摘要
研究了造粒粉煤灰的磷吸附特征,以及采用造粒粉煤灰为填料的滤床对实际景观水的磷去除效果。结果表明:造粒粉煤灰的最大磷吸附容量达5.95mg/g,用于对初始浓度≤5mg/L的模拟水进行处理,最终处理水中磷浓度低于0.1mg/L。针对污染浓度较低的实际景观水,在0.25m/h的较低滤速下运行时,磷去除率保持在85%以上;在1.5m/h的高滤速下运行时,21d内磷的去除率始终维持在30%～40%之间;同时景观水中的PO3--P、NH3-N、COD、浊度等水质指标也得到了显著改善,pH略有上升。
The adsorption characteristics of phosphorus onto granular fly ash and its phosphorus adsorption ability as the material in filter bed for landscape water treatment were investigated. The results suggested that maximum adsorption capacity of granular fly ash was about 5.95mg/g .The granular fly ash could continuously adsorb the phosphorus until the phosphorus concentration was below 0.1mg/L, In filter bed, at the filtration rate of 1.5m/h, the removal rate could reach to above 85%; at the filtration rate of 1.5m/h, the removal rate could remain by 30%-40%, After 21 days operation, the PO3^-4,-P, NH3-N, COD, turbidity in landscape water declined significantly, but the pH raised.
出处
《水处理技术》
CAS
CSCD
北大核心
2006年第12期61-63,共3页
Technology of Water Treatment
基金
"十五"863重大科技专项(2002AA601012-06)
关键词
造粒粉煤灰
吸附
富营养化景观水
磷
granular fly ash
adsorption
eutrophicated landscape water
phosphorus
