公开(公告)号：US20170088441A1

公开(公告)日：2017-03-30

申请号：US15312190

申请日：2014-07-21

Applicant: East China University of Science and Technology

Inventor： Qiang YANG ,  Hao LU ,  Jiabin ZHU ,  Xiao XU ,  Yiqian LIU

IPC: C02F1/40

CPC classification number: C02F1/40 ,  C02F1/006 ,  C02F1/288 ,  C02F2101/32 ,  C02F2103/10 ,  C02F2103/365

Abstract: The present invention relates to a method and a device for deep oil removal from wastewater containing a low concentration of wasteoil. Wastewater containing a low concentration of wasteoil enters the device via an inlet and passes through a flow conditioner, causing the fluid to become uniformly distributed. Then, by means of a layer of oleophilic-hydrophobic fibers and hydrophilic-oleophobic fibers woven in a certain manner, a trace of oil droplets are captured and then coalesce and grow on the layer, and a trace of oil-in-water emulsion is demulsified and separated on the layer. Finally, by means of corrugation-enhanced sedimentation and separation, the oil droplets coalesce and grow and are then separated rapidly. The invention also provides a set of devices for implementing the method, having several parts such as a housing, a feed pipe, a flow conditioner, a fiber coalescence layer, a corrugation-enhanced separation layer, and a level gauge. The present technique is highly efficient in separation, consumes little power, and can operate continuously for a long period of time. Thus, this technique can be widely used in processes for treating wastewater containing a low concentration of wasteoil.