| 摘要 |
FIELD: waste water treatment. ^ SUBSTANCE: aerator for biological treatment of waste waters contains dispersing element, in particular porous shell made from polymeric material and formed by randomly laid fibers melted together in their intersection points. Density of porous shell ranges from 3.5.102 to 6.1.102 kg/m3 and its thickness from 3 to 9 mm. Shell density and thickness values vary from low limits to high ones according to the shell cross-section profile. ^ EFFECT: enabled various degrees of air dispersion over the aerator surface. ^ 1 dwg |
