Technology Catalog - Vendor Detail

New Logic Research VSEP - VSEP Membrane
Celebrating 29 years of innovation

Company Description:

VSEP delivers results that conventional separation technology systems can't. Using Vibratory Shear Enhanced Processing (VSEP), this patented, fouling-resistant membrane filtration system makes conventional treatment systems obsolete — delivering sustained, precise separation in a single pass.
VSEP_Main_Image

Technology Description:

The VSEP filtration system consists of 6 major components: the VSEP (Frame, Drive System, Plumbing), Filter Pack, Interconnecting Piping, Feed Pump Skid, and Metering Pump Skid (with Cleaning Chemical Totes).

 

At startup, the VSEP system is fed with a slurry and the concentrate valve is closed. Permeate is produced and suspended solids in the feed are collected inside the VSEP filter pack. After a programmed time interval, valve one is opened to release the accumulated concentrated solids. The valve is then closed to allow the concentration of additional feed material. This cycle repeats indefinitely.

 

Membrane selection is the single most important parameter that affects the quality of the separation. Other important parameters that affect system performance are pressure, temperature, vibration amplitude, and residence time. All of these elements are optimized during testing and entered into the programmable logic controller (PLC) which controls the system. 

 

The operating pressure is created by the feed pump. VSEP machines can routinely operate at pressures as high as 1,000 psig (68.95 BAR). While higher pressures often produce increased permeate flow rates, they also use more energy. Therefore, an operating pressure is used that optimizes the balance between flow rates and energy consumption. In most cases, the filtration rate can be further improved by increasing the operating temperature. The temperature limit on a standard VSEP system is 175° F (79°C), significantly higher than competitive membrane technology. Even higher temperature constructions are also available. 

 

The vibration amplitude and corresponding shear rate can also be varied which directly affects filtration rates. Shearing is produced by the torsion oscillation of the filter stack. Typically the stack oscillates with an amplitude of 3/4 to 1 1/4 inches (1.9 to 3.2 cm) peak to peak displacement at the rim of the stack. The oscillation frequency is approximately 53 Hz and produces a shear intensity of about 150,000 inverse seconds. 

 

Feed residence time is set by the frequency of the opening and closing of the exit valve (valve one). The solids level in the feed increases as the feed material remains in the machine. Occasionally, a cleaner is added to the membrane stack and continued oscillation helps clean the membrane in minutes. This process can be automated and only consumes approximately 50 gallons (189 liters) of cleaning solution thus reducing cleaner disposal problems inherent with other membrane systems.

 

New Logic Research VSEP

1295 67th St

Emeryville, CA 94608

USA

510-655-730

 

Technology Type

  • UF Membrane

Vendor

  • Equipment Vendor

Product

  • Concentrated Nutrients

Problem

  • Nitrogen
  • Phosphorous
  • Storage
  • Pathogens
  • GHG

 

To view additional information about this vendor, click below.


Technology Strengths,Weaknesses and Critical Indicators

Ultra-Filtration (UF) Membrane Based Nutrient Removal technologies can be used to reduce both suspended and dissolved solids depending on location specific requirements:

  • Produces low nutrient irrigation water and marketable products when paired with other technologies
  • Always produce a stream leaving membrane and stream rejected by membrane
  • Membranes of various size: Micro-filtration, Ultra-Filtration and Nano-Filtration each allowing various sized particles through the membrane
  • Depending on the membrane, effective pre-treatment to remove coarse, fibrous solids as well as fine suspended solids are important to system viability and reliability
  • Membrane failure and high pressure/energy costs can be a concern
  • Proven technology for nitrogen recovery, phosphorous recovery, and pathogen reduction.

Newtrient Comments/Opinions:

Membrane Based Nutrient Removal technologies:

  • Produces recycled water and marketable products when paired with other technologies
  • Always produce a stream leaving membrane and stream rejected by membrane
  • Membranes of various size: Microfiltration, Ultrafiltration and Reverse Osmosis—each allowing various sized particles through the membrane
  • Reverse Osmosis required to remove salts and achieve water suitable for discharge
  • Effective pre-treatment to remove coarse, fibrous solids as well as fine suspended solids are important to system viability and reliability
  • Membrane failure and high pressure/energy costs can be a concern 

 

Newtrient will continue to work with New Logic Research to further refine the cost and performance information as more information becomes available and as new commercial dairy installations come on line.

Comments added 10/09/2017

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