TUBULAR ELECTRICALLY-BAROMEMBRANE UNIT Russian patent published in 2019 - IPC B01D61/46 B01D63/06 

FIELD: membrane technology.

SUBSTANCE: invention can be used in membrane technology: electro-ultrafiltration, electron-nanofiltration, electromicrofiltration and electro-osmosis filtration. Separated solution under pressure exceeding the osmotic pressure of the substances dissolved in it is supplied through the initial solution inlet nozzle 5 into separation chamber 28, which is formed between near-anode and near-cathode membranes 18, 24, pressure grates 8 and 9, cylindrical shell 15 and central tube 22. After filling with the solution of the whole separation chamber 28, on terminals of the device for supply of electric current 10 – "plus" and "minus" respectively, through metal rods 23 and 29, connected to metal pin 30 and metal mesh 4, and on the other side – with end blind surfaces of monopolar electrodes-anodes 17 and cathodes 25, external constant electric field is supplied. Under action of electric current anions and cations penetrate through near-anode and near-cathode membranes 18 and 24, through tubes 16 and monopolar electrodes-anodes 17 and cathodes 25 into space between unipolar electrodes and metal rods 23 and 29, and are withdrawn from the apparatus by an output fitting of pre-anode permeate 11 and the outlet nozzle of cathode permeate 7. Part of the solution with anions and cations not penetrated through the near-anode and near-cathode membranes 18 and 24, respectively, is removed from separation chamber 28 through retentate discharge nozzle 6.

EFFECT: disclosed electro-baro-membrane apparatus provides reduced hydraulic resistance and concentration polarization, high quality and efficiency of separation of solutions, as well as high separation of colloidal solutions.

1 cl, 7 dwg