DEVICE AND METHOD OF PURIFYING WASTE WATER FROM PHENOL Russian patent published in 2020 - IPC C02F1/48 C02F1/72 

FIELD: water treatment.

SUBSTANCE: invention relates to devices for preparation and disinfection of water and can be used for purification of industrial effluents from phenol. Device for purification of waste water from phenol includes a vertically installed reactor of cylindrical shape, equipped with two side electrodes, to which pulsed voltage is supplied from high-voltage generator, system for discharge of gases and treated waste water, characterized by that both electrodes in reactor are installed horizontally, reactor additionally contains Laval nozzle, and device itself is system for continuous supply of waste water and hydrogen peroxide, which are pre-homogenized in static mixer. Method of purifying waste water from phenol, which involves exposing a homogeneous mixture of phenol-containing waste water and hydrogen peroxide to high-voltage pulse discharge and characterized by that before feeding into reactor phenol-containing waste water is pre-homogenized with calculated amounts of hydrogen peroxide in static mixer, wherein hydrogen peroxide feed rate is calculated in accordance with phenol concentrations in waste water in their weight ratio of hydrogen peroxide : phenol equal to (1–5):6, hydrogen peroxide is fed into a homogenizer-mixer, is fed through a control valve, and homogenized solution is passed between electrodes, then through Laval nozzle, which provides complete decomposition of phenol.

EFFECT: providing efficient treatment of waste water from phenol, as well as durability, reliability and safety of operation of the device and simplification of its operation.

2 cl, 1 dwg