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沙质滩涂受到石油污染后,滩涂-水系统中的石油污染物处在一个物理、化学、生物的相互联系和连续变化之中。为了定量地研究滩涂-水系统反应性石油污染物的动态变化规律,通过水动力弥散实验和一维对流、弥散模型确定了水分和溶质在滩涂-水系统的水-盐动力学参数和反应动力学参数。选择研究区代表性沙样S和Y进行试验,研究结果表明,对于沙质滩涂-水系统中的非反应性污染物,S沙样和Y沙样的渗透系数分别为1.95cm/min和0.76cm/min,弥散系数分别为0.156cm~2/min和0.463cm~2/min;对于沙质滩涂-水系统中的反应性污染物,S沙样和Y沙样的阻滞系数分别为2.55和2.30,分配系数分别为1.93cm~3/g和1.05cm~3/g。
After the tidal flat is polluted by petroleum, the petroleum pollutants in the tidal flat-water system are in a physical, chemical and biological interrelationship and continuous change. In order to quantitatively study the dynamic variation law of reactive petroleum pollutants in the tidal flats-water system, the water-salt kinetic parameters and reaction kinetics of water and solute in the tidal flats-water system were determined by the hydrodynamic dispersion experiment and the one-dimensional convection and dispersion models Learning parameters. The results show that for the non-reactive pollutants in the sandy beach-water system, the permeability coefficients of S and Y sand samples are 1.95 and 0.76, respectively cm / min, and the diffusion coefficients were 0.156cm ~ 2 / min and 0.463cm ~ 2 / min, respectively. For the reactive pollutants in the sandy beach-water system, the retardation coefficients of S and Y sand samples were 2.55 And 2.30, the partition coefficients were 1.93cm ~ 3 / g and 1.05cm ~ 3 / g, respectively.