| 摘要 |
An interceptor unit for preventing oily matter from reaching the mains drainage system comprises a separator chamber (6) and a storage chamber (18). Incoming rainwater and oily matter enter the separator chamber (6) through a tangential inlet (8), and circulate to provide a separating effect. The oily matter floats to the top and passes through a transfer duct (10) to the storage chamber (18). A dip pipe (30) extends from the bottom of the storage chamber (18), where the water is relatively uncontaminated, to an outlet box (26), so that only clean water reaches the outlet (28). Under heavy flow, relatively clean water from the lower region of the separator chamber (6) can reach the outlet box (26) by flowing through a waterway (22). In the event of a major oil or fuel spillage, the oil or fuel at the top of the separator chamber (6) can flow to the storage chamber (18) through an overflow opening (34). |
