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  • Rotary Drum Precoat Filters
    Rotary drum precoat filters are used to polish liquid solutions with trace amounts of suspended solids. They are similar in appearance to rotary drum filters, but the construction is very different. The drum is precoated with a medium of known permeability and particle size. The contaminated feed
  • Filter Dramatically Improves Reactor Water Cleanup Systems, Deep Bed Condensate Demineralizer
    for a two-to-five day duration, while others may be. able to stretch run times to 15 days before requiring the precoat exhaustion. The systems require. frequent maintenance, resulting in extremely high annual expenses for man-hours, waste storage and. disposal, replacement filter components, and more
  • Condensate Polishing For Nuclear And Super Critical Power Plants For The 21st Century (.pdf)
    : condensate polishing, mixed bed, deep bed, precoat filter powdered resin, hollow fiber. filtration, ultra low chloride resin. ABSTRACT: This paper provides a brief history and timeline of condensate polishing from the 1950’s. to the present. It then discusses the equipment, designs, process
  • Innovative Resin Technologies for World Class PWR Chemistry Operations (.pdf)
    resin and filter systems, Graver counts more than 30 patents in the utility field. Graver has initiated over 30 unique products & systems that directly affect the utility business,. particularly in the area of condensate polishing. These include the invention of the Powdex®resins and. Ecodex precoat
  • Diatomaceous Earth (DE) Filtration Control & Monitoring
    . Reduced Product Losses. Optimized Processes. Photometric sensors can also monitor and control DE dosing to ensure uniform precoat and controlled body feed. This reduces filter media usage and extends the filter run by dosing only the amount of media necessary for effective filtration. Excessive
  • Treating wastewater from CMP using ultrafiltration
    in Figure 1, silica particles in an oxide slurry can range in size from 20 to 80 nm, far too small to be retained by microfilters alone. To be effective, cross-flow microfilters need to build up a dynamic layer, similar to a filter precoat. Achieving this buildup frequently requires the addition
  • Thin-Cake Filtration Theory (.pdf)
    alternative would be to. use filter aid, either as a precoat or body feed, to increase the filtration performance. B.3.4. Particle Shape. The type and shape of the particles also impact the filtration performance. Hard, spherical. particles will form a permeable cake with increased void volume leading
  • Medical Device Link . Spotlight on Surface Treatment
    and thrombosis attachment while reducing mucosal irritation. Spire Corp., One Patriots Park, Bedford, MA 01730. Ph: 617/275-6000. Parylene coating Custom parylene coating services are available to medical device manufacturers. Complete process engineering, precoat cleaning and masking, parylene vacuum