drum sieve Articles

  • How a Simple Bench-Scale Test Greatly Improved the Primary Treatment Performance of Fine Mesh Sieves

    In Norway fine mesh sieves are frequently used for primary treatment or as the only treatment before wastewater is discharged to coastal waters. The reasons for this are the intensive product development of fine mesh sieves taking place in Norway, and the significantly reduced investment costs and space requirements compared to other primary treatment processes. Historically the design of these ...

  • Microsieving in primary treatment: effect of chemical dosing

    Primary and chemically enhanced primary wastewater treatment with microsieving (disc or drum filtration) was studied at the large pilot scale at seven municipal wastewater treatment plants in Europe. Without chemical dosing, the reduction of suspended solids (SS) was (on average) 50% (20–65%). By introducing chemically enhanced primary treatment and dosing with cationic polymer only, SS ...


    By IWA Publishing

  • Pumps with extended service life for generating biogas from organic waste

    When regular commercial pumps are used to process organic waste, they typically wear out after only a short period of time. Liquids pumped under these conditions attack pumps from two different angles: first with highly abrasive additives and second with liquids that have highly fluctuating pH values and therefore a high level of chemical aggressiveness. These conditions are very tough on seals ...


    By ALLWEILER GmbH

  • Japanese metal powder manufacturer relies on U.S. Rotary Batch Mixer

    Nippon Atomized Metal Powders Corporation uses a patented water-jet atomization process to make high-quality super-fine metal powders from copper, bronze, brass, silver, gold, and stainless steel that are of consistent composition and particle size. Nippon Atomized Metal Powders refined the process of water-jet atomization to produce metal powders with well-shaped, uniform particles in the range ...

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