Separator device

A method for separating grease from waste water by means of a separator device, the separator device comprising a two part receptacle with an upper first part and a lower second part separated by an inclined intermediate plate, the receptacle having an inlet port for waste water formed in the upper first part, a discharge port for separated waste water formed in the lower second part, discharge means, and an overflow pipe fluidly communicating between the receptacle first part and the receptacle second part, the method comprising:

• supplying waste water through the inlet port to the receptacle upper first part;
• separating the waste water by gravity in the receptacle upper first part to form an upper grease layer, an intermediate separated waste water layer, and a lower sludge layer on the inclined intermediate plate;
• feeding the separated waste water from the separated waste water layer through the overflow pipe from the receptacle upper first part to the receptacle lower second part;
• removing at least one of a group of materials consisting of grease from the grease layer and sludge from the sludge layer from the receptacle upper first part through the discharge means;
• and
• collecting separated waste water in the receptacle lower second part for discharge from the discharge port.