scholarly journals The Potential Benefits Of Real-Time Monitoring Of Combined Sewer Overflows In The City Of Toronto

2021 ◽  
Author(s):  
Romak Kordnejad
Keyword(s):  
Real Time ◽  
Weather Conditions ◽  
Future Research ◽  
Environmental Damage ◽  
Real Time Monitoring ◽  
Combined Sewer Overflows ◽  
Combined Sewer ◽  
Potential Benefits ◽  
Sewer Overflows ◽  
The City

This thesis focuses on the current state of combined sewer overflows (CSO) in the City of Toronto and the potential benefits of utilizing real-time monitoring system to explore options for optimizing current models and reducing future overflows. CSOs containing sanitary and stormwater sewage over spill during wet weather conditions, contaminating bodies of water. Antiquated sewer systems built to support population at the time, no longer have the required capacity to support exponential growth causing environmental damage. Key research findings include exploring the current CSO state in the City of Toronto, remediation plans executed by the City in hopes to reduce CSO and finally concluding the City’s progress to date. Extensive research on CSOs in North American cities has shown initiative towards reducing CSOs while using real-time monitoring systems which can be utilized in the City of Toronto. Future research is required to find effective and efficient ways of implementing such systems.

scholarly journals The Potential Benefits Of Real-Time Monitoring Of Combined Sewer Overflows In The City Of Toronto

2021 ◽  
Author(s):  
Romak Kordnejad
Keyword(s):  
Real Time ◽  
Weather Conditions ◽  
Future Research ◽  
Environmental Damage ◽  
Real Time Monitoring ◽  
Combined Sewer Overflows ◽  
Combined Sewer ◽  
Potential Benefits ◽  
Sewer Overflows ◽  
The City

This thesis focuses on the current state of combined sewer overflows (CSO) in the City of Toronto and the potential benefits of utilizing real-time monitoring system to explore options for optimizing current models and reducing future overflows. CSOs containing sanitary and stormwater sewage over spill during wet weather conditions, contaminating bodies of water. Antiquated sewer systems built to support population at the time, no longer have the required capacity to support exponential growth causing environmental damage. Key research findings include exploring the current CSO state in the City of Toronto, remediation plans executed by the City in hopes to reduce CSO and finally concluding the City’s progress to date. Extensive research on CSOs in North American cities has shown initiative towards reducing CSOs while using real-time monitoring systems which can be utilized in the City of Toronto. Future research is required to find effective and efficient ways of implementing such systems.

scholarly journals Real Time Control of Combined Sewer Overflows: the SWIFT Model

1999 ◽  
Author(s):  
Alain Mailhot ◽  
◽  
Andree Bilodeau ◽  
Claude Blanchette ◽  
Christiane Marcoux ◽  
...  
Keyword(s):  
Real Time ◽  
Real Time Control ◽  
Combined Sewer Overflows ◽  
Time Control ◽  
Combined Sewer ◽  
Sewer Overflows

Mathematical modeling of sewers under surcharge for real time control of combined sewer overflows

Urban Water ◽  
2001 ◽  
Vol 3 (4) ◽  
pp. 241-252 ◽  
Author(s):  
Sophie Duchesne ◽  
Alain Mailhot ◽  
Emeric Dequidt ◽  
Jean-Pierre Villeneuve
Keyword(s):  
Mathematical Modeling ◽  
Real Time ◽  
Real Time Control ◽  
Combined Sewer Overflows ◽  
Time Control ◽  
Combined Sewer ◽  
Sewer Overflows

Emission-immission based design of combined sewer overflows and treatment plant - the dresden case study

1997 ◽  
Vol 36 (8-9) ◽  
pp. 355-359
Author(s):  
L. Fuchs ◽  
D. Gerighausen ◽  
S. Schneider
Keyword(s):  
Treatment Plant ◽  
Combined Sewer Overflows ◽  
Quality Model ◽  
Combined Sewer ◽  
Receiving Waters ◽  
Sewer Overflows ◽  
Set Up ◽  
The City

For the city of Dresden a general master plan was set up based on investigations of the hydraulic capacity of the sewer system, the loads from combined sewer overflow and the treatment plant. The total emission from combined sewer overflows and treatment plant was the main criteria for the analysis of the efficiency of different renovation alternatives. The effect of the different alternatives on the quality of the receiving waters was investigated with a water quality model and evaluated with different approaches.

Failure of sewage pumps: statistical modelling and impact assessment

2006 ◽  
Vol 54 (6-7) ◽  
pp. 119-126
Author(s):  
H. Korving ◽  
M. Geise ◽  
F. Clemens
Keyword(s):  
Statistical Modelling ◽  
Interarrival Time ◽  
Environmental Damage ◽  
Combined Sewer Overflows ◽  
Pump Failure ◽  
Failure Data ◽  
Sewer Systems ◽  
Pumping Stations ◽  
Combined Sewer ◽  
Sewer Overflows

Sewage pumping stations are directly responsible for affecting performance, i.e. failing pumps may result in combined sewer overflows or flooding. However, failures of sewage pumps are not yet incorporated in sewer assessments due to lack of knowledge and data. This paper presents the analysis of pump failure data provided by two sewer management authorities in The Netherlands. Pump failures have been studied accounting for the nature of the failures, the operation and maintenance procedures of the management authority, the ageing of the pumps and the changes in the environment of pumps. The analysis shows that sewage pumps fail relatively often due to the composition of sewage and the discontinuous operation of the pumps. The interarrival time and the duration of failures are highly variable and independent of the pump type and the specific function of the pump. The results also indicate that the serviceability of sewer systems is significantly affected by failing pumps. As a consequence, part of the environmental damage due to CSOs (combined sewer overflows) can be avoided by improving maintenance of pumping stations.

Real-Time Control of Combined Sewer Overflows in Hamilton-Wentworth Region

1997 ◽  
Vol 32 (1) ◽  
pp. 155-168 ◽  
Author(s):  
M. Stirrup ◽  
Z. Vitasovic ◽  
E. Strand
Keyword(s):  
Control System ◽  
Real Time ◽  
Treatment Plant ◽  
Simulation Models ◽  
Real Time Control ◽  
Combined Sewer Overflows ◽  
Hydraulic Simulation ◽  
Time Control ◽  
Combined Sewer ◽  
Sewer Overflows

Abstract The Regional Municipality of Hamilton-Wentworth operates and maintains a large combined sewer system in the Great Lakes basin. During dry weather and small storm events, two large interceptor sewers convey all sanitary and storm flows to the Woodward Avenue wastewater treatment plant. Larger rainfall events, specifically high intensity summer thunderstorms, generate flows which exceed the design capacity of the sanitary interceptors and result in combined sewer overflows to Hamilton Harbour and Cootes Paradise, which ultimately discharge to Lake Ontario. The Region is implementing a comprehensive program for reducing the pollution caused by these overflows. This program includes the construction of several off-line detention storage facilities and the implementation of a real-time control system for combined sewer overflow reduction. Real-time control will enable maximum utilization of the storage available within the combined sewer network and help reduce the frequency and volume of combined sewer overflows. New hydrologic and hydraulic simulation models have been specially developed for this project to help identify, test and implement optimal real-time control strategies. This paper discusses some of the more important aspects related to the design and implementation of the Region’s real-time control system, and focuses mainly on the development of these hydrologic and hydraulic simulation models.

Combined sewer overflows: a source of cryptosporidium and giardia?

1998 ◽  
Vol 38 (12) ◽  
pp. 67-72 ◽  
Author(s):  
C. J. Gibson ◽  
K. L. Stadterman ◽  
S. States ◽  
J. Sykora
Keyword(s):  
Weather Conditions ◽  
Urban Stream ◽  
Combined Sewer Overflows ◽  
Full Effect ◽  
Human Health Impacts ◽  
Cryptosporidium Oocysts ◽  
Combined Sewer ◽  
Preliminary Study ◽  
Sewer Overflows ◽  
Recreational Use

Throughout the past several years there has been an increasing concern to reduce the pollutants within urban stormwater discharges, particularly combined sewer overflows (CSOs). The majority of the research on CSOs has focused on physical, chemical, and some biological components. This preliminary study investigated the occurrence of two pathogenic protozoa, Cryptosporidium and Giardia, in an urban stream during dry weather compared to their occurrence in a combined sewer overflow (CSO) end-of-pipe discharge to determine the loading potential and the potential human health impacts. Cryptosporidium oocysts and Giardia cysts were commonly observed in the urban stream during dry weather conditions, with concentrations of 5-105 oocysts/100L and 13-6,579 cysts/100L respectively. The CSO end-of-pipe samples during wet weather conditions discharged Cryptosporidium and Giardia at high levels, 250-40,000 oocysts/100L and 9,000-283,000 cysts/100L respectively. This preliminary study suggests that CSOs may significantly contribute to the load of Cryptosporidium and Giardia in ambient waters and source waters utilized for recreational use and potable water. However, further investigation will be needed to determine and characterize the full effect of this apparent loading source.

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