Elastic full chamber fixed bed countercurrent regenerative ion exchanger

Abstract

The invention relates to an elastic full-type fixed bed up-flow regeneration ion exchanger. A running water inlet pipe and a running water outlet pipe are arranged at the two ends of an exchanger tank respectively, an ion exchange resin layer is arranged in the middle of the exchanger tank, a volume compensation layer is arranged in the portion, close to end where the running water inlet pipe is located, of the exchanger tank, a water distribution chamber is arranged at the portion, close to the end where the running water outlet pipe is located, of the exchanger tank, and a water distribution separating hole plate is arranged between the water distribution chamber and the ion exchange resin layer; the volume compensation layer comprises a plurality of volume compensation devices which are densely distributed in the exchanger tank, and gaps between the volume compensation devices are provided with filling materials; in the running or regenerating process of the ion exchanger, with the help of the effects of the volume compensation devices, internal space of the exchanger tank of the ion exchanger keeps in the full state, the stable ion concentration gradient inside and outside a resin ball is kept, and ions inside and outside the resin ball are exchanged sufficiently and smoothly. The best regenerating and running speed can be guaranteed, the best resin regenerating and running effect can be accordingly guaranteed, the water making amount is largest, and the effluent quality is best.

Description

technical field [0001] The invention relates to a water treatment device, in particular to an elastic full-chamber fixed-bed countercurrent regeneration ion exchanger. Background technique [0002] In the field of water treatment ion exchange desalination process, people have been pursuing an ideal anion / cation exchanger, that is, countercurrent regeneration, the most ideal regeneration operation flow rate, and the resin bed is always in a fixed anion during operation and regeneration. / cation exchanger. The anion / cation exchanger is originally a fixed bed with downstream regeneration. The regeneration of this kind of ion exchanger is quite difficult, the regeneration time is also quite long, and the quality of the effluent water is also quite poor. Later, it was found that the effect of countercurrent regeneration was much better than that of downstream regeneration. Therefore, people successively developed bed-type ion exchangers such as countercurrent regeneration fixed...

AI Technical Summary

Problems solved by technology

Because of the countercurrent regeneration process, these bed types have some problems that cannot be solved fundamentally.

Images