POSSIBILITIES FOR REAL TIME CONTROL OF COMBINED SEWER SYSTEMS IN THE NORTHEAST UNITED STATES

1991 ◽  
pp. 465-468
Author(s):  
D.L. Westerling
Keyword(s):  
United States ◽  
Real Time ◽  
Real Time Control ◽  
Northeast United States ◽  
Time Control ◽  
Sewer Systems ◽  
Combined Sewer

scholarly journals Real-time control of sewer systems using turbidity measurements

2011 ◽  
Vol 63 (11) ◽  
pp. 2628-2632 ◽  
Author(s):  
C. Lacour ◽  
M. Schütze
Keyword(s):  
Real Time ◽  
Measurement Techniques ◽  
Quality Characteristics ◽  
Water Quantity ◽  
Urban Drainage ◽  
Data Sets ◽  
Real Time Control ◽  
Time Control ◽  
Sewer Systems ◽  
Combined Sewer

Real-time control (RTC) of urban drainage systems has been proven useful as a means to reduce pollution by combined sewer overflow discharges. So far, RTC has been investigated mainly with a sole focus on water quantity aspects. However, as measurement techniques for pollution of wastewater are advancing, pollution-based RTC might be of increasing interest. For example, turbidity data sets from an extensive measurement programme in two Paris catchments allow a detailed investigation of the benefits of using pollution-based data for RTC. This paper exemplifies this, comparing pollution-based RTC with flow-based RTC. Results suggest that pollution-based RTC indeed has some potential, particularly when measurements of water-quality characteristics are readily available.

General assessment of potential CSO reduction by means of real time control

1995 ◽  
Vol 32 (1) ◽  
pp. 249-257 ◽  
Author(s):  
Michael Jørgensen ◽  
Wolfgang Schilling ◽  
Poul Harremoës
Keyword(s):  
Real Time ◽  
Case Studies ◽  
Control Strategies ◽  
Systematic Investigation ◽  
Optimum Control ◽  
Real Time Control ◽  
General Applicability ◽  
Time Control ◽  
Sewer Systems ◽  
Combined Sewer

A number of case studies have been carried out in which the potential reduction of combined sewer overflows (CSO) by means of real time control (RTC) is assessed for existing sewer systems. It is an inherent problem of case studies that results cannot necessarily be generalized. In this paper results of a systematic investigation of hypothetical combined sewer systems are presented. The systems were characterized in terms of their topological structure, size, type and arrangement of storage and transport elements. The RTC optimization model LOCUS was applied to simulate the performance of local control and of optimum control strategies. The results are expressed as “CSO reduction achieved by optimum control, compared to the locally controlled system”. General conclusions are drawn with respect to possible CSO reduction for a system with given topology, storage and transport characteristics. Finally, these are compared to some case studies reported in the literature in order to verify and show the general applicability of the findings.

Pollution based real time control strategies for combined sewer systems

1997 ◽  
Vol 36 (8-9) ◽  
pp. 331-336 ◽  
Author(s):  
Gabriela Weinreich ◽  
Wolfgang Schilling ◽  
Ane Birkely ◽  
Tallak Moland
Keyword(s):  
Real Time ◽  
Control Strategies ◽  
Ammonia Nitrogen ◽  
Simple Extension ◽  
Real Time Control ◽  
Time Control ◽  
Sewer Systems ◽  
Receiving Waters ◽  
Tunnel System

This paper presents results from an application of a newly developed simulation tool for pollution based real time control (PBRTC) of urban drainage systems. The Oslo interceptor tunnel is used as a case study. The paper focuses on the reduction of total phosphorus Ptot and ammonia-nitrogen NH4-N overflow loads into the receiving waters by means of optimized operation of the tunnel system. With PBRTC the total reduction of the Ptot load is 48% and of the NH4-N load 51%. Compared to the volume based RTC scenario the reductions are 11% and 15%, respectively. These further reductions could be achieved with a relatively simple extension of the operation strategy.

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