Storm water management in an urban catchment: effects of source control and real-time management of sewer systems on receiving water quality

2002 ◽  
Vol 46 (6-7) ◽  
pp. 19-26 ◽  
Author(s):  
T. Frehmann ◽  
I. Nafo ◽  
A. Niemann ◽  
W.F. Geiger
Keyword(s):  
Water Management ◽  
Water Quality ◽  
Control Measures ◽  
Storm Water ◽  
Source Control ◽  
Sewer System ◽  
Urban Catchment ◽  
Storm Water Management ◽  
Combined Sewer ◽  
Receiving Water

For the examination of the effects of different storm water management strategies in an urban catchment area on receiving water quality, an integrated simulation of the sewer system, wastewater treatment plant and receiving water is carried out. In the sewer system real-time control measures are implemented. As examples of source control measures the reduction of wastewater and the reduction of the amount of impervious surfaces producing storm water discharges are examined. The surface runoff calculation and the simulation of the sewer system and the WWTP are based on a MATLAB®/SIMULINK® simulation environment. The impact of the measures on the receiving water is simulated using AQUASIM. It can be shown that the examined storm water management measures, especially the source control measures, can reduce the combined sewer overflow volume and the pollutant discharge load considerably. All examined measures also have positive effects on the receiving water quality. Moreover, the reduction of impervious surfaces avoids combined sewer overflow activities, and in consequence prevents pollutants from discharging into the receiving water after small rainfall events. However, the receiving water quality improvement may not be seen as important enough to avoid acute receiving water effects in general.

scholarly journals A sewer overflow mitigation during festival and rainfall periods: case study of Karbala

2020 ◽  
Vol 10 (12) ◽  
Author(s):  
Hussein Abed Obaid Alisawi
Keyword(s):  
Water Management ◽  
Water Depth ◽  
Storm Water ◽  
Management Model ◽  
Sewer Pipe ◽  
Sewer System ◽  
Storm Water Management ◽  
Storm Water Management Model ◽  
Sewer Overflow

AbstractThe objective of the present study to assess the performance of a suggested sewer line by using pipe jacking system (PJS) in order to enhance the sewage capacity and mitigate sewer flooding of historic pilgrimage city of Karbala, Iraq. The storm water management model (SWMM5) was used for this purpose. The simulation of exiting sewer system reveals that sewer discharge during peak pilgrimage period is more than 200% of the capacity of existing sewer line. Installation of SLL having a diameter of 2.5 m at a depth ranging between 12 and 22 m by PJS can reduce water depth in sewer pipe by 78%. The reduction of water depth at sewer pipe can reduce sewer overflow up to 70%, if the system is installed and managed properly. The methodology proposed in the paper can be applied in any location having similar problem with necessary modifications.

Urban Storm Water Discharges: Effects upon Plankton Communities

1990 ◽  
Vol 22 (10-11) ◽  
pp. 155-162 ◽  
Author(s):  
H. F. Gast ◽  
R. E. M. Suykerbuyk ◽  
R. M. M. Roijackers
Keyword(s):  
Storm Water ◽  
Running Waters ◽  
Sewer System ◽  
Combined Sewer ◽  
Receiving Waters ◽  
Zooplankton Communities ◽  
Plankton Communities ◽  
Urban Storm ◽  
Receiving Water

From 1985 to 1987, effects of sewer discharges on communities of phyto- and Zooplankton in receiving waters have been studied. Locations all over The Netherlands have been selected. The results were related to the type of sewer system, the discharges and the characteristics of the receiving water. Results were compared with those from samples taken from a corresponding water not influenced by sewer discharges, the reference water. Often either phyto- or Zooplankton communities could be used succesfully to describe the short-and medium-term effects of the discharges on the quality of the involved habitats. Plankton communities could also indicate permanent effects due to higher saprobic levels in the receiving water compared to the reference water: an obvious result of urban storm water discharges. In small and medium-sized stagnant waters, particularly in the immediate vicinity of the overflows, effects on plankton communities were more pronounced compared to large and running waters. Combined sewer system overflows (CSO) often proved to affect plankton communities more severely than separate sewer system discharges (SSD), except for some locations in industrial areas.

Predicted Changes in Water Quality after Elimination of Storm Runoff into the Urban Lake and Canals of Hamburg

1982 ◽  
Vol 14 (4-5) ◽  
pp. 315-322
Author(s):  
H Caspers
Keyword(s):  
Water Quality ◽  
Algal Blooms ◽  
Quality Index ◽  
Storm Water ◽  
Fish Kills ◽  
Sewer System ◽  
Noticeable Effect ◽  
Sediment Removal ◽  
Combined Sewer ◽  
Restoration Measures

Storm-water overflows from the combined sewer system into the Alster Lake in Hamburg and its canals have resulted in heavy eutrophication. Predictions were made, based on the Water Quality Index, concerning the degree of improvement to be expected from various restoration measures. Elimination of sewage input alone should not have a noticeable effect because much nutrient material is deposited on the bottom of the lake and canals. Calculations indicate that reduction of sewage overflow together with sediment removal would improve the appearance of the Alster system, eliminate the danger of fish kills, and prevent algal “blooms” in summer.

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