Chemistry: molecular biology and microbiology – Apparatus – Including measuring or testing
Patent
1991-03-08
1993-08-24
Wityshyn, Michael G.
Chemistry: molecular biology and microbiology
Apparatus
Including measuring or testing
435289, 422184, 210603, 210DIG9, 220217, C12M 100, C12M 136
Patent
active
052388441
ABSTRACT:
A sludge digester having a main tank in conjunction with a gas-holding cover is disclosed. The cover includes a roof and a depending sideskirt which telescopes in relationship to the main tank. Positioned at the bottom edge of the sideskirt are a multitude of ballast members. A chamber, adapted to contain a quantity of liquid, is associated with the main tank. The sideskirt and the ballast members are submerged within the liquid contained within the chamber to form a gas tight seal of the cover with the main tank. The chamber also includes a system for maintaining a predetermined liquid level in the chamber dependent on the position of the ballast members in the chamber.
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Cook Lynn W.
Wight Jeffrey L.
Baker Hughes Incorporated
Beisner William H.
Wityshyn Michael G.
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