环境因子对底泥污染物化学钝化修复的影响研究

Effects of Environmental Factors on Sediment Pollutants Chemical Passivation Repair

通过模拟试验研究了环境因子扰动、p H值以及溶解氧水平对底泥钝化剂钝化效果的影响规律。结果表明,不同扰动状态下,PAC对COD,TP,TN的抑制效果均随着扰动程度的加强而增大;不同p H值条件下,PAC对COD,TP,TN均有一定的抑制效果,抑制效果随酸性的增强而降低,也随碱性的增强而降低,在p H值为6~8时抑制效果相当,且弱碱性条件下效果最好;不同溶解氧水平下,PAC对TP的释放抑制效果明显,对COD和TN有一定的抑制作用。

Through simulation experiments,it is studied the influences of environmental factors disturbance,p H and dissolved oxygen levels on passivation effect of sediment. The results show that under different disturbance state,the inhibitory effect of PAC on COD,TP and TN increases with the increase of disturbance; under different p H conditions,PAC has a certain inhibitory effect on COD,TP and TN,the inhibition effect decreases with the increase of acidity,also decreases with the increase of alkaline and when PH value is 6- 8,the inhibiting effect is quite the same and under slightly alkaline,the effect is the best; at different levels of dissolved oxygen,the release suppression effect of PAC on TP is obvious and it has some certain suppression on COD and TN.