Mixing chamber for thickening sewage sludge by means of a floccu

Details Mixing chamber for thickening sewage sludge by means of a floccu Mixing chamber for thickening sewage sludge by means of a floccu

1976-04-06

1977-05-10

Spear, Jr., Frank A.

Liquid purification or separation

With means to add treating material

Plural distinct separators

210203, 210205, 210400, B01D 3314

Patent

active

040226913

ABSTRACT:
A mixing chamber for thickening sludge, especially sludges in a sewage clarification plant by means of a flocculation agent in combination with an overflow drainage means wherein the sewage feed to the bottom of the mixing chamber enters a mixing zone and flows upwardly into an overflow at the top and out through a diversion means for the thickened sludge leading to a sedimentation belt or to a press filter, handling to the outside of the mixing chamber. The top of the mixing zone is widened by means of a flow section for the thickened sludge which is formed by dewatering through the perforated screen walls and the waste water is disposed downstream of the agitated mixing zone.
The sludge flows in an upward direction through the agitated mixing zone inside a common housing formed by the walls of the mixing zone and the flow section formed by the perforated screen walls in the dewatering section at the top while a spill zone is disposed directly above the dewatering section to permit the outflow of thickened sludge to the drainage station.

REFERENCES:
patent: 3230282 (1966-01-01), Campagne et al.
patent: 3285712 (1966-11-01), Matasa et al.
patent: 3531404 (1970-09-01), Goodman et al.
patent: 3896030 (1975-07-01), Bahr
patent: 3957210 (1976-05-01), Durr
patent: 3959126 (1976-05-01), Millward

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