FIELD: treatment of waste water. SUBSTANCE: device includes gas supply distributor and integral structure consisting of central housing and load-bearing housings on which perforated tubular diaphragms are located for escape of gases into liquid. Gas supply distributor is brought in communication with passage provided in central housing through hole in central housing; longitudinal passages having form of grooves run off above-mentioned passage; these passages are located under diaphragm. EFFECT: smooth delivery if gas along length of diaphragm; simplified mounting of device. 11 cl, 7 dwg
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