LIFTBED: A GOOD IDEA: TWO CHAMBERS
The Lewatit® liftbed process is based on the fluidized bed principle. Each unit consists of at least two chambers separated from one an-other by an additional nozzle plate. The chambers are connected to each other by lift pipes (for transferring the resin).
The lower chamber is only partly filled with resin (approx. 1/3 of the total) and has enough freeboard for internal backwashing.
This saves space, and means that no external rinse tank is needed.
Other advantages include: the high operating capacity, the fact that it is also suitable for water with a very high salt content, and that it can be used in cases of inadequate raw water pretreatment. On top of this, of course, it has all the other benefits of the fluidized bed system.
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