LIQUID AERATION APPARATUS Russian patent published in 1995 - IPC

FIELD: purification of sewage water, precipitation treatment, apparatus for mixing and saturating liquids with gases. SUBSTANCE: apparatus has airduct connected with housing and disperser made from polyvinylformal with porosity of 88-92% and water absorption of at least 700% Usage of hydrophilic material, which is resilient in wet state, for making disperser allows efficiency to be considerably increased without substantial head loss due to swelling of material in wet medium and opening of additional pores, which are closed in dry air state. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 2 dwg, 2 tbl