| 摘要 |
<p>PURPOSE:To efficiently carry out the purification of water and settling and separation of activated sludge, by inclining and juxtaposing plural bubble guiding board in purification vessel so as to form the gap of the above board in layer and adjoining the lower end part of the guide board to the air dispersion opening. CONSTITUTION:Air supplied from the air dispersion tube 3, is caught at the lower side of the bubble guide board 2 immediately after raising up in the purification vessel 1 filled up with contaminated water, and is raised along the wall face of the board 2 slowly. The water passages at the time of contaminated water treatment in the stratal gap a between the guiding plate 2, are formed by each of a gas phase domain 8 of oxygen, a multiplication domain 9 of the activated sluge and a sedimentation domain 9 of the activated sludge and a sedimentation domain 10 of the activated sludge in the order of the downward movement of the bubbles 7. The dissolution and diffusion domain 11 of oxygen is composed of both domains 8 and 9. Because of the thickness of the above each domain is varied by the gap a and the inclination angle theta of the guiding plate, these factors is to be selected suitably.</p> |
