关键词: 含油污泥, 处理工艺, 油品回收, 污泥处置, 重金属

Abstract: Oily sludge is one of the major solid wastes generated in petroleum industry. It’s hazardous to the environment with huge output. Therefore, it is urgent to develop efficient treatment processes for oily sludge. This paper analyses the sources and main properties of oily sludge and its hazards to environment. It introduces thirteen oily sludge treatment processes in two categories which are used in oil recovery and sludge disposal. The paper compares and analyses these processes from such aspects as treatment efficiency, by-products, technical advantages and disadvantages, application and treatment cost and so forth. Meanwhile, it points out the importance of studying the migration and transformation of heavy metals in the sludge treatment process. It is recommended that the future oily sludge treatment processes select combination of different processes according to actual needs, aiming to realize oil recovery and efficient disposal of oily sludge at the same time.

Key words: oily sludge, treatment process, oil recovery, sludge disposal, heavy metal