PHOTOCHEMICAL TREATMENT UNIT FOR WATER PURIFICATION AND DISINFECTION PLANTS Russian patent published in 2018 - IPC C02F1/32 

FIELD: chemistry; optics.

SUBSTANCE: invention relates to purification and disinfection of water using ultraviolet radiation. Photochemical treatment unit for water purification and disinfection plants contains a cascade of continuous irradiation in the form of photochemical reactor 2 on the basis of one or more ultraviolet lamps on mercury vapor and a control unit connected to the lamps via commutator 5. In the treated water stream, there is at least one pulse irradiation cascade, connected to control unit 24, and contaminant analyzer 23. Pulsed irradiation cascade comprises photochemical reactor 2 based on ultraviolet radiation sources in the form of pulsed xenon lamps 8, power supply unit 9 with charging device 11, storage capacitor 10, ignition unit 12 and synchronization circuit 13. Contaminant analyzer 23 is configured to monitor the concentration of contaminants and transmit the output signals to control unit 24. Control unit 24 is configured to generate control pulses to the pulsed irradiation cascades with the possibility of increasing or decreasing their frequency, and also with the possibility of changing the frequency of the control pulses to pulsed irradiation cascades with a delay relative to the previous change in the frequency of the control pulses by an amount t_set, which is chosen from inequality , where V_i∑ – total volume of photochemical reactors and connecting pipelines from the i-th pulsed irradiation cascade to the contaminat analyzer, m³; Q – volumetric flow of treated water, m³/s.

EFFECT: invention allows to increase the productivity, degree of water disinfection and purification, and also to increase the device functionality.

1 cl, 2 dwg