| 摘要 |
PCT No. PCT/FI90/00061 Sec. 371 Date Nov. 8, 1990 Sec. 102(e) Date Nov. 8, 1990 PCT Filed Mar. 7, 1990 PCT Pub. No. WO90/10502 PCT Pub. Date Sep. 20, 1990.A dispersion water nozzle passes pressurized water containing dissolved air into a flotation clarifier. A throttle part of the nozzle is composed of a cylinder or spherical valve member, into which, the main flow through passage and a crosswise flow through passage are formed. The crosswise flow through passage has a smaller cross-sectional area. The throttle part is followed by a tubular flow equalization part. The nozzle is easy to clean by changing the flow passages and flow directions in the throttle member. |
