| 摘要 |
PROBLEM TO BE SOLVED: To provide a vacuum deaeration apparatus allowing reduction of installation and apparatus costs in installing a vacuum deaeration apparatus.SOLUTION: A vacuum deaeration apparatus utilizing a water head pressure includes a deaeration tower body which is provided with a packed layer of a gas-liquid contact material in its gas-tight inside, supplies to-be-treated water from above the packed layer and discharges treated water from a treated water discharge outlet under the packed layer and also discharges the inside gas by evacuating means, a connection pipe discharging the treated water from the treated water discharge outlet and a treated water tank having a water level of stored water lower than the lower part of the packed layer by a height H corresponding to the height or higher at which the vacuum of the deaeration tower body is kept with respect to the atmospheric pressure, with the water level set constant above the lower end of the connection pipe. |
