| 摘要 |
<p>PURPOSE:To obtain treated water low in the content of a solid such as sludge by providing a draft pipe opened at the upper and lower ends thereof and an outer cylinder forming an annular passage around the draft pipe equipped with flanges at the upper and lower ends thereof above an air diffuser and providing the transfer pipe connected to the liquid outflow opening of the outer cylinder to allow a treated water to flow out. CONSTITUTION:In a three-phase fluidized type waste water treatment apparatus, a draft pipe 4 opened at the upper and lower ends thereof is arranged above an air diffuser 9. An outer cylinder 6 forming an annular passage 5 and equipped with flanges 7, 8 at the upper and lower ends thereof is arranged around the draft pipe 4. The downward stream of water containing almost no carrier particles is generated in the vicinity of the outer cylinder 6 and protected from disturbance by the upper and lower flanges 7, 8 and carrier particles are not almost mixed with water. The transfer pipe 11 connected to the liquid outflow opening 6B of the outer cylinder 6 to allow treated water to flow out is provided. By this apparatus, treated water low in the content of a solid such as sludge is obtained.</p> |
