| 摘要 |
<p>The waste waters which may have been purified first mechanically (1) are introduced into a reactor (4), in which they undergo during their forced ascension an intensive introduction of very thin air bubbles (oxygen). The reactor contains filling bodies and material for neutralization, biological purification, filtration and/or adsorption, forming a multitude of layers. Then the water goes through a special filtering device (6, 8); repeated introduction of air (7) can be provided between the different systems. The filters comprise, on the one hand, filtering elements partly composed of porous synthetic material, and on the other hand, materials allowing the biological purification and eventually the adsorption.</p> |
