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  • Publication Date: December 31, 1969
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    CN-103058448-BJuly 30, 2014李性伟, 刘文斌Oily sewage and sludge separation device
    US-8562829-B2October 22, 2013Hitachi Plant Technologies, Ltd.Magnetic separation apparatus and waste water treatment apparatus
    US-8597520-B2December 03, 2013Hitachi Plant Technologies, Ltd.Wastewater treatment method and wastewater treatment apparatus
    US-8801923-B2August 12, 2014Hitachi, Ltd.Wastewater treatment apparatus
    US-8808548-B2August 19, 2014Hitachi, Ltd.Magnetic separation apparatus and magnetic separation method, and wastewater treatment apparatus and wastewater treatment method
    US-8845894-B2September 30, 2014Japan Oil, Gas And Metals National Corporation, Hitachi, LtdFlocculation-magnetic separation system