Patent ID: 6592753
Filing Date: 2003-07-15
Classification: B01D,Y10S

Abstract:
An oil recovery system, comprising:an inlet unit used for introducing oil-contaminated water into the system; a piston pump connected to said inlet unit so as to introduce oil-contaminated water from the inlet unit into a four-stage segregation tank while preventing oil from being decomposed into micro particles; and the four-stage segregation tank connected to said piston pump and provided with one inlet port, and divided into; a first chamber connected to the piston pump so as to receive oil-contaminated water from said pump and primarily process the oil-contaminated water, with an oil floating unit being provided at a top portion of the first chamber for introducing the oil-contaminated water from the piston pump into the first chamber, said oil floating unit having a hopper-shaped configuration and consisting of first and second porous filters held in the first chamber by a holding member, said first chamber also having a valved water discharge pipe at a bottom wall thereof; second and third chambers used for secondarily and finally processing the oil-contaminated water so as to separate oil from water, said second and third chambers being individually provided with a plurality of horizontal diaphragms at a top portion thereof for separating oil from water, with areas of the diaphragms gradually increasing from a top diaphragm to a bottom diaphragm, each of said second and third chambers also having a valved water discharge pipe at a bottom wall thereof; and a fourth chamber used for receiving oil from the third chamber prior to discharging the oil from said tank, said fourth chamber having a valved oil discharge pipe at a bottom wall thereof.