Installation and method for the treatment of liquid, in particular for the demineralization of water through a bed of granular material active compact in the high position and regenerated periodically a current against -

摘要

An installation and apparatus for treating a liquid, in particular for demineralizing water passing through a bed of active granular material which is compacted in a high position and which is periodically regenerated by a reverse flow. The installation comprises a treatment volume (10), an expansion volume (20) for the bed and disposed coaxially above the treatment volume (10); communication and isolation means (20, 32) between said two volumes, and means for periodically causing the liquid to be treated to flow through the bed and for causing regenerator liquids to flow through the bed.