Strip desorption systems

Strip desorption systems

The stripping or desorption process is an established and reliable process for which Likusta offers systems for drinking-water treatment or groundwater treatment. According to the principle of desorption, pollutants are separated from contaminated water and transferred into the gas phase. Depending on the application, gas treatment then follows with an activated carbon filter.

Strip desorption system for separation of pollutants Likusta
Strip desorption system for separation of pollutants
Strip desorption system
Strip desorption system

Deacidification of drinking water

A typical application for desorption systems is the deacidification of drinking water by reducing the concentration of carbon dioxide dissolved in the water. This serves to prevent the transfer of undesirable substances from drinking-water pipes into the drinking water, to improve the subsequent preparation processes, or to protect the system components against increased corrosion.

Removal of dissolved hydrocarbons

On the other hand, desorption systems are used for the removal of dissolved hydrocarbons used in the manufacture or industrial use of e.g. solvents, hydraulic oils, adhesives or varnishes, refrigerants and pesticide products. These substances are oftentimes highly toxic, carcinogenic, and can alter the genetic make-up of humans and animals when they are consumed, for example through drinking water.

This includes:

  • Lightly volatile aromatic hydrocarbons (BTEX), e.g. benzene, toluene, ethylbenzene, xylenes
  • Lightly volatile chlorinated hydrocarbons (LCC), e.g. trichloroethene, tetrachloroethene, cis-1,2-dichloroethene, 1,1,1-trichloroethane
  • Aliphatic ether, e.g. methyl tert-butyl ether (MTBE)
Strip desorption systems for removal of dissolved hydrocarbons Likusta
Strip desorption systems for removal of dissolved hydrocarbons
Strip desorption system made from PEHD Likusta
Strip desorption system made from PEHD

How the system works

In the desorption system the contaminated water is trickled onto the filling bodies through a central nozzle or a perforated distributor plate in the upper part of the column. The filling body assembly serves to enlarge the material exchange surface here. In the counter-flow process gas is blown in, which leads to the outgassing of the dissolved pollutants. The contaminated air is treated in a downstream activated carbon filter (adsorption of the pollutants in activated carbon). The treated water is collected and diverted for further use in the column foot.

Likusta has more than 40 years of experience in the design and manufacture of systems, tanks and the related switching and control technology. Ask us for our references!
We would be pleased to help you find individual solutions for your strip desorption system.


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