Combined settling and liquid storage tank

Details Combined settling and liquid storage tank Combined settling and liquid storage tank

1983-01-12

1984-12-25

Fisher, Richard V.

Liquid purification or separation

Serially connected distinct treating with or without storage...

One unit inside another

2102571, 210519, 2105321, 210534, 210536, B01D 2100

Patent

active

044902557

ABSTRACT:
A cylindrical storage tank of large diameter and depth is concentrically surrounded by a settling tank that has a width to internal diameter ratio that provides essentially plug flow. Liquid containing suspended particles capable of separation by settling is introduced into the upper part of a body of liquid in the settling tank at a zero radius of the tank at a controlled rate and flows slowly in both directions around the storage tank to a weir which extends no more than about halfway around the storage tank and is bisected by a 180.degree. radius of the tank. A slurry of particle-laden liquid is drawn from the lower part of the settling tank, and relatively particle-free surface liquid flows over the weir into the storage tank from which it is drained at a controlled rate.

REFERENCES:
patent: 976923 (1910-11-01), Rothwell
patent: 3147221 (1964-09-01), Johnston
patent: 3349030 (1967-10-01), Savage
patent: 3796321 (1974-03-01), Kosonen
patent: 3849311 (1974-11-01), Jakubek
patent: 3864257 (1975-02-01), Shaffer
patent: 3971719 (1976-07-01), Peters
patent: 4122016 (1978-10-01), Tao et al.
"United Ash Sluicing System", (6S-64R, .COPYRGT.1964), pp. 8 and 9.
United Conveyor Corporation Blueprint, Drawing No. 523-54171-6 (1968).
United Conveyor Corporation Blueprint, Drawing No. 528-4351-4 (1976).
United Conveyor Corporation "Utility Bottom Ash Conveyor Systems", (.COPYRGT.1981), p. 9.

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