Why RVF can be interesting for you?

Because the membrane fouling generates a lot of problems.  

Fouling, clogging and concentration polarization induce flow rate reduction down to unproductive threshold. Filtration must be stopped to proceed the cleaning procedure of the membranes.

RVF offers an excellent alternative to classical technologies: press or candle filters with temporary filtration media such as kieselguhr, classical tubular membrane filters, combination of several filtration technologies (multi-stage treatment), etc.

Advantages lay in the possibility to filter with membranes the liquids that are usually separated or concentrated with others expensive technologies. RVF reveals quasi-stable and high flow rate, low consumption of cleaning agents, etc.

The result of the fouling for client is:
• Production loss
• Chemicals and energy consumption
• Membranes’ accelerated aging
• Waste wash water generation
• Alteration of the membrane cut-off characteristics

RVF technology gives a major advantage: RVF-filter show very slow fouling.
Continuous dynamic unstationary effect o the fluid onto the membrane makes RVF to be different and innovative technology.

Membrane performances remain stable permanently:
 With a very rough pretreatment of the fluid to treat
 Without frequent periodic membrane cleaning

Mean flow rate is stable and higher for a similar liquid with the same membrane compared to classical cross-flow filtration technologies. Filtration operating conditions and performances of the membrane are stable both for flow rate and rejection

RVF technology is a winner of the 3rd prize of the European Environmental Press 2003 (www.eep.org)


Advantages of the RVF technology:

  • Membrane is cleaned permanently by the liquid being in movement
  • Fouling and concentration polarization are reduced
  • Permeate flux remains at a high level and nearly constant 
  • Long periods of filtration between cleanings 
  • Reduced frequency of the cleaning in place (CIP) 
  • Moderate energy consumption
  • Moderate cost of the equipment
  • Universal technology: MF, UF, NF & RO
  • Possibility to treat viscous and heavily charged liquids
  • Maximum pressure of functioning is 55 bar
  • Medium velocity of retentate is 10 m/s
  • For NF or RO very light pretreatment only is necessary
  • Can be used in the food, pharma and environment applications