Vertical looped reactor tank with delayed air release feature

Details Vertical looped reactor tank with delayed air release feature Vertical looped reactor tank with delayed air release feature

1985-06-12

1986-12-16

Wyse, Tom

Liquid purification or separation

With gas-liquid surface contact means

210220, 261123, C02F 312

Patent

active

046295593

ABSTRACT:
An apparatus for use in an activated sludge process for treating wastewater wherein raw sewage or the like is mixed with activated sludge and the resulting mixture is circulated in a confined aerated tank (usually in the form of additional subsurface aeration) so that the mixture follows a predetermined vertical flow cycle through a plurality of flow passageways created by gas impermeable baffle means in order to optimally increase the retention time of aerating air in the tank. The retention time of the air is increased by means of at least one secondary horizontal baffle means specifically designed to collect large bubbles of air trapped beneath said gas-impermeable baffle means and to be permeable to gases, so as to provide additional air/liquid surface area to escaping air. The secondary baffle is situated adjacently above and substantially parallel to the gas impermeable flow directing baffle means.

REFERENCES:
patent: 3101321 (1963-08-01), Austin et al.
patent: 3642615 (1972-02-01), Wieferig
patent: 3703462 (1972-11-01), Smith
patent: 3776841 (1973-12-01), Torpey

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