• Skip to primary navigation
  • Skip to content
  • Skip to primary sidebar
  • Skip to secondary sidebar
  • Skip to footer
    • English
      • Italiano (Italian)
      • Русский (Russian)
      • Español (Spanish)
      • Français (French)
      • Deutsch (German)
      • 日本語 (Japanese)
      • Português (Portuguese (Brazil))
    • info@vsep.com
    • +1-775-783-7600
    New Logic Research
    • Home
    • Technology
      • Benefits
      • VSEP System Components
      • Membrane Technology
      • Applications
      • FAQ
      • Pilot Testing
    • Products
      • Series i
        • i18 VSEP Filtration System
        • i36 VSEP Filtration System
        • i84 VSEP Filtration System
        • High Pressure Systems
      • Lab & Pilot Systems
        • Series B
        • Series LP
        • Series P50
        • Batch Titan® 1000
      • Spiral RO Systems
        • S-80 Spiral RO System
        • S-240 Spiral RO System
        • S-800 Spiral RO System
        • S-1600 Spiral RO System
        • S-3200 Spiral RO System
        • S-7200 Spiral RO System
        • S-9600 Spiral RO System
        • S-18000 Spiral RO System
        • S-28800 Spiral RO System
        • S-36000 Spiral RO System
      • VSEP Membrane Cleaners
        • NLR 103
        • NLR 202
        • NLR 404
        • NLR 505
        • NLR 550
        • NLR 707
        • NLR 757
        • NLR 758
        • NLR 759
    • Industries
      • Biogas
      • Chemical Processing
      • Electronics
      • Food and Beverage
        • Beverage Production & Bottling
        • Dairy Processing
        • Olive Processing
      • Manufacturing
      • Landfill Leachate
      • Manure Management
      • Mining
      • Paints & Pigments
      • Petroleum Processing
        • Frac Water
      • Power Generation
        • Nuclear Power
      • Pulp & Paper
      • Renewable Energy
      • Wastewater Treatment
        • RO Reject / Brine Minimization
        • Zero Liquid Discharge (ZLD)
      • Water
    • Company
      • Careers
      • Distributors
      • Events
      • News
    • Downloads
      • Case Studies & Application Notes
      • Technical Articles Featuring VSEP
      • VSEP Brochure
      • VSEP Video Clips
      • VSEP System Drawings
      • New Logic Customer Forms
    • Contact
      • Join our Mailing List
      • Privacy Policy
      • Sitemap

    News

    An Examination of the use of VSEP Nanofiltration Technology to Replace Cold, Warm and Hot Lime Softening

    February 1, 2001

    A VSEP nanofiltration system can eliminate TSS, reduce TDS by 85% and total hardness by 99% on high fouling feed water without the use and mess of a dry chemical precipitation process. Problems such as carryover due to temperature variation, clogged sprayers, flow changes and chemical control are eliminated with a membrane system.

    High feed turbidity has been a limitation since the introduction of membranes. The tight spacing of spiral wound membranes means that sand, grit, organic matter and solids will cause catastrophic plugging of the membrane. The permanent nature of high turbidity fouling requires extensive pretreatment equipment in some cases doubling the capital and operating cost of a membrane treatment system. Operator workload can double during times of high feed water turbidity.

    However, with the use of VSEP (Vibratory Shear Enhanced Processing), high shear rates are delivered directly to the surface of the membrane minimizing the energy requirements and the gel layer buildup while maximizing flux rates. By deriving shear from membrane movement irrespective of the fluid velocity, VSEP delivers shear 10 times that of conventional cross flow systems. Unlike conventional membrane configurations, the direction of the shear is changed at a frequency of the vibration creating over 200 G’s of force with each change in direction. Membrane disks are stacked on top of each other to make up to a 2100 ft² VSEP filter pack. The one piece membrane module can be changed out in about an hour.

    The membrane module is designed and built to operate at the upper membrane temperature limit of 70C – 90C. High temperature can be used to reduce bio fouling, mineral scale and FOG. This feature increases the flux rate due to lower fluid viscosities.

    Primary Sidebar

    About us
    • Company
    • Careers
    • Distributors
    • Events
    • News

    Secondary Sidebar

    New Logic Research
  • New Logic provides a breadth of products and services for pure water and wastewater treatment, industrial and chemical processing, power, pulp and paper, oil and gas production and processing, paint and pigments and electronics industries.
  • Contact a Sales Engineer
    • This field is for validation purposes and should be left unchanged.
  • Subscribe to
    our newsletter

    Address:
    2527 Aviation Way
    Minden, NV 89423

    775-783-7600
    info@vsep.com
    • English
      • Italiano (Italian)
      • Русский (Russian)
      • Español (Spanish)
      • Français (French)
      • Deutsch (German)
      • 日本語 (Japanese)
      • Português (Portuguese (Brazil))

    Copyright © New Logic Research All Rights Reserved.