FIELD: process engineering.
SUBSTANCE: invention relates to biochemical oxidation of effluents at municipal aeration stations. Proposed plant comprises cylindrical tank accommodating cylindrical chamber of biochemical treatment. Cassettes with fibrous polymer elements for attached biomass are arranged over the chamber height. Afterpurification chamber equipped with immersed spillway is arranged inside cylindrical chamber of biochemical treatment to adjoin its wall. Proposed plant is provided also with effluents feed, distribution and discharge systems and aeration system. Water discharge is performed at constant flow rate at the plant bottom irrespective of water feed to plant maintained at constant level by means of air-operated gate connected with flow rate meter.
EFFECT: lower power consumption, averaged concentration of contaminants, stable operation at irregular flow rates of effluents, higher concentration of active sludge.
5 cl, 4 dwg
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