采用铁盐溶液浸渍的方法对黄磷水淬渣进行改性，以提高其对废水中As （Ⅲ）的去除效率。考察改性过程中铁盐种类、铁盐浓度、熟化温度及熟化时间四个因素对改性黄磷水淬渣吸附砷性能的影响：浸渍铁盐溶液为FeCl3、浓度0．8 mol／L、熟化温度80℃和熟化时间6 h。通过比表面积和孔径测定（ BET）、扫描电镜（SEM）和傅里叶红外光谱（ FT-IR）对改性前后黄磷水淬渣的表面性能和结构进行表征。在最佳条件下制备的改性黄磷水淬渣比表面积增大、Fe3＋和-OH含量升高，对废水中As（Ⅲ）的去除率可达到99．1％。改性后的黄磷水淬渣表面有铁负载，增加了其对废水中As（Ⅲ）的吸附性能。
Phosphorus slag was modified by ferric salts dipping in order to improve the removing efficiency of As(Ⅲ)in wastewater .The effects of the classes and concentrations of ferric salts ,curing temperature , and curing time in the process of modification on the adsorbing capacity for As (Ⅲ) were investigated by using modified phosphorous slag .The optimal preparation conditions are as follows:0.8 mol/L of FeCl 3 dipping , curing temperature 80℃and curing time 6 h.The methods of BET , SEM and FT-IR were used to analyze the difference of surface structure and adsorption performance of the modified and un -modified phosphorous slag .After modification , the specific surface area of phosphorus slag increased , the content of Fe3+and-OH rised, and the removal rate of As (Ⅲ)in wastewater was improved to 99.1%.The surface of modified phosphorous slag with iron load , and adsorbing capacity for As (Ⅲ) in wastewater increased .
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