Ion exchange process for multistage reverse flow zeolite molecular sieve of band filter

The invention relates to a method for performing ion exchange on a zeolite molecular sieve by a horizontal band vacuum filter, which is characterized in that the band filter has N (N is an integer morThe invention relates to a method for performing ion exchange on a zeolite molecular sieve by a horizontal band vacuum filter, which is characterized in that the band filter has N (N is an integer more than 3) ion exchange zones and performs N stages of reverse flow ion exchanges in the ion exchange zones. The method integrates ion exchange, filtration and washing and is easy for large scale contie than 3) ion exchange zones and performs N stages of reverse flow ion exchanges in the ion exchange zones. The method integrates ion exchange, filtration and washing and is easy for large scale continuous production, the utilization rate of exchange ions is greatly improved, and the content of the exchange ions in the discharged wastewater is greatly reduced.nuous production, the utilization rate of exchange ions is gre