摘要
利用凹土分别与硅藻土及粉煤灰制备了两种复合生物滤料,对制备的两种复合滤料进行了孔径分布分析,复合滤料同时进行了挂膜实验,并对挂膜前后SEM进行了比较分析。不同滤料对COD和氨氮去除率及DO值进行了测试,所制备的两种复合生物滤料性能良好,硅藻土与凹土制备的复合生物滤料挂膜及水处理性能优于粉煤灰与凹土制备的复合生物滤料。
Two different biological filter medium were prepared from diatomite and coal fly ash based on attapulgite,and their properties were tested by PSD.SEM before and after the biofilm was studied,with detection of the removal rates of COD and NH3-N as well as DO.Results showed that the two biological filter medium had good performance.The diatomite and attapulgite filter medium of biofilm formation and water treatment performance were superior to that of coal fly ash and attapulgite filter.
出处
《环境科学与技术》
CAS
CSCD
北大核心
2011年第4期35-38,92,共5页
Environmental Science & Technology
基金
江苏省建设厅科技项目(JS2007ZD12)
淮阴工学院科研项目(351707076)
关键词
凹土
硅藻土
粉煤灰
生物滤料
attapulgite
diatomite
coal fly ash
biological filter medium
