Abstract: The treatment conditions of centrifugal deoiled sludge are investigated. As a result, the optimum operation conditions are obtained. The dehydration rate can reach 92.17% when deoiled sludge are first stirred for 9 min before centrifugation, then centrifuged at 3 000 r/min centrifugal for 20 min speed, under conditions of 10 mL centrifugal additive, 4 g handling capacity and 4∶1 of the deoiled sludge and scum mud. In addition, it is demonstrated that stirring before centrifuging is helpful to improve the dehydration rate of oily sludge.

Key words: Oily sludge,     , Tank bottom sludge,    , Scum mud,     ,  Centrifugation,    ,  Dehydration rate

摘要： 采用药剂法对除油后的罐底泥泥渣与浮渣油泥进行离心处理, 以脱水率为指标, 确定达到最佳分离 效果时的操作条件。结果表明, 离心转速为30 0 0r /m i n, 离心时间为2 0m i n, 离心助剂加入体积为1 0mL, 离心前搅 拌时间为9m i n, 处理量为4g, 药剂法处理后的泥渣与浮渣油泥的最佳质量比为4∶1, 在此最佳工艺条件下, 脱水率 可达9 2. 1 7%。另外, 研究表明离心前的预处理( 搅拌) 有助于提高油泥的脱水率。

关键词: 含油污泥,  , 罐底泥, 浮渣泥, 离心, 脱水率