, acidic mine drainage and dye wastewater are also expounded.
出处
《化学工程师》
CAS
2015年第5期61-63,74,共4页
Chemical Engineer
基金
中央高校基本科研业务费专项资金资助(2014MS123)
关键词
粉煤灰
改性
废水处理
coal fly ash
modification
wastewater treatment
