pH 值对有机磷在弱透水层中迁移转化的试验模拟

为研究渗透水pH 值对有机磷通过弱透水黏土层迁移转化的影响规律，采用黏性土层充压渗透装置模拟污染潜水中有机磷渗透通过弱透水层的迁移转化过程。研究发现，有机磷组分通过弱透水层的迁移能力总体较弱，不同pH 值条件下有机磷的矿化率为93. 5% ～ 99. 95%; 在进水pH 值为5. 5 ～ 8. 5 时，进水pH 值越高，土层中磷酸酶的活性也越高，降解转化有机磷的能力也越强; 黏土对有机磷的阻滞能力也增强。进水pH 值为5. 5 时，迁移率为6. 5%; 当pH 达到8. 5 时，矿化率明显增加，迁移率＜ 0. 05%，使其不易渗入深层地下水引起污染。

Experimental simulation on migration and conversion of organophosphor by pH value in aquitard

In order to study the effect of pH value on migration and conversion to organophosphor in permeable clay,permeation and pressure equipment were adopted to simulate the migration and conversion process of organophosphor permeating the aquitard in the polluted aquifer.It indicates that the migratory capacity of organophosphor in aquitard is weak,while the mineralization rate of organophosphor is between 93.5% and 99.95% with different pH conditions.During pH value as 5.5 to 8.5,the activity of acid phosphatas...