| 摘要 |
PROBLEM TO BE SOLVED: To send raw water stored in a raw water tank from a first treating tank to each tank on the downstream side thereof by a water falling system by head to make aeration treatment by auxiliary tanks, to favorably make treatment by microorganisms in the treating tanks and treatment by ozone and also to provide an inexpensive type water purifier by simple constitution. SOLUTION: In a water purifier A for purifying raw water, plural first treating tanks 1 consisting of a first treating tank 5, a second treating tank 6 and the like for making purifying treatment by microorganisms connected from the upstream side of raw water supply is provided, an ozone tank 4 for receiving ozone and performing ozone treatment is connected to the downstream side of the treating tanks 1, and a raw water tank 2 for storing raw water tank is provided on the upstream side of the treating tanks 1. Water is sent to the first tanks 5 from the raw water tank 2 by a water supply pump P, and also the treating tanks on the downstream side of the first tank 5 are connected by a water falling system by head so that they may be drained. To the treating tanks 1 such as the first tank 5 and the second tank 6, auxiliary tanks for receiving air and making aeration treatment while circulating the treated water in the treating tanks 1 are individually attached. |
