| 摘要 |
<p>The invention provides a compact system for diverting excess flow in wastewater conduits 1 to provide precise and stable control and to retain debris within the conduit. This is achieved by a cylindrical control-section 22 of the conduit 1 arranged to rotate about an axis 23 of the conduit, the control-section 22 having a discharge port 24 through which water may leave the conduit 1. The method comprises measuring the depth of water in the conduit 1 downstream of the discharge port 24 to determine whether the water surface level is above or below a depth-limit and adjusting the rotation of the control-section accordingly. The discharge port may include a grille 25 to retain any debris, the grille 25 being cleared of debris by rotating the control-section to move the discharge port towards a top-centre position to allow debris to fall back into the wastewater flowing in the conduit. This may be assisted by brushes or scrapers 27 and/or liquid jets 26.</p> |
