In 1987 the first vortex solids separator facility in Germany was installed for combined sewer overflow (CSO) control. The separation efficiency was optimized in the hydraulic laboratory using scaled down models with artificial tracers to simulate typical sewage particulates. The station has two parallel operating vortex separators and serves a connected and impervious area of about 11 hectares (ha) and 1,500 people. The specific storage volume of the station is 7.2 m3 per ha. Two evaluation programs were conducted. The first evaluation phase noted the operational reliability, hydraulic loads, overflow frequencies and water mass balances. The second phase monitored separation efficiencies. The evaluation showed that vortex solids separators are now ready for use in CSO control.
Experience with Vortex Separators for Combined Sewer Overflow Control
H. Brombach, C. Xanthopoulos, H. H. Hahn, W. C. Pisano; Experience with Vortex Separators for Combined Sewer Overflow Control. Water Sci Technol 1 March 1993; 27 (5-6): 93–104. doi: https://doi.org/10.2166/wst.1993.0489
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