| 摘要 |
When treating water with ozone, chlorine or similar reagents, the problem arises of introducing the gas as inexpensively as possible at the extraction point which is frequently located in a considerable depth of water-typically 30 to 59 meters. It is proposed that the gas be introduced into a bubble column downflow reactor (7) in the region close to the surface by means of a mixer and the gas bubbles forming there be passed against buoyancy through the reactor to the lower end of the riser (3) of the pump arrangement, where it is intimately mixed with the fresh water drawn in. After passing through a gas separator (8) and a pump, a part of the heated water is recycled to the mixer (8). |
