【摘要】 以胜利油田孤岛采油厂的油泥砂为研究对象,根据其产生油泥砂的特征,设计了油田高含油泥砂无害化处理工艺。该工艺包括两部分,先进行油、泥、砂分离-提油,再将提油后的泥砂采用混晶包容固化的工艺过程。室外工程试验结果表明:原来油泥砂中原油含量平均为24.77%,经该工艺处理后,泥砂中原油平均含量为1.26%,平均去除率达到94.91%。处理后的泥砂采用混晶包容固化,当固化剂与泥砂混合比例为1∶4～1∶6时,强度即可达到甚至超过普通水泥砖。固化块浸出液中COD远远低于污水综合排放标准(GB 8978—1996)的一级标准,而油浸出量未检出。该工艺真正实现了油泥砂的无害化和资源化,并为石油污染的土壤、岸滩沉积物等的无害化、资源化处理提供了技术借鉴。更多还原

【Abstract】 A decontamination process was designed for treating high-oil-content sludge from Gudao Oil Plant,Shengli Oil Field,Shandong Province,P.R.China.It followed the process of separating oil from sludge-extracting oil-solidizing the treated sludge with crystal-mixing and grid-containing technique.experimental results showed that the oil content in the sludge decreased from 24.77%to 1.26%,an average decontamination rate of 94.91%.The treated sludge was then solidified with crystal-mixing and grid-containing technique.When the ratio between solidification agent and sludge varied between 1∶4and 1∶6,strength of the mixture exceeded that of common concrete bricks.In addition,COD and oil content of the leachate extracted from the solidified sludge were measured and results showed that the former increased slightly,but still far lower than the discharging standard of Grade I water stipulated in Integrated Wastewater Discharge Standard of P.R.China(GB 8978-1996),while the latter was not detected.The technology can really realize the harmless disposal and resourceful utilization of oily sludge,and hence a technological reference for the decontamination and reutilization of oily sludge in oil fields or coastal regions.更多还原