combined sewer overflow monitoring Articles

  • 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 ...


    By IWA Publishing

  • 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 ...


    By IWA Publishing

  • 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 ...


    By Greyline Instruments Inc.

  • 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 ...


    By IWA Publishing

  • 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 ...


    By IWA Publishing

  • Innovative Technology Provides Real Time Flow Data Management in Indianapolis

    This paper presents the program developed by the City of Indianapolis for managing its sewer flow data and describes how it is making real-time information available to several groups that have a stake in the City’s environmental management programs. These groups include United Water, the contract operator for the City’s collection system and its two WWTPs, the Capitol Improvement Program ...

  • 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. ...


    By IWA Publishing

  • HawkEye CSO Discharge Alarm System

    Hawkeye is a two-channel GSM telemetry recorder and a joint venture between Hydro-Logic and IETG of Leeds. Hydro-Logic provide the key electronic and firmware technology basing it on our successful Hawk range of outstations. It was the first fully integrated measurement and telemetry system specifically designed to monitor the performance of Combined Sewer Overflows (CSO). All electronics ...

  • Wastewater master plan - south of Missouri river

    Client: Kansas City, Mo.   Completion Date: 1999   Services Provided Collection system modeling Pumping station analysis Combined and sanitary sewer wet weather flow management Project Summary  Burns & McDonnell performed a master plan of wastewater facilities for Kansas City, ...


    By Burns & McDonnell

  • 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 ...


    By IWA Publishing

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