sewer overflow monitoring Articles
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Evaluation of effectiveness of combined sewer overflow control measures by operational data
The effect of combined sewer overflow (CSO) control measures should be validated during operation based on monitoring of CSO activity and subsequent comparison with (legal) requirements. However, most CSO monitoring programs have been started only recently and therefore no long-term data is available for reliable efficiency control. A method is proposed that focuses on rainfall data for ...
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CSO management from an operator's perspective: a step-wise action plan
Combined sewer overflows (CSO) are the “ugly ducklings” of urban wastewater infrastructure, rather unknown, rarely loved. Contrary to wastewater treatment plants (WWTP) where, commonly, process parameters are carefully registered, still relatively little is known about the spill behaviour of CSOs. In spite of the considerable bandwidth of pollution magnitude reported in literature, it can be ...
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Model evaluation of faecal contamination in coastal areas affected by urban rivers receiving combined sewer overflows
Odaiba seaside park is one of the most popular waterfronts in Tokyo Bay, but is easily affected by wet weather pollutant loads through combined sewer overflows (CSOs). The monitoring data of Escherichia coli clearly showed high faecal contamination after a rainfall event on 9–11 November 2007. We estimated the amounts of discharge volume and E. coli pollutant loads of urban rivers ...
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Wastewater Level Measurement Techniques
Level monitoring and control is a fundamental requirement in any wastewater treatment process. You will find level instrumentation installed at even the simplest treatment plants for pump control, chemical storage tanks and process level controls or alarms. Operators have only limited or emergency control over treatment plant influent, so level controls and instrumentation play an important role ...
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Flow measurements in sewers based on image analysis: automatic flow velocity algorithm
Discharges of combined sewer overflows (CSOs) and stormwater are recognized as an important source of environmental contamination. However, the harsh sewer environment and particular hydraulic conditions during rain events reduce the reliability of traditional flow measurement probes. An in situ system for sewer water flow monitoring based on video images was evaluated. Algorithms to determine ...
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The use of CFD modelling to optimise measurement of overflow rates in a downstream-controlled dual-overflow structure
The measurement of the flow through complex combined sewer overflow structures in the frame of automated monitoring remains difficult. In this paper, a methodology based on the use of computational fluid dynamics (CFD) modelling in order to improve the instrumentation of a downstream-controlled dual-overflow structure is presented. The dual-overflow structure is composed of two combined sewer ...
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Smart Septicity Monitoring for Sewer Networks
Wastewater process control is increasingly complex as regulations become more stringent. The monitoring of wastewater quality plays a crucial part in identifying existing or emerging problems within sewer networks and new technological advances are transforming the future of wastewater management, offering the ultimate smart sewer septicity solution for sewer networks. Managing and controlling ...
By Coftec
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Innovative monitoring of combined sewer overflow (CSO) quality in the Liguori catchnment (Cosenza, Italy)
Estimates of urban wet-weather flow pollutant loads are required to assess their impact on receiving waters and optimize wastewater treatment plant (WWTP) and combined sewer overflow (CSO) operations. In particular, a quantitative characterization of flow quality by means of fairly accurate monitoring is required for developing a rational planning approach and preferential treatment strategies. ...
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