| 摘要 |
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.
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