Ultrafiltration

Digested Organics provides two different ultrafiltration platforms to remove suspended solids. Utilizing cross-flow membrane technology, both solutions offer robust clarification and concentration for a wide range of wastewater and process streams.

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Stainless Steel Ultrafiltration

  • Porous stainless-steel tubular membranes (5/8” ID) with internal titanium dioxide coating (0.02 micron average pore size)
  • Welded and bolted construction in ASME code-stamped pressure vessel; 5′, 10’ and 20’ lengths available in any diameter
  • Membranes last 10+ years in challenging applications with little downtime, maintenance, or repair
  • Simple, robust system with no internal moving parts and efficient externally mounted pump
  • Flexible and tunable: Can operate in batch-mode or continuously and be mounted horizontally or vertically
  • Minimal pre-filtration required
  • Proudly manufactured in the USA

 

Tube

 

 

Tube Module

 

 

 

 

Large vertical UF project for manure digestate being installed in Wisconsin, 2023

 

 

Polymeric Ultrafiltration (pUF)

  • Our pUF consists of a unique PVDF membrane chemistry, energy-saving module design, and patented closed-loop operating protocol for achieving high permeate recoveries.
  • Our pUF performs in high strength, high solids wastewater treatment or thickening applications, providing UF quality effluent (0.04 micron pore size) with minimal energy consumption.
  • Our pUF is the world’s only outside-in crossflow UF membrane filtration technology for high strength and high solids wastewater.

 

 

Our Parallel Channel PVDF Module

  • Outside-in permeation occurs in parallel channels
  • The required crossflow velocity to achieve high flux rates is 2-10x less than tubular membranes, resulting in dramatic energy savings
  • High membrane packing density (385 ft2 in a 10” x 10’ module)
  • Up to 20 psi backwashing capability to maintain peak performance
  • Systems are designed to run continuously in a feed and bleed configuration or with internal concentrate thickening in a repeat batch configuration
  • Typical electrical consumption: 2.5-3.0 kwh/1,000 gal of permeate

Applications

  • Food and Beverage
  • Food Waste
  • Agriculture
  • Landfills