| 摘要 |
FIELD: water treatment. ^ SUBSTANCE: invention proposes combined process of biological and physicochemical cleaning of water, which can be used to condition water in reservoirs for holding and growing fish as well as sea animals such as dolphins. Water conditioning process comprises biological treatment of water using biocenose of attached microorganisms, reagent treatment of water with coagulant and flocculant, filtration of water through particulate filters, saturation with oxygen, and disinfection. Biological treatment process is accomplished in column-type bioreactor filled with fibrous polymer packing while water under treatment is passed top-down at a velocity of 25 mm/s. Coagulant is added in dose twice as large as stoichiometric ratio to content of phosphorus in dolphinarium water. Flocculant (polyacrylamide) is added in dose equal to at least one tenth of the weight of suspended particles in water downstream of bioreactor. Filtration of water is carried out in pressure or open-type filters at a filtration speed 8 m/h after ripening of flocks of suspended impurities in flocculation chamber for at least 10 min. Disinfection of clarified water is accomplished by exposing it UV irradiation. ^ EFFECT: reduced power consumption to maintain quality of water in dolphinarium, improved ecology of dolphinarium reservoir, and simplified water conditioning system operation. ^ 2 cl, 6 dwg |
