改性沸石的磷钝化影响因素研究  

The Factors Influencing P Inactivation Efficiency of Modified Zeolite

作　　者：杨永琼[1,2] 陈敬安[1] 曾艳[1] 王敬富[1,2] 杨海全[1,2] 计永雪[1,2] 

机构地区：[1]中国科学院地球化学研究所环境地球化学国家重点实验室,贵阳550002 [2]中国科学院大学,北京100049

出　　处：《地球与环境》2013年第6期625-630,共6页Earth and Environment

基　　金：国家科技支撑计划项目(2011BAC02B0201);贵阳市科技计划项目(筑科合同[2011103];[2010]筑科农合同字第5-2号)

摘　　要：通过实验室模拟,对比研究了在不同环境条件下(温度、pH值、溶解氧和上覆水磷浓度)改性沸石的沉积物磷钝化效率。结果表明:改性沸石能有效减少不同环境条件下沉积物磷的释放量,具有较好的钝化效果,同时可吸附减少水体重金属离子含量,对水环境基本上没有负面影响。改性沸石对沉积物磷的钝化效率主要受水体pH值控制,上覆水体溶解氧含量、水体温度和上覆水磷含量对钝化效果影响较小。The P inactive efficieneies of modified zeolite under various ini＊luencing factors including temperature, p H, DO and P concentrations, were studied in this paper. The results showed that modified zeolite can effectively reduce phosphorus release from sediments under different conditions, and does not release poisonous elements into the water. The DO of the overlying water has low or no impact on P inactive efficiency. However, pH is a major factor, but temperature and P concentrations have less impact.

关 键 词：改性沸石 沉积物 磷 钝化 影响因素 

分 类 号：X524[环境科学与工程—环境工程]