Consejo Superior de Investigaciones Científicas

Tri-functional tanks for desalination processes

Posted by Consejo Superior de Investigaciones CientíficasResponsive · Patents for licensing · Spain

Summary of the technology

CSIC has developed a water filtration installation. It contains tanks designed to perform various
functions: water filtration by means of ultrafiltration, water filtration by reverse osmosis and recycling
of reverse osmosis membranes. This installation is used, for example, in seawater desalination

Industrial partners from the hydraulic companies are being sought to collaborate through a patent
licence agreement.

An offer for Patent Licensing

Recycling reverse osmosis membranes in the tank itself.

Figure 1: Ultrafiltration and reverse osmosis processes There are two types of semipermeable reverse osmosis and ultrafiltration membranes. Once the reverse osmosis membranes are deteriored, they are transformed into ultrafiltration membranes in the tank itself.
The installation consists of different elements: tanks and as a regulation system, valves and pumps. The different circuits are connected in the same installation. These are:
- Ultrafiltration circuit (Figure 1): transforms the raw wáter which contains particles in ultrafiltered wáter leaving them retained in the membrane.
- Backwash circuit: it is necessary to wash the membranes filled with particles dislodging retained particles.
- Reverse osmosis circuit (Figure 1): transforms ultrafiltered wáter into osmotized wáter eliminating the brine that is obtained.
- Recycling circuit: reconvert degraded reverse osmosis membranes into new ultrafiltration membranes.

Main innovations and advantages

· Installation is flexible in the number of tanks from which it is formed.
· The possibility to perform different functions, without the need to changetank.
· Recycling of reverse osmosis membranes already deteriorated into newultrafiltration membranes optimizing costs.
· This installation can be used for water filtration, for example, to carry out thedesalination of seawater.

Intellectual property status

Granted Patent
Spanish patent application filed

Technology Owner

Consejo Superior de Investigaciones Científicas

Public Agency

Related keywords

  • Hydropower
  • Protecting Man and Environment
  • Environment
  • Water Management
  • Desalination
  • Drinking Water
  • Hydrology
  • Industrial Water Treatment
  • Marine Environment
  • Municipal Water Treatment
  • Water Resources Management
  • Hydro-electric
  • Industrial Products
  • Industrial Equipment and Machinery
  • Machine tools, other metal working equipment (excluding numeric control)
  • Other industrial equipment and machinery
  • Water treatment equipment and waste disposal systems
  • osmosis
  • water desalination
  • tri-functional tanks
  • desalination processes

About Consejo Superior de Investigaciones Científicas

Public Agency from Spain

The Spanish National Research Council (in Spanish 'Consejo Superior de Investigaciones Científicas (CSIC)') is a government agency for basic and applied scientific research.

It is the largest public research organization in Spain, with presence in all the Autonomous Communities through 126 centers and 145 associated units.

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