Sewer Monitoring Articles

  • Infiltration Study Poses Challenges But Could Save Millions on Treatment Plant

    Lower 48 Instruments works in partnership with consulting engineers to provide equipment and manpower for flow studies. IBI Group, out of Columbus, OH, USA, contracted with the company to provide placement expertise, equipment and data collection for a period of 60 days. Lower 48 installed 16 meters across the combined sewer district collection system to measure flow as well as rainfall-event ...


    By In-Situ, Inc.

  • City of Ottawa Tackles System Overflow and Flooding with Tempest Inlet Controls Case Study

    Over the past few decades, rain events throughout North America have become more frequent and substantial. The combination of increased rain and outdated infrastructure has caused many municipality storm sewers and drainage systems to exceed capacity, resulting in flooding and additional expense. To cost-effectively mitigate the problem, municipalities are turning to the use of inlet control ...


    By IPEX, Inc.

  • AQUASCAN 610 nails a difficult leak on a long distance - Case Study

    Lawrence Kansas finds leak on KU Campus Introduction: In June 2018, the City of Lawrence, Kansas water department pinpointed a very small but significant, non-surfacing leak using GUTERMANN’s AQUASCAN 610 Leak Noise Correlator.  Public Works and Utilities received a call that there was an unusual amount of water infiltrating a storm sewer.  After ...


    By Gutermann AG

  • New Study Links Septic Tanks to Florida Algal Blooms

    State seeks millions to help residents disconnect from septic systems and connect to sewers ...


    By Fluence Corporation

  • Vacuum sewerage systems – a solution for fast growing cities in developing countries?

    Developed more than a century ago, the potential of vacuum sewerage systems remains underexploited. At the same time, the rapid urbanization in Asia brings about major challenges for municipal utilities. In this context, the GIZ (Deutsche Gesellschaft fuer Internationale Zusammenarbeit) project ‘Integrated Resource Management in Asian Cities: the Urban Nexus’ gives technical advice to ...


    By IWA Publishing

  • Effect of Doppler flow meter position on discharge measurement in surcharged manholes

    Determining the proper installation location of flow meters is important for accurate measurement of discharge in sewer systems. In this study, flow field and flow regimes in two types of manholes under surcharged flow were investigated using a commercial computational fluid dynamics (CFD) code. The error in measuring the flow discharge using a Doppler flow meter (based on the velocity in a ...


    By IWA Publishing

  • The P374 Intrinsically Safe Pipe Inspection System

    Are you looking for a Pipeline Inspection Camera? Suitable for a range of applications including sewer line and water pipe inspections, USA Borescopes can offer you a range of Pipeline Inspection Cameras for sale or on a rental basis.   Here is some information about the P374 Intrinsically Safe borescope by Pearpoint (Pearpoint P374). USA ...


    By USA Borescopes

  • Picking the right Sewer Camera

    Sewer camera models are pretty straightforward, in most cases. But, there are many options if you want a sewer camera or commonly called snake camera. This type comes many varieties: Pipe Inspection camera with viewing capabilities only, sewer ...


    By USA Borescopes

  • Urban stormwater inundation simulation based on SWMM and diffusive overland-flow model

    With rapid urbanization, inundation-induced property losses have become more and more severe. Urban inundation modeling is an effective way to reduce these losses. This paper introduces a simplified urban stormwater inundation simulation model based on the United States Environmental Protection Agency Storm Water Management Model (SWMM) and a geographic information system (GIS)-based diffusive ...


    By IWA Publishing

  • PeCOD® Case Study: 15 Sewer Use By-Law Monitoring: Batch Release Tracing City of Austin, Texas

    Municipal wastewater treatment plants are designed to process a calculated range of organic loading in the raw influent. The calculation of this loading is based on characteristics of the plant’s region, such as population and industry type. Organic loading is most often quantified by the concentration of parameters such as Total Suspended Solids (TSS), Biochemical Oxygen Demand (BOD), ...


    By MANTECH Inc.

  • Assessment on inflow and infiltration in sewerage systems of Kuantan, Pahang

    Inflow and infiltration are important aspects of sewerage systems that need to be considered during the design stage and constantly monitored once the sewerage system is in operation. The aim of this research is to analyse the relationship of rainfall as well as inflow infiltration with sewage flow patterns through data collected from fieldwork. Three sewer pipelines were selected at the ...


    By IWA Publishing

  • Experimental study of pollutant washoff on a full-scale street section physical model

    This study analyses the mobilization of total suspended solids (TSS) for different spatial distributions of sediment load located over the roadway surface of a full-scale street section physical model. At the sewer network outlet, flow discharges were measured and TSS pollutographs were determined with manual grab samples and inferred from turbidity records. In all the tests, the rain duration ...


    By IWA Publishing

  • Link-Pipe Inc.’s Grouting Sleeve - Case Study

    Background Link-Pipe Grouting Sleeve is manufactured by Link-Pipe inc. of Canada. It is a local repair system developed for the structural renovation of gravity sewers. The system is comprised of a stainless steel structural core, which uses a mechanical lock to hold it against the host pipe, the core is surrounded by an absorbent foam gasket. Limit straps prevent the sleeve ...


    By Link-Pipe Inc.

  • Measuring Wastewater Below Ground

    Measuring wastewater is one of the most difficult water management tasks that exists. While some wastewater flows are easy to access, others are very hard to measure because they are in open channel conditions and are below grade. If you need to measure below ground wastewater flow, there are a few factors that you need to consider to help you choose the right tool for the job. With a ...


    By TRACOM Inc.

  • Adapted optimization model for planning regional wastewater systems: case study

    Wastewater systems are of crucial importance to the promotion of sustainable development. Through an integrated planning approach, the costs can be minimized and the resulting benefits maximized. A planning approach at regional level exploits the economies of scale, while achieving a better environmental performance. In this paper we set out a decision support approach for the planning of ...


    By IWA Publishing

  • Numerical modelling of air-water flows in sewer drops

    The presence of dissolved oxygen (DO) in water flows is an important factor to ensure the aerobic conditions recognised as beneficial to preventing the occurrence of detrimental effects. The incorporation of DO in wastewater flowing in sewer systems is a process widely investigated in order to quantify the effect of continuous reaeration through the air-liquid interface or air entrained due to ...


    By IWA Publishing

  • Good Preparation and Planning Reduces Wastewater Headaches Associated with Production Outages

    Author’s note: The terms mill and plant are used interchangeably in this article to describe an industrial manufacturing unit, such as a Pulp & Paper Mill, Petroleum Refinery, Chemical Processing Plant, Meat & Poultry Processing, etc. Plant (or mill) outages come in two types – scheduled and unplanned. Scheduled outages are generally annual affairs at roughly the same ...

  • A novel freeze protection strategy for shallow buried sewer pipes: temperature modelling and field investigation

    The burial of sewer and water pipes below the maximum ground frost depth can be very costly and laborious in regions with cold winters. If a freeze protection measure is applied, the utility lines can be installed in a shallower trench to reduce the excavation needs. One freeze protection measure, so called heat tracing, consists of supplying heat along the pipes. In this work, the use of 4th ...


    By IWA Publishing

  • Monitoring accumulation sediment characteristics in full scale sewer physical model with urban wastewater

    A series of experiments were carried out with real wastewater in a pilot flume located at A Coruña wastewater treatment plant (WWTP) (Spain). A full scale model was developed to test a circular (300 mm inner diameter) and an equivalent area egg-shaped plastic pipe under controlled experimental conditions (pipe slope 2–5‰, averaged discharge Q = 4 L/s). Velocity profiles and sediment ...


    By IWA Publishing

  • Improving the microbiological quality of the Ruhr River near Essen: comparing costs and effects for the reduction of Escherichia coli and intestinal enterococci

    After rain events in densely populated areas, combined sewer overflows (CSOs) can have severe health-related effects upon surface water quality, as well as diffuse overland runoff and wastewater treatment plants (WWTPs). All of these sources emit pathogens and fecal indicator bacteria into the surface water, which the EU Bathing Water Directive addresses by giving threshold values for the ...


    By IWA Publishing

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