| 摘要 |
An apparatus for treating waste water including a tank having at least one waste water inlet for passing waste water into an inlet region of the tank, at least one waste water outlet for draining waste water from an outlet region of the tank, at least one first baffle between said inlet region and a settlement region of the tank, wherein contaminants having a specific gravity less than one are able to settle out from the waste water for subsequent removal, at least one second baffle between the settlement region and the outlet region of the tank. A recirculation system is adapted to recirculate waste water from the outlet region to the inlet region of the tank. The recirculation system includes a water inlet arranged in the outlet region of the tank, at least one water outlet arranged in the inlet region of the tank, and a pump for pumping water from said water inlet to the water outlet. At least one water outlet of the recirculation system is arranged adjacent the surface of the waste water in the tank in use to deliver water in a stream parallel to the water surface. |
