巢湖内源磷释放特点稳定性及化学控制研究-中国科技论文在线.PDF

　 环 　境 　科 　学 　研 　究 　　 第 19 卷 　第 5 期 Research of Environmental Sciences Vol. 19 ,No. 5 ,2006 巢湖内源磷释放特点、稳定性及化学控制研究 刘静静 , 汪家权 合肥工业大学 资源与环境工程学院 , 安徽 合肥 　230009 ρ( ) ρ( ) 摘要 : 以巢湖内源磷负荷为研究对象,通过实验室模拟 ,探讨了巢湖内源磷释放过程上覆水中 总磷 和 铁 之间的关系 , 重点研究了 pH 和溶解氧对内源磷释放的影响 ,并对实验前后沉积物中各形态内源磷的含量进行比较. 结果表明 :上覆水中 ρ( ) ρ( ) 总磷 与 铁 呈正线性相关 ;pH 相同时 ,厌氧条件下内源磷的释放量约是好氧条件的 916 倍 ; 无论是好氧还是厌氧条件 , 内源磷的释放量均是碱性条件最大,酸性次之 ,中性最小;铝磷、铁磷的释放量随 pH 增大而增大 ;在酸性条件下 ,钙磷是内源 磷释放的主要来源. 最后讨论了氯化铝和氯化铁控制磷负荷的作用. 关键词 : 内源磷负荷; 释放规律 ; 稳定性 ; 控制 ( ) 中图分类号: X524 　　　文献标识码 : A 　　　文章编号 : 1001 - 6929 2006 05 - 0059 - 06 Study on Rule of Pho sphorus Relea se and Stability in Chaohu Lake LIU Jingjing , WANGJiaquan School of Resources Science and Environmental Engineering , Hefei University of Technology , Hefei　230009 , China Abstract : The relationship between TP and Fe in the overlying water was appraised , focusing on the research on the pH , DO effects on internal P release in Chaohu Lake in simulated laboratory condition. At the same time , different internal P forms in the experiment were compared. The study showed : very close linear relations existed between TP and Fe in the overlying water on the releasing process ; the amount of released internal P in anaerobic condition under the same pH was about 916 times as much as that in aerobic condition ; the amount of released internal P was maximum in alkalinity , followed by acid condition , and minimum in neutral co