| 摘要 |
<p>An apparatus for the purification of waste water comprises a reservoir (1) including a primary circulation system (2) for the liquid therein, an influent supply (5) and effluent discharge (6) connected to the reservoir (1), propulsion device (4A,4B) for circulating the liquid in the circulation system and simultaneously aerating it. The reservoir (1) is equipped with a denitrification space (7) connecting with the remainder of the reservoir through an inlet (8) and outlet (9). The influent supply connects to the denitrification space. A secondary circulation system is formed within the denitrification space having its own propulsion device (10). <IMAGE></p> |
