水资源与水工程学报

LIU Xiaoa,HUANG Suilianga,b,c,LIU Xuegong.三种人工湿地填料对磷的吸附特性研究水资源与水工程学报[J].,2011,22(6):

三种人工湿地填料对磷的吸附特性研究

Study on phosphorous adsorption characteristics by three substrates

DOI：

英文关键词:constructed wetland substrate phosphorous adsorption isotherm adsorption kinetics

基金项目:国家自然科学基金项目(51079068); 天津市科技计划重点项目(09ZCGYSF00400、08FDZDSF03402); 国家水体污染控制与治理重大专项(2008ZX07314-005-001、2009ZX07209-001)

作者	单位
LIU Xiaoa,HUANG Suilianga,b,c,LIU Xuegong	南开大学环境污染过程与基准教育部重点实验室南开大学天津市城市生态环境修复与污染防治重点实验室南开大学环境科学与工程学院水环境数值模拟研究室天津市水利科学研究院

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中文摘要:

采用等温吸附和吸附动力学实验,研究了三种人工湿地填料页岩、陶粒和砾石对磷的吸附特性。结果表明:Freundlich和Langmuir模型均能较好地拟合各填料对磷的吸附特征,各填料对磷的理论饱和吸附量大小依次为页岩(527.992 mg/kg)>陶粒(328.165 mg/kg)>砾石(129.729 mg/kg);各填料对磷的吸附过程分为快、中、慢3个阶段,三种填料对磷的吸附速率依次为页岩>陶粒>砾石;准二级动力学方程、双常数方程和Elovich方程均能较好地描述人工湿地填料对磷的吸附动力学特征,但从相关系数来看,准二级动力学方程的描述更为准确。

英文摘要:

The phosphorous adsorption characteristics of three substrates(shale,haydite,gravel) in constructed wetland were studied by isotherm adsorption and adsorption kinetics experiment.The results showed that both Freundlich and Langmuir equations were well fitted for describing the adsorption characteristics of these substrates.The phosphorous theoretical saturated adsorption capacity of three substrates followed shale(527.992mg/kg)> haydite(328.165mg/kg)>gravel(129.729mg/kg).The process of adsorption could be d...

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