Method and system for recovering oil and removing oil from a resulting oil-water mixture

A method of scrubbing filter media contained in a filtering device wherein the media has contaminants associated therewith, the method comprising:

• containing at least some liquid in the filtering device with the media having contaminants associated therewith;
• directing a motive liquid into an eductor associated with the filtering device;
• inducing the media and liquid into the eductor and mixing the motive liquid with the media and liquid passing through the eductor;
• driving the media through a scrubbing section of the eductor and removing contaminants from the media and wherein the eductor discharges a slurry comprised of liquid, media and removed contaminants;
• discharging a portion of the slurry including removed contaminants from the filtering device while retaining the media;
• and
• continuing to direct motive liquid into the eductor and causing the slurry including the media to be circulated through the eductor and continuing to discharge at least some of the slurry having the removed contaminants therein.

A filtering device comprising:

• a vessel for containing filter media;
• an inlet for receiving feedwater to be filtered by the filtering device;
• an outlet for directing filtered feedwater from the filtering device;
• an eductor associated with the filtering device for scrubbing the media and removing contaminants from the media and generating a slurry containing a liquid portion, the media and removed contaminants, wherein the eductor is operative to cause a slurry, including the media, to be recirculated continuously over a selected period of time through the eductor;
• the eductor including a motive liquid port and a suction port, wherein the motive liquid port is configured to be operatively connected to a source of pressurized motive liquid;
• wherein the eductor is operative to mix motive liquid with the slurry and wherein the eductor is operative to induce the slurry including the media into the suction port;
• wherein the eductor includes a scrubbing conduit that scrubs the media as the media and slurry pass through the scrubbing conduit of the eductor, causing contaminants to be removed from the media;
• and
• wherein the filtering device includes a slurry discharge outlet for discharging a portion of the slurry during a scrubbing operation while separating the media from the discharged slurry and retaining the media in the filtering device.