为了确定伊拉克某油田污水处理站含油污泥处理设备，对比分析了板框式压滤机、带式压滤机、离心式脱水机和叠螺式脱水机等常用含油污泥机械脱水设备的技术特点和应用范围，并对叠螺式脱水机实际运行情况进行了现场调研。分析和现场调研结果表明，叠螺式脱水机集污泥浓缩和脱水于一体，具有出泥含水率低、占地面积小、易分离、不堵塞，可以实现自清洗，可用于低浓度污泥等特点，叠螺式脱水机简化了油田污泥处理工艺流程，降低了地面工程建设投资及运行成本，是含油污泥进行脱水的较好选择。介绍了伊拉克某油田污水处理站含油污泥叠螺式脱水机的选型设计。%In order to find suitable oily sludge treatment equipment for a produced water treatment station of an oilfield in Iraq, the characteristics and application scope of widely used mechanical dewatering equipments including plate and frame filter, belt press filter, decanter centrifuges and screw press filter were compared and analyzed, and the application condition of screw press filter was investigated at site. The results of the analysis and site survey showed that, screw press filter was an integrated equipment with functions of concentrating and dewatering, which characterized by low water content of filter cake, small occupied area, easy to separate, no blocking, can realize self-cleaning and suitable to low concentration sludge. Screw press filter can simplify oily sludge treatment process, save the cost of engineering construction and operation, which is a better choice for oily sludge dewatering. The type selection design of screw press filter adopted in the produced water treatment station of an oilfield in Iraq was introduced.
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