摘要
研究采用电厂的粉煤灰为主要原料制备多孔陶粒,分别将其用作水处理中的微生物载体和吸附剂。挂膜结果表明:COD、氨氮这两项指标的出水基本稳定,去除率高。用多孔陶粒作吸附剂处理含铬废水时,等温吸附实验表明,多孔陶粒吸附水中的铬的等温方程基本符合Langmiur等温方程式,在pH值为酸性时对铬的去除率较高。用HCl和NaOH溶液再生多孔陶粒,酸的效果更好。
Fly ash ceramsite, prepared with fly ash from a power plant, is used as the media for bio-membrane colonization and adsorbent for wastewater treatment. The experimental study relates to bio-membrane formation in an activated sludge aeration tank and adsorption of Cr （VI） in wastewater. The study is assisted by using SEM （scanning electronic microscopy） for porous property of the ceramsite.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2008年第11期112-115,共4页
Environmental Science & Technology
关键词
粉煤灰
多孔陶粒
挂膜
吸附性能
fly ash
porous ceramsite
bio-membrane formation
adsorption performance
