Solid-liquid separator

Details Solid-liquid separator Solid-liquid separator

B - Operations, Transporting

01

D

B01D 24/36 (2006.01) B01D 21/00 (2006.01) C02F 1/52 (2006.01)

Patent

CA 2338898

An object of the present invention is to provide a compact solid-liquid separator having a high water surface loading which can limit pollutant's outflow even when flocs are insufficiently pelletized. The present invention provides a solid-liquid separator comprising a separation tank, a treated water outlet (16) at the top of the tank, a sludge outlet (17) at the bottom of the tank, a draft tube (3) near the center in an upper inner zone of the tank and connected to a raw water inlet pipe (2), horizontally rotatable multistage stirring blades A (5) in said draft tube, horizontally rotatable multistage stirring blades B (6) immediately below said draft tube, a horizontal baffle (8) below said stirring blades B, a filter medium layer (10) consisting of a floating filter medium around the outside of said draft tube above said stirring blades B, and a screen (12) fixed below the water level above said filter medium layer, and optionally a filter medium-receiving screen (13) around the lower outside of said tube in combination with stirring rods (14) above said screen or aeration nozzles.

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