Patent ID: 6482320
Filing Date: 2002-11-19
Classification: B01D,C02F

Abstract:
A solid-liquid separator comprising:a separation tank; a raw water inlet pipe; a treated water outlet at the top of the tank; a sludge outlet at the bottom of the tank; a draft tube near the center of the tank in an upper inner zone of the tank, said draft tube being connected to said raw water inlet pipe; horizontally rotatable multistage stirring blades A located in said draft tube; horizontally rotatable multistage stirring blades B located immediately below said draft tube and having a greater diameter than that of said draft tube; a horizontal baffle below said stirring blades B; a filter medium layer comprising a floating filter medium around the outside of said draft tube above said stirring blades B; and a screen fixed below a water level above said filter medium layer for impeding outflow of said filter medium, whereby the treated water having passed through said screen is discharged from said treated water outlet.