| 摘要 |
A rectangular clarifier of 1,000,000-2,000,000 gal/day capacity capable of simultaneously removing sludge and skimming floating solids from a clarifier tank using a series of hollow arms which sweep the base of the clarifier and depend from a hollow tube which has a main body below the surface of the liquid level in the clarifier so a differential head pressure forces sludge up the arms into the tube which also has an open top to skim floating solids from the surface of the tank as the tube is rocked back and forth to duck the opening beneath the liquid surface. One end of the tube is open to a sludge pit which is provided with a sump pump whereby when the liquid level in the sludge pit is lowered below the level in the clarifier tank, sludge from the tube flows into the sludge pit because of the difference in pressure.
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