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在阿曼石油开发公司的Fahud租借地,为了对土壤中的石油烃类进行生物学治理开辟了一块土壤实验基地。它由7个区块组成,土质是钻井泥浆和砂的混合物,所含烃的浓度达到5·1×10-2(质量分数)。首先给这些土壤施肥,然后每周定期翻耕。每两个一组,每周两次分别用饮用水、反渗透装置的废水和微咸的井水进行浇灌,并且每月监测一次土壤内烃和金属的含量。作为一个控制,1个区块定期翻耕,但不浇灌。用盐水浇灌的区块土壤特性显著改善,超过淡水浇灌区块的效果。经过2005年3月到6月为期4个月的实施,含盐区块土壤内烃的含量已经低于2%,干燥区块中的含量仍然超过4%。研究发现,在含盐区块土壤内有更高的微生物活性和显著的微生物多样性。
At Fahud, Oman’s oil development company, a soil experiment site was opened for the purpose of biological treatment of petroleum hydrocarbons in the soil. It consists of seven blocks, the soil is a mixture of drilling mud and sand, containing hydrocarbons concentration of 5.1 · 10-2 (mass fraction). Fertilize these soils first and then periodically plow them on a weekly basis. Water was wedged twice every week for drinking water, reverse osmosis, and brackish well water twice a week, and the soil and hydrocarbons and metals were monitored monthly. As a control, a block is regularly tilled but not irrigated. The soil characteristics of the blocks irrigated with salinity improved significantly, exceeding the effect of fresh water irrigation blocks. After a period of 4 months from March to June 2005, the content of hydrocarbons in the soil in salt-bearing blocks has been below 2% and the content in the dry blocks still exceeds 4%. The study found higher soil microbial activity and significant microbial diversity within the salt-bearing soil.