| 摘要 |
<p>The invention relates to a water treatment process, in particular to a continuous treatment process for sewage, and also a water treatment plant system, in particular a continuous treatment process for sewage. The sewage is treated so that an aerated mixture of sewage and activated sludge is degassed before the mixture is led into the secondary sedimentation tank. The sewage treatment system comprises a venting arrangement 1, which connects the aeration tank or a separate chamber 7 in the aeration tank to the secondary sedimentation tank 10 or chamber 8 separated therefrom. The venting arrangement 1 is formed as an inverted U-shaped pipe. One arm forms the feed collecting pipe 2 and the other forms the discharge collecting pipe 3, while the section connecting the ends at the top defines the intermediate chamber 4, which contains a separate gas extraction chamber 5. <IMAGE></p> |
