介绍该厂铬盐车间利用磷酸法对铬酸渣回收利用的两次技术改造及主要设备的结构，以供同行业厂家参考。
Twice technology reforms and the structure of main equipment for the recovery of chromic acid sludge by phosphoric acid method are described.
介绍用三辛胺萃取剂回收石油酸废水中环烷酸的工艺流程、萃取设备和工业试验结果。
Refinery waste water treating was tested with an annular centrifugal extractor for naphthenic acid recovery in Shengli Refinery of Qilu Petrochemical Company.
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