石油是一种非再生性资源，由于消费者和使用矿物燃料产品的工业的大量需求，许多油田即将枯竭。
Petroleum is a non-renewable resource, and many oil fields are now getting depleted because of massive demand by consumers and industries that use fossil fuel products.
油田注汽锅炉的离子交换树脂系统在再生过程中要排放大量含盐废水，这部分废水中含有大量氯离子和硬度离子，外排后会对耕地造成不良影响。
A great deal of saline wastewater containing Cl -, Ca2 + and Mg2 + from the ion exchange system of steam boiler is discharged during the regeneration of resin.
立式圆柱形钢制储罐是油田、石油化工及相关企业广泛应用的储液容器，是石油和天然气资源开发的基础性设施，是能源利用、再生产和供给的重要设施。
So, it is the basic infrastructure at oil and natural gas resources development and the essential facilities in energy use, reproduction and supply.
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