sewer blockage Articles

  • Rapid detection of sewer defects and blockages using acoustic-based instrumentation

    Sewer flooding incidents in the UK are being increasingly associated with the presence of blockages. Blockages are difficult to deal with as although there are locations where they are more likely to occur, they do occur intermittently. In order to manage sewer blockage pro-actively sewer managers need to be able to identify the location of blockages promptly. Traditional closed-circuit ...


    By IWA Publishing

  • Research of the performance of pulse electrohydrodynamics in blockage removal

    In line with contemporary trends and seeking to develop new methods and technologies, a new, original technology was explored and designed based on a non-conventional process of electrical pulse discharge in a water chamber, referred to as ‘Pulse Electrohydrodynamic Technology’ (PELHYDT). The application of the PELHYDT in sewer blockage removal is presented in this paper. Existing machinery can ...


    By IWA Publishing

  • On the preventive management of sediment-related sewer blockages: a combined maintenance and routing optimization approach

    In this work we tackle the problem of planning and scheduling preventive maintenance (PM) of sediment-related sewer blockages in a set of geographically distributed sites that are subject to non-deterministic failures. To solve the problem, we extend a combined maintenance and routing (CMR) optimization approach which is a procedure based on two components: (a) first a maintenance model is ...


    By IWA Publishing

  • Case Study - Sewer Sensors

    Sewer Sensors Sewer sensors are offered by Solid Applied Technologies for remote level monitoring. The sesnors are ultrasonic, non-contact with no moving parts. The system is equipped with an external battery pack and can operate at a low-power-mode for long term life. The sensors are equipped with embedded GSM cellular modem and act as M2M terminals, transmitting data ...

  • Municipal sewer remote monitoring

    Sewers are critical heavy duty infrastructure components requiring costly maintenance. Many municipalities suffer from ageing pipelines that pose higher chances of failure. Sewer leak or overflow results in high cost as a result of civil reimbursement and due to inflected illness. Moreover Civilian frustration that results form the overflow is often targeted towards the municipality. Overflow can ...

  • Using InfoNet to manage a planned sewer maintenance program

    OnSite is a framework contractor for Severn Trent Water, one of the ten water service companies of England and Wales. The company is one of the project coordinators for the utility’s planned sewer maintenance programme and one of three framework contractors working in very close collaboration on its CCTV survey and sewer cleansing program. In addition the company undertakes man-entry surveys, ...


    By Innovyze

  • Impact of water source management practices in residential areas on sewer networks – a review

    Prolonged drought which has occurred everywhere around the world has caused water shortages, leading many countries to consider more sustainable practices, which are called source management practices (SMPs) to ensure water availability for the future. SMPs include the practices of water use reduction, potable water substitution and wastewater volume reduction such as water demand management, ...


    By IWA Publishing

  • Prioritising sewerage maintenance using inferred sewer age: a case study for Edinburgh

    The reported research project focuses on using a database which contains details of customer contacts and CCTV data for a key Scottish catchment to construct a GIS based sewer condition model. Given the nature of the asset registry, a key research challenge was estimating the age of individual lengths of pipe. Within this context, asset age was inferred using the estimated age of surface ...


    By IWA Publishing

  • Trouble Shooting for Trenchless Liner Installation During Sewer Line Rehabilitation

    ABSTRACTLining is being used by the utility industry as a cost effective solution to rehabilitate utility lines. Many types of liners, such as, cured-in-place-pipe (CIPP), fold and form PVC, deformed & reformed HDPE, etc., are being used to restore structural integrity of deteriorated pipes and to reduce inflow/infiltration. Most of the lining installation is carried out without any problem, ...

  • Combined Sanitary Sewer Overflows (SSO) - Performance Focus: Fats, Oil and Grease (FOG) Reductio Case Study

    In-PIpe Technology Company, Inc., drastically accelerates the natural degradation of fats, oil and grease (FOG) in the collection system, thereby removing blockages and occlusions from the pipe and significantly reducing the occurrence of FOG-related sewer overflows, as well as the requisite equipment and manpower required for the physical removal of these blockages. Since In-Pipe started ...

  • The efficiency of asset management strategies to reduce urban flood risk

    In this study, three asset management strategies were compared with respect to their efficiency to reduce flood risk. Data from call centres at two municipalities were used to quantify urban flood risks associated with three causes of urban flooding: gully pot blockage, sewer pipe blockage and sewer overloading. The efficiency of three flood reduction strategies was assessed based on their effect ...


    By IWA Publishing

  • Goodness, gracious – great balls of fat

    They're lurking in the sewers, rolling onwards, growing larger... Fat is a menace to pumping stations. Often forming balls reaching the size of footballs, they can mass in their hundreds, clogging up vital equipment as they float to the surface. The result? Blockages, toxic gases and, ultimately, expensive breakdowns. But they've met their match with a revolutionary new bio-technology - The ...


    By Cleveland Biotech Ltd.

  • Grease Processing for Renewable Energy, Profit, Sustainability, and Environmental Enhancement

    Various organizations are pursuing and implementing uses for grease waste materials. This is driven largely by rising prices for fuels and electric power, but also from the need to minimize the problems of sewer blockages, sewer overflows, and odor problems caused by such grease when discharged to local sewers. Using grease-source fuels to replace conventional fuels can also reduce greenhouse gas ...

  • Management of Fats Oil and Grease - FOG

    Estimates reveal that FOG reaching the nations drains causes up to 75% of sewer blockages and related floods.  The management of this waste stream is being taken increasingly seriously by the authorities, including Environmental Health Officers, The Environment Agency and the Water Companies.   Not everyone is aware of their responsibilities with ...


    By Cleveland Biotech Ltd.

  • How Much Could You Save by Avoiding a Consent Decree?

    In 2012, St. Louis, MO (Metropolitan St. Louis Sewer District) set a record for the most expensive sewer consent decree in history at $4.7 BILLION to be spent over the next 23 years. The cause of this consent decree and the cause of most consent decrees are overflow events that allow untreated waste into the nearby lakes, streams, river, or other nature areas. There are typically two types of ...


    By EnTech Engineering, Inc

  • Identifying and Strengthening “Weak Links” in the Fog Management Chain

    ABSTRACTRecently, EPA presented statistics that cited grease accumulation in sewers as the leading cause of sewer blockages resulting in sanitary sewer overflows (SSOs). Such blockages can be attributed to fats, oils, and grease (FOG) discharged from food preparation and manufacturing facilities, concentrated residential areas, and even single family homes. Municipalities and wastewater system ...

  • Collection system treatment with Bio-Organic Catalyst case study

    A Comprehensive Technology Model The use of a Bio-Organic Catalyst (BOC) offers a new green chemistry tool to solving the chronic and systemic challenges of nearly all collection systems, including: Slime Layers Noxious Odors Grease Blockages Dissolved Oxygen Levels in Sewage Wastewater Corrosion of Infrastructure ...


    By EcoJump LLC

  • Solid at offers remote WEB/GMS/GPRS monitoring solution case study

    Solid’s SmartScan® 50 provides noncontact, maintenance free ultrasonic solution with remote monitoring for problem prevention and effective sewer management in one of Israel's wastewater plants. The Problems Holon municipality sewage system, located in the center of Israel, is an old underground network. The wastewater collection system consists of buried pipelines which ...

  • Sensitivity analysis on the pollutant trapping efficiencies of a novel sewerage overflow screening device

    A novel ‘Comb Separator’ was developed and tested with the aim of improving sewer solids capture efficiency and reducing blockages on the screen. Experimental results were compared against the industry standard ‘Hydro-Jet™’ screen. Analysing the parameter sensitivity of a hydraulic screen is a standard practice to get better understanding of the device performance. In order to understand the ...


    By IWA Publishing

  • Case Study - The performance of the grease degrading bioproduct greasolux in the meat manufacturing factory and municipal WWTP

    Problem A municipal waste water treatment plant in one Baltic town continuously had problems with the fat, oil and grease (FOG) accumulation in the sewer lines, lift stations and waste water treatment plant, since the start up of a local meat processing facility. The highly polluted waste water directly impacted the treatment plant in the following ways: Increased grease ...


    By Ecochemicals UAB

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