sewer bypass Articles

  • Infrastructure Bypass: Rehabilitating the Nation’s Decaying Sewer Systems

    Billions of dollars in federal aid money has been allocated to rehabilitating our decaying sewer systems, and while these are projects that will be done, there will be associated problems with trying to keep roads and businesses open during this work. Typically, in rehabilitating existing sewer lines, the flow of sewage cannot simply be diverted—it must be “bypassed,” which ...


    By Griffin Dewatering

  • How Sewer Bypass Projects Have Changed During the 21st Century

    Over the past 20 years or so, sewer lift stations across Southern California have been working tirelessly to keep up with the ever-increasing demand as more and more housing is being built. Today, the older and smaller neighborhood pump stations that ...


    By Griffin Dewatering

  • Belfast city sewer case study

    Client: NIWater CSG provided a number of valves to go in to the newly refurbished Belfast City Sewer. Originally installed during Victorian times the sewer system has been updated in order to reduce flood risks and improve the general infrastructure. The project comes at a cost of £120M and encompasses over 10km of pipeline. It has won a number of awards for innovation and is the ...

  • Bypass Pumping System - How to choose the right pumping system to securely meet your objectives in a cost effective manner

    Many bypasses are similar in appearance and name, but it’s their subtle differences that require close attention to fully understand component performance parameters. To determine the right pump, we first need to understand many different aspects of the physical conditions of the application – Flow, Lift/Pump Strength, and Distance. FLOW – is the quantity of liquid being ...


    By Aquatech Dewatering Company

  • Sewer Line Upsize in Perris, CA - Case Study

    Innovative pipebursting approach successfully upsizes old trunk sewer line to serve a new Southern California subdivision Challenge Burst a 350-foot-long trunk line, replacing 10-inch clay pipe with 14-inch SDR-17 polyethylene pipe. Solution We helped Young Homes close escrow on the 95 homes in its Perris, CA ...


    By TRIC Tools Inc.

  • Pumps Redirects Sewer Line Emergency Situation in Albuquerque, New Mexico

    Griffin was called by TLC Plumbing in April while working on a project in Albuquerque, N.M., to look at a site where a 54-in. sewer line had collapsed. The collapse had resulted in a major intersection in Albuquerque to be closed and sewage to overflow. TLC had worked to contain the situation, but in order to make the repairs realized, bypass pumping would be required. The sewer line that had ...


    By Griffin Dewatering

  • Another Sewer from Hell - The City of Richmond, British Columbia, Canada Experience

    ABSTRACTThe City of Richmond has a population of approximately 180,000 and is located on a flood plain at approximately sea level. These physical attributes present numerous challenges with underground utility design, including sanitary sewers. On January 21, 2005 the City declared a local state of emergency near the intersection of No. 3 Road at Cook Road due to the development of a large ...

  • 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, ...

  • Reducing Ruptured Reputations – Assessment Tools Reduce Risk of Failure on Sewer Force Mains

    A ruptured sewer pipe can attract a lot of unwanted attention, even when it happens on private property. Last year, hours before celebrities were to arrive at the Golden Globes Awards show at the Beverley Hills Hotel, a reputed sewer pipe burst, spewing a mess of wastewater on the red ...


    By Pure Technologies

  • CSO Control Facility, City of Hackensack, NJ

    Hackensack is the seat of Bergen County in northeastern New Jersey, occupying 4.6 squaremiles. The population of Hackensack is approximately 43,000. Elevation is from three feet to 120 feet above sea level and from a number of locations one can see the New York City skyline, seven miles to the east. During wet weather conditions the sewer system diverted large volumes of untreated waste water to ...

  • Improved wet weather wastewater influent modelling at Viikinmäki WWTP by on-line weather radar information

    Municipal wastewater treatment plant (WWTP) influent is typically dependent on diurnal variation of urban production of liquid waste, infiltration of stormwater runoff and groundwater infiltration. During wet weather conditions the infiltration phenomenon typically increases the risk of overflows in the sewer system as well as the risk of having to bypass the WWTP. Combined sewer infrastructure ...


    By IWA Publishing

  • Griffin Stainless Steel Hydraulic Submersible Pumps have the ability to withstand corrosive environments.

    Griffin Stainless Steel Hydraulic Submersible Pumps, which have the ability to withstand corrosive environments, are available in trash, axial flow, and and material handling models. The pumps range from 4” to 24”. These pumps are designed for heavy duty municipal and industrial dewatering and solids handling pumping applications handling high volumes of water up to 20,000 gpm ...


    By Griffin Dewatering

  • On the Fast Track to Success

    Massachusetts bypass operation fuels success for transit authority with the help of a solid pump strategy. Boston, Massachusetts is one of the largest metropolitan areas in the United States. The city itself contains over 600,000 people, and with all of the surrounding cities taken into account, the population of the area exceeds 4 million. The city also attracts more than 12 million ...


    By Gorman-Rupp Co.

  • Side By Side By Side: The Evaluation of Three High Rate Process Technologies for Wet Weather Treatment

    ABSTRACTMost large combined sewer communities face significant financial investment to address wet weather compliance issues. Innovative, cost-effective methods of dealing with wet weather flows is a must to prevent spiraling rate increases for rate payers. High rate clarification and high rate filtration systems are becoming the technology of choice for treating wet weather flows. The City of ...

  • Redundancy and Reliability – The 5th Generation of Membrane Bioreactor Design

    Membrane bioreactor (MBR) facility designs have progressed through four generations of development (Crawford et al, 2001). The four generations are generally described as evolving from long Solids Retention Time (SRT) package plants, to the inclusion of nutrient removal (total nitrogen and/or phosphorus), to equipment and facility design optimization by reducing both the SRT and the Mixed Liquor ...

  • City of belmont performs comprehensive analysis on rising force mains to guide long-range planning

    To help budget over the next 20 years, the City of Belmont (City) wanted to proactively understand and assess their force mains through a comprehensive condition assessment. Located in the San Francisco Bay area, Belmont serves 26,000 residents and maintains more than 90 miles of sewer mains comprising of 85 miles of gravity mains and 5 miles of force mains, of varying size ...


    By Pure Technologies

  • Seal-Record in Essen, DE. case study

    The largest main collector within the jurisdiction of the Public Utility Company Essen has a nominal diameter of DN 3800. This main collectortown centre presented damages thatwere in need of redevelopment. After a thorough inspection, 33 leaky joints were selected for this pilot project and the company SMG Bautenschutztechnik fur Hoch und Tiefbau GmbH received the order. Project ...


    By AMEX GmbH

  • Long Term Full Scale Comparison of Activated Sludge (AS) With Biological Aerated Filter (BAF)

    The Wastewater Treatment Plant (WWTP) of Frederikshavn, Denmark, was extended in the early nineties to increase its average daily flow to 4,5 MGD (16,500 m³/d) and meet new requirements for nutrient removal (8 mg/l TN, 1,5 mg TP/l). A parallel biological aerated filter (BAF) was the selected as the most economical upgrade of the existing activated sludge plant (AS), and started up in 1995. ...

  • City of Green, Kansas - Case Study

    In September 2012, AdEdge Water Technologies, LLC participated and was awarded a Contract managed by BG Consultants for the equipment pre-selection of a nitrate removal treatment system for the City of Green, Kansas. The scope of the contract included the design, manufacture, and startup of the treatment system. The City of Green is a small community of approximately 125 residents located in ...

  • MLE Process Plus Flow Bending for CSO Flows

    ABSTRACTCombined sewer overflows (CSOs) are gaining the attention of environmentalists and regulators. Communities are taking steps to decrease the number of overflow events and to reduce the amount of pollutants discharged in these events. Like most communities in the Northwest, Mount Vernon, Washington, has a mandate to reduce CSOs to less than one event per year. Engineers, regulators, and ...

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