灰漠土人工湿地基质对磷的吸附性能研究

研究了灰漠土作为人工湿地基质对磷的吸附性能，并与炉渣基质进行了对比试验。结果表明，灰漠土具有比炉渣更快的吸附速度，当吸附磷溶液初始质量浓度为10mg/L时，灰漠土和炉渣对磷的最大吸附量分别为92mg/kg和78mg/kg，并且两者对pH影响与离子干扰影响的响应均表现出相似的变化规律。灰漠土在西北干旱地区广泛存在，因此，可以完全替代炉渣作为人工湿地的除磷基质。

Performance of phosphorus adsorption on the gray desert soil used as a constructed wetland substrate

The phosphorus adsorption capacity of gray desert soil as a substrate has been studied and compared with that of slag from a boiler.The study revealed that the gray desert soil had higher phosphorus adsorption capacity than that of the slag.When phosphorous concentration in solution was 10 mg/L,the maximum phosphate adsorption of the gray desert soil was 92 mg/kg,and that of the slag was 78 mg/kg.The responses of the two substrates to pH and ion interference were almost the same.As the gray desert soils exist widely in the arid northwest area,they can substitute slag in constructed wetlands.