combination sewer cleaning Articles

  • Sedimentation dynamics in combined sewer systems

    Sediments in combined sewers may negatively affect the performance of sewer systems and significantly promote the formation of hydrogen sulfide. To prevent this, German sewer systems are cleaned regularly but at high costs. In order to optimize the cleaning intervals, this study investigates how deposits build up and change over a defined period under constant conditions. The experiments were ...


    By IWA Publishing

  • World’s largest compressible media filtration plant eliminates combined sewer overflows, with potential for dry-weather use

    The City of Springfield, Ohio, recently opened its 100 MGD enhanced high-rate treatment facility, designed to treat and disinfect combined high-volume stormwater and wastewater flows generated by wet-weather conditions. Utilizing EPA-documented Compressible Media Filtration technology – FlexFilter™ from WesTech – the system can also provide tertiary filtration and disinfection ...


    By WesTech Engineering, Inc.

  • Determining Water Quality Impacts of Combined Sewer Overflow on the Mississippi River Using Full Factorial Analysis

    ABSTRACTThe City of Rock Island, Illinois is completing a Combined Sewer Overflow Long Term Control Plan as part of a Consent Decree with the U.S. EPA. The Consent Decree includes a requirement that Rock Island document existing water quality so that CSO impacts could be identified and potential improvements with various CSO could be assessed. Because of complex river morphology, large flow rate ...

  • Modeling storage capacity in Amsterdam’s sewer system

    About Waternet Waternet is a joint executive within the Amsterdam City Council and the regional management board Amstel, Gooi en Vecht, undertaking strategy, policy, design, planning, projects and administration for wastewater, groundwater and potable water. The organization controls 12 wastewater treatment plants, 3,500km of stormwater and wastewater pipelines, 500km of pressure pipes, ...


    By Innovyze

  • Cleaning mold containing surfaces

    Once a determination is made that a moldy surface can be cleaned instead of removed or demolished, what cleaning agents are effective in removing or killing the mold? Many factors influence the selection of a cleaning agent. 1). The type of surface to be cleaned: Is it porous? Hard such as cement or sheetrock? Soft, such as cloth, fabric or wallpaper? Absorbent and thick such as rugs, ...

  • Financing the Clean Water Atlanta Initiative

    ABSTRACTOver approximately a 15-year period, the City of Atlanta will invest nearly $4 billion in its water and wastewater infrastructure, in part to ensure compliance with Consent Decrees entered into in the late 1990s related to Combined Sewer Overflows (CSOs) and Sanitary Sewer Overflows (SSOs). This investment has occasioned execution of a strategic financial ...

  • CMOM set to clean up in the USA

    Regulatory pressure on public utilities is a regular occurrence around the world, but some requirements are fundamental enough to effect a major change in the way an industry performs. The CMOM program for sewer collection utilities in the USA promises to be such an initiative. Its impact will be profound, as Tom Davies, President of Wallingford Software Inc, explains in this article. The CMOM ...


    By Innovyze

  • 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

  • ASTM Standards Help Meet Need for Clean Water

    The new ASTM Water Portal provides a single access point to standards and related information about ASTM International’s diverse committees working to protect and monitor this vital global resource. Clean and safe water is the underpinning of the quality of life for people around the world. Global economies depend on water, whether it’s to support the manufacturing of goods ...


    By ASTM International

  • Heavy Industry Plant Wastewater Treatment, Recovery ang Recycle Using Three Membrane Configurations in Combination with Aerobic Treatment

    ABSTRACTIn the late 1990’s a major diesel engine manufacturing plant began evaluation of wastewater treatment technologies that would improve the quality of wastewater discharge, would produce treated effluent of reduced oil and grease, BOD and COD load suitable as feed to their sanitary waste biological treatment plant, and eliminate the costs and risks associated ...

  • Geotextile Gravel Pavers keep lake clean in Denver - Case Study

    Denver’s City Park is an iconic symbol of the Mile High City. The oft-photographed park is home to the city’s zoo and the Denver Nature and Science Museum, as well as sports and recreational areas. In 2014, the asphalt parking lot for the Denver Pavilion inside the park was scheduled to be resurfaced. The city, with the help of StudioCPG, a landscape architecture and planning firm, ...


    By Invisible Structures, Inc.

  • 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

  • Field performance of self-siphon sediment cleansing set for sediment removal in deep CSO chamber

    This paper presents a study of the self-siphon sediment cleansing set (SSCS), a system designed to remove sediment from the deep combined sewer overflow (CSO) chamber during dry-weather periods. In order to get a better understanding of the sediment removal effectiveness and operational conditions of the SSCS system, we carried out a full-scale field study and comparison analysis on the sediment ...


    By IWA Publishing

  • Atlanta upgrades to InfoWorks CS to aid environmental program

    The City of Atlanta, Georgia, in the USA, has purchased InfoWorks CS to help it meet stringent US Environmental Protection Agency (EPA) and Georgia State Environmental Protection Division (EPD) requirements for discharge of its wastewaters to the Chattahoochee River. The Chattahoochee, one of the smallest rivers in the US supplying a metropolitan area, provides 80% of the city’s water needs. ...


    By Innovyze

  • 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 ...

  • Tortilla Plant

    Problem: A major tortilla plant, producer of corn and flour tortillas, tortilla strips and taco shells, was having problems with high levels of contaminants in their wastewater. Their major sources of waste are from their corn cooking operation and from their principal plant clean up performed twice a week. Although minor, boiler blow down and fryer cleaning are also waste sources for ...


    By HydroCal Inc.

  • Survey monitoring results on the reduction of micropollutants, bacteria, bacteriophages and TSS in retention soil filters

    A main source of surface water pollution in Western Europe stems from combined sewer overflow. One of the few technologies available to reduce this pollution is the retention soil filter. In this research project, we evaluated the cleaning efficiency of retention soil filters measuring the concentration ratio of standard wastewater parameters and bacteria according to factors limiting ...


    By IWA Publishing

  • Case Study - KIA E-Coat Wastewater and Treatment Process

    KIA Automotive uses a water-borne Electrodepostion (E-Coat) paint process that produces various wastes including rinse waters containing Zinc (Zn), Nickel (Ni) & phosphorous (P) waste. Most of the waste is found in the rinse waters from the e-coat overflows that contain less 1000 mg/l TSS. Some of the “dumps” contain detactified paint waste concentrate in small quantities. The various ...

  • Hyde ultrafiltration for tumbling/vibratory deburring applications

    Challenge Fabrication manufacturer has an issue with discharging tumbling water from two vibratory deburring systems. Customer Hartzell Manufacturing Industry Medical, Electronic and Bank Security Product Hyde Ultrafiltration System Business Benefits Realized ...


    By PRAB, Inc

  • Characterization of the potential impact of retention tank emptying on wastewater primary treatment: a new element for CSO management

    Theoretical studies have shown that discharges from retention tanks could have a negative impact on the WWTP's (Wastewater Treatment Plant) effluent. Characterization of such discharges is necessary to better understand these impacts. This study aims at: (1) characterizing water quality during emptying of a tank; and (2) characterizing the temporal variation of settling velocities of the waters ...


    By IWA Publishing

Need help finding the right suppliers? Try XPRT Sourcing. Let the XPRTs do the work for you