| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a water treatment device capable of eliminating a boosting means of washing gas such as a blower and a compressor. SOLUTION: In the water treatment method by which water to be treated injected ozone with a pressurizing pump 3 and pressurized is introduced into a gas liquid separation tank 5 to separate gas and liquid, and the water to be treated fed out from the gas liquid separation tank 5 is caused flow in a biological activated carbon adsorption tank to filter suspension substance and feed out, an inflow of the water to be treated caused to flow in the biological activated carbon adsorption tank 7 is stopped and also pressure in the biological activated carbon adsorption tank 7 is lowered, then the gas discharged from the gas liquid separation tank 5 is diffused inside the biological activated carbon adsorption tank 7 through a diffusion pipe 27 to wash a filter medium 30.</p> |
