【摘要】 河流外源截污与治理后,底泥污染物的释放成为河道污染的主要因素之一。基于动态模拟实验,研究不同扰动条件和不同底泥污染物浓度,对底泥中TN、NH₃-N、TP和COD释放的影响。研究结果表明:高扰动强度增加了TN和COD的释放通量,缩短了TP的吸附/解吸平衡时间,对其他指标影响较小;底泥污染物浓度与污染物平衡释放量的相关性较弱,仅TN的平衡释放量与底泥浓度的拟合关系较好（最大R²为0. 798）。更多还原

【Abstract】 With the external sewage interception and sewage treatment,the release of pollutants from sediments became one of the main factors of river pollution. Based on dynamic simulation experiments,this study researched the effects of different physical perturbing and different sediment pollutant concentrations on the release of TN、NH₃-N、TP and COD from the sediment. The results showed that high intensity perturbation increased the release flux of TN and COD,and shortened the release equilibrium time of TP,but had little effect on other pollutants. The correlation between the pollutants concentration of sediment and the equilibrium release of sediment was weak,while only the equilibrium release of TN had a good fitting relationship with the sediment concentration（ the maximum R² was only 0. 798）.更多还原