Liquid conditioning and settling tanks
OwnerRichard Pierpont Mooreinventor
Life of this patent
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Abstract
A liquid conditioning and settling tank employing the sludge blanket principle in which a body of floc particles termed a sludge blanket is maintained in suspension in the lower portion of the tank by agitation. The floc particles gather impurities in the liquid being treated and thus gain weight. The heavier fraction of these particles settle to the base of the tank whence they are removed. In such a tank a sump is located with an overflow lip at or below the upper level of the sludge blanket. The lighter fractions overflow into the sump where they are able to settle more readily for removal from the tank through the base of the sump.
Claims15
A liquid conditioning and settling tank including a substantially flat base, a wall surrounding the base, means partitioning the lower portion only of the tank into first and second compartments, means for feeding liquid to be treated into the first compartment, velocity reducing take off means for removing treated liquid at or near the upper surface of the liquid, from the upper potion of the tank above the partition means, means for maintaining a sludge blanket in the first compartment, a first sludge outlet in or near the base of the first compartment, means for inducing sludge particles which have settled on the base of the first compartment to move to the first outlet, an overflow sill at an upper end of the partition means over which to transfer sludge particles from the surface of the sludge blanket into the second compartment, the second compartment defining a substantially quiescent zone in the tank, means for concentrating sludge particles in the second compartment and means for discharging concentrated sludge from the second compartment.
Dependencies are inferred from the claim text.