MASS TRANSFER IN INJECTION AERATION SYSTEMS WITH DOWNPIPES
DOI:
https://doi.org/10.55287/22275398_2026_60_5Keywords:
aerobic biological wastewater treatment, aeration systems, injection aerators with downpipes, mass transfer characteristicsAbstract
An injection-jet system for aeration of liquids has been developed and studied, which differs from traditional surface jet systems by the presence of downpipes that allow the gas phase (air, ozone-air mixture) to be supplied to a depth of 4-5 meters. The injection-jet ventilation system with downpipes is not inferior in performance to the best traditional systems and surpasses them in terms of ease of use. The system is recommended for use in wastewater treatment processes both in aerotanks with activated sludge and in bioreactors with immobilized microflora. It can also be used in installations for ozonation of water and flotation devices for wastewater treatment from petroleum products. As a result of conducting and processing the results of laboratory experiments, equations were obtained that allow calculating the surface and volume coefficients of oxygen mass transfer from air to liquid in the active and bubbling zones of aerated facilities. The obtained dependences can later be used to calculate the oxidizing capacity of injection-jet wastewater aeration systems in wastewater treatment plants
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