Patent ID: 8206585

Claim:
An automatic oil-water separation and recovery device comprising: a cylindrical tank; an oil collector on a top of the cylindrical tank, wherein the oil collector links to an oil recovery pipe; an inflow pipe at the top of the cylindrical tank which leads untreated water into a pre-separation regulating water distributor in an upper part of the cylindrical tank, the pre-separation regulating water distributor is in a shape of an obconic bell mouth and includes a plurality of concentric ridges on an inner wall of the obconic bell mouth, wherein the inflow pipe links to a lower mouth of the obconic bell mouth; an outflow collector at a lower part of the cylindrical tank on which a bar-shaped oil-water separation unit is secured, the said outflow collector having an outlet, wherein the oil-water separation unit is made from at least one of stainless steel and plastic antipriming pipe firstly wrapped with an unwoven cloth, and then taped with a wire, and outside the wire the antipriming pipe is further wrapped with a nonwoven cloth, further wherein the unwoven cloth, the wire, and the nonwoven cloth are made of the same highly hydrophilic oil-resistant material.