Sludge belt apparatus for clarifying liquid charged with solid m

Details Sludge belt apparatus for clarifying liquid charged with solid m Sludge belt apparatus for clarifying liquid charged with solid m

1985-07-31

1987-03-03

Wyse, Tom

Liquid purification or separation

With means to add treating material

With distinct reactor tank, trough or compartment

210220, 2105121, B01D 2108

Patent

active

046473726

ABSTRACT:
A cloudy liquid to be clarified is inserted, after twice receiving flocculation additive, into the bottom of a belt of sludge (4a) in a clarification chamber (4) via a plurality of injectors (22) distributed over the area of said chamber. Uniform distribution of overall flow between these injectors is ensured by internal head loss. The clarified liquid is removed via an upper overflow (4b).
Each injector is constituted by a flat cyclone and forms a jet which is highly diverting from its vertical axis in such a manner that the injected flowrate spreads out over an expansion zone belonging to said injector and meeting the expansion zones of adjacent injectors. Further, these jets set up swirling motion which prevents the formation of a layer of sludge having insufficient permeability. The sludge formed in the chamber (4) is directed via a central well (7) towards a secondary clarification sludge (3) situated beneath said chamber and supplying both clarified liquid and dense sludge.

REFERENCES:
patent: 2573941 (1951-11-01), Walker et al.
patent: 3397788 (1968-08-01), Duff et al.
patent: 4346000 (1982-08-01), van Drooge
patent: 4376045 (1983-03-01), Siskind

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