| 摘要 |
PROBLEM TO BE SOLVED: To provide wastewater treatment equipment capable of cooling condensate to a low temperature. SOLUTION: A high-temperature condensate supply pipe 2 is connected to a top face of a re-evaporation tank 1. A steam compressor 3 is connected to an upper part of the re-evaporation tank 1. A vacuum condensate return device 4 is connected to a lower portion of the re-evaporation tank 1. The vacuum condensate return device 4 is constituted by communicating an ejector 11, a tank 12 and a circulation pump1 13 by circulation pipe conduits 14. A part of the circulation pipe conduit 14 is branched to be connected to an excess water discharge pipe 18. The high-temperature condensate supplied from the high-temperature condensate supply pipe 2 into the re-evaporation tank 1 is partially re-evaporated, and sucked to the steam compressor 3. The cooled condensate is discharged to the outside of a system from the vacuum condensate return device 4 disposed at a lower portion. COPYRIGHT: (C)2007,JPO&INPIT
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