| 摘要 |
A method and a plant serving the purpose of purifying water with ozone from especially oxidizable impurities. The plant comprises a purification basin (3) for the contaminated water, an ozone source (1) for, when in operation, supplying the plant with ozone for purification of the water, a reaction container (2), which, when in operation, partly is supplied with water from a water source to a predetermined level in the container by means of a first pressure pump (8), partly is supplied with ozone under pressure from the ozone source via a gas conduit with a second pressure pump (7), which preferably is a spark-free membrane pump. At the bottom of the basin is placed a first set of nozzles (12) which via at least one first water conduit (10) is connected to the water in the reaction container. A second set of nozzles (17) which, at the bottom are placed in the basin at a distance from the first set of nozzles, are connected to at least one second water conduit (18) which is connected to the ozone source as well as to a water source and has a third pressure pump (19) for, when in operation, driving the water through the conduit with a pressure which is smaller than the pressure in the reaction container. The plant can with less use of ozone efficiently purify the water from impurities. The additional ozone is recycled in an economic expedient way instead of being released into the environment and endangering the surroundings. Suspended and dissolved impurities in the waste water can be brought to flocculate without addition of chemicals. |
