HYDRODYNAMIC TREATMENT PLANT FOR CONTAMINATED WATER Russian patent published in 2019 - IPC C02F9/08 C02F1/34 C02F1/74 B01F3/04 

FIELD: ecology.

SUBSTANCE: invention relates to ecology and can be used in housing and communal services, industry, agriculture, emergency services and military units for fast disinfection and fast cleaning of contaminated water. Hydrodynamic treatment plant of contaminated water comprises series-mounted working pump 5, confuser 8, disintegrator 9, as well as system for input of compressed atmospheric air or compressed gaseous oxygen from external source 17 into flow of water treated in disintegrator 9, supply and discharge pipelines, measuring and adjusting elements. Working pump 5 has pressure at outlet P = (10–35) kg/cm². Confuser 8 has diameter of inlet section equal to diameter of outlet section of working pump 5, and outlet cross-section diameter equal to inlet cross-section diameter of disintegrator 9. Disintegrator 9 is made of ramjet horizontal pipe with length L = (4–12) m. Source 17 of compressed atmospheric air or compressed gaseous oxygen is connected to disintegrator 9 via crane 18, constant pressure reducer 35, washer-batcher 36, intended for treatment of water, contaminated by chemical and biological oxygen demand (COD + BOD) to average pollution factor of PF_av ≤ 5 g/l, and configured to adjust and automatic maintenance of required pressure and flow rate of compressed atmospheric air or compressed gaseous oxygen in its injection section into disintegrator 9, and also with possibility of creation in it of monodisperse gas-liquid flow with parameters: content of oxygen (C_o) not less than PF_av treated water; average volume gas content δ_av= 0.15–0.25; average speed W_cp= (20–25) m/s; duration of liquid and vapor-gas phase contact τ= (0.2–0.5) s; average radius of steam-gas bubbles R_cp= (30–70) mcm; Reynolds criterion R_e= 1.5×10⁵–7.5×10⁶; Weber criterion W_e= 2.2×10⁴–2.0×10⁶.

EFFECT: invention makes it possible to use a hydrodynamic installation for disinfection and cleaning of water contaminated to different degree, to ensure safe water treatment to the average contamination factor of PF_av ≤ 5 g/l, to reduce average radius of working gas microbubbles in flow, to ensure lower gas content of water, to reduce speed of gas-liquid flow with provision of sufficient time of contact of particles of contaminants dissolved in water of 0,2–0,5 s in disintegrator of increased length.

19 cl, 2 dwg