| 摘要 |
The membrane type deaerator according to the present invention is characterized by the arrangement and connected condition of a plurality of membrane deaerator modules and a water sealed vacuum pump connected thereto. These modules are series-connected between a raw water supply line and a deaeration water supply line. A first vacuum pump is connected to a first deaerator module via a deaeration line, and a second vacuum pump to a second deaerator module via the deaeration line. These vacuum pumps are each provided with a seal water supply line which is used to send as seal water the raw water introduced from the water supply line thereinto to each of the first and second vacuum pumps, and a discharge line for the second vacuum pump is connected to the deaeration line for the first vacuum pump. In the membrane type deaerator thus formed, the deaeration performance is improved greatly, and a deaeration with dissolved oxygen concentration of several PPB can be carried out.
|
