Patent ID: 8025156
Filing Date: 2011-09-27
Classification: B01D

Abstract:
1. A vertical cylindrical apparatus for solid-liquid separation using compressed air as the force for dewatering, said apparatus comprising: a housing having an interior and an enclosed top end with a port for slurry injection into a chamber in said housing, inner and outer screens that define said chamber, wherein said inner screen is centrally disposed in said chamber and includes first and second flights that extend a vertical length of said inner screen, a hinged door disposed at a bottom end of said housing, said hinged door having an open position and a closed position, a screen covered area with a first filtrate drain adjacent said hinged door, wherein said inner screen is in fluid communication with said first filtrate drain, a ring attached to an outer edge of said first and second flights, wherein said ring maintains a proper clearance between said outer edges and said outer screen, a first air valve in fluid communication with said inner screen, a drive motor for turning said inner screen and said first and second flights within said housing.