METHOD OF CLARIFICATION AND DECOLORIZATION OF NATURAL WATERS AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2017 - IPC C02F1/463 B01D21/30 C25B9/00 

FIELD: chemistry.

SUBSTANCE: clarification and decolorization of natural waters is carried out with the help of water intake and cleaning device. Physical treatment is carried out in working closed electrocoagulation chambers 7 by exposing the treated water to a constant electric field at potential gradients ranging from 4 V/cm to 8 V/cm, the distance between the annular non-polarizable electrodes 8 located at the bottom of each chamber from 1 cm before 2 centimeters. At the bottom of a plate, and on top of the cathode. At the signal the control unit 1 includes a constant current source 3 which supplies the ring 8 nonpolarizable electrodes a potential difference with the initial potential gradient 8 V/cm. Then, the supply of the potential difference. Water is supplied to filtration chamber 10. Include a submersible motor 13 and the electric valve 5 is opened to the pump string 14 by monitoring sensor 4 the purified water flow. At the signal the control unit 1 produces water sampling using the sampling device 22 and determining the zeta potential of the slurry, turbidity and colour of water purified water quality control unit 2 connected to the control unit 1. If any of these parameters does not meet the requirements of production schedules, perform a gradual reduction potential gradient at 0.5 V/cm to 4 V/cm while decreasing the flow by reducing the opening of the valve and connect the unused working electrocoagulation chambers. While improving the turbidity of purified water and chrominance indices valve is gradually opened until the starting position. If the required result for turbidity and colour can not be provided, the residence time of the treated water in the electrocoagulation chambers is increased consecutively by connecting the reserve chambers.

EFFECT: invention allows to increase the reliability of water treatment processes, to provide a system of flexible management, safety of drinking water, the compactness of the equipment and reduction in construction and operating costs.

2 cl, 2 dwg, 5 tbl