| 摘要 |
<p>Wastewater treatment apparatus comprising at least one pre-tank (10) and a reactor tank (40) between which a transfer connection (28, 30, 38) is provided to enable wastewater to be transferred from the or each pre-tank (10) to the reactor tank (40). The reactor tank (40) is provided with a biomass (43) and aeration equipment (45) to enable the wastewater to be treated in the reactor tank (40). The capacity of the pre-tank (10) or pre-tanks (10 and 12) enables it or them to retain the storm flow for a sufficient period of time. The or one of the pre-tanks (10) is provided with a storm overflow (64), whereby even in storm conditions the reactor tank (40) remains effective and settled solids from the storm flow in the pre-tank (10) or one of the pre-tanks (10) are transferred at intervals to the reactor tank (40). In the event of persistence of the storm conditions, excess wastewater is released via the storm overflow (64) without interrupting operation of the reactor tank (40).</p> |
