| 摘要 |
A system for extracting moisture from sludge of the type handled by municipalities and industries. The system involves the use of a feed line where the sludge is mixed with a chemical treating agent adapted to achieve flocculation. The sludge is conveyed, with or without some partial separation of moisture, to a progressive cavity continuous press for feeding of the sludge through the press. The press is of the type employing a slotted or screened housing with an interior shaft so that the cavity of the press is defined between the shaft and the housing. The size of this cavity progressively decreases from the inlet end to the outlet end of the press whereby the mixture is gradually compressed as it moves through the press. Moisture contained in the mixture is thereby extracted through the housing which is designed to at least minimize passage of solids. A discharge chamber is located at the outlet end of the press for collecting the partially dehydrated mixture. Portions of the sludge may be diverted prior to entry into the progressive cavity continuous press and conveyed to a separate collection site whereby a sludge product with an intermediate moisture content becomes available.
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