wastewater utility Articles

  • What is turbidity?

    Turbidity measures the relative clarity of a water sample. It is determined by the amount of scattering that occurs when a light source is shined through a water sample. Light scattering is caused by increased concentrations of suspended particles in water that are not individually visible to the naked eye, which can give the water a cloudy appearance. This parameter is used as a general ...


    By MANTECH

  • Singapore a model for effective water management

    Singapore continues to be a model of effective water management as more and more countries begin experiencing water scarcity. To some, the Asian city-state (which occupies an area roughly a quarter the size of Rhode Island) may seem an unlikely beacon for water efficiency. But, to achieve water security and self-sufficiency, residents have been helping leaders meet national water management ...


    By Fluence Corporation

  • Development and Application of Oxygen Demand Testing using Industrial Effluent - Case Study

    Abstract The purpose of this study is to develop capacity and protocols for oxygen demand testing that can be used for instruction and research within the BioScience Technology program. For application purposes we chose the PeCOD® Analyzer which offers a unique nanotechnology-based approach to Chemical Oxygen Demand (COD) analysis. Background ...


    By MANTECH

  • A primer on energy efficiency for municipal water and wastewater utilities

    This primer is concerned with energy use and efficiency of network-based water supply and wastewater treatment in urban areas. It focuses on the supply side of the municipal water cycle, including the extraction, treatment, and distribution of water, and collection and treatment of wastewater-activities which are directly managed by Water and Wastewater Utilities (WWUs). The main challenges to ...


    By IWA Publishing

  • Creating a national benchmarking system for the utilities of water supply and wastewater sector in Russia

    Despite the vast resources of drinking water, Russia today is facing some serious problems in the water supply industry. The authors believe that creating a nation-wide benchmarking for Russia's water industry will play an important role in the development process for efficiently functioning water utilities. The main objective is to make improvements in quality of the services provided to ...


    By IWA Publishing

  • The Missing Piece: Utilizing evaporation technology to dewater RO reject wastewater

    Reverse Osmosis reject often has high salinity making it prohibitive for discharge to the local sewer facility and expensive to have hauled away. The white paper discusses the advantages of evaporation in general, as well as the differences between Thermal Evaporators and Mechanical Vapor Compression (MVC) Evaporators. Also discussed are the technical details of RO reject water chemistry as ...


    By ENCON Evaporators

  • How big is the distributed energy opportunity for water and wastewater utilities?

    Energy costs for water utilities are large, and growing Energy is a significant cost for many water utilities, and costs are growing as more energy-intensive forms of water supply, including desalination, are being used. Energy is typically the second-largest utility budget item in developed countries, after labour. In many developing countries, energy can account for 70% or even more, of ...

  • Rehabilitation of the BNR Facilities at the Greenville Utilities Commision Wastewater Treament Plant

    ABSTRACTThe Greenville Utilities Commission Wastewater Treatment Plant (GUC WWTP) is a 17.5 mgd treatment plant designed to meet effluent total nitrogen and total phosphorus limits of 6.0 mg/L and 2.0 mg/L, respectively, through biological nutrient removal. The treatment plant is divided into two separate activated sludge systems; the north and south plants. The treatment plant has consistently ...

  • The performance of water utilities in Jordan

    This paper aims to measure the relative performance of Jordan's water utilities for water sector (WS) and wastewater sector (WWS), and to investigate the major factors behind their inefficiencies. DEA (non-parametric method) and Tobit model (parametric method) were used at two stages. At the first stage DEA was used to evaluate the utilities' efficiency and to investigate the utilities' scale ...


    By IWA Publishing

  • Emergency Vs. Maintenance Repairs for Utilities.

    With populations rising throughout towns and cities in the United States there is a growing need to improve the nation’s water and wastewater infrastructures. Reliable water provisions are needed for continued development and sustenance. At the same time, it is necessary to properly discharge wastewater clinically and efficiently. Much of the inadequacies with water and wastewater assets ...


    By EnTech Engineering, Inc

  • Biostyr, Wigan WwTW , united utilities

    The Client United Utilities (UU) are the 2nd largest water company in England/Wales. They are responsible for an area in the north west of the UK, which includes major cities such as Manchester and Liverpool. Wigan WwTW is located north west of Manchester near Parbold in Lancashire. As part of the AMP4 strategy Wigan underwent an overall redevelopment and upgrade including the ...


  • What is Wastewater?

    What is wastewater? Wastewater, the waste discharge that first comes to mind in any discussion of stream pollution, is the discharge of domestic wastewater, which contains a large amount of organic waste. Industry also contribute substantial amounts of organic waste, some of which comes from vegetable and fruit packing; dairy processing; meat packing; tanning; processing of poultry, ...

  • Electric Utilities Hook up To Biogas

    Pennsylvania Power & Light, Alliant Energy, Wisconsin Electric and Portland General Electric are some utilities that are plugging into anaerobic digestion projects. AT the October, 2001 BioCycle conference on “Renewable Energy from Organics Recycling,” the director of the Iowa Energy Center, Floyd Barwig, pointed out that the possibility of separating the United States from Middle ...


  • Internal audit, certification and maturity assessment based on ISO55001 in Sendai wastewater utility, Japan

    Sendai Wastewater Utility acquired the first certification of ISO55001 in Japan at March 2014. ISO55001 is the international standard for asset management systems and was published in January 2014. During the process towards certification, the maturity assessment, internal audit and certification exam based on ISO55001 were all executed. It was possible, therefore, to compare the three ...


    By IWA Publishing

  • Automated Treatment System Used to Solve a Costly and Environmentally Critical Wastewater Problem for an East Coast Utility

    BACKGROUND Hydrocarbon and particulate contamination in wastewater is a well-known environmental hazard.  Due to tightening environmental regulations, an ever-increasing source of such contamination in major cities comes from water collected from underground utility vaults and manhole water.  This contaminated water, contains a smorgasbord of potential contaminants from transformers, ground ...


    By Walchem, Iwaki America Inc.

  • Case Study: Georgia wastewater utility credits Ecosorb for significant reduction in odor complaints

    The Douglasville-Douglas County Water and Sewer Authority (WSA) has been delivering quality water and wastewater service to more than 90,000 Douglas County residents for over 17 years. WSA's slogan "Award-Winning Service For Our Local Community," proves to be much more than just advertising jargon. Over the past 17 years, their honors have included three citations from the U.S. Environmental ...


    By OMI Industries (OMI)

  • Case Study - Georgia wastewater utility credits Ecosorb for significant reduction in odor complaints.

    The Douglasville-Douglas County Water and Sewer Authority (WSA) has been delivering quality water and wastewater service to more than 90,000 Douglas County residents for over 17 years. WSA’s slogan “Award-Winning Service For Our Local Community,” proves to be much more than just advertising jargon. Over the past 17 years, their honors have included three citations from the U.S. ...


    By OMI Industries (OMI)

  • Sulfate reduction and mixotrophic sulfide-utilization denitrification integrated biofilm process for sulfate-laden wastewater treatment and sulfur recovery

    A novel and integrated biofilm process – the sulfate reduction (SR) and mixotrophic (MR) sulfide-utilization denitrification process (SMSD) – was recently proposed for sulfate treatment and sulfur recovery. The process consisted of two bioreactors: a 5.1 L anaerobic upflow reactor for SR, and a 3.5 L anaerobic upflow reactor for MR desulfurization–denitrification. The ...


    By IWA Publishing

  • The Use of Water Quality and Process Models for Minimizing Wastewater Utility Greenhouse Gas Footprints

    The Use of Water Quality and Process Models for Minimizing Wastewater Utility Greenhouse Gas Footprints provides an understanding of the processes that are responsible for the major contributions to GHG emissions from WWTP and sewer systems (e.g. heterotrophic denitrification, autotrophic nitrification, autotrophic denitrification, methanogenesis). This knowledge is translated into mathematical ...


    By IWA Publishing

  • The dissolution characteristics of calcium sulfide and utilization as a precipitation agent in acidic wastewater effluent treatment

    The dissolution characteristics of CaS in the presence of CO2 has been investigated by monitoring sulfide speciation, solution conductivity and pH during dissolution. The sulfide speciation associated with CaS dissolution was utilized for metal precipitation from acidic wastewater effluents. The mechanism involved in the dissolution process was observed to be pH-dependent, characterized by ...


    By IWA Publishing

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