Patent ID: 8900463

Claim:
A separator for separating waste water and solids from oils, comprising: an enclosure having a side with an inlet formed therein for coupling an influent comprising waste water, solids and oil into the enclosure, where the influent is drained into said enclosure and not pumped under pressure into said enclosure, the oils rising to a top of said enclosure and the waste water and solids migrating to a bottom of said enclosure; a discharge outlet formed in a top of said enclosure, said discharge outlet for carrying waste water and solids out of said enclosure, and said discharge outlet located in the top of said enclosure at an elevation higher than said inlet; a normally closed FOG outlet formed in a side of said enclosure for coupling oils separated from the waste water and solids out of said enclosure; said enclosure having a bottom area to which the solids migrate; the top of said enclosure engaging with plural sides, each said side sealed to the top of said enclosure to provide a sealed enclosure during operation except for said inlet and said discharge outlet; a collection head located adjacent to said bottom area of said enclosure, said collection head shaped so that liquids drained into said enclosure via said inlet momentarily pressurizes said enclosure and causes the waste water and solids in the bottom area to be suctioned into said collection head and forced out of said discharge outlet; an outlet tube connecting the collection head to said discharge outlet; and liquid drained into said enclosure via said inlet causes oils separated in said enclosure to move to the top of said enclosure and out of said FOG outlet when said FOG outlet is opened.