腐殖酸强化脱硫石膏改良油污盐碱土壤的研究

以腐殖酸为表面活性剂进行了脱硫石膏改良油污盐碱土壤的土柱实验,研究了不同洗盐条件下土壤渗透性能、电导率和pH值的变化规律。研究结果表明,油污显著影响脱硫石膏改良盐碱土壤的效果,淋洗前后油污土壤的碱化度仅从42.78%下降到37.72%;而加入腐殖酸表面活性剂后,油污盐碱土壤碱化度由42.78%下降到23.20%,淋出液电导率值显著增高,且pH值有所变化,证明加入腐殖酸表面活性剂可显著强化脱硫石膏改良油污盐碱土壤。

Effect of Humic Acid on Improving Oil Contaminated Saline-alkali Soil

To study the infiltration、electric conductivity and pH,columns of mixture of flue gas desulfurization by-product gypsum(FGD) with contaminated soil by oil was intensified by humic acid(HA)were used.The results showed that the effect of improving saline-alkali soil by oil was strongly after add the FGD;the exchangeable sodium percentage(ESP) of contaminated soil by oil was changed from the percentage of 42.78 to 37.72.Then,when the HA was added,the ESP of contaminated soil by oil was declined to 23.20%.The electric conductivity(EC) of filtrates was more,and pH was also changed.The advantage effects of saline-alkali soil to contaminated soil by oil and add the HA to not add were obviously.