Experience with Vortex Separators for Combined Sewer Overflow Control

1993 ◽  
Vol 27 (5-6) ◽  
pp. 93-104 ◽  
Author(s):  
H. Brombach ◽  
C. Xanthopoulos ◽  
H. H. Hahn ◽  
W. C. Pisano
Keyword(s):  
Separation Efficiency ◽  
Operational Reliability ◽  
Second Phase ◽  
Combined Sewer Overflow ◽  
Specific Storage ◽  
Impervious Area ◽  
Evaluation Phase ◽  
Combined Sewer ◽  
Sewer Overflow ◽  
Overflow Control

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.

Operational Experience with Vortex Solids Separators for Combined Sewer Overflow (CSO) Control

1994 ◽  
Vol 29 (1-2) ◽  
pp. 383-391 ◽  
Author(s):  
William C. Pisano ◽  
Hans Brombach
Keyword(s):  
Separation Efficiency ◽  
Operational Reliability ◽  
Pollutant Removal ◽  
Second Phase ◽  
Operational Experience ◽  
Specific Storage ◽  
Line Pipe ◽  
Impervious Area ◽  
Solids Separation ◽  
Artificial Tracers

The first vortex solids separator facility in Germany for CSO control was installed in 1987. Solids separation efficiency was optimized in the hydraulic laboratory using scaled down models and artificial tracers to simulate typical sewage particulates. The facility comprises two parallel operating vortex separators servicing an impervious area of 11 ha with a population of 1,500 people. The specific storage of the facility including the separator volume and in-line pipe storage is 7.2 m3/ha, about 1/4 - 1/2 of that required per German standards. A multi-year evaluation program was conducted. The first phase noted operational reliability, hydraulic loads and overflow frequencies. In the second phase pollutant removal efficiencies were monitored. The results were favourable indicating that the separator is now ready for use.

Implementing green infrastructure for stormwater management and combined sewer overflow control

2021 ◽  
Vol 1 (1) ◽  
pp. 1
Author(s):  
Layane Christine Vieira ◽  
Betina Frigotto De Lima ◽  
Jo�ão Vitor Erlacher De Figueiredo ◽  
Sara Coimbra Da Silva ◽  
Manuella Fagundes Bet ◽  
...  
Keyword(s):  
Green Infrastructure ◽  
Stormwater Management ◽  
Combined Sewer Overflow ◽  
Combined Sewer ◽  
Sewer Overflow ◽  
Overflow Control

DESIGN OF STORMWATER INFILTRATION FOR REDUCTION OF COMBINED SEWER OVERFLOW (CSO)

1994 ◽  
Vol 30 (1) ◽  
pp. 53-61 ◽  
Author(s):  
C. O. Rosted Petersen ◽  
P. Jacobsen ◽  
P. S. Mikkelsen
Keyword(s):  
Optimal Solution ◽  
Combined Sewer Overflow ◽  
Return Periods ◽  
Sewer System ◽  
Impervious Area ◽  
Combined Sewer ◽  
Sewer Overflow ◽  
Applied Design ◽  
Design Return Periods ◽  
Stormwater Infiltration

Stormwater infiltration is a significant tool for combined sewer overflow abatement because it involves a decrease in the impervious area connected to the sewer system. When allowing the infiltration structures to overflow into the existing sewer it is shown that for a required reduction in CSO-volume there exists an unambiguous relation between the infiltration structure volume and the size of impervious area connected to infiltration. Further, the presence of an optimal solution minimizing the total trench volume is pointed out. For a Danish sewer system with a travel time of 30 min and an interceptor capacity of 0.2 μm/s the optimal solution for reducing the CSO-volumes by 40 percent involves connecting 65 percent of the impervious area to infiltration trenches with a total storage volume of 3.6 mm. This corresponds to designing the trenches according to an exceedence return period of 0.04 yrs compared to the commonly applied design return periods of 2 to 10 yrs.

Worth of short-term rainfall forecasting for combined sewer overflow control

1981 ◽  
Vol 17 (5) ◽  
pp. 1489-1497 ◽  
Author(s):  
John W. Labadie ◽  
Rogelio C. Lazaro ◽  
Dennis M. Morrow
Keyword(s):  
Combined Sewer Overflow ◽  
Rainfall Forecasting ◽  
Short Term ◽  
Combined Sewer ◽  
Sewer Overflow ◽  
Overflow Control
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