Sewers Articles

  • ARA Meiningen (AUT) Municipal Plants - Case Study

    Digester: 1 x 4.000 m³ sewage sludge digestion Scope of services: sewage sludge digester agitator, flare, heat exchanger, gas equipment Start-up: ...

  • Modular Reed Bed - Case Study

    The modular reed bed is an award winning, innovative solution for small footprint tertiary treatment. This case study follows the implementation of this technology on a small and remote sewage works which was overloaded during high rainfall. This project saved 91% in costs for the effected utility (which had a budget of £300k for the project) and provided a reduced health and safety risk ...


    By Greener Waste Technology

  • Sewage Sludge Recycling to Land and Disposal

    The Problem: Sewage treatment is the process of removing contaminants from wastewater, primarily from household sewage. It includes physical, chemical, and biological processes to remove these contaminants and produce environmentally safe treated wastewater (or treated effluent). A by-product of sewage treatment is usually a semi-solid waste or slurry, called sewage sludge, that has to ...


    By Dirk European Holdings LTD

  • Sewer Lift Station - Case Study

    Client: The City of Phoenix Facility:  A sewer Lift Station (LS) located directly adjacent  to a residence. (LS 48) Problem: The impact of facility safety and maintenance were main concerns. Decision: The client chose to replace a chemical scrubber with a BOHN BIOFILTER system. ...

  • Patoka Lake Plant upgrade requires new control valves

    Patoka Lake Regional Water & Sewer District (PLRWSD) serves 11 counties in southern Indiana with a population of around 130,000. The distribution of water travels through approximately 850 miles of pipe ranging in size from sizes 3 to 30 inches and includes numerous elevated towers or ...


    By Singer Valve Inc.

  • Hydrodynamic Modeling of SuDS (BMPs or LIDs) schemes - Case Study

    La Marina is an urban area within the Municipality of Elche (South of Alicante, on the Mediterranean Spanish coast), that is rapidly growing. This growth leads to an increase of impervious surfaces, which generate greater run-off volumes with deteriorated water quality. ...


    By XP Solutions

  • Studies of a microbial mixture with useful properties for the treatment of organic sewage

    Background: The importance of bacteria in the treatment of raw sewage and water purification is well known. Here, we report on Sewper Rx, a unique mix of bacteria with powerful properties for treating sewage and other water cleaning applications, and we describe properties of the bacterial components of the treatment mixture which likely account for its enhanced organic solids ...


    By Reliant Water Technologies

  • Municipal Wastewater

    Municipal wastewater namely sewage is generated by residential, institutional, commercial and industrial establishments. It includes household waste liquid from toilets,baths,showers,kitchens, and sinks drained into sewers. In many areas, sewage also includes liquid waste from industry and commerce. The separation and draining of household waste into greywater and blackwater is becoming more ...


    By Horizon Water Co., Ltd.

  • Thames Water to be fined record £20m for sewage spill

    Last week it was announced that Thames Water would be fined a record £20.3million for polluting the body of the River Thames with around 1.4billion litres of raw sewage.The company admitted their offence and accepted the penalty. Read more about this, and hear our thoughts, in our exclusive  ...


    By Aquaread Limited

  • Modeling fats, oil and grease deposit formation and accumulation in sewer collection systems

    Fats, oil and grease (FOG) deposits in sewer systems are responsible for approximately 25% of all annual line blockages in the United States and lead to the release of 3–10 million gallons of untreated wastewater to the surrounding environment. Considerable effort has been made to maintain the conveyance of wastewater by cleaning pipes that have a significant FOG deposit accumulation. Changes ...


    By IWA Publishing

  • Field campaign on sediment transport behaviour in a pressure main from pumping station to wastewater treatment plant in Berlin

    As part of the project KURAS, the Berliner Wasserbetriebe realized a field campaign in 2015 in order to increase the process knowledge regarding the behaviour of transported sediment in the pressure main leading from the pumpstation to the wastewater treatment plant. The field campaign was conducted because of a lack of knowledge about the general condition of the pressure main due to its bad ...


    By IWA Publishing

  • Different erosion characteristics of sediment deposits in combined and storm sewers

    To investigate the different erosion patterns of sediments in combined and storm sewers, sediments from three separate sewer systems and two combined sewer systems in urban Shanghai were collected for the flushing experiments. These experiments were conducted with different consolidation periods and shear velocities. As the consolidation period increases, dissolved oxygen exhibits a positive ...


    By IWA Publishing

  • A greenhouse gas source of surprising significance: anthropogenic CO2 emissions from use of methanol in sewage treatment

    The impact of methanol (CH3OH) as a source of anthropogenic carbon dioxide (CO2) in denitrification at wastewater treatment plants (WWTPs) has never been quantified. CH3OH is the most commonly purchased carbon source for sewage denitrification. Until recently, greenhouse gas (GHG) reporting protocols consistently ignored the liberation of anthropogenic CO2 ...


    By IWA Publishing

  • Impacts of onsite greywater reuse on wastewater systems

    Together with significant water savings that onsite greywater reuse (GWR) may provide, it may also affect the performance of urban sewer systems and wastewater treatment plants (WWTPs). In order to examine these effects, an integrated stochastic simulation system for GWR in urban areas was developed. The model includes stochastic generators of domestic wastewater streams and gross solids ...


    By IWA Publishing

  • Continuous Pyrolysis Facility for Sewage Sludge Treatment

    The amount of sewage sludge is catastrophically increased in the latest few decades due to functioning of the municipal sewage treatment facilities. Dry sewage sludge contains 70-90% of the organic substances and 10-30% of the inorganic substances, which are dangerous for human health in case of inappropriate utilization. The continuous pyrolysis technology presents the unique sewage sludge ...


    By Polvax-Ukraine

  • Release of hydrogen sulfide in a sewer system under intermittent flow conditions: the Eiceira case study, in Portugal

    The presence and fate of hydrogen sulfide in wastewater systems were studied in two stretches of an intercepting sewer system located in a coastal village, in Portugal. A range of hydraulic parameters were obtained and liquid and gas phase measurements were carried out, both continuously and through intensive sampling campaigns. Upstream, where flow rates were relatively low, dissolved sulfide ...


    By IWA Publishing

  • A comparison of three dual drainage models: shallow water vs local inertial vs diffusive wave

    In this study we compared three overland flow models, a full dynamic model (shallow water equation), a local inertial equations model (gravity wave model), and a diffusive wave model (parallel diffusive wave model). The three models are coupled with the same full dynamic sewer network model (SIPSON). We adopted the volume exchange between sewer and overland flow models, and the hydraulic head ...


    By IWA Publishing

  • Phyto-dewatering of sewage sludge using Panicum repens L.

    Experiments in the field environment have been conducted to study the growth of Panicum repens L., an aquatic plant, in the sewage sludge matrix. The experiments were also carried out to investigate the ability of this plant to dewater sewage sludge to increase the capacity of conventional drying beds. In addition, the ability of Panicum repens L. to reduce the sludge ...


    By IWA Publishing

  • Influences of rainfall variables and antecedent discharge on urban effluent concentrations and loads in wet weather

    For storm drainages inappropriately connected with sewage, wet weather discharge is a major factor that adversely affects receiving waters. A study of the wet weather influences of rainfall-discharge variables on storm drainages connected with sewage was conducted in the downtown Shanghai area (374 ha). Two indicators, event mean concentration (EMC) and event pollutant load per unit area ...


    By IWA Publishing

  • Occurrence and elimination of antibiotics in three sewage treatment plants with different treatment technologies in Urumqi and Shihezi, Xinjiang

    Fourteen antibiotics, including five quinolones (QNs), five sulfonamides (SAs), and four tetracyclines (TCs), were selected to investigate their occurrence and elimination in three sewage treatment plants (STPs) by employing different treatment technologies in Urumqi (two STPs) and Shihezi (one STP), China. The STP in Shihezi was chosen as representative to investigate the distribution of ...


    By IWA Publishing

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