SYSTEM OF ELECTRIC MEMBRANE OBTAINING OF SOFTENED SALT SOLUTION AND CONCENTRATED ALKALINE SOLUTION FROM INDUSTRIAL DISCHARGES

摘要

The invention relates to the field of industrial waste recovery, in particular to the regeneration of caustic vysokomineralizovannyh industrial sewage (wastewater), and can be used in plants having schelochesoderzhaschie drains. The object of the utility model is to obtain improved performance softened saline and the concentrated alkaline solution, reducing power consumption by ensuring a continuous series connection of the first and second stage electromembrane processing, and simplification of the technological scheme. The technical result is achieved in that in electromembrane obtaining softened saline and concentrated liquor from industrial wastewater, comprising arranged in a process sequence storage unit and pre-cleaning of processed wastewater flow recirculation working solutions, the block of multi electro-apparatuses, wherein the block of multi electromembranous apparatus consists of a block electromembrane first processing step for separating alkali strength solution of the starting solution and obtaining softened saline, and the block second stage electromembrane treatment to obtain a concentrated alkaline solution, block recycling the working solution comprises three tanks, bandaged pipes of chemically resistant material, wherein the first tank is mounted with the possibility of filling the wash solution, a second tank is mounted for filling with demineralised water, the third tank is mounted with the possibility of filling the drain and purified schelochesoderzhaschim oedinen with block accumulation and pre-cleaning of processed wastewater, wherein inputs of first electromembrane processing stage block are connected respectively to the outputs of the first, second and third tanks recirculation unit working solutions, the output of the first electromembrane processing stage unit is connected to the input of the first tank recirculation unit working solutions, and electromembrane input processing unit of the second stage is connected to the output of the first recycling unit working tank solutions unit output element of the second stage tromembrannoy processing connected to the inlet of the first tank recirculation unit working solutions, according to the proposed utility model, and is further introduced electromembrane processing line feeding diluate second stage in the second tank recirculation process solutions and the supply line in series liquor obtained in the first electromembrane processing stage, the second electromembrane processing stage. 1 yl.