sewage air valve Articles

  • Quebec recovers heat energy from sewage in Baied`Urfe

    Energy recovery from municipal sewage and greywater offers cities a new reliable resource.  Erwin Schwartz of DDI Heat Exchangers Inc. reports on a novel application of rectangular, wide-gap heat exchangers that has worldwide potential. The Canadian company DDI Heat Exchangers Inc. installed, with the support of the Quebec provincial government and municipal sewage authority, the first ...


    By DDI Heat Exchangers Inc.

  • Rotork actuators with profibus

    Introduction Rotork IQPro intelligent electric actuators with Profibus two-wire digital control provide an adaptable, reliable and economical solution for automated valve monitoring and control, as illustrated by examples in the UK water and sewage treatment industries. Two recent projects undertaken by Wessex Water serve to illustrate the benefits of adopting Profibus-enabled ...


    By Rotork

  • Recovering Wasted Energy: Beneath the city streets

    Sewage heat recovery graphNo one likes to think about it, but city planners and engineers often have no choice but to deal with it, and that’s sewage. Though techniques vary somewhat from place to place and from facility to facility, sewage generally flows down pipes with multiple steps in place designed to remove and treat as many solids as possible, before returning the freshly distilled ...


    By DDI Heat Exchangers Inc.

  • Local company T-T, is a `grand design` case study

    Onneley based T-T Pumps with their diverse capabilities and products were selected to supply the pumping system for the Grand Designs project which will be aired on Wednesday 28th September 2011. Incorporated in the restorations of the rusting and rotten hulk of an old lifeboat station in Tenby, the company and its team supplied and commissioned a system to deal with the buildings wastewater. ...


    By T-T Pumps Ltd.

  • Everything Depends on Pressure And Maintenance

    Energy and cost efficiency of biological treatment plants Every biologically working sewage plant needs a compressed air station for the oxygen supply of the aeration basin. This station only works at the highest possible energy efficiency level if excessive plant pressure through the subordinated system, excessive intake temperatures due to insufficient aeration and deaeration, and ...

  • Temporary treatment systems for large construction site in Stratford, East London

    Filter refurbishment program for 2000 site workers/staff Site Contractor: Natta Building Company Peak flow to treatment: 10.5l/s Designed consent standard: 20 mg/l BOD, 30 mg/l TSS & 10 mg/l NH4 Maximum incoming BOD: 380 mg/l Maximum incoming NH4: 50 mg/l Units supplied: 4 off 300pe GRP units 1 off 750pe steel unit 2 off HB50 Lamella settling tanks (primary and ...


    By WPL Ltd

  • Typical Sensor Location Considerations

    The sensor mounting location within a space may be dependent on many variables. There are no specific formulas since each application will have it’s own determining factors and priorities. These include, but are not limited to: source of gas: Is the source a combustion exhaust from a vehicle or furnace or a vapour from a tank spill, pipe leak, or faulty valve? density of ...


    By Arjay Engineering Ltd.

  • Case study - Emergency equipment for the absorption of chlorine in hospitals

    Chlorine is a strong oxidant that in normal conditions and in its pure state formsdichlorine, a toxic gas with a yellow-greenish colour formed by diatomic molecules (Cl2) that are about 2.5 times heavier than air and have an unpleasant smell. Among its multiple applications and due to its powerful oxidising nature, it is widely used forwater purificationin sewage treatment plants and as ...


    By Bioconservacion SA

  • North Creek pumping station, King County, WA

    The new North Creek Pumping Station in King County, Wash., had to maintain the Department of Natural Resources' national reputation for outstanding reliability. To make sure it did, the design team applied the most advanced pump technology and vibration prevention methods. And the designers and utility put extra attention on meeting operations and maintenance needs. "We included folks from ...


  • Temporary treatment systems for large construction site in Stratford, East London case study

    Posted March 2009 by WPL Limited Filter refurbishment program for 2000 site workers/staff Site Contractor: Natta Building Company Peak flow to treatment: 10.5l/s Designed consent standard: 20 mg/l BOD, 30 mg/l TSS & 10 mg/l NH4 Maximum incoming BOD: 380 mg/l Maximum incoming NH4: 50 mg/l Units supplied: 4 off 300pe GRP ...


    By WPL Ltd

  • Short Showers Replace Deep Baths: Drought Conditions Changing the Way Society Thinks About Water Infrastructure

    While proactive water conservation is a smart way for consumers to react to climate change, the crisis puts increased pressure on water utilities to better manage their resources and pipeline networks. Change is in the air. One only needs to check the daily news to understand why climate change, drought and water infrastructure have become frequent buzzwords heard around the water ...


    By Pure Technologies

  • Wastewater Mining and Reuse: Creating Benign Future Scenarios

    Wastewater mining: In addition to being perhaps the most uninviting combination of words, it sounds like a most unlikely idea. But for almost 30 years, Aqueonics, now headquartered in Greenville, SC, has pioneered such systems, starting in the ’80s, with its first wastewater mining project. For that project, Aqueonics provided an onsite or decentralized treatment system for a developer in ...


    By Aqueonics, Inc.

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