Skimmer apparatus for sewage settling tanks and the like

Details Skimmer apparatus for sewage settling tanks and the like Skimmer apparatus for sewage settling tanks and the like

1976-02-02

1977-03-08

Lutter, Frank W.

Liquid purification or separation

With movable support

Float

210523, 210525, 210DIG25, B01D 2302, B01D 3500

Patent

active

040111644

ABSTRACT:
A scum removal system for sewage settling tanks and the like employs a floating skimmer system which is lowered onto the surface of the liquid at one end of the tank and then moved toward the opposite end where floating materials collected by the skimmer are passed into a scum trough. At the trough end of the tank, the skimmer is raised from the surface of the liquid and returned to the first end while being held above the liquid surface. Continuous flow into the scum trough is prevented by a floating beach hinged to the scum trough. The beach is submerged as the skimmer approaches so that flow over the submerged beach carries the collected materials into the scum trough. Flow over the submerged beach is controlled by the depth as well as the length of time that the beach is held beneath the surface.

REFERENCES:
patent: 3081879 (1963-03-01), Schroeder et al.
patent: 3204773 (1965-09-01), Lind
patent: 3498465 (1970-03-01), Klump et al.
patent: 3517812 (1970-06-01), Bucchioni et al.
patent: 3565254 (1971-02-01), Latimer
patent: 3608728 (1971-09-01), Trimble
patent: 3693801 (1972-09-01), Pogonowski
patent: 3756414 (1973-09-01), Crisafulli
patent: 3756418 (1973-09-01), Pentz
patent: 3872017 (1975-03-01), Bishop
patent: 3923661 (1975-12-01), Crisafulli

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