水土保持学报2011，Vol.25Issue(3)：63-67,5.
不同基质去除水中氮、磷的作用机理及效应
Comparison of Removal Efficiency of Phosphorus and Ammonium in Solutions by Five Substrates
摘要
Abstract
Both phosphorus (P) and ammonium (NH4+ -N) adsorption capacities of fly ash, alumina, activated carbon, burnt stone and vermiculite with physical and chemical characteristics were examined for the potential use as substrate in removing P and N in polluted water. Results showed that: Among the 5 substrates, fly ash was alkaline with the highest Fe, Ca and active Fe, Ca contents, while alumina was acid with highest Al and active Al contents. There was 21.6％ of Mg found in vermiculite. Activated carbon had the largest specific area. Adsorption characteristics of P and NH4+ -N by these 5 substrates were well fitted by Langmuir adsorption isotherms. The highest P adsorption capacity was found in fly ash with 10. 37 mg/g,and the highest NH4+ -N adsorption capacity was noted in vermiculite with 7.1 mg/g. In P combined with NH4+ -N solutions , the P or NH4+ -N adsorption capacity of all substrates were lower than those in P or NH4+ -N solutions. Fly ash, with high adsorption capacity both in P and NH4+ -N, was recommend as an ideal substrate in removing P and N in polluted water.关键词
基质/磷/铵态氮/Langmuir等温吸附曲线Key words
substrate/ P/ NH4+ -N/ Langmuir adsorption isotherms分类
资源环境引用本文复制引用
张敏,郭彬,傅庆林,景金富,李华,丁能飞,刘琛,林义成..不同基质去除水中氮、磷的作用机理及效应[J].水土保持学报,2011,25(3):63-67,5.基金项目
水体污染控制与治理科技重大专项(2008ZX07101-006) （2008ZX07101-006）
公益性行业(农业)科研专项经费项目(200903001) （农业）
浙江省重大科技攻关项目(2005C12025) （2005C12025）
浙江省科技计划面上项目(2009C33121) （2009C33121）
