sewer construction Articles

  • Sewer Construction Bid

    Advanced or tertiary wastewater treatment tries to remove all the impurities from the wastewater to produce almost drinking quality effluents. However, this is an expensive process requiring high level technical expertise, resources and machinery. Finally, disinfection of the treated wastewater may be carried out to destroy harmful bacteria and other organisms that may still be present in ...


    By IWA Publishing

  • Constructed wetlands for combined sewer overflow treatment in a Mediterranean country, Portugal

    The use of constructed wetlands as a valuable and attractive method for combined sewer overflow (CSO) treatment has been demonstrated in several studies. In Portugal, a Mediterranean country having usually a long dry period, there are still no applications of this technology. The purpose of this research is to gather information and know-how required for the design and management of this type of ...


    By IWA Publishing

  • Remediating Unforeseen Sewer Contaminants

    Getting the PCBs out Who: Jersey City, N.J., Municipal Utilities Authority Tons of clean sediment removed: 4,469 Tons of PCB-contaminated sediment: 2,502 Consulting engineer: Boswell Engineering: South Hackensack, N.J. Environmental maintenance contractor: National Water Main ...

  • Northwest Side Relief Sewer

    Meticulous planning, design and construction management went into devising reliable solutions for this award-winning tunnel project that alleviated persistent flooding and improved the community's water quality. Like many U.S. cities, Milwaukee faced a serious and growing problem. Population growth and urban development had produced ever-increasing volumes of wastewater and stormwater. Aging and ...


    By Black & Veatch Corporation

  • Multifaceted sewer improvements program eliminates sewer connection moratorium and system overflows

    The sewer system serving Borough of Jewett City, Connecticut dates from the late 1800’s and was originally constructed as a combined sewer system with the discharges directed to the area rivers. In the 1970’s, the raw sewage discharges from the Borough system were removed from the rivers and redirected to a newly constructed wastewater treatment facility. However, the overflows from the ...

  • Rehabilitation of a Large Semi-Elliptical Sewer

    ABSTRACTThe Sanitation Districts of Los Angeles County (Districts) own, operate, and maintain a wastewater treatment and collection system that includes approximately 1300 miles of sanitary sewers ranging from 6 to 144 inches in diameter. A portion of the Districts’ Joint Outfall “A” Trunk Sewer was constructed of cast-in-place reinforced concrete having a semi-elliptical cross section and ...

  • Sacramento State – upgrading sewer to “green”

    Tidelands Construction Company installed a new Flowtite Septic Tank on the campus of California State University in Sacramento. This upgraded sewer system was part of a school-wide “green” building initiative. The governing body at one of California’s finest universities began a large-scale “green building” project designed to reduce the school’s harmful ...

  • Excerpt Advanced Sewer Technologies Paper

    Abstract  This document seeks to collect into one place current and new technologies about sewerage system design. The document organizes the information found in the 295 documents that were reviewed into six subject areas: Advanced Onsite Technologies; Alternative Wastewater Collection System Designs and Technologies; Gravity Sewer System Design and Technology; Infiltration ...

  • Pumping Wastewater into Existing Pressure Sewer

    Romtec Utilities designs, manufactures, and supplies pumping systems for many different applications. Our systems include all structural, all mechanical, all electrical, and all communications systems in a single purchase. Many of our systems are designed and supplied to handle sewage and wastewater flows in a lift station design. In many scenarios, these lift stations ...


    By Romtec Utilities Inc.

  • Installing gravity sewer in tough Georgia rock

    It took a contractor who was receptive to an innovative new installation approach, a good deal of patience and a whole lot of determination — after two previous attempts by other contractors using drills and air hammers were unsuccessful — to finally conquer a pesky 800-foot (243.8 m) stretch of tough Georgia blue granite. Hence, project owner Coweta County Water and Sewer Authority ...


    By Vermeer

  • Vacuum Sewers – Engineered Solution for a Multitude of Problems

    ABSTRACTThe City of Albuquerque is celebrating its 300th anniversary in the 2006. The city itself has been growing at a very rapid rate, expanding the urban boundaries into the rural countryside. This urban expansion has been most apparent in the river valleys of the Rio Grande, where groundwater is shallow and topography is very flat. As the urbanization of the valley areas north and south of ...

  • Sewer Siphon Assessment and Air Jumper Design

    ABSTRACTIn response to customer complaints about sewer odor, Orange County Sanitation District (OCSD), California launched a project to investigate the ventilation requirements of existing sewer siphons, to verify adequacy of existing air jumper operation, and determine the need for new air jumpers or additional air jumper capacity. The challenge was assessing sewer siphon air jumper adequacy ...

  • Low pressure sewer system for affluent existing neighborhood

    The River Oaks subdivision is an affluent, mature residential community located in Fairfax, County Virginia which includes 114 existing single family dwelling units with individual septic tank drainfields. The Fairfax County Health Department determined that several drainfields have failed and expressed concern that others would soon fail. In order to prevent the health and environmental problems ...

  • Adaptation of sewer networks using integrated rehabilitation management

    The urban water structure is aging and in need of rehabilitation. Further, the need to address future challenges (climate change, urban development) also arise lines. This study investigates if it is possible to combine rehabilitation and adaptation measures. To do so, we combined an urban development model, an urban drainage model and a rehabilitation model. A case study of a medium-sized ...


    By IWA Publishing

  • 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.

  • Factors affecting economies of scale in combined sewer systems

    A generic model is introduced that represents the combined sewer infrastructure of a settlement quantitatively. A catchment area module first calculates the length and size distribution of the required sewer pipes on the basis of rain patterns, housing densities and area size. These results are fed into the sewer-cost module in order to estimate the combined sewer costs of the entire catchment ...


    By IWA Publishing

  • Black & Veatch to design sewer/stormwater facilities for Cincinnati

    Black & Veatch (Overland Park, KS) announced that it has received a contract to design a $244 million tunnel system, pump station, and treatment facility in Cincinnati, Ohio, to help the city better manage its sewage and stormwater flows. The company said that it is currently conducting geotechnical investigations to determine the location ...

  • Time for a re-examination of sewer design flow criteria

    Each year, many miles of new or rehabilitated sewer lines or pumping stations are designed and constructed based on flow criteria that may be unrelated to the desired level of system performance. Because of the need to reduce the risk of sanitary sewer overflows and sewer backups into buildings, it can be beneficial to re-examine the basis of sewer hydraulic design. Traditional approaches such as ...

  • Increased Pressure Removes “Pressure” for Regional Sewer Authority

    Founded in 1925, the Western Carolina Regional Sewer Authority (WCRSA) is a special purpose district of South Carolina, located in northwestern South Carolina. The organization serves over 400,000 customers in Greenville County and parts of Anderson, Spartanburg, and Laurens Counties, covering a total of 296 square miles. WCRSA maintains 300 miles of major sewer trunk lines and conducts ...


    By Gorman-Rupp Co.

  • DFW direct bury of storm sewer case study

    Airport Solutions North Texas Contracting has placed the first HOBAS pipe at DFW International Airport in the Dallas/Fort Worth mid-cities. That first installation was a repair to an 84-inch corrugated steel culvert that had failed and created a sink hole approximately 30 feet deep and almost 20 feet in diameter after a series of heavy rains in 2007. North Texas Contracting of Keller, Texas ...


    By Hobas Pipe USA

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