摘要
为筛选出除磷效果更好的生物滞留填料,通过等温吸附、解吸附和动力学实验,分析沸石、石英砂、麦饭石、陶粒、无烟煤、铝污泥6种填料对磷的吸附特性。结果显示,6种填料均表现出较好的磷吸附性能。铝污泥对磷的吸附效率接近90%,解吸附率仅为12.78%,表现最为突出,其后依次为无烟煤和陶粒。6种填料的等温吸附过程符合Freundlich吸附模型,并均可采用准二级动力学模型描述其吸附动力学过程。
In order to find out the better biological retention substrates for phosphorus removal, the isothermal adsorption, desorption and kinetic experiments are carried out to analyze the characteristics of phosphorus adsorption of zeolite, quartz sand, medical stone, ceramic, anthracite and aluminum sludge. The results show that six kinds of substrates have very good phosphorus adsorption properties. In experimental conditions, the adsorption efficiency of phosphorus by aluminum sludge is close to 90%, the desorption rate is only 12.78% and the adsorption capacity is the most outstanding, followed by an- thracite and ceramic. The isothermal adsorption processes of six kinds of substrates accord with Freundlich adsorption model and Pseudo - second - order kinetics model can be used to simulate the adsorption kinetic process.
出处
《工业安全与环保》
北大核心
2016年第6期62-66,共5页
Industrial Safety and Environmental Protection
基金
国家重大水专项(2010ZX07320-003-005
2010ZX07320-002)
北京建筑大学基金项目(00331615008)
城市雨水系统与水环境省部共建教育部重点实验室项目(PXM2014014210000057)
关键词
生物滞留
磷
吸附
解吸附
动力学
biological retention phosphorus adsorption desorption kinetics
