Oily sludge produced in the course of production and processing con-tains harmful substances and higher heating value,which needs both treatment and com-prehensive utilization.

• 石油开采和加工过程中产生的含油污泥，带有有害物质和较高的热值，既需处理又可综合利用，这是一个复杂而又重要的课题。