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SEWER SEDIMENT GATE AND VACUUM FLUSHING TANKS: LABORATORY FLUME STUDIES
Citation:
Fan*, C Y., R Field*, Q. Guo, AND R. Raghavan. SEWER SEDIMENT GATE AND VACUUM FLUSHING TANKS: LABORATORY FLUME STUDIES. Third International Symposium on Environmental Hydraulics: A Special Theme in urban Fluid Dynamics, Tempe, AZ, 12/5-8/2001.
Description:
The objective of this study was to test the performance of a traditional gate-flushing device and a newly designed vacuum-flushing device in removing sediments from combined sewers and CSO storage tanks. A laboratory hydraulic flune was used to simulate a reach of sewer or storage tank. The flushing device was fabricated and installed at the head-end of the flume. The removed sediments were collected at the end of the flume and weighed. The test results indicate that the vacuum-flushing device is slightly more efficient than the gate-flushing device; the weight of flushed sediments increases with the initial water volume in the flushing device; the weight of flushed sediments decreases with the initial water depth in the flume; the weight of flushed sediments only changes slightly with the size of flushing device opening for water release and does not necessarily increase with the size.