PILOT UNIT FOR TREATMENT OF WASTE WATER FROM HEAVY METAL IONS, SULPHATE- AND NITRITE IONS Russian patent published in 2019 - IPC C02F9/04 C02F9/08 

FIELD: water purification technology.

SUBSTANCE: invention can be used in water purification. Proposed plant comprises reagent reservoirs unit, reagent treatment unit, flocculation and sedimentation unit, sediment separation and dehydration unit, ozonation units and ultraviolet disinfection units, system of pipelines with shutoff and control valves, pH-meters, circulation and dosing pumps, flow meters and automated system for monitoring parameters of process arranged in process direction. Reagent reservoirs unit includes tanks for lime milk 4, water suspension of aluminous cement 7 and water solution of flocculant 14. Reagent treatment unit includes flow turbulent mixers 6 and 9 interconnected and each separately with tanks for lime milk 4 and water suspension of aluminous cement 7, contact reactor 11 and flow turbulent mixer 16, connected to flocculant solution 14 by pipeline. Flocculation and sedimentation unit includes two clarifier-flocculators 17 and 29 with tanks for collection of clarified water 18 and 30, carbonization unit arranged after clarified water collection tank 18 of first clarifier-flocculator 17, as well as flow turbulent mixer 27, which inlet by means of pipeline is connected to vessel for solution of flocculant 14 and outlet of carbonization unit, and output is connected to second clarifier-flocculator 29.

EFFECT: disclosed invention enables to purify waste water from ions of heavy metals, sulphate- and nitrite ions with achievement of degree of purification corresponding to category 1 according to GOST 17.1.02.04-77 Indicators of condition and rules for taxation of fishery water bodies.

7 cl, 3 dwg