中文摘要：

选用自制的腐植酸钠、碱水和商用的腐植酸作为洗涤剂,对落地原油中度污染的土样进行了淋洗.结果表明：3种洗涤剂对污染土样都有一定的洗涤效果,且除油率相差不大.在洗涤温度为60℃、洗涤次数为1次、洗涤时间为3 h、pH值都是9的条件下,碱水、商用腐植酸和自制的腐植酸钠的最大除油率分别是45.3%,30.5%和28.3%,对应洗涤剂的质量浓度分别为200,100,200 mg/L.由于自制的腐植酸钠成本低、易于加工,因此,它可以作为商用腐植酸或者碱水的替代品用于处理落地原油中度污染的土壤.

英文摘要：

The self-made sodium humate,alkaline solution and commercial humic acid are used as reagents to wash the soil samples that are moderately contaminated by ground crude oil in this paper.The results show that all three reagents can remove oil,and the removal efficiency is not considerably different.Alkaline solution,humic acid and self-made sodium humate reach their maximum removal efficiency which are separately 45.3%,30.5% and 28.3%,on condition that the soil samples are washed for 3 hours at 60℃ only one time and all three reagents are at pH=9.The relevant concentrations of them are respectively 200,100,200 mg/L.Self-made sodium humate can be used as the substitute for humic acid or alkaline solution to dispose of soil moderately contaminated by ground crude oil due to its low cost and easier production.