| 摘要 |
Contaminated liquid or sludge clarification is accomplished by the use of a basic one or a series of operatively connected and vertically extending units or devices of the invention, each of which employs a hose that is spiraled around a cylindrical container wall whose upper end is open to an overflow weir from which recovery of lower specific gravity clarified liquid is effected and whose lower end is open and connected to a cone or funnel-shaped wall that defines a receiving and delivering chamber for separated-out heavier specific gravity contaminating liquid, sediment, viscous or thickened material. The hose of the basic unit is adapted at its upper end to receive the contaminated liquid, sludge or the like and any suitable chemical flocculant, precipitant, or coagulant, such as a polyelectrolyte, that may be injected or added to the contaminated liquid before it is introduced therein. The hose is adapted to thoroughly mix the heavier specific gravity material content with the coagulant as the liquid charge moves downwardly in a somewhat slowly swirling path therein. A nozzle is connected to the lower end and along the inside of a lower end portion of the cylindrical wall to deliver its contents in a substantially vertically laminated relation within the container above and adjacent to an upper end portion of the cone-shaped wall. When, as contemplated, two 23 or more of the units or devices are to be used in series progression to work in a vertically extending series of sludge feed-in operating units, the lower end of the cone-shaped wall of each upper unit is provided at its lower end with delivery pipe or tubing that extends downwardly along the central vertical extent of the next lower unit to discharge its heavier specific gravity or contaminate material through a pinch valve or the like into the cone of the next lower unit to combine with the contaminate material separated out or processed in the next lower unit, and then with such material to be discharged therefrom. When additional units are connected in series delivery progression, then the "down" or delivery pipe of each succeeding lower unit is enlarged progressively to take care of and also deliver the amount of greater specific gravity material that is being separated-out and collected by an uppermost unit of the series. 24
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