INSTALLATION FOR ELECTROCHEMICAL TREATMENT OF WATER AND AQUEOUS SOLUTIONS Russian patent published in 1999 - IPC

FIELD: water purification and disinfection processes to obtain drinkable water, preparation of disinfecting and washing solutions. SUBSTANCE: installation for electrochemical treatment of water and aqueous solutions has four electrochemical cells made of vertical coaxial cylindrical and rod electrodes placed into dielectric bushings, ultrafiltration ceramic diaphragm based on zirconium oxide with additions of yttrium and aluminum oxides that divides interelectrode space into electrode chambers. Inlets for treated water is located in lower parts of chambers and outlets are situated in their upper parts. Cylindrical electrodes are made from titanium and have platinum coat, rod electrodes are made from titanium and have electrocatalytic coat of platinum, iridium and ruthenium dioxide. Installation also includes power supply which positive pole is connected to rod and negative pole to cylindrical electrodes of cells, lines to feed water for treatment and to discharge treated water, fixture to meter solution of sodium chloride into treated water placed in line to feed water that is manufactured in the form of water-jet pump connected to salt solution vessel downstream from flow governor and used prior to supply of solution into electrode chambers of cells. Cells are hydraulically connected in parallel and pairs of cells are electrically placed in parallel, two pairs of cells are connected in series. Line to feed water for treatment is connected to chambers of cylindrical electrodes of cells, line to discharge water from chambers of cylindrical electrodes is connected to inlets of chambers of rod electrodes, line to discharge treated water is linked to outlets of chambers of rod electrodes. Installation additionally has fixture to dispose of part of degassed solution mounted in line to discharge water from chambers of cylindrical electrodes and vessel to collect treated water. Installation incorporates control unit connected to power supply and productivity transducer integrated with flow governor, transducer monitoring level of salt solution placed in vessel for salt solution and transducer monitoring level of treated water placed in vessel to collect treated water. All transducers are connected to control unit. Technical effect of invention lies in reduction of energy consumption with provision of productivity of 40-100 l/h. EFFECT: expanded functional capabilities of installation owing to expanded spectrum of characteristics of obtained solutions, simplified design of installation. 2 cl, 3 dwg