ELECTRODIALYSIS APPARATUS WITH LAMINAR FLUID MEMBRANE Russian patent published in 2014 - IPC B01D61/46 B01D61/38 C02F1/469 

FIELD: process engineering.

SUBSTANCE: invention relates to water desalination and can be used for demineralisation of natural waters and effluents by electrodialysis in nuclear power engineering, electronic medical, pharmaceutical industries, etc. electrodialysis apparatus comprises housing accommodating anion and cation membranes arranged between electrodes to separate the housing into three chambers: anode chamber, cathode chamber and initial water chamber, initial water channel and dialysate and concentrate discharge channels. Membranes are made of plies of the fluid of different density and thickness. Note here that cation membrane density is higher than that of initial water while anion membrane density is lower than that of initial water. Anion membrane is made of plies of ethanol and toluene. Cation membrane is made of plies of nitrobenzene and glycerine with nominal thickness of each fluid membrane pile making 40-45 mm.

EFFECT: higher degree of desalination, lower labour input, higher reliability of operation.

2 cl, 1 dwg, 1 tbl