Patent ID: 8506824

Claim:
A method for treating organic waste water and sewage and removing inorganic grit therefrom using a hydro-cyclone housing, the housing including a waste water and sewage inlet attached to an upstream portion of the housing, the housing including a wash water inlet attached to a downstream portion of the housing, the housing disposed at an angle from the horizontal, the steps comprising: introducing waste water and sewage under pressure through the waste water and sewage inlet into the upstream portion of the housing and creating a vortex with a cyclone spin; introducing high pressure wash water having a pressure greater than the pressure of the waste water and sewage through the wash water inlet and into the housing; combining the waste water and sewage with the high pressure wash water in the housing and creating an enhanced vortex for removing fine putrescible material in the waste water and sewage, and creating a high velocity water spin; throwing the inorganic grit in the high velocity water spin to an interior side of the housing by centrifugal force and separating the waste water and sewage and the wash water from the inorganic grit; discharging the waste water and sewage and the wash water out a treated water outlet in a top portion of the housing for returning it to a water treatment plant for further processing; and discharging the separated inorganic grit, as a concentrated grit liquid, through an apex in a bottom portion of the housing.