| 摘要 |
A double cylindrical reactor is provided to improve the working efficiency and reduce the installation space, by performing treatment by ozone and separation of reactants by floating and precipitating in one reactor bath. A funnel-shaped lower portion of an open-top type floating separation bath(21) is joined to a lower end of a cylindrical main body(21A). An ozone treatment bath(22) rises perpendicularly to a cylindrical bottom plate of the main body. The ozone treatment bath includes a reactor portion(22A), a shift part(22B) of which a diameter is gradually increased, and a cylindrical laminar flow part(22C) having a plurality of inclination plates(22C1) in an inside diameter portion thereof. An ozone injection tube(23) and a raw water injection tube(24) are extended to a central portion of the reactor portion while passing through the main body and the reactor portion. A sludge removing unit(25) is joined to an upper end of the floating separation bath. An ozone gas collecting bath(26) is joined to an upper end of the floating separation bath.
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